Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-06-2024 20:41

General

  • Target

    twojamatkat-built.exe

  • Size

    3.1MB

  • MD5

    27dad1cf69f9cb558f4d975c8bf34faa

  • SHA1

    ea7beaa366b83b6e8410b10cdf055d08df49c907

  • SHA256

    910222c58e9a584fe4015ef10462470b320b624d7b56056b3ffcf7ea2f479b80

  • SHA512

    5f2251f3b017ee9103416928d23d179de716f84d21c287b441d05130b8102df9b8fe616a46a15e62ad524f27b99beb755949ab0d79c1ef9d77b25eb079076c1a

  • SSDEEP

    49152:Xv+e821/aQWl8P0lSk3aKA3Z+ndBxNESEzk/iNLoGdWLTHHB72eh2NT:Xv9821/aQWl8P0lSk3DA3Z+nbxmF

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

performance-ha.gl.at.ply.gg:33365

performance-ha.gl.at.ply.gg:13678

Mutex

ba5220e2-c4e8-4381-aad8-a85115ef955e

Attributes
  • encryption_key

    67C139F3E9A16FF8132A3DCF42197B8BA3C38609

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Checks computer location settings 2 TTPs 9 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 10 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Runs ping.exe 1 TTPs 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of FindShellTrayWindow 10 IoCs
  • Suspicious use of SendNotifyMessage 10 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\twojamatkat-built.exe
    "C:\Users\Admin\AppData\Local\Temp\twojamatkat-built.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3860
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1928
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\P7TZJuKrYWHQ.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4056
        • C:\Windows\system32\chcp.com
          chcp 65001
          4⤵
            PID:2436
          • C:\Windows\system32\PING.EXE
            ping -n 10 localhost
            4⤵
            • Runs ping.exe
            PID:1896
          • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
            "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
            4⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:3264
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\65OswQAKZC4A.bat" "
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4428
              • C:\Windows\system32\chcp.com
                chcp 65001
                6⤵
                  PID:2696
                • C:\Windows\system32\PING.EXE
                  ping -n 10 localhost
                  6⤵
                  • Runs ping.exe
                  PID:2704
                • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                  6⤵
                  • Checks computer location settings
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of FindShellTrayWindow
                  • Suspicious use of SendNotifyMessage
                  • Suspicious use of WriteProcessMemory
                  PID:2104
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\iQii8SRd8rmc.bat" "
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:452
                    • C:\Windows\system32\chcp.com
                      chcp 65001
                      8⤵
                        PID:916
                      • C:\Windows\system32\PING.EXE
                        ping -n 10 localhost
                        8⤵
                        • Runs ping.exe
                        PID:2328
                      • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                        "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                        8⤵
                        • Checks computer location settings
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        • Suspicious use of FindShellTrayWindow
                        • Suspicious use of SendNotifyMessage
                        • Suspicious use of WriteProcessMemory
                        PID:2460
                        • C:\Windows\system32\cmd.exe
                          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\pyYgZ6bb1h7u.bat" "
                          9⤵
                          • Suspicious use of WriteProcessMemory
                          PID:1044
                          • C:\Windows\system32\chcp.com
                            chcp 65001
                            10⤵
                              PID:3732
                            • C:\Windows\system32\PING.EXE
                              ping -n 10 localhost
                              10⤵
                              • Runs ping.exe
                              PID:4876
                            • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                              "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                              10⤵
                              • Checks computer location settings
                              • Executes dropped EXE
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of FindShellTrayWindow
                              • Suspicious use of SendNotifyMessage
                              • Suspicious use of WriteProcessMemory
                              PID:3864
                              • C:\Windows\system32\cmd.exe
                                C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IPHtFtAEok1A.bat" "
                                11⤵
                                • Suspicious use of WriteProcessMemory
                                PID:2308
                                • C:\Windows\system32\chcp.com
                                  chcp 65001
                                  12⤵
                                    PID:2868
                                  • C:\Windows\system32\PING.EXE
                                    ping -n 10 localhost
                                    12⤵
                                    • Runs ping.exe
                                    PID:1940
                                  • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                                    "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                                    12⤵
                                    • Checks computer location settings
                                    • Executes dropped EXE
                                    • Suspicious use of AdjustPrivilegeToken
                                    • Suspicious use of FindShellTrayWindow
                                    • Suspicious use of SendNotifyMessage
                                    • Suspicious use of WriteProcessMemory
                                    PID:2568
                                    • C:\Windows\system32\cmd.exe
                                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\datgLpV5rjdI.bat" "
                                      13⤵
                                      • Suspicious use of WriteProcessMemory
                                      PID:2380
                                      • C:\Windows\system32\chcp.com
                                        chcp 65001
                                        14⤵
                                          PID:4940
                                        • C:\Windows\system32\PING.EXE
                                          ping -n 10 localhost
                                          14⤵
                                          • Runs ping.exe
                                          PID:2040
                                        • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                                          "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                                          14⤵
                                          • Checks computer location settings
                                          • Executes dropped EXE
                                          • Suspicious use of AdjustPrivilegeToken
                                          • Suspicious use of FindShellTrayWindow
                                          • Suspicious use of SendNotifyMessage
                                          • Suspicious use of WriteProcessMemory
                                          PID:4496
                                          • C:\Windows\system32\cmd.exe
                                            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sS0zbHsBByJN.bat" "
                                            15⤵
                                            • Suspicious use of WriteProcessMemory
                                            PID:1116
                                            • C:\Windows\system32\chcp.com
                                              chcp 65001
                                              16⤵
                                                PID:4316
                                              • C:\Windows\system32\PING.EXE
                                                ping -n 10 localhost
                                                16⤵
                                                • Runs ping.exe
                                                PID:3704
                                              • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                                                "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                                                16⤵
                                                • Checks computer location settings
                                                • Executes dropped EXE
                                                • Suspicious use of AdjustPrivilegeToken
                                                • Suspicious use of FindShellTrayWindow
                                                • Suspicious use of SendNotifyMessage
                                                • Suspicious use of WriteProcessMemory
                                                PID:3836
                                                • C:\Windows\system32\cmd.exe
                                                  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NkbYDcTEPlwY.bat" "
                                                  17⤵
                                                  • Suspicious use of WriteProcessMemory
                                                  PID:560
                                                  • C:\Windows\system32\chcp.com
                                                    chcp 65001
                                                    18⤵
                                                      PID:2024
                                                    • C:\Windows\system32\PING.EXE
                                                      ping -n 10 localhost
                                                      18⤵
                                                      • Runs ping.exe
                                                      PID:3356
                                                    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                                                      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                                                      18⤵
                                                      • Checks computer location settings
                                                      • Executes dropped EXE
                                                      • Suspicious use of AdjustPrivilegeToken
                                                      • Suspicious use of FindShellTrayWindow
                                                      • Suspicious use of SendNotifyMessage
                                                      PID:4792
                                                      • C:\Windows\system32\cmd.exe
                                                        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\hiwRbPgeLbhY.bat" "
                                                        19⤵
                                                          PID:2436
                                                          • C:\Windows\system32\chcp.com
                                                            chcp 65001
                                                            20⤵
                                                              PID:1932
                                                            • C:\Windows\system32\PING.EXE
                                                              ping -n 10 localhost
                                                              20⤵
                                                              • Runs ping.exe
                                                              PID:4664
                                                            • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                                                              "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                                                              20⤵
                                                              • Executes dropped EXE
                                                              • Suspicious use of AdjustPrivilegeToken
                                                              • Suspicious use of FindShellTrayWindow
                                                              • Suspicious use of SendNotifyMessage
                                                              PID:4652

                      Network

                      MITRE ATT&CK Matrix ATT&CK v13

                      Discovery

                      Query Registry

                      1
                      T1012

                      System Information Discovery

                      2
                      T1082

                      Remote System Discovery

                      1
                      T1018

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Client.exe.log
                        Filesize

                        2KB

                        MD5

                        8f0271a63446aef01cf2bfc7b7c7976b

                        SHA1

                        b70dad968e1dda14b55ad361b7fd4ef9ab6c06d7

                        SHA256

                        da740d78ae00b72cb3710d1a1256dc6431550965d20afaa65e5d5860a4748e8c

                        SHA512

                        78a403c69f1284b7dd41527019f3eede3512a5e4d439d846eca83557b741ca37bcf56c412f3e577b9dd4cfa5a6d6210961215f14cb271b143f6eb94f69389cf5

                      • C:\Users\Admin\AppData\Local\Temp\65OswQAKZC4A.bat
                        Filesize

                        207B

                        MD5

                        884aeaea3c507b73a7e35a1ead65f83e

                        SHA1

                        e1227e0a137cee05f1ed8b3e6926ab7bfc775c88

                        SHA256

                        167206624fb4c7c74ea39ed9d8ba4835eebe6bbe200535f7f57a130dcdea7fdd

                        SHA512

                        5868be9cf0557585196c6d1a625bfcf36fabbee07d494489b57cf25c193df4bf3d68bb22cff460c3de738a8bd40b17ffdeec584bb81a7e929530b57177ed4d8a

                      • C:\Users\Admin\AppData\Local\Temp\IPHtFtAEok1A.bat
                        Filesize

                        207B

                        MD5

                        2659b2da1ac7c84f5bff8bec3a84a503

                        SHA1

                        f5c1f731678e734d6a174b38524f4bb3e65be8f1

                        SHA256

                        67be6a4af035a8907fadfd14dcf6280f98112e2b405ffb2f68c6393abc915191

                        SHA512

                        8f3a579f1675e0327af3492c8d34c1219a663e2a8359be90635a4481aa1ec8fc42306d2107fca9d87a6e5d0138f321873565efca48afffeb0d3607b68e5469b1

                      • C:\Users\Admin\AppData\Local\Temp\NkbYDcTEPlwY.bat
                        Filesize

                        207B

                        MD5

                        35d22b387602dca675de670b266f954f

                        SHA1

                        257b8c0ab0cbacaa956013f3011febd72d68b7e7

                        SHA256

                        0300fa11dae8522e4dc9e3257d41e17a5ad47e1c0db84bdb9c3452487e61fa3e

                        SHA512

                        31f60b7eadf2d6e4bb7f5a36075084f7ab43d6d0c1d0014814525b67ab50a131c57e6f5bc8e6b67b1b63e1dda83276a47274808f43e782a1571ced3ea3359570

                      • C:\Users\Admin\AppData\Local\Temp\P7TZJuKrYWHQ.bat
                        Filesize

                        207B

                        MD5

                        e81e7d725d2a62958c6135225cc86191

                        SHA1

                        581395b80b23457f80e544bf1c81c10b605b0a6a

                        SHA256

                        68df811613b27761d3ccfb84618f506839f3a6adb766c9c50694c1198b126f69

                        SHA512

                        b557b34f621137ff9332d9d3b41c28762a786db1fc1e5cc703ff5f05f52ac2c568946971bbcfd01a957b47bc7fc42b0a2368d489d635115753b2f3ff6fb72700

                      • C:\Users\Admin\AppData\Local\Temp\datgLpV5rjdI.bat
                        Filesize

                        207B

                        MD5

                        8e030c2d713da6811a84c86eb3fecc90

                        SHA1

                        e8e6ae34cea59928bf621fadc44df3da1deca76d

                        SHA256

                        73baffbac66225bed874c6a8f1e93b10f9cc8140a2ff69cdaf8e60d417693549

                        SHA512

                        e791159f53240b5dd1959ded27e74093a871d18a82cbf5c2ca341adab25033e65a40c7878d99659d9cfb5597aad3267d851e75d071c64738188f373d2172cc55

                      • C:\Users\Admin\AppData\Local\Temp\hiwRbPgeLbhY.bat
                        Filesize

                        207B

                        MD5

                        1b16d6677acb41f90feccdf8caf0df0b

                        SHA1

                        f1468ff21f6e4c55ddea27d9fb0ff85ff2446494

                        SHA256

                        5d3936bfda4c49b19cfb6ad3e5a2dd7e077d57e330a19c774c6228fbbf989212

                        SHA512

                        d9a6a6b79c78b967bf3526091c3da29878927134abddc964a5ca0462022c977f58202c1b32ecca7163c6f5c8552c983515a6230ac80dfa6d86ec61e285ac1828

                      • C:\Users\Admin\AppData\Local\Temp\iQii8SRd8rmc.bat
                        Filesize

                        207B

                        MD5

                        ea095484450aa00a24fb68c5cc0bd809

                        SHA1

                        01d2ed0d001dc41b47a2744831c207be661e408d

                        SHA256

                        1e7784a27697ab989cf430357614a22eb447ce5d2f281e5bf5382c671354f43e

                        SHA512

                        39a5045736be3af28e8320277eb8c2d665b45e9bb7ed6eafe997d3c4306bac9f40793ae6ff7d65cba369b9937f92533b8ed948f0f1831af671006e01b9cb701f

                      • C:\Users\Admin\AppData\Local\Temp\pyYgZ6bb1h7u.bat
                        Filesize

                        207B

                        MD5

                        3052cfad6afff2dd7093902634b88b41

                        SHA1

                        0c41c8cf8390e47d8c8ee005bf0a4a08ee1b0e3e

                        SHA256

                        8f0c4b9c875b270071f160b10e9981e430d71d304975aeaed8606fb61b097adf

                        SHA512

                        1b8bde67996b3771c2eff29837c2492b1e00c1eaad7b99b05cc248a455e60d101006d6dc7b6fe62526593024747ee4048bda63ab70b2c4ab67c7ff8e94ceab7f

                      • C:\Users\Admin\AppData\Local\Temp\sS0zbHsBByJN.bat
                        Filesize

                        207B

                        MD5

                        e10d03ec78fdf3f698b51c74be8c2ba4

                        SHA1

                        67bfba45d4453fa61d706c029b7601f4be041ca4

                        SHA256

                        c463fc9db0d9c90bcd0b3a55073fdaf0a8e89acb470022db57b93186f76bc51c

                        SHA512

                        54d45442eddbb51df3b3fea14c64db8f8728f8bbdd1edf70f856b34cba5057f803fe9a2750e08c2ed15f8aacf9546743729b092e39455f09aa33096dfbe148c8

                      • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                        Filesize

                        3.1MB

                        MD5

                        27dad1cf69f9cb558f4d975c8bf34faa

                        SHA1

                        ea7beaa366b83b6e8410b10cdf055d08df49c907

                        SHA256

                        910222c58e9a584fe4015ef10462470b320b624d7b56056b3ffcf7ea2f479b80

                        SHA512

                        5f2251f3b017ee9103416928d23d179de716f84d21c287b441d05130b8102df9b8fe616a46a15e62ad524f27b99beb755949ab0d79c1ef9d77b25eb079076c1a

                      • memory/1928-12-0x000000001E200000-0x000000001E2B2000-memory.dmp
                        Filesize

                        712KB

                      • memory/1928-8-0x00007FFF98770000-0x00007FFF99231000-memory.dmp
                        Filesize

                        10.8MB

                      • memory/1928-17-0x00007FFF98770000-0x00007FFF99231000-memory.dmp
                        Filesize

                        10.8MB

                      • memory/1928-11-0x000000001E0F0000-0x000000001E140000-memory.dmp
                        Filesize

                        320KB

                      • memory/1928-10-0x00007FFF98770000-0x00007FFF99231000-memory.dmp
                        Filesize

                        10.8MB

                      • memory/3860-0-0x00007FFF98773000-0x00007FFF98775000-memory.dmp
                        Filesize

                        8KB

                      • memory/3860-2-0x00007FFF98770000-0x00007FFF99231000-memory.dmp
                        Filesize

                        10.8MB

                      • memory/3860-9-0x00007FFF98770000-0x00007FFF99231000-memory.dmp
                        Filesize

                        10.8MB

                      • memory/3860-1-0x00000000004D0000-0x00000000007F4000-memory.dmp
                        Filesize

                        3.1MB