Analysis

  • max time kernel
    2s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    21-06-2024 23:11

General

  • Target

    79089643736164d0100b69bdc309b4aa69f87f3c915bb80bed31f122e77c760a.exe

  • Size

    2.0MB

  • MD5

    b1f94dcb56edf7117429cfb1d64b1ded

  • SHA1

    a06a8280e6b605fbb2ca278df1be1be4e979a8e7

  • SHA256

    79089643736164d0100b69bdc309b4aa69f87f3c915bb80bed31f122e77c760a

  • SHA512

    47ffbcc807df8ab2b827bcebc23cacbb3f2e831790d3c37de2bffcedcad0c88513c97973ee96941ccd96c1bc0bd5ae4fef65be7d5e3306c721a692a91991df45

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYt:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yn

Malware Config

Extracted

Family

azorult

C2

http://0x21.in:8000/_az/

Extracted

Family

quasar

Version

1.3.0.0

Botnet

EbayProfiles

C2

5.8.88.191:443

sockartek.icu:443

Mutex

QSR_MUTEX_0kBRNrRz5TDLEQouI0

Attributes
  • encryption_key

    MWhG6wsClMX8aJM2CVXT

  • install_name

    winsock.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    win defender run

  • subdirectory

    SubDir

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 6 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 6 IoCs
  • Detects executables containing common artifacts observed in infostealers 6 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 33 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • AutoIT Executable 3 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\79089643736164d0100b69bdc309b4aa69f87f3c915bb80bed31f122e77c760a.exe
    "C:\Users\Admin\AppData\Local\Temp\79089643736164d0100b69bdc309b4aa69f87f3c915bb80bed31f122e77c760a.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2876
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2576
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2876 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2604
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        PID:1152
      • C:\Users\Admin\AppData\Local\Temp\79089643736164d0100b69bdc309b4aa69f87f3c915bb80bed31f122e77c760a.exe
        "C:\Users\Admin\AppData\Local\Temp\79089643736164d0100b69bdc309b4aa69f87f3c915bb80bed31f122e77c760a.exe"
        2⤵
          PID:2704
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\SysWOW64\schtasks.exe" /create /tn RtkAudioService64 /tr "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe" /sc minute /mo 1 /F
          2⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2748

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Execution

      Scheduled Task/Job

      1
      T1053

      Scheduled Task

      1
      T1053.005

      Persistence

      Scheduled Task/Job

      1
      T1053

      Scheduled Task

      1
      T1053.005

      Privilege Escalation

      Scheduled Task/Job

      1
      T1053

      Scheduled Task

      1
      T1053.005

      Discovery

      Query Registry

      1
      T1012

      Peripheral Device Discovery

      1
      T1120

      System Information Discovery

      2
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • \Users\Admin\AppData\Local\Temp\vnc.exe
        Filesize

        405KB

        MD5

        b8ba87ee4c3fc085a2fed0d839aadce1

        SHA1

        b3a2e3256406330e8b1779199bb2b9865122d766

        SHA256

        4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

        SHA512

        7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

      • \Users\Admin\AppData\Local\Temp\windef.exe
        Filesize

        349KB

        MD5

        b4a202e03d4135484d0e730173abcc72

        SHA1

        01b30014545ea526c15a60931d676f9392ea0c70

        SHA256

        7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

        SHA512

        632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

      • memory/1152-46-0x0000000000280000-0x00000000002DE000-memory.dmp
        Filesize

        376KB

      • memory/1152-46-0x0000000000280000-0x00000000002DE000-memory.dmp
        Filesize

        376KB

      • memory/1152-46-0x0000000000280000-0x00000000002DE000-memory.dmp
        Filesize

        376KB

      • memory/2180-30-0x0000000000210000-0x000000000041A000-memory.dmp
        Filesize

        2.0MB

      • memory/2180-30-0x0000000000210000-0x000000000041A000-memory.dmp
        Filesize

        2.0MB

      • memory/2180-30-0x0000000000210000-0x000000000041A000-memory.dmp
        Filesize

        2.0MB

      • memory/2704-31-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB

      • memory/2704-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
        Filesize

        4KB

      • memory/2704-33-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB

      • memory/2704-43-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB

      • memory/2704-43-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB

      • memory/2704-31-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB

      • memory/2704-33-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB

      • memory/2704-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
        Filesize

        4KB

      • memory/2704-31-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB

      • memory/2704-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
        Filesize

        4KB

      • memory/2704-43-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB

      • memory/2704-33-0x00000000000C0000-0x00000000000E0000-memory.dmp
        Filesize

        128KB