Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    12-04-2024 18:01

General

  • Target

    5a75581bb646c22b9b07b242e0f6cc3bac3418eee27d58a00c7bb8590a723089.exe

  • Size

    490KB

  • MD5

    38e2874247fff6b221c5a40f32934730

  • SHA1

    a615ce7f6bfeb39a9fd094c570be43e0d7fdc401

  • SHA256

    5a75581bb646c22b9b07b242e0f6cc3bac3418eee27d58a00c7bb8590a723089

  • SHA512

    8c1be9e1e6badace316617c10d1949ecf29e1067d77984f6a5329813b76ce8f6b7fbd73c7d5a0a83ed12131f62804ccd1771e23a47c0a90d18b5770951bf52a5

  • SSDEEP

    6144:bgnzgxVJGo/KFIc4prUaKWv43AUoWwWHgyxSArUUeZN3EUTtwAMQaMWuIrMQVL99:EMxVJbyivpr2eUoWNHgQr2njkQorbf/l

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • Detect ZGRat V1 3 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 3 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a75581bb646c22b9b07b242e0f6cc3bac3418eee27d58a00c7bb8590a723089.exe
    "C:\Users\Admin\AppData\Local\Temp\5a75581bb646c22b9b07b242e0f6cc3bac3418eee27d58a00c7bb8590a723089.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1124
    • C:\Users\Admin\AppData\Local\Temp\uv8.0.exe
      "C:\Users\Admin\AppData\Local\Temp\uv8.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3708
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\BAKJKFHCAE.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1644
        • C:\Users\Admin\AppData\Local\Temp\BAKJKFHCAE.exe
          "C:\Users\Admin\AppData\Local\Temp\BAKJKFHCAE.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:4636
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\BAKJKFHCAE.exe
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2300
            • C:\Windows\SysWOW64\PING.EXE
              ping 2.2.2.2 -n 1 -w 3000
              6⤵
              • Runs ping.exe
              PID:2092
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 2484
        3⤵
        • Program crash
        PID:4664
    • C:\Users\Admin\AppData\Local\Temp\uv8.1.exe
      "C:\Users\Admin\AppData\Local\Temp\uv8.1.exe"
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
        "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2776
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1124 -s 1052
      2⤵
      • Program crash
      PID:2956
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1124 -s 1544
      2⤵
      • Program crash
      PID:912
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1124 -ip 1124
    1⤵
      PID:3192
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1124 -ip 1124
      1⤵
        PID:2112
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3708 -ip 3708
        1⤵
          PID:5020

        Network

        MITRE ATT&CK Matrix ATT&CK v13

        Credential Access

        Unsecured Credentials

        3
        T1552

        Credentials In Files

        3
        T1552.001

        Discovery

        Query Registry

        3
        T1012

        System Information Discovery

        3
        T1082

        Peripheral Device Discovery

        1
        T1120

        Remote System Discovery

        1
        T1018

        Collection

        Data from Local System

        3
        T1005

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\Are.docx
          Filesize

          11KB

          MD5

          a33e5b189842c5867f46566bdbf7a095

          SHA1

          e1c06359f6a76da90d19e8fd95e79c832edb3196

          SHA256

          5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

          SHA512

          f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

        • C:\ProgramData\mozglue.dll
          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • C:\ProgramData\nss3.dll
          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • C:\Users\Admin\AppData\Local\Temp\BAKJKFHCAE.exe
          Filesize

          106KB

          MD5

          fe380780b5c35bd6d54541791151c2be

          SHA1

          7fe3a583cf91474c733f85cebf3c857682e269e1

          SHA256

          b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

          SHA512

          ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

        • C:\Users\Admin\AppData\Local\Temp\uv8.0.exe
          Filesize

          349KB

          MD5

          5ea309941d118b35358391111a722ed7

          SHA1

          1a0bc1f44e188a6983c7a0f52b76eb1070227264

          SHA256

          577d876ca52a4fe17525dba9fc3875cf2bb2c6f6de4d9dd0103d052a4790bf8f

          SHA512

          7071dff7bf8d1336ef97ead19ccf961e5c05e36ea9f4c724d1f4f016a66a4253043f93c96adcac3dd5b508d437428fe94e918cb7233dd1b2d170aac26a7fd731

        • C:\Users\Admin\AppData\Local\Temp\uv8.1.exe
          Filesize

          4.6MB

          MD5

          397926927bca55be4a77839b1c44de6e

          SHA1

          e10f3434ef3021c399dbba047832f02b3c898dbd

          SHA256

          4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

          SHA512

          cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

        • memory/1124-2-0x00000000022E0000-0x000000000234C000-memory.dmp
          Filesize

          432KB

        • memory/1124-3-0x0000000000400000-0x000000000048A000-memory.dmp
          Filesize

          552KB

        • memory/1124-1-0x00000000005F0000-0x00000000006F0000-memory.dmp
          Filesize

          1024KB

        • memory/1124-35-0x0000000000400000-0x000000000048A000-memory.dmp
          Filesize

          552KB

        • memory/1124-36-0x00000000022E0000-0x000000000234C000-memory.dmp
          Filesize

          432KB

        • memory/2776-173-0x00000225FE0C0000-0x00000225FE0E2000-memory.dmp
          Filesize

          136KB

        • memory/2776-163-0x00000225FCF80000-0x00000225FCF88000-memory.dmp
          Filesize

          32KB

        • memory/2776-199-0x00000225F8CE0000-0x00000225F8CF0000-memory.dmp
          Filesize

          64KB

        • memory/2776-198-0x00000225F8CE0000-0x00000225F8CF0000-memory.dmp
          Filesize

          64KB

        • memory/2776-197-0x00000225F8CE0000-0x00000225F8CF0000-memory.dmp
          Filesize

          64KB

        • memory/2776-193-0x00000225F8CE0000-0x00000225F8CF0000-memory.dmp
          Filesize

          64KB

        • memory/2776-141-0x00007FFFBC230000-0x00007FFFBCCF2000-memory.dmp
          Filesize

          10.8MB

        • memory/2776-142-0x00000225F2D40000-0x00000225F6638000-memory.dmp
          Filesize

          57.0MB

        • memory/2776-143-0x00000225F8CE0000-0x00000225F8CF0000-memory.dmp
          Filesize

          64KB

        • memory/2776-144-0x00000225F8EA0000-0x00000225F8FB0000-memory.dmp
          Filesize

          1.1MB

        • memory/2776-145-0x00000225F8440000-0x00000225F8450000-memory.dmp
          Filesize

          64KB

        • memory/2776-146-0x00000225F8460000-0x00000225F846C000-memory.dmp
          Filesize

          48KB

        • memory/2776-147-0x00000225F8450000-0x00000225F8464000-memory.dmp
          Filesize

          80KB

        • memory/2776-148-0x00000225F8C90000-0x00000225F8CB4000-memory.dmp
          Filesize

          144KB

        • memory/2776-149-0x00000225F8CB0000-0x00000225F8CBA000-memory.dmp
          Filesize

          40KB

        • memory/2776-151-0x00000225F9100000-0x00000225F91B2000-memory.dmp
          Filesize

          712KB

        • memory/2776-150-0x00000225F8CF0000-0x00000225F8D1A000-memory.dmp
          Filesize

          168KB

        • memory/2776-152-0x00000225F91B0000-0x00000225F922A000-memory.dmp
          Filesize

          488KB

        • memory/2776-153-0x00000225F8D20000-0x00000225F8D82000-memory.dmp
          Filesize

          392KB

        • memory/2776-154-0x00000225F92B0000-0x00000225F9326000-memory.dmp
          Filesize

          472KB

        • memory/2776-155-0x00000225F83E0000-0x00000225F83EA000-memory.dmp
          Filesize

          40KB

        • memory/2776-159-0x00000225F9330000-0x00000225F9630000-memory.dmp
          Filesize

          3.0MB

        • memory/2776-162-0x00000225F8CE0000-0x00000225F8CF0000-memory.dmp
          Filesize

          64KB

        • memory/2776-189-0x00007FFFBC230000-0x00007FFFBCCF2000-memory.dmp
          Filesize

          10.8MB

        • memory/2776-164-0x00000225FD690000-0x00000225FD6C8000-memory.dmp
          Filesize

          224KB

        • memory/2776-165-0x00000225FD650000-0x00000225FD65E000-memory.dmp
          Filesize

          56KB

        • memory/2776-166-0x00000225FD710000-0x00000225FD71A000-memory.dmp
          Filesize

          40KB

        • memory/2776-167-0x00000225FDD60000-0x00000225FDD82000-memory.dmp
          Filesize

          136KB

        • memory/2776-168-0x00000225FE2C0000-0x00000225FE7E8000-memory.dmp
          Filesize

          5.2MB

        • memory/2776-171-0x00000225FDDF0000-0x00000225FDE40000-memory.dmp
          Filesize

          320KB

        • memory/2776-172-0x00000225FDD80000-0x00000225FDD8C000-memory.dmp
          Filesize

          48KB

        • memory/2776-174-0x00000225FDDC0000-0x00000225FDDDE000-memory.dmp
          Filesize

          120KB

        • memory/3708-192-0x0000000000400000-0x000000000063B000-memory.dmp
          Filesize

          2.2MB

        • memory/3708-176-0x0000000000730000-0x0000000000830000-memory.dmp
          Filesize

          1024KB

        • memory/3708-26-0x0000000000730000-0x0000000000830000-memory.dmp
          Filesize

          1024KB

        • memory/3708-29-0x0000000000400000-0x000000000063B000-memory.dmp
          Filesize

          2.2MB

        • memory/3708-37-0x0000000061E00000-0x0000000061EF3000-memory.dmp
          Filesize

          972KB

        • memory/3708-127-0x0000000000400000-0x000000000063B000-memory.dmp
          Filesize

          2.2MB

        • memory/3708-27-0x0000000002200000-0x0000000002227000-memory.dmp
          Filesize

          156KB

        • memory/4636-196-0x0000000072410000-0x0000000072BC1000-memory.dmp
          Filesize

          7.7MB

        • memory/4636-191-0x0000000072410000-0x0000000072BC1000-memory.dmp
          Filesize

          7.7MB

        • memory/4636-190-0x0000000000940000-0x0000000000960000-memory.dmp
          Filesize

          128KB

        • memory/4692-140-0x0000000000400000-0x00000000008AD000-memory.dmp
          Filesize

          4.7MB

        • memory/4692-128-0x0000000000400000-0x00000000008AD000-memory.dmp
          Filesize

          4.7MB

        • memory/4692-23-0x0000000002760000-0x0000000002761000-memory.dmp
          Filesize

          4KB