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Analysis

  • max time kernel
    162s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/11/2022, 18:25

General

  • Target

    0c9e091285c6d82f3c0140bb06266edb17c9cd3faab32835b1aded34f810fd3f.exe

  • Size

    1.4MB

  • MD5

    a3e5ec5555b57a904cc84a9b096ad420

  • SHA1

    6d5284c72fa32beb4a7fc7939e6b61e9d9b83eb4

  • SHA256

    0c9e091285c6d82f3c0140bb06266edb17c9cd3faab32835b1aded34f810fd3f

  • SHA512

    134e418a2926520637a976ffc364a87a53e1d9e24ebfc5b0df9bfa701023ff6c394de5778e5e919a916218f38f51503b0580cd30121e831cba3e7f2538e7f0db

  • SSDEEP

    6144:AQbZvy6kqLkZLlUbHiJNnPwALifg9Ty2PoBISB5s2UJmh67OB0FARsKfpYT:A+pyXsmLlUri7PgI2XeOek671gsMps

Malware Config

Signatures

  • Imminent RAT

    Remote-access trojan based on Imminent Monitor remote admin software.

  • Modifies WinLogon for persistence 2 TTPs 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0c9e091285c6d82f3c0140bb06266edb17c9cd3faab32835b1aded34f810fd3f.exe
    "C:\Users\Admin\AppData\Local\Temp\0c9e091285c6d82f3c0140bb06266edb17c9cd3faab32835b1aded34f810fd3f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:3276
    • C:\Users\Admin\AppData\Roaming\winlogon.exe
      "C:\Users\Admin\AppData\Roaming\winlogon.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Users\Admin\AppData\Roaming\csrss.exe
        "C:\Users\Admin\AppData\Roaming\csrss.exe" -reg "explorer.exe, C:\Users\Admin\AppData\Roaming\winlogon.exe" -proc 4736 C:\Users\Admin\AppData\Roaming\winlogon.exe
        3⤵
        • Modifies WinLogon for persistence
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3068

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\csrss.exe

    Filesize

    1.4MB

    MD5

    a3e5ec5555b57a904cc84a9b096ad420

    SHA1

    6d5284c72fa32beb4a7fc7939e6b61e9d9b83eb4

    SHA256

    0c9e091285c6d82f3c0140bb06266edb17c9cd3faab32835b1aded34f810fd3f

    SHA512

    134e418a2926520637a976ffc364a87a53e1d9e24ebfc5b0df9bfa701023ff6c394de5778e5e919a916218f38f51503b0580cd30121e831cba3e7f2538e7f0db

  • C:\Users\Admin\AppData\Roaming\csrss.exe

    Filesize

    1.4MB

    MD5

    a3e5ec5555b57a904cc84a9b096ad420

    SHA1

    6d5284c72fa32beb4a7fc7939e6b61e9d9b83eb4

    SHA256

    0c9e091285c6d82f3c0140bb06266edb17c9cd3faab32835b1aded34f810fd3f

    SHA512

    134e418a2926520637a976ffc364a87a53e1d9e24ebfc5b0df9bfa701023ff6c394de5778e5e919a916218f38f51503b0580cd30121e831cba3e7f2538e7f0db

  • memory/3068-140-0x0000000074A00000-0x0000000074FB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3068-142-0x0000000074A00000-0x0000000074FB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3276-132-0x0000000074A00000-0x0000000074FB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3276-133-0x0000000074A00000-0x0000000074FB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3276-135-0x0000000074A00000-0x0000000074FB1000-memory.dmp

    Filesize

    5.7MB

  • memory/4736-137-0x0000000074A00000-0x0000000074FB1000-memory.dmp

    Filesize

    5.7MB

  • memory/4736-141-0x0000000074A00000-0x0000000074FB1000-memory.dmp

    Filesize

    5.7MB