Analysis

  • max time kernel
    178s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 15:32

General

  • Target

    db3d8735d2ca09e5121050315622bc13f175b4dbf4a2f1033a9a53fc81c02dec.exe

  • Size

    457KB

  • MD5

    0243c5e1b104b582816043b410921bb0

  • SHA1

    2e185966a790f5d621d309d84e5f4e64e6c4782c

  • SHA256

    db3d8735d2ca09e5121050315622bc13f175b4dbf4a2f1033a9a53fc81c02dec

  • SHA512

    6d7f718036c8c7dd306408e072199c4261aa72e7e41cdb7b7b8e88697641b43918d04d56d9ad2b2a7097043ad5f26a56c8ff41b62be04d131a3c83a1c3fa8efc

  • SSDEEP

    6144:JbeZ3OkIDFxZ683VHyjIVYc95+e0bnMRZdRA/DSgMfp5jOS8cgGYE9b9qCDaf:JMe5xZ6+JVYc9erbPmTjOS6jYe

Malware Config

Signatures

  • Imminent RAT

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

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Suspicious use of SetThreadContext 1 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\db3d8735d2ca09e5121050315622bc13f175b4dbf4a2f1033a9a53fc81c02dec.exe
    "C:\Users\Admin\AppData\Local\Temp\db3d8735d2ca09e5121050315622bc13f175b4dbf4a2f1033a9a53fc81c02dec.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:3268
    • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
      "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2536
      • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
        "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe"
        3⤵
        • Executes dropped EXE
        • Drops desktop.ini file(s)
        • Drops file in Windows directory
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:224
      • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe
        "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe" -keyhide -prochide 224 -reg C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe -proc 224 C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4020

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    457KB

    MD5

    0243c5e1b104b582816043b410921bb0

    SHA1

    2e185966a790f5d621d309d84e5f4e64e6c4782c

    SHA256

    db3d8735d2ca09e5121050315622bc13f175b4dbf4a2f1033a9a53fc81c02dec

    SHA512

    6d7f718036c8c7dd306408e072199c4261aa72e7e41cdb7b7b8e88697641b43918d04d56d9ad2b2a7097043ad5f26a56c8ff41b62be04d131a3c83a1c3fa8efc

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

    Filesize

    457KB

    MD5

    0243c5e1b104b582816043b410921bb0

    SHA1

    2e185966a790f5d621d309d84e5f4e64e6c4782c

    SHA256

    db3d8735d2ca09e5121050315622bc13f175b4dbf4a2f1033a9a53fc81c02dec

    SHA512

    6d7f718036c8c7dd306408e072199c4261aa72e7e41cdb7b7b8e88697641b43918d04d56d9ad2b2a7097043ad5f26a56c8ff41b62be04d131a3c83a1c3fa8efc

  • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe

    Filesize

    457KB

    MD5

    0243c5e1b104b582816043b410921bb0

    SHA1

    2e185966a790f5d621d309d84e5f4e64e6c4782c

    SHA256

    db3d8735d2ca09e5121050315622bc13f175b4dbf4a2f1033a9a53fc81c02dec

    SHA512

    6d7f718036c8c7dd306408e072199c4261aa72e7e41cdb7b7b8e88697641b43918d04d56d9ad2b2a7097043ad5f26a56c8ff41b62be04d131a3c83a1c3fa8efc

  • memory/224-137-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/224-149-0x00000000746C0000-0x0000000074C71000-memory.dmp

    Filesize

    5.7MB

  • memory/224-139-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/224-138-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/224-136-0x0000000000000000-mapping.dmp

  • memory/224-142-0x00000000746C0000-0x0000000074C71000-memory.dmp

    Filesize

    5.7MB

  • memory/2536-147-0x00000000746C0000-0x0000000074C71000-memory.dmp

    Filesize

    5.7MB

  • memory/2536-134-0x0000000000000000-mapping.dmp

  • memory/2536-143-0x00000000746C0000-0x0000000074C71000-memory.dmp

    Filesize

    5.7MB

  • memory/3268-135-0x00000000746C0000-0x0000000074C71000-memory.dmp

    Filesize

    5.7MB

  • memory/3268-133-0x00000000746C0000-0x0000000074C71000-memory.dmp

    Filesize

    5.7MB

  • memory/4020-144-0x0000000000000000-mapping.dmp

  • memory/4020-148-0x00000000746C0000-0x0000000074C71000-memory.dmp

    Filesize

    5.7MB

  • memory/4020-150-0x00000000746C0000-0x0000000074C71000-memory.dmp

    Filesize

    5.7MB