Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2025, 10:33

General

  • Target

    JaffaCakes118_20522ba3d09261e2f424bb0ffa8fdbf0.exe

  • Size

    283KB

  • MD5

    20522ba3d09261e2f424bb0ffa8fdbf0

  • SHA1

    bcce2e0f97b04bae367df2d9d46b0171f703157a

  • SHA256

    7fe8fab91462f47342d946e396bf1ec613630d3ad0fed3c04c0ad25432601f20

  • SHA512

    8694b9af3f9562effc912e4c4a8d3ffc2d92f1999f7955cc3577c1c4f01e0b15b8edeb73f09deb18dd2e49fe3123087c48995481d960d61ef62fd3841c5d5c66

  • SSDEEP

    6144:GcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37B:GcW7KEZlPzCy37B

Malware Config

Extracted

Family

darkcomet

Botnet

HaCkEd

C2

neon714825396.no-ip.biz:1604

neon714825396.no-ip.biz:1605

Mutex

DC_MUTEX-QCNA4L5

Attributes
  • InstallPath

    Microsoft\Updater.exe

  • gencode

    ZKR2TJFjtnXu

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    sv0host.exe

rc4.plain

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 18 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_20522ba3d09261e2f424bb0ffa8fdbf0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_20522ba3d09261e2f424bb0ffa8fdbf0.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3604
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_20522ba3d09261e2f424bb0ffa8fdbf0.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_20522ba3d09261e2f424bb0ffa8fdbf0.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4224
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4168
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4276
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4288
    • C:\Users\Admin\AppData\Roaming\Microsoft\Updater.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Updater.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3996
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Updater.exe

    Filesize

    283KB

    MD5

    20522ba3d09261e2f424bb0ffa8fdbf0

    SHA1

    bcce2e0f97b04bae367df2d9d46b0171f703157a

    SHA256

    7fe8fab91462f47342d946e396bf1ec613630d3ad0fed3c04c0ad25432601f20

    SHA512

    8694b9af3f9562effc912e4c4a8d3ffc2d92f1999f7955cc3577c1c4f01e0b15b8edeb73f09deb18dd2e49fe3123087c48995481d960d61ef62fd3841c5d5c66

  • memory/3604-65-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3604-1-0x0000000000690000-0x0000000000691000-memory.dmp

    Filesize

    4KB

  • memory/3604-0-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3720-64-0x0000000000450000-0x0000000000451000-memory.dmp

    Filesize

    4KB

  • memory/3996-71-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-73-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-68-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-69-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-70-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-81-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-72-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-67-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-74-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-75-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-76-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-77-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-78-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-79-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/3996-80-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/4288-5-0x00000000004C0000-0x00000000004C1000-memory.dmp

    Filesize

    4KB