Analysis

  • max time kernel
    148s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-07-2024 15:11

General

  • Target

    7897837885b3a475f18e5ee864f7238a_JaffaCakes118.exe

  • Size

    331KB

  • MD5

    7897837885b3a475f18e5ee864f7238a

  • SHA1

    485882ba501347eb99489c10867bd1520decd1f5

  • SHA256

    9692260cb951a7685dd29e7b410ca5a086514a402ac9f36c7fc5d47ddbe06bf6

  • SHA512

    f2c6a420ae9161d5c67cbbccb037880498425ccb8efa335380c49234e193a654622e458f59e8e57a1823a990305b3de12a1ea99461003fb4e87feade785768f7

  • SSDEEP

    6144:hhH76Gd6Mqk84ZIjzJNiNr5ldxb6g1x080pqUJjZmSpUjVIH3soJ:hhxoMVJyfJNiN3N1x080oUJjZmcUjup

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-YV9537W

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    vtZamnSTfx5d

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 33 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7897837885b3a475f18e5ee864f7238a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\7897837885b3a475f18e5ee864f7238a_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:400
    • C:\Users\Admin\AppData\Local\Temp\7897837885b3a475f18e5ee864f7238a_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\7897837885b3a475f18e5ee864f7238a_JaffaCakes118.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2108
      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1912
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:644

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

    Filesize

    331KB

    MD5

    7897837885b3a475f18e5ee864f7238a

    SHA1

    485882ba501347eb99489c10867bd1520decd1f5

    SHA256

    9692260cb951a7685dd29e7b410ca5a086514a402ac9f36c7fc5d47ddbe06bf6

    SHA512

    f2c6a420ae9161d5c67cbbccb037880498425ccb8efa335380c49234e193a654622e458f59e8e57a1823a990305b3de12a1ea99461003fb4e87feade785768f7

  • memory/400-7-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/400-0-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/644-44-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-48-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-35-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-38-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-54-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-53-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-51-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-50-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-49-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-43-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-34-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-32-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-40-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-39-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-55-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-47-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-33-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-31-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-41-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/644-42-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1912-23-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1912-37-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2108-3-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2108-1-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2108-5-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2108-2-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2108-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2108-9-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2108-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2108-8-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB