Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-07-2024 22:14

General

  • Target

    71724dd56b95cfd21320f590f574443e_JaffaCakes118.exe

  • Size

    402KB

  • MD5

    71724dd56b95cfd21320f590f574443e

  • SHA1

    e1c8dd908425fcf802bc33675d3c48f894a7b238

  • SHA256

    01266e3f2e2c18d219ad878dcccf2717e5b8205d62d2a1afe231d76bd216c9f1

  • SHA512

    8793e1dbdd87d79cdf19841caf3f1818f4b8d57a6a009afee233231a95970a40991e287d643aff368830f447fd80e3f6d4ed5f3a145bb6931642f077e1221921

  • SSDEEP

    12288:rhxoMVJyfJNiN3N1x080oUJjZmcUjupNiP:rrdJyRNiN350r4IiP

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 37 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\71724dd56b95cfd21320f590f574443e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\71724dd56b95cfd21320f590f574443e_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Users\Admin\AppData\Local\Temp\71724dd56b95cfd21320f590f574443e_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\71724dd56b95cfd21320f590f574443e_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:216
      • 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:1448
        • 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:416

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    402KB

    MD5

    71724dd56b95cfd21320f590f574443e

    SHA1

    e1c8dd908425fcf802bc33675d3c48f894a7b238

    SHA256

    01266e3f2e2c18d219ad878dcccf2717e5b8205d62d2a1afe231d76bd216c9f1

    SHA512

    8793e1dbdd87d79cdf19841caf3f1818f4b8d57a6a009afee233231a95970a40991e287d643aff368830f447fd80e3f6d4ed5f3a145bb6931642f077e1221921

  • memory/216-12-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/216-20-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/216-4-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/216-8-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/216-6-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/216-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/216-5-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/216-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-36-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-50-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-58-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-57-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-55-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-54-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-53-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-52-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-51-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-49-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-47-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-40-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-37-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-35-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-41-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-43-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-42-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-44-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-45-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/416-46-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1448-39-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1448-28-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1448-26-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1448-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3056-0-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3056-11-0x000000000040E000-0x0000000000461000-memory.dmp

    Filesize

    332KB

  • memory/3056-1-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3056-2-0x000000000040E000-0x0000000000461000-memory.dmp

    Filesize

    332KB

  • memory/3056-3-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3056-9-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB