Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-08-2024 06:49

General

  • Target

    89673c1d2e00671c71a2ab8037cb7da3_JaffaCakes118.exe

  • Size

    890KB

  • MD5

    89673c1d2e00671c71a2ab8037cb7da3

  • SHA1

    b13a9c7bbcd79cd38b6182da0c22a7426784f0c3

  • SHA256

    8c2df3f9cdcef9fd08faf79d1d8eb233e8e5daf3fab6689d67445120ddd2ba7b

  • SHA512

    31ac5a99a22f8168e748ebf21b44b7d926381835715626d234fbe2055e1e0a5be150db94469acff357fbf6a5cbd5ce359d20256107a6fffa9c3c591af776ff68

  • SSDEEP

    12288:xTmBJtebrqexwPbp1iYXgrlh6fznP2y0+bUjCCPAbpaTu626AZq2X2QJ4N0:xq7teaexwX+lh87l9gjCZbpVfN4mp

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

smr9.no-ip.org:1604

Mutex

DC_MUTEX-NJSZLY8

Attributes
  • InstallPath

    MSDCSC\lsass.exe

  • gencode

    6xtSkc229rlk

  • install

    true

  • offline_keylogger

    false

  • password

    123456

  • persistence

    true

  • reg_key

    lsass.exe

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
  • Adds Run key to start application 2 TTPs 2 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\89673c1d2e00671c71a2ab8037cb7da3_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\89673c1d2e00671c71a2ab8037cb7da3_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4304
    • C:\Users\Admin\AppData\Local\Temp\89673c1d2e00671c71a2ab8037cb7da3_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\89673c1d2e00671c71a2ab8037cb7da3_JaffaCakes118.exe
      2⤵
      • 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:3768
      • C:\MSDCSC\lsass.exe
        "C:\MSDCSC\lsass.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3636
        • C:\MSDCSC\lsass.exe
          C:\MSDCSC\lsass.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:620

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\MSDCSC\lsass.exe

    Filesize

    890KB

    MD5

    89673c1d2e00671c71a2ab8037cb7da3

    SHA1

    b13a9c7bbcd79cd38b6182da0c22a7426784f0c3

    SHA256

    8c2df3f9cdcef9fd08faf79d1d8eb233e8e5daf3fab6689d67445120ddd2ba7b

    SHA512

    31ac5a99a22f8168e748ebf21b44b7d926381835715626d234fbe2055e1e0a5be150db94469acff357fbf6a5cbd5ce359d20256107a6fffa9c3c591af776ff68

  • memory/620-73-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-72-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-80-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-64-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-78-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-77-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-65-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-76-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-75-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-74-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-71-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-70-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-62-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-67-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-81-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-79-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-69-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/620-63-0x0000000002330000-0x0000000002331000-memory.dmp

    Filesize

    4KB

  • memory/620-68-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3636-66-0x0000000000400000-0x00000000004E6000-memory.dmp

    Filesize

    920KB

  • memory/3768-16-0x0000000002340000-0x0000000002341000-memory.dmp

    Filesize

    4KB

  • memory/3768-8-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-10-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-1-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-2-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-6-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-4-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-0-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-12-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-7-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3768-49-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4304-11-0x0000000000400000-0x00000000004E6000-memory.dmp

    Filesize

    920KB