Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 17:59

General

  • Target

    9d0c1d9b11e1ce48d82a2ea03a0709f9_JaffaCakes118.exe

  • Size

    762KB

  • MD5

    9d0c1d9b11e1ce48d82a2ea03a0709f9

  • SHA1

    69854a50c08f07ffbb384eaa248616bc429c824f

  • SHA256

    a5c70a268a567eddb9d7a95b9760a273800800fecaa60668c707e2557440e327

  • SHA512

    6f5fb454f256053a5ae925b88df46e434e614992be65a064e1fc0b5f107a7400ae54aacb164b72db0344b6775281e19a3fabf214a04587cc8f617e7ad57c0b71

  • SSDEEP

    12288:j9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hzbH:tZ1xuVVjfFoynPaVBUR8f+kN10EBVL

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

guysf.no-ip.biz:1604

Mutex

DC_MUTEX-CSMN1X9

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    QeC7oBWrh8EE

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables Task Manager via registry modification
  • 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
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9d0c1d9b11e1ce48d82a2ea03a0709f9_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\9d0c1d9b11e1ce48d82a2ea03a0709f9_JaffaCakes118.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:1284
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\9d0c1d9b11e1ce48d82a2ea03a0709f9_JaffaCakes118.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4300
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\9d0c1d9b11e1ce48d82a2ea03a0709f9_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4080
    • 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:3464
      • 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:2916
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\SLB RULES.TXT
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2636
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4932
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2816
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3432
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4224

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\SLB RULES.TXT

    Filesize

    5KB

    MD5

    4b1c21c161caf75651f2a58c4fe1d762

    SHA1

    17e28ed06d1337efc14b1cbd08ad25690ea8a491

    SHA256

    8a13216ff4789cd03f5a6c79458581974c540f98ac4d2cbcfec4dd874f61df4e

    SHA512

    3cf7ac11c1189c6aee559ef861ebc762e3168a55192d0f4756a0312e0ded04813610f90ad1e551a6e79b8f0b91e77a0b9e44525f991b516297646d2c13ac7128

  • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

    Filesize

    762KB

    MD5

    9d0c1d9b11e1ce48d82a2ea03a0709f9

    SHA1

    69854a50c08f07ffbb384eaa248616bc429c824f

    SHA256

    a5c70a268a567eddb9d7a95b9760a273800800fecaa60668c707e2557440e327

    SHA512

    6f5fb454f256053a5ae925b88df46e434e614992be65a064e1fc0b5f107a7400ae54aacb164b72db0344b6775281e19a3fabf214a04587cc8f617e7ad57c0b71

  • memory/1284-0-0x0000000002350000-0x0000000002351000-memory.dmp

    Filesize

    4KB

  • memory/1284-69-0x0000000000400000-0x00000000004CC000-memory.dmp

    Filesize

    816KB

  • memory/2816-67-0x0000000000400000-0x00000000004CC000-memory.dmp

    Filesize

    816KB

  • memory/3432-66-0x0000000000400000-0x00000000004CC000-memory.dmp

    Filesize

    816KB

  • memory/4224-68-0x0000000001020000-0x0000000001021000-memory.dmp

    Filesize

    4KB

  • memory/4932-7-0x0000000000500000-0x0000000000501000-memory.dmp

    Filesize

    4KB