Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 13:12

General

  • Target

    6ea013f9f0eb1aa74f82928a81ecffd1_JaffaCakes118.exe

  • Size

    659KB

  • MD5

    6ea013f9f0eb1aa74f82928a81ecffd1

  • SHA1

    9c23422cfa55dea80866774ea16c019226175449

  • SHA256

    d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

  • SHA512

    888ef5266a4f761965aa176ddf7b8ae8b699f4b2ec7ab589679fad2f5fdd37b80da7d5d3290ed3f6ba1d29b60a338e7463e71f6c5e0ec7a491996977eda0eed5

  • SSDEEP

    12288:29HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hQ:SZ1xuVVjfFoynPaVBUR8f+kN10EBi

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

0.tcp.ngrok.io:10277

Mutex

DC_MUTEX-CYFYV25

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    834bxKalF1Bf

  • 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
  • Modifies firewall policy service 2 TTPs 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6ea013f9f0eb1aa74f82928a81ecffd1_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\6ea013f9f0eb1aa74f82928a81ecffd1_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\6ea013f9f0eb1aa74f82928a81ecffd1_JaffaCakes118.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2484
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\6ea013f9f0eb1aa74f82928a81ecffd1_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2588
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2584
    • 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
      • Executes dropped EXE
      • Windows security modification
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2828
      • 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
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1992
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
            PID:2772

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Create or Modify System Process

    2
    T1543

    Windows Service

    2
    T1543.003

    Privilege Escalation

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Create or Modify System Process

    2
    T1543

    Windows Service

    2
    T1543.003

    Defense Evasion

    Modify Registry

    7
    T1112

    Impair Defenses

    2
    T1562

    Disable or Modify Tools

    2
    T1562.001

    Hide Artifacts

    2
    T1564

    Hidden Files and Directories

    2
    T1564.001

    Discovery

    System Information Discovery

    1
    T1082

    Command and Control

    Web Service

    1
    T1102

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\Documents\MSDCSC\msdcsc.exe
      Filesize

      659KB

      MD5

      6ea013f9f0eb1aa74f82928a81ecffd1

      SHA1

      9c23422cfa55dea80866774ea16c019226175449

      SHA256

      d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

      SHA512

      888ef5266a4f761965aa176ddf7b8ae8b699f4b2ec7ab589679fad2f5fdd37b80da7d5d3290ed3f6ba1d29b60a338e7463e71f6c5e0ec7a491996977eda0eed5

    • memory/1924-0-0x0000000000270000-0x0000000000271000-memory.dmp
      Filesize

      4KB

    • memory/1924-53-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/1992-12-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/2772-14-0x0000000000080000-0x0000000000081000-memory.dmp
      Filesize

      4KB

    • memory/2772-52-0x0000000000170000-0x0000000000171000-memory.dmp
      Filesize

      4KB

    • memory/2828-13-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB