Analysis

  • max time kernel
    150s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    27-06-2024 13:50

General

  • Target

    163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe

  • Size

    332KB

  • MD5

    163b14745b63876196be7dd7e91c1be2

  • SHA1

    c7c6940cf4f05ad67b5cb141d98c7c208b2e6885

  • SHA256

    083e6e89198bd3088d2798d4e22e72e577666cbc16884e464766504c70ef4276

  • SHA512

    795cfb77ef725c34aa62757cf6c321cf671c10825d832325c687b96bebbd9ccaf4db90df917d58d0a0d4ab50985dce174dee47836ea62eb916312bce2cfc9da6

  • SSDEEP

    6144:sYLtU7Ixhnhz5qLZWBRyve1+HxhV+baign+kuERMEnBa:7sI3lQK71870baign+kRXnI

Malware Config

Extracted

Family

darkcomet

Botnet

One-Dz

C2

fucksuck.myftp.org:100

Mutex

DC_MUTEX-BV4T666

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    isDoctiQ3i8k

  • 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 3 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.

  • Deletes itself 1 IoCs
  • 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
  • Drops file in System32 directory 3 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 64 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2796
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2632
    • 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:2800
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2816
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      PID:2960
    • C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
      "C:\Windows\system32\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:2740
      • 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:2736
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
            PID:2624

    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

    3
    T1562

    Disable or Modify Tools

    2
    T1562.001

    Disable or Modify System Firewall

    1
    T1562.004

    Hide Artifacts

    2
    T1564

    Hidden Files and Directories

    2
    T1564.001

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Windows\SysWOW64\MSDCSC\msdcsc.exe
      Filesize

      332KB

      MD5

      163b14745b63876196be7dd7e91c1be2

      SHA1

      c7c6940cf4f05ad67b5cb141d98c7c208b2e6885

      SHA256

      083e6e89198bd3088d2798d4e22e72e577666cbc16884e464766504c70ef4276

      SHA512

      795cfb77ef725c34aa62757cf6c321cf671c10825d832325c687b96bebbd9ccaf4db90df917d58d0a0d4ab50985dce174dee47836ea62eb916312bce2cfc9da6

    • memory/2624-72-0x00000000001E0000-0x00000000001E1000-memory.dmp
      Filesize

      4KB

    • memory/2740-33-0x0000000000400000-0x00000000004E6000-memory.dmp
      Filesize

      920KB

    • memory/2796-0-0x0000000000400000-0x00000000004E6000-memory.dmp
      Filesize

      920KB

    • memory/2796-1-0x0000000000270000-0x0000000000271000-memory.dmp
      Filesize

      4KB

    • memory/2796-28-0x0000000004240000-0x0000000004326000-memory.dmp
      Filesize

      920KB

    • memory/2796-27-0x0000000004240000-0x0000000004326000-memory.dmp
      Filesize

      920KB

    • memory/2796-73-0x0000000000400000-0x00000000004E6000-memory.dmp
      Filesize

      920KB

    • memory/2960-5-0x0000000000080000-0x0000000000081000-memory.dmp
      Filesize

      4KB

    • memory/2960-19-0x0000000000150000-0x0000000000151000-memory.dmp
      Filesize

      4KB