Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-08-2024 18:59

General

  • Target

    819df246b27da35f467f59c80f167bc9_JaffaCakes118.exe

  • Size

    350KB

  • MD5

    819df246b27da35f467f59c80f167bc9

  • SHA1

    1e37271655b1e9499de89b2e836138151e1dd7f7

  • SHA256

    eacf46e22b979eceb17b7d63ade9fbaae70a7aa10346cf7bf0bf0cd374c53f1a

  • SHA512

    b04ef5971b941df40c3427a6a39774c9f0f993b6d2b4c858bd1ffcaeeb5570fd1491236af52ac437902de0e451a71230b0e3aed7f4a0d98e818e28f7e67a02a1

  • SSDEEP

    6144:4D7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZDh585LLTMdi:4l8E4w5huat7UovONzbXwZ58dMd0QZhw

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

iwinuwin.no-ip.biz:1604

Mutex

DC_MUTEX-DB8SYQ3

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    A1EK50iyckHV

  • 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 1 IoCs
  • UPX packed file 5 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 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 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 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\819df246b27da35f467f59c80f167bc9_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\819df246b27da35f467f59c80f167bc9_JaffaCakes118.exe"
    1⤵
    • 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:4196
    • C:\MSDCSC\msdcsc.exe
      "C:\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1776
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4984
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:224

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\MSDCSC\msdcsc.exe

    Filesize

    350KB

    MD5

    819df246b27da35f467f59c80f167bc9

    SHA1

    1e37271655b1e9499de89b2e836138151e1dd7f7

    SHA256

    eacf46e22b979eceb17b7d63ade9fbaae70a7aa10346cf7bf0bf0cd374c53f1a

    SHA512

    b04ef5971b941df40c3427a6a39774c9f0f993b6d2b4c858bd1ffcaeeb5570fd1491236af52ac437902de0e451a71230b0e3aed7f4a0d98e818e28f7e67a02a1

  • memory/224-20-0x0000000000560000-0x0000000000561000-memory.dmp

    Filesize

    4KB

  • memory/1776-16-0x00000000008D0000-0x00000000008D1000-memory.dmp

    Filesize

    4KB

  • memory/1776-19-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/4196-0-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/4196-1-0x0000000000B00000-0x0000000000B01000-memory.dmp

    Filesize

    4KB

  • memory/4196-15-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB

  • memory/4984-17-0x0000000000400000-0x00000000004EB000-memory.dmp

    Filesize

    940KB