Analysis

  • max time kernel
    149s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    21/02/2025, 03:08

General

  • Target

    JaffaCakes118_0fda07a5e12bc40737255ba3f4379cdd.exe

  • Size

    693KB

  • MD5

    0fda07a5e12bc40737255ba3f4379cdd

  • SHA1

    177c003d406218129dd9e6c93286e1b5db31dad1

  • SHA256

    9218a75e1f0d8780c12a2c5061068aa8f2c0a865d62ea7da21bb91518d2cce39

  • SHA512

    aff66eb37ca1f36b93136fb59c517410c7d23addae86d2c2d09be3bf1e6856d3a153854c7a757fef879be023ac63b669abf4156ef3bce65fc3ebb8c871e8b307

  • SSDEEP

    12288:aZeEFQ4KHeyDuP+xQV1K0eNnG+8tAVAO2BQgeMCDvRdPQGUDBo/:aXzKLF01teNIAZeQgeM4FQGgy

Malware Config

Extracted

Family

darkcomet

Attributes
  • gencode

  • install

    false

  • offline_keylogger

    false

  • persistence

    false

rc4.plain

Extracted

Family

darkcomet

Botnet

Rs

C2

leetrsps.zapto.org:82

Mutex

DC_MUTEX-CCF7AKB

Attributes
  • InstallPath

    Windows Update\winupdate.exe

  • gencode

    h%c=94/%UYNd

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

rc4.plain

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 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Checks processor information in registry 2 TTPs 8 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fda07a5e12bc40737255ba3f4379cdd.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fda07a5e12bc40737255ba3f4379cdd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2340
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fda07a5e12bc40737255ba3f4379cdd.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fda07a5e12bc40737255ba3f4379cdd.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2264
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:2480
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\SysWOW64\explorer.exe"
        3⤵
          PID:2596
        • C:\Users\Admin\AppData\Roaming\Windows Update\winupdate.exe
          "C:\Users\Admin\AppData\Roaming\Windows Update\winupdate.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2700
          • C:\Users\Admin\AppData\Roaming\Windows Update\winupdate.exe
            "C:\Users\Admin\AppData\Roaming\Windows Update\winupdate.exe"
            4⤵
            • Modifies firewall policy service
            • Modifies security service
            • Windows security bypass
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Windows security modification
            • System Location Discovery: System Language Discovery
            • Checks processor information in registry
            • Enumerates system info in registry
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • System policy modification
            PID:2892

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Windows Update\winupdate.exe

      Filesize

      693KB

      MD5

      0fda07a5e12bc40737255ba3f4379cdd

      SHA1

      177c003d406218129dd9e6c93286e1b5db31dad1

      SHA256

      9218a75e1f0d8780c12a2c5061068aa8f2c0a865d62ea7da21bb91518d2cce39

      SHA512

      aff66eb37ca1f36b93136fb59c517410c7d23addae86d2c2d09be3bf1e6856d3a153854c7a757fef879be023ac63b669abf4156ef3bce65fc3ebb8c871e8b307

    • memory/2264-14-0x00000000002C0000-0x00000000002C1000-memory.dmp

      Filesize

      4KB

    • memory/2264-2-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-7-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-6-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-5-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-4-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-3-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-1-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-0-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-11-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2264-12-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-56-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-10-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2264-13-0x0000000013140000-0x00000000131F6000-memory.dmp

      Filesize

      728KB

    • memory/2480-16-0x0000000000100000-0x0000000000101000-memory.dmp

      Filesize

      4KB

    • memory/2480-42-0x0000000000400000-0x0000000000401000-memory.dmp

      Filesize

      4KB

    • memory/2596-49-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2596-47-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2596-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2596-44-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2596-50-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2596-82-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2892-75-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB