Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22/03/2025, 17:10

General

  • Target

    JaffaCakes118_86d9e56c3e555dc6030998cf95259be5.exe

  • Size

    1.6MB

  • MD5

    86d9e56c3e555dc6030998cf95259be5

  • SHA1

    8a9df020ac0f32b55016919bfaa00abbe559763b

  • SHA256

    1bc3088494944f59c99d118c27d185286905e137259e98de721dd439a6e2e662

  • SHA512

    c6b120315240cc9671fb0c4d91fd9007e0272317d70fe3f4a9b174402986fd6fb1bfb407b0551ac1e16868afa6a3df3424a9263492c323bd4bc17cf9b4609315

  • SSDEEP

    24576:/+DraMOVm++uBIWvr8KpP3e6DftzhJYoj/PAQS1wpWD5TBELMNMhpXTSF74fB8kk:GDtOVmruBr8K1e6D2oIB1w0F9aFBbN

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

192.168.1.96:1337

Mutex

DC_MUTEX-WUDUVMN

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    DA7q.hvWq�Sa

  • install

    true

  • offline_keylogger

    false

  • persistence

    true

  • reg_key

    winupdater

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

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

  • Deletes itself 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Themida packer 20 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_86d9e56c3e555dc6030998cf95259be5.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_86d9e56c3e555dc6030998cf95259be5.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      PID:2728
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\SysWOW64\explorer.exe"
      2⤵
      • Modifies firewall policy service
      • Windows security bypass
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3008
      • C:\Windows\SysWOW64\notepad.exe
        C:\Windows\SysWOW64\notepad.exe
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2356
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\SysWOW64\notepad.exe
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2228-68-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2228-39-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2228-1-0x0000000001CA0000-0x0000000001D94000-memory.dmp

    Filesize

    976KB

  • memory/2228-3-0x0000000013141000-0x000000001318D000-memory.dmp

    Filesize

    304KB

  • memory/2228-4-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2228-38-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2228-5-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2228-67-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2228-2-0x0000000000270000-0x0000000000271000-memory.dmp

    Filesize

    4KB

  • memory/2228-45-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2228-0-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2228-7-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/2728-8-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2728-35-0x00000000001F0000-0x00000000001F1000-memory.dmp

    Filesize

    4KB

  • memory/3008-72-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-77-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-71-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-70-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-42-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3008-40-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-74-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-146-0x0000000000140000-0x0000000000141000-memory.dmp

    Filesize

    4KB

  • memory/3008-75-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-76-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-73-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-78-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-96-0x0000000000140000-0x0000000000141000-memory.dmp

    Filesize

    4KB

  • memory/3008-79-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3008-145-0x0000000013140000-0x000000001348F000-memory.dmp

    Filesize

    3.3MB

  • memory/3020-65-0x00000000001D0000-0x00000000001D1000-memory.dmp

    Filesize

    4KB