Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    19-04-2024 09:24

General

  • Target

    f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe

  • Size

    732KB

  • MD5

    f9ffef8cc5c3608c3b4b03f3ab3693a4

  • SHA1

    f85e2745ce0f2f404d97236cd5a751f931e4a3ff

  • SHA256

    e3211bb4471cb96576a110f6f81779acaa742d8a6732191bcec307c317dec612

  • SHA512

    fa9d89cf9813db7ec65b6c5f266938ebe2653216cbf272e3095727e70a559f93292028f845161021c1ae85da691bbd764b2ea47ee8a19cc88cfdcb188f0deadb

  • SSDEEP

    6144:/f9mhu3Ch4Wr5QlAFydXnzg8Ynu2NVwnxD6qmSMD05ceHo2qtOasCppppppbLLLE:/f9mk84Wr5XodXzgNu5nxDsS4GIps

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

steaminformation.no-ip.biz:1177

Mutex

DC_MUTEX-DNU7BFF

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    1ALxCPeHcaCS

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    ChromeUpdater

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 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 2 IoCs
  • Loads dropped DLL 3 IoCs
  • UPX packed file 13 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 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 46 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2224
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2520
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe" +s +h
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:2488
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2540
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:2300
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        PID:2420
      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2456
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1584
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
              PID:1248

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

      Filesize

      732KB

      MD5

      f9ffef8cc5c3608c3b4b03f3ab3693a4

      SHA1

      f85e2745ce0f2f404d97236cd5a751f931e4a3ff

      SHA256

      e3211bb4471cb96576a110f6f81779acaa742d8a6732191bcec307c317dec612

      SHA512

      fa9d89cf9813db7ec65b6c5f266938ebe2653216cbf272e3095727e70a559f93292028f845161021c1ae85da691bbd764b2ea47ee8a19cc88cfdcb188f0deadb

    • memory/1248-99-0x0000000001D70000-0x0000000001D71000-memory.dmp

      Filesize

      4KB

    • memory/1584-105-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/1584-71-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/1584-70-0x00000000003F0000-0x00000000003F1000-memory.dmp

      Filesize

      4KB

    • memory/1584-68-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/1584-69-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2224-11-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-16-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-17-0x00000000003E0000-0x00000000003E1000-memory.dmp

      Filesize

      4KB

    • memory/2224-4-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-102-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-13-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-12-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-2-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-10-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-14-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2224-6-0x0000000000400000-0x00000000004E8000-memory.dmp

      Filesize

      928KB

    • memory/2420-21-0x0000000000080000-0x0000000000081000-memory.dmp

      Filesize

      4KB

    • memory/2420-42-0x00000000008E0000-0x00000000008E1000-memory.dmp

      Filesize

      4KB