Analysis

  • max time kernel
    150s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    25/02/2025, 23:48

General

  • Target
    JaffaCakes118_232b80864d5ba9a1ba3e03897fd7b93f.exe
  • Size 318KB
  • Sample250225-3trynavl14
  • SHA256 e4549f60c4abfa88f65d525e1aa00c427391389bf8214b638c390839a536ba56
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • darkcomet

Botnet
  • Guest16

C2
  • ljcybergate.no-ip.biz:6346

Mutex
  • DC_MUTEX-Y2DG4MD

Attributes
  • gencode

    Nul2-0kkNB1P

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

rc4.plain

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • UPX packed file 14 IoCs

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

  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 49 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_232b80864d5ba9a1ba3e03897fd7b93f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_232b80864d5ba9a1ba3e03897fd7b93f.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2216
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
      C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2716
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
          PID:2908
      • C:\Users\Admin\AppData\Local\Temp\System\nvscpaisvr.exe
        "C:\Users\Admin\AppData\Local\Temp\System\nvscpaisvr.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2732
        • C:\Users\Admin\AppData\Local\Temp\System\SearchFilerHost.exe
          "C:\Users\Admin\AppData\Local\Temp\System\SearchFilerHost.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2140
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
            4⤵
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2660
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
              5⤵
                PID:2108

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            SearchFilerHost.exe

            • Path C:\Users\Admin\AppData\Local\Temp\System\SearchFilerHost.exe
            • Size 318KB
            • SHA256 e4549f60c4abfa88f65d525e1aa00c427391389bf8214b638c390839a536ba56
            • MD5 SHA1 SHA512 SSDEEP

            nvscpaisvr.exe

            • Path C:\Users\Admin\AppData\Local\Temp\System\nvscpaisvr.exe
            • Size 38KB
            • SHA256 e93fbcb8cca2099537203f4b1ac981988ea8f114b2f021935030d9b5d16d19e1
            • MD5 SHA1 SHA512 SSDEEP

            memory/2216-0-0x0000000074B21000-0x0000000074B22000-memory.dmp

            memory/2216-1-0x0000000074B20000-0x00000000750CB000-memory.dmp

            memory/2216-2-0x0000000074B20000-0x00000000750CB000-memory.dmp

            memory/2216-50-0x0000000074B20000-0x00000000750CB000-memory.dmp

            memory/2660-44-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2660-46-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2660-47-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2660-48-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-19-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-17-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-21-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-31-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-29-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-33-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-9-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-16-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            memory/2716-15-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-7-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2716-11-0x0000000000400000-0x00000000004B5000-memory.dmp

            memory/2908-32-0x0000000010000000-0x000000001000F000-memory.dmp