Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2024 07:57

General

  • Target

    c6b1af8516d36733d841e87092f56107_JaffaCakes118.exe

  • Size

    396KB

  • MD5

    c6b1af8516d36733d841e87092f56107

  • SHA1

    6e2b218ead69c56c6248c3b49daaea3ee5c8bd26

  • SHA256

    def135902d22702f94ed346f31696d3d74684adca1b3b5ac7c249ff04e1655d6

  • SHA512

    3d291bbd17b054825c96166c279804d9e81ecff5754d187973d91bb4056fb453071b26b96a60d2a8b4aa3fdb40bfcf35f57a7c01f9396dd4c391c5f2847def75

  • SSDEEP

    6144:1y1Q0s3riMH7msG+ttUh5X5+KDuG287r80I5s7vkcpO4if4cIpH81aTukv5Im:81QXmMA+tCh5QBG287r8W7sHJ+g6p

Malware Config

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
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of SetThreadContext 4 IoCs
  • UPX packed file 22 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 8 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • 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
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c6b1af8516d36733d841e87092f56107_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\c6b1af8516d36733d841e87092f56107_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Users\Admin\AppData\Local\Temp\c6b1af8516d36733d841e87092f56107_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\c6b1af8516d36733d841e87092f56107_JaffaCakes118.exe"
      2⤵
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1444
      • C:\Users\Admin\AppData\Local\Temp\c6b1af8516d36733d841e87092f56107_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\c6b1af8516d36733d841e87092f56107_JaffaCakes118.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Checks BIOS information in registry
        • Loads dropped DLL
        • Adds Run key to start application
        • 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:2768
        • C:\Users\Admin\AppData\Roaming\Windows Defender\taskeng.exe
          "C:\Users\Admin\AppData\Roaming\Windows Defender\taskeng.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2576
          • C:\Users\Admin\AppData\Roaming\Windows Defender\taskeng.exe
            "C:\Users\Admin\AppData\Roaming\Windows Defender\taskeng.exe"
            5⤵
            • Executes dropped EXE
            • Writes to the Master Boot Record (MBR)
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2164
            • C:\Users\Admin\AppData\Roaming\Windows Defender\taskeng.exe
              "C:\Users\Admin\AppData\Roaming\Windows Defender\taskeng.exe"
              6⤵
              • Modifies firewall policy service
              • Modifies security service
              • Windows security bypass
              • Disables RegEdit via registry modification
              • 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 behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              • System policy modification
              PID:1980
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2980
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 2
            5⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:2336

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat

    Filesize

    119B

    MD5

    4965067e2f3106479320d17647be07b6

    SHA1

    b08297ec632c66380008f2f004ac6d0f5dbe6e7b

    SHA256

    bcfa1dcfebb4278d1f9d2dd83342d1695a22d60620d0773452b06588c7ef1b6d

    SHA512

    6f8d5d7f5311b79feaa81dde54f9f157cf33762f54c505010721776e2a0c88cc753898cd80362068d234f7b7d00020402bcfbb4b65ec77783399fd63ee5a58a9

  • \Users\Admin\AppData\Roaming\Windows Defender\taskeng.exe

    Filesize

    396KB

    MD5

    c6b1af8516d36733d841e87092f56107

    SHA1

    6e2b218ead69c56c6248c3b49daaea3ee5c8bd26

    SHA256

    def135902d22702f94ed346f31696d3d74684adca1b3b5ac7c249ff04e1655d6

    SHA512

    3d291bbd17b054825c96166c279804d9e81ecff5754d187973d91bb4056fb453071b26b96a60d2a8b4aa3fdb40bfcf35f57a7c01f9396dd4c391c5f2847def75

  • memory/1444-98-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/1444-5-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/1444-15-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/1444-13-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/1444-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1444-7-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/1444-4-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/1964-16-0x0000000000590000-0x0000000000690000-memory.dmp

    Filesize

    1024KB

  • memory/1980-100-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-90-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-93-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-94-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-95-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-96-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-97-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-92-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-101-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-103-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1980-91-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2164-88-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/2768-27-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-60-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-35-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-34-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-32-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-31-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-33-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-30-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-29-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-21-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-23-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2768-19-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB