Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    27-06-2024 16:38

General

  • Target

    16b8315c6de1994bdcbc0faf574a162b_JaffaCakes118.exe

  • Size

    300KB

  • MD5

    16b8315c6de1994bdcbc0faf574a162b

  • SHA1

    38c2018b835dcc8dd6e6c156f7619c8e0acc493d

  • SHA256

    018556978f8a8e862bb57db11a55e0be62b424db127b66cd77451fe970b30ee0

  • SHA512

    85f5c29486979cb3480fbfa9ab302a29463b060b12dc3aa95785037cfdc2b7f917492f8a1f3a7043d80ef09dca38b908b0f4423907f31148b8c554323fdca4f2

  • SSDEEP

    6144:63EriZWNoVdGEu3j1LdH+gYOFtDD02M14rqM:8EWdGn3jzH+ca5M

Malware Config

Extracted

Family

darkcomet

Botnet

User

C2

97.81.46.17:1604

socksproxy1.serveftp.com:1604

Mutex

DC_MUTEX-R0MQYLT

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    SkFtw2Fer8G2

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • UPX packed file 9 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16b8315c6de1994bdcbc0faf574a162b_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\16b8315c6de1994bdcbc0faf574a162b_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1572
    • C:\Users\Admin\AppData\Roaming\msconfig.exe
      "C:\Users\Admin\AppData\Roaming\msconfig.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2612
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        3⤵
        • Modifies WinLogon for persistence
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2476
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2468
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
            5⤵
            • Sets file to hidden
            • Drops file in Windows directory
            • Views/modifies file attributes
            PID:2368
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2464
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
            5⤵
            • Sets file to hidden
            • Drops file in Windows directory
            • Views/modifies file attributes
            PID:284
        • C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
          "C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe"
          4⤵
          • Executes dropped EXE
          PID:2920

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe

    Filesize

    1.1MB

    MD5

    34aa912defa18c2c129f1e09d75c1d7e

    SHA1

    9c3046324657505a30ecd9b1fdb46c05bde7d470

    SHA256

    6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

    SHA512

    d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

  • \Users\Admin\AppData\Roaming\msconfig.exe

    Filesize

    300KB

    MD5

    16b8315c6de1994bdcbc0faf574a162b

    SHA1

    38c2018b835dcc8dd6e6c156f7619c8e0acc493d

    SHA256

    018556978f8a8e862bb57db11a55e0be62b424db127b66cd77451fe970b30ee0

    SHA512

    85f5c29486979cb3480fbfa9ab302a29463b060b12dc3aa95785037cfdc2b7f917492f8a1f3a7043d80ef09dca38b908b0f4423907f31148b8c554323fdca4f2

  • memory/1572-15-0x0000000074C60000-0x000000007520B000-memory.dmp

    Filesize

    5.7MB

  • memory/1572-2-0x0000000074C60000-0x000000007520B000-memory.dmp

    Filesize

    5.7MB

  • memory/1572-1-0x0000000074C60000-0x000000007520B000-memory.dmp

    Filesize

    5.7MB

  • memory/1572-0-0x0000000074C61000-0x0000000074C62000-memory.dmp

    Filesize

    4KB

  • memory/2476-24-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-17-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-29-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2476-26-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-27-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-39-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-21-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-20-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-30-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2476-28-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2612-16-0x0000000074C60000-0x000000007520B000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-19-0x0000000074C60000-0x000000007520B000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-25-0x0000000074C60000-0x000000007520B000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-13-0x0000000074C60000-0x000000007520B000-memory.dmp

    Filesize

    5.7MB