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Analysis

  • max time kernel
    151s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/10/2023, 16:33

General

  • Target

    NEAS.20b06a72b000ed9c2d9db774c543202171728537aa4a43a7c8b5fdab7bf026c6exe_JC.exe

  • Size

    65KB

  • MD5

    b1290bf36ae40c7d6ac7dfac9f399848

  • SHA1

    fbcfebb104fe31aeae0a24b3bd28d92280f012aa

  • SHA256

    20b06a72b000ed9c2d9db774c543202171728537aa4a43a7c8b5fdab7bf026c6

  • SHA512

    e76d15ca4fbc01ef955ad08bf5cd8725ce1e709f17ae1929dbc79afba51f77c9d39050d3edbe0757397312b0a75598f569254fb067aec0fb7af537617180e240

  • SSDEEP

    1536:lcxR4cEoN36tLQviFw1iW6SBnvb0fLteF3nLrB9z3neaF9bNS9vM:lcxR4cEoN36tLQviFCbhBnYfWl9zuaFn

Malware Config

Extracted

Family

njrat

Version

Platinum

Botnet

HacKed

C2

127.0.0.1:1604

Mutex

RuntimeBroker.exe

Attributes
  • reg_key

    RuntimeBroker.exe

  • splitter

    |Ghost|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.20b06a72b000ed9c2d9db774c543202171728537aa4a43a7c8b5fdab7bf026c6exe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.20b06a72b000ed9c2d9db774c543202171728537aa4a43a7c8b5fdab7bf026c6exe_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4936
    • C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
      "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      PID:1532
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 5 & Del "C:\Users\Admin\AppData\Local\Temp\NEAS.20b06a72b000ed9c2d9db774c543202171728537aa4a43a7c8b5fdab7bf026c6exe_JC.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\choice.exe
        choice /C Y /N /D Y /T 5
        3⤵
          PID:560

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe

      Filesize

      65KB

      MD5

      b1290bf36ae40c7d6ac7dfac9f399848

      SHA1

      fbcfebb104fe31aeae0a24b3bd28d92280f012aa

      SHA256

      20b06a72b000ed9c2d9db774c543202171728537aa4a43a7c8b5fdab7bf026c6

      SHA512

      e76d15ca4fbc01ef955ad08bf5cd8725ce1e709f17ae1929dbc79afba51f77c9d39050d3edbe0757397312b0a75598f569254fb067aec0fb7af537617180e240

    • C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe

      Filesize

      65KB

      MD5

      b1290bf36ae40c7d6ac7dfac9f399848

      SHA1

      fbcfebb104fe31aeae0a24b3bd28d92280f012aa

      SHA256

      20b06a72b000ed9c2d9db774c543202171728537aa4a43a7c8b5fdab7bf026c6

      SHA512

      e76d15ca4fbc01ef955ad08bf5cd8725ce1e709f17ae1929dbc79afba51f77c9d39050d3edbe0757397312b0a75598f569254fb067aec0fb7af537617180e240

    • C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe

      Filesize

      65KB

      MD5

      b1290bf36ae40c7d6ac7dfac9f399848

      SHA1

      fbcfebb104fe31aeae0a24b3bd28d92280f012aa

      SHA256

      20b06a72b000ed9c2d9db774c543202171728537aa4a43a7c8b5fdab7bf026c6

      SHA512

      e76d15ca4fbc01ef955ad08bf5cd8725ce1e709f17ae1929dbc79afba51f77c9d39050d3edbe0757397312b0a75598f569254fb067aec0fb7af537617180e240

    • memory/1532-14-0x0000000075140000-0x00000000756F1000-memory.dmp

      Filesize

      5.7MB

    • memory/1532-16-0x0000000075140000-0x00000000756F1000-memory.dmp

      Filesize

      5.7MB

    • memory/1532-20-0x0000000075140000-0x00000000756F1000-memory.dmp

      Filesize

      5.7MB

    • memory/1532-21-0x0000000075140000-0x00000000756F1000-memory.dmp

      Filesize

      5.7MB

    • memory/4936-0-0x0000000075140000-0x00000000756F1000-memory.dmp

      Filesize

      5.7MB

    • memory/4936-1-0x0000000075140000-0x00000000756F1000-memory.dmp

      Filesize

      5.7MB

    • memory/4936-2-0x0000000001230000-0x0000000001240000-memory.dmp

      Filesize

      64KB

    • memory/4936-15-0x0000000075140000-0x00000000756F1000-memory.dmp

      Filesize

      5.7MB