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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/01/2024, 05:51

General

  • Target

    3020-4-0x00000000021A0000-0x00000000021AC000-memory.exe

  • Size

    48KB

  • MD5

    76946303d472f728b2cc2b67c1453fee

  • SHA1

    a070923cf779145dd2244d339061e4a1dceaf4aa

  • SHA256

    f3f9271ae8799336acfda326fba3e1cd7dbba9fe2b07aa4b1eda90e79e649793

  • SHA512

    846358a5852c193846d3607a9e993b23f58b76cbab7f2a3b0e013cbff737d1f18c25f115aba3c0cc8d1611f0e78a1d85764dc7f660a2f865ebaa145e52d41e9d

  • SSDEEP

    384:VPoWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZGS:Vo7O89p2rRpcnuK

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

127.0.0.1:5552

Mutex

162f71f7ffbaf34cff578886b8650868

Attributes
  • reg_key

    162f71f7ffbaf34cff578886b8650868

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3020-4-0x00000000021A0000-0x00000000021AC000-memory.exe
    "C:\Users\Admin\AppData\Local\Temp\3020-4-0x00000000021A0000-0x00000000021AC000-memory.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5088
    • C:\Users\Admin\AppData\Local\Temp\uhyhher.exe
      "C:\Users\Admin\AppData\Local\Temp\uhyhher.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\uhyhher.exe" "uhyhher.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    76946303d472f728b2cc2b67c1453fee

    SHA1

    a070923cf779145dd2244d339061e4a1dceaf4aa

    SHA256

    f3f9271ae8799336acfda326fba3e1cd7dbba9fe2b07aa4b1eda90e79e649793

    SHA512

    846358a5852c193846d3607a9e993b23f58b76cbab7f2a3b0e013cbff737d1f18c25f115aba3c0cc8d1611f0e78a1d85764dc7f660a2f865ebaa145e52d41e9d

  • memory/4692-13-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/4692-14-0x00000000018B0000-0x00000000018C0000-memory.dmp

    Filesize

    64KB

  • memory/4692-15-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/4692-16-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/4692-17-0x00000000018B0000-0x00000000018C0000-memory.dmp

    Filesize

    64KB

  • memory/5088-0-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/5088-1-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/5088-2-0x0000000000FE0000-0x0000000000FF0000-memory.dmp

    Filesize

    64KB

  • memory/5088-12-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB