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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • 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, 05:45

General

  • Target

    MOhui.exe

  • Size

    208KB

  • MD5

    5791a91914003e2092f958a30f477fee

  • SHA1

    91610dd4e2ba51be830f1cc576c51f0c5b8e76ce

  • SHA256

    ec5aafc513b950544018cfc4b2bebdf7f7edbb09783f76027f28fcf56c4b6433

  • SHA512

    dccce72364adbad71685b0170ec253af45e8e13dcceb93a53316373cc7b37a77754f5909b785fd38883d91f4988230ae4ce35a3381bc43dcd6b372086bc6e797

  • SSDEEP

    3072:eg2XPv0WW+nz9NgNg8gt72gnTDyuJAweOqiHCKgcmKq/Ybrgl+xbGlSDxajDM1iT:egOMWhPyg8gFXTJFxu4kYoUL18l4

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 31 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MOhui.exe
    "C:\Users\Admin\AppData\Local\Temp\MOhui.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2736
    • 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:452
      • C:\Windows\SYSTEM32\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\uhyhher.exe" "uhyhher.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:4168

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    208KB

    MD5

    5791a91914003e2092f958a30f477fee

    SHA1

    91610dd4e2ba51be830f1cc576c51f0c5b8e76ce

    SHA256

    ec5aafc513b950544018cfc4b2bebdf7f7edbb09783f76027f28fcf56c4b6433

    SHA512

    dccce72364adbad71685b0170ec253af45e8e13dcceb93a53316373cc7b37a77754f5909b785fd38883d91f4988230ae4ce35a3381bc43dcd6b372086bc6e797

  • memory/452-26-0x0000000001E40000-0x0000000001E50000-memory.dmp

    Filesize

    64KB

  • memory/452-28-0x00007FFCED040000-0x00007FFCED9E1000-memory.dmp

    Filesize

    9.6MB

  • memory/452-32-0x0000000001E40000-0x0000000001E50000-memory.dmp

    Filesize

    64KB

  • memory/452-31-0x0000000001E40000-0x0000000001E50000-memory.dmp

    Filesize

    64KB

  • memory/452-30-0x0000000001E40000-0x0000000001E50000-memory.dmp

    Filesize

    64KB

  • memory/452-29-0x0000000001E40000-0x0000000001E50000-memory.dmp

    Filesize

    64KB

  • memory/452-27-0x0000000001E40000-0x0000000001E50000-memory.dmp

    Filesize

    64KB

  • memory/452-25-0x00007FFCED040000-0x00007FFCED9E1000-memory.dmp

    Filesize

    9.6MB

  • memory/452-22-0x00007FFCED040000-0x00007FFCED9E1000-memory.dmp

    Filesize

    9.6MB

  • memory/452-23-0x0000000001E40000-0x0000000001E50000-memory.dmp

    Filesize

    64KB

  • memory/2736-3-0x00007FFCED040000-0x00007FFCED9E1000-memory.dmp

    Filesize

    9.6MB

  • memory/2736-1-0x0000000001920000-0x0000000001930000-memory.dmp

    Filesize

    64KB

  • memory/2736-9-0x0000000001AD0000-0x0000000001ADC000-memory.dmp

    Filesize

    48KB

  • memory/2736-8-0x0000000001920000-0x0000000001930000-memory.dmp

    Filesize

    64KB

  • memory/2736-0-0x00007FFCED040000-0x00007FFCED9E1000-memory.dmp

    Filesize

    9.6MB

  • memory/2736-7-0x0000000001920000-0x0000000001930000-memory.dmp

    Filesize

    64KB

  • memory/2736-24-0x00007FFCED040000-0x00007FFCED9E1000-memory.dmp

    Filesize

    9.6MB

  • memory/2736-6-0x0000000001A10000-0x0000000001A18000-memory.dmp

    Filesize

    32KB

  • memory/2736-5-0x000000001DD50000-0x000000001DDF6000-memory.dmp

    Filesize

    664KB

  • memory/2736-4-0x000000001D1F0000-0x000000001D28C000-memory.dmp

    Filesize

    624KB

  • memory/2736-2-0x000000001D880000-0x000000001DD4E000-memory.dmp

    Filesize

    4.8MB