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Analysis

  • max time kernel
    151s
  • max time network
    158s
  • 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, 05:42

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 29 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:2396
    • 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:2448
      • 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:2372

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    208KB

    MD5

    5791a91914003e2092f958a30f477fee

    SHA1

    91610dd4e2ba51be830f1cc576c51f0c5b8e76ce

    SHA256

    ec5aafc513b950544018cfc4b2bebdf7f7edbb09783f76027f28fcf56c4b6433

    SHA512

    dccce72364adbad71685b0170ec253af45e8e13dcceb93a53316373cc7b37a77754f5909b785fd38883d91f4988230ae4ce35a3381bc43dcd6b372086bc6e797

  • memory/2396-5-0x000000001CF30000-0x000000001CFD6000-memory.dmp

    Filesize

    664KB

  • memory/2396-21-0x0000000001630000-0x0000000001640000-memory.dmp

    Filesize

    64KB

  • memory/2396-3-0x000000001C9B0000-0x000000001CE7E000-memory.dmp

    Filesize

    4.8MB

  • memory/2396-4-0x000000001C410000-0x000000001C4AC000-memory.dmp

    Filesize

    624KB

  • memory/2396-0-0x00007FF977370000-0x00007FF977D11000-memory.dmp

    Filesize

    9.6MB

  • memory/2396-6-0x0000000000F80000-0x0000000000F88000-memory.dmp

    Filesize

    32KB

  • memory/2396-7-0x0000000001630000-0x0000000001640000-memory.dmp

    Filesize

    64KB

  • memory/2396-8-0x0000000000F90000-0x0000000000F9C000-memory.dmp

    Filesize

    48KB

  • memory/2396-9-0x00007FF977370000-0x00007FF977D11000-memory.dmp

    Filesize

    9.6MB

  • memory/2396-1-0x00007FF977370000-0x00007FF977D11000-memory.dmp

    Filesize

    9.6MB

  • memory/2396-2-0x0000000001630000-0x0000000001640000-memory.dmp

    Filesize

    64KB

  • memory/2396-26-0x00007FF977370000-0x00007FF977D11000-memory.dmp

    Filesize

    9.6MB

  • memory/2448-23-0x00007FF977370000-0x00007FF977D11000-memory.dmp

    Filesize

    9.6MB

  • memory/2448-25-0x0000000001530000-0x0000000001540000-memory.dmp

    Filesize

    64KB

  • memory/2448-24-0x00007FF977370000-0x00007FF977D11000-memory.dmp

    Filesize

    9.6MB

  • memory/2448-27-0x0000000001530000-0x0000000001540000-memory.dmp

    Filesize

    64KB

  • memory/2448-28-0x00007FF977370000-0x00007FF977D11000-memory.dmp

    Filesize

    9.6MB

  • memory/2448-29-0x00007FF977370000-0x00007FF977D11000-memory.dmp

    Filesize

    9.6MB

  • memory/2448-30-0x0000000001530000-0x0000000001540000-memory.dmp

    Filesize

    64KB

  • memory/2448-31-0x0000000001530000-0x0000000001540000-memory.dmp

    Filesize

    64KB

  • memory/2448-32-0x0000000001530000-0x0000000001540000-memory.dmp

    Filesize

    64KB