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Analysis

  • max time kernel
    149s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MOhui.exe
    "C:\Users\Admin\AppData\Local\Temp\MOhui.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2136
    • 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:2816
      • 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:2704

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    208KB

    MD5

    5791a91914003e2092f958a30f477fee

    SHA1

    91610dd4e2ba51be830f1cc576c51f0c5b8e76ce

    SHA256

    ec5aafc513b950544018cfc4b2bebdf7f7edbb09783f76027f28fcf56c4b6433

    SHA512

    dccce72364adbad71685b0170ec253af45e8e13dcceb93a53316373cc7b37a77754f5909b785fd38883d91f4988230ae4ce35a3381bc43dcd6b372086bc6e797

  • memory/2136-13-0x000007FEF6270000-0x000007FEF6C0D000-memory.dmp

    Filesize

    9.6MB

  • memory/2136-2-0x000007FEF6270000-0x000007FEF6C0D000-memory.dmp

    Filesize

    9.6MB

  • memory/2136-3-0x0000000002350000-0x00000000023D0000-memory.dmp

    Filesize

    512KB

  • memory/2136-4-0x0000000000720000-0x000000000072C000-memory.dmp

    Filesize

    48KB

  • memory/2136-1-0x0000000002350000-0x00000000023D0000-memory.dmp

    Filesize

    512KB

  • memory/2136-0-0x000007FEF6270000-0x000007FEF6C0D000-memory.dmp

    Filesize

    9.6MB

  • memory/2816-14-0x00000000020D0000-0x0000000002150000-memory.dmp

    Filesize

    512KB

  • memory/2816-12-0x000007FEF6270000-0x000007FEF6C0D000-memory.dmp

    Filesize

    9.6MB

  • memory/2816-15-0x000007FEF6270000-0x000007FEF6C0D000-memory.dmp

    Filesize

    9.6MB

  • memory/2816-16-0x00000000020D0000-0x0000000002150000-memory.dmp

    Filesize

    512KB

  • memory/2816-17-0x00000000020D0000-0x0000000002150000-memory.dmp

    Filesize

    512KB

  • memory/2816-18-0x000007FEF6270000-0x000007FEF6C0D000-memory.dmp

    Filesize

    9.6MB