Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-02-2024 06:45

General

  • Target

    a87d7d7848bc287758c88af1cd7d95ae.exe

  • Size

    89KB

  • MD5

    a87d7d7848bc287758c88af1cd7d95ae

  • SHA1

    b731e18e2c296f2ebc0104d2c7767ce4d8ebe27e

  • SHA256

    1313a049e8bde8b7c39aaea57fc1061df557d49eb2f48e5dd73e438d32eae158

  • SHA512

    d20da7eadd1419f2072ffd577a4e892e4ee60b3195a9b9c3cdd8d719b0f4da094f54f8581c8f2640e2411c52b487566b4bbbaee9c89490d8a40f2e8a95a530af

  • SSDEEP

    1536:vSMJV+N0qf18HE42faceE/G4t3dMGoZrh8UH1WepL6AV+1o2c:vtJa3f18HT2F6OMTZeUVWML64/

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

192.168.64.129:5552

Mutex

643f582a162261e0ba7633b7acfd7ec1

Attributes
  • reg_key

    643f582a162261e0ba7633b7acfd7ec1

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 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 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.exe
    "C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3132
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1188
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:2948

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    89KB

    MD5

    a87d7d7848bc287758c88af1cd7d95ae

    SHA1

    b731e18e2c296f2ebc0104d2c7767ce4d8ebe27e

    SHA256

    1313a049e8bde8b7c39aaea57fc1061df557d49eb2f48e5dd73e438d32eae158

    SHA512

    d20da7eadd1419f2072ffd577a4e892e4ee60b3195a9b9c3cdd8d719b0f4da094f54f8581c8f2640e2411c52b487566b4bbbaee9c89490d8a40f2e8a95a530af

  • memory/1188-25-0x0000000005330000-0x0000000005340000-memory.dmp

    Filesize

    64KB

  • memory/1188-24-0x0000000074D30000-0x00000000754E0000-memory.dmp

    Filesize

    7.7MB

  • memory/1188-23-0x0000000005330000-0x0000000005340000-memory.dmp

    Filesize

    64KB

  • memory/1188-22-0x0000000074D30000-0x00000000754E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3132-3-0x0000000005F00000-0x00000000064A4000-memory.dmp

    Filesize

    5.6MB

  • memory/3132-6-0x00000000059D0000-0x00000000059DA000-memory.dmp

    Filesize

    40KB

  • memory/3132-7-0x0000000005C30000-0x0000000005C86000-memory.dmp

    Filesize

    344KB

  • memory/3132-8-0x0000000005D30000-0x0000000005D3C000-memory.dmp

    Filesize

    48KB

  • memory/3132-5-0x0000000005C20000-0x0000000005C30000-memory.dmp

    Filesize

    64KB

  • memory/3132-4-0x00000000059F0000-0x0000000005A82000-memory.dmp

    Filesize

    584KB

  • memory/3132-21-0x0000000074D30000-0x00000000754E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3132-0-0x0000000000F10000-0x0000000000F2E000-memory.dmp

    Filesize

    120KB

  • memory/3132-2-0x00000000058B0000-0x000000000594C000-memory.dmp

    Filesize

    624KB

  • memory/3132-1-0x0000000074D30000-0x00000000754E0000-memory.dmp

    Filesize

    7.7MB