Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-03-2023 08:08

General

  • Target

    5846a4f316160ded59379aaecc48de08.exe

  • Size

    103KB

  • MD5

    5846a4f316160ded59379aaecc48de08

  • SHA1

    b5af1332a27e9e7a70b85dded3ee294a7b6b2446

  • SHA256

    2ca10a991b5151eb236b4faed3a08e7f44153286b53dea588f888dc0174af8a3

  • SHA512

    ff43812896e14b9efecd00a642fd374e4d60fd4f9389a620b9c85138f757bf950677cbba102513a2cfc01f5e1990f04e24cb1b6ef7fe055829cae8fadca3d93e

  • SSDEEP

    768:NAY1lN7oYUGF6DrM+rMRa8NunC6tRJghs:NAY1vcdGMc+gRJNV4J

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Geforce Experience

C2

2.tcp.eu.ngrok.io:17425

Mutex

00c8a057ad6a6d7c6c7858e5303b7a44

Attributes
  • reg_key

    00c8a057ad6a6d7c6c7858e5303b7a44

  • 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.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5846a4f316160ded59379aaecc48de08.exe
    "C:\Users\Admin\AppData\Local\Temp\5846a4f316160ded59379aaecc48de08.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4384
    • C:\ProgramData\Geforce Experience.exe
      "C:\ProgramData\Geforce Experience.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4860
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\ProgramData\Geforce Experience.exe" "Geforce Experience.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:4324

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\Geforce Experience.exe

    Filesize

    103KB

    MD5

    5846a4f316160ded59379aaecc48de08

    SHA1

    b5af1332a27e9e7a70b85dded3ee294a7b6b2446

    SHA256

    2ca10a991b5151eb236b4faed3a08e7f44153286b53dea588f888dc0174af8a3

    SHA512

    ff43812896e14b9efecd00a642fd374e4d60fd4f9389a620b9c85138f757bf950677cbba102513a2cfc01f5e1990f04e24cb1b6ef7fe055829cae8fadca3d93e

  • C:\ProgramData\Geforce Experience.exe

    Filesize

    103KB

    MD5

    5846a4f316160ded59379aaecc48de08

    SHA1

    b5af1332a27e9e7a70b85dded3ee294a7b6b2446

    SHA256

    2ca10a991b5151eb236b4faed3a08e7f44153286b53dea588f888dc0174af8a3

    SHA512

    ff43812896e14b9efecd00a642fd374e4d60fd4f9389a620b9c85138f757bf950677cbba102513a2cfc01f5e1990f04e24cb1b6ef7fe055829cae8fadca3d93e

  • C:\ProgramData\Geforce Experience.exe

    Filesize

    103KB

    MD5

    5846a4f316160ded59379aaecc48de08

    SHA1

    b5af1332a27e9e7a70b85dded3ee294a7b6b2446

    SHA256

    2ca10a991b5151eb236b4faed3a08e7f44153286b53dea588f888dc0174af8a3

    SHA512

    ff43812896e14b9efecd00a642fd374e4d60fd4f9389a620b9c85138f757bf950677cbba102513a2cfc01f5e1990f04e24cb1b6ef7fe055829cae8fadca3d93e

  • memory/4384-133-0x0000000000670000-0x0000000000680000-memory.dmp

    Filesize

    64KB

  • memory/4860-143-0x0000000000CD0000-0x0000000000CE0000-memory.dmp

    Filesize

    64KB

  • memory/4860-145-0x0000000000CD0000-0x0000000000CE0000-memory.dmp

    Filesize

    64KB