Overview

overview

10

Static

static

10

3e361edc82...95.exe

windows7-x64

10

3e361edc82...95.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/10/2022, 02:34

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General

  • Target
    3e361edc828ebc551573d3e28be3b295.exe
  • Size 46KB
  • Sample221014-c2fbqachhj
  • SHA256 4c0abcb1e8d0205bce6f78dfc47bdc65f5e9f27e4279547fc1149c17b4fbc3ab
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
njrathaxpcevasionpersistencetrojan

Malware Config

Extracted

Family

  • njrat

Version

  • im523

Botnet

  • HAXPC

C2

  • enderop44-36084.portmap.host:36084

Mutex

  • 3d331bcce43ca74aba3fe5b393e79935

Attributes
  • reg_key

    3d331bcce43ca74aba3fe5b393e79935

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Windows directory 3 IoCs
  • 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\3e361edc828ebc551573d3e28be3b295.exe
    "C:\Users\Admin\AppData\Local\Temp\3e361edc828ebc551573d3e28be3b295.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:4692
    • C:\Windows\WinExplorer.exe
      "C:\Windows\WinExplorer.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3772
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\WinExplorer.exe" "WinExplorer.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:4324

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        WinExplorer.exe
        • Path C:\Windows\WinExplorer.exe
        • Size 46KB
        • SHA256 4c0abcb1e8d0205bce6f78dfc47bdc65f5e9f27e4279547fc1149c17b4fbc3ab
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        WinExplorer.exe
        • Path C:\Windows\WinExplorer.exe
        • Size 46KB
        • SHA256 4c0abcb1e8d0205bce6f78dfc47bdc65f5e9f27e4279547fc1149c17b4fbc3ab
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/3772-137-0x0000000074F90000-0x0000000075541000-memory.dmp
        Download

        memory/3772-139-0x0000000074F90000-0x0000000075541000-memory.dmp
        Download

        memory/4692-132-0x0000000074F90000-0x0000000075541000-memory.dmp
        Download

        memory/4692-136-0x0000000074F90000-0x0000000075541000-memory.dmp
        Download