Overview

overview

10

Static

static

10

1phc1YJN.exe

windows7-x64

10

1phc1YJN.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/06/2023, 17:03

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General

  • Target
    1phc1YJN.exe
  • Size 37KB
  • Sample230615-vknwmsae31
  • SHA256 9da4778fce03b654f62009b3d88958213f139b2f35fe1bed438100fae35bdfbf
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
njrattrupashotevasionpersistencetrojan

Malware Config

Extracted

Family

  • njrat

Version

  • im523

Botnet

  • TrupAshot

C2

  • documents-elegant.at.ply.gg:54835

Mutex

  • 4a87b5397a2736773782f50e108b2da4

Attributes
  • reg_key

    4a87b5397a2736773782f50e108b2da4

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • 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
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1phc1YJN.exe
    "C:\Users\Admin\AppData\Local\Temp\1phc1YJN.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Users\Admin\AppData\Roaming\conhost.exe
      "C:\Users\Admin\AppData\Roaming\conhost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1276
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\conhost.exe" "conhost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1832

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        conhost.exe
        • Path C:\Users\Admin\AppData\Roaming\conhost.exe
        • Size 37KB
        • SHA256 9da4778fce03b654f62009b3d88958213f139b2f35fe1bed438100fae35bdfbf
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        conhost.exe
        • Path C:\Users\Admin\AppData\Roaming\conhost.exe
        • Size 37KB
        • SHA256 9da4778fce03b654f62009b3d88958213f139b2f35fe1bed438100fae35bdfbf
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        conhost.exe
        • Path C:\Users\Admin\AppData\Roaming\conhost.exe
        • Size 37KB
        • SHA256 9da4778fce03b654f62009b3d88958213f139b2f35fe1bed438100fae35bdfbf
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/1276-144-0x00000000011A0000-0x00000000011B0000-memory.dmp
        Download

        memory/1276-150-0x00000000011A0000-0x00000000011B0000-memory.dmp
        Download

        memory/1380-133-0x0000000000F60000-0x0000000000F70000-memory.dmp
        Download

        memory/1380-135-0x0000000000F60000-0x0000000000F70000-memory.dmp
        Download