Resubmissions

27/11/2024, 13:29

241127-qrb37svpcv10

27/11/2024, 09:27

241127-le54astrfj10

Analysis

  • max time kernel
    1199s
  • max time network
    920s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2024, 09:27

General

  • Target
    23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe
  • Size 169KB
  • Sample241127-le54astrfj
  • SHA256 23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • njrat

Version
  • 0.7d

Botnet
  • HacKed

C2
  • cheat12.ddns.net:57

Mutex
  • a412988a99c974058615f1975119a5d1

Attributes
  • reg_key

    a412988a99c974058615f1975119a5d1

  • splitter

    |'|'|

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe
    "C:\Users\Admin\AppData\Local\Temp\23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Users\Admin\AppData\Local\Temp\explorer.exe
      "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2464
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\explorer.exe" "explorer.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:1660

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        explorer.exe

        • Path \Users\Admin\AppData\Local\Temp\explorer.exe
        • Size 169KB
        • SHA256 23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc
        • MD5 SHA1 SHA512 SSDEEP

        memory/2348-0-0x0000000074C01000-0x0000000074C02000-memory.dmp

        memory/2348-2-0x0000000074C00000-0x00000000751AB000-memory.dmp

        memory/2348-1-0x0000000074C00000-0x00000000751AB000-memory.dmp

        memory/2348-12-0x0000000074C00000-0x00000000751AB000-memory.dmp

        memory/2464-10-0x0000000074C00000-0x00000000751AB000-memory.dmp

        memory/2464-11-0x0000000074C00000-0x00000000751AB000-memory.dmp

        memory/2464-13-0x0000000074C00000-0x00000000751AB000-memory.dmp

        memory/2464-15-0x0000000074C00000-0x00000000751AB000-memory.dmp