Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15/05/2024, 18:27

General

  • Target

    fuck.exe

  • Size

    1.1MB

  • MD5

    3ee6841e13ab3b14fb292f316d978b63

  • SHA1

    a1350928f6a12013e087f8c3bf6ff19418f4de85

  • SHA256

    da70a8f8696cd01ffa41596ed6c8ad6f880db3fc79a2955cb93ce9eec81059d9

  • SHA512

    64ba822ac323ccbb4fd8d1d7ce67607086b2d6dd60f7699c260570ba7517329fba73389a2b6fada33da1b33d9f323d5c5b063652973f806b49ccfdbda54787ca

  • SSDEEP

    24576:1CXYdVWtQjz9+S+YK/gm8iuViqJzJJZW6V4WdhrBWPsvj:LPWtAd+YK4m8rDJ+WbBEsvj

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

SteamGift__

C2

masterlaith.publicvm.com:5552

Mutex

88a41d3535aad80a532ad2e6fa138beb

Attributes
  • reg_key

    88a41d3535aad80a532ad2e6fa138beb

  • splitter

    |'|'|

Signatures

  • 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
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops autorun.inf file 1 TTPs 5 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).

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fuck.exe
    "C:\Users\Admin\AppData\Local\Temp\fuck.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3768
    • C:\ProgramData\server.exe
      "C:\ProgramData\server.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:2116
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\ProgramData\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1176
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM Exsample.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3572

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\server.exe

          Filesize

          1.1MB

          MD5

          3ee6841e13ab3b14fb292f316d978b63

          SHA1

          a1350928f6a12013e087f8c3bf6ff19418f4de85

          SHA256

          da70a8f8696cd01ffa41596ed6c8ad6f880db3fc79a2955cb93ce9eec81059d9

          SHA512

          64ba822ac323ccbb4fd8d1d7ce67607086b2d6dd60f7699c260570ba7517329fba73389a2b6fada33da1b33d9f323d5c5b063652973f806b49ccfdbda54787ca

        • memory/2116-34-0x0000000074450000-0x0000000074C01000-memory.dmp

          Filesize

          7.7MB

        • memory/2116-33-0x0000000074450000-0x0000000074C01000-memory.dmp

          Filesize

          7.7MB

        • memory/2116-23-0x0000000074450000-0x0000000074C01000-memory.dmp

          Filesize

          7.7MB

        • memory/2116-21-0x0000000074450000-0x0000000074C01000-memory.dmp

          Filesize

          7.7MB

        • memory/3768-3-0x0000000004BA0000-0x0000000005146000-memory.dmp

          Filesize

          5.6MB

        • memory/3768-6-0x00000000052D0000-0x0000000005326000-memory.dmp

          Filesize

          344KB

        • memory/3768-7-0x0000000074450000-0x0000000074C01000-memory.dmp

          Filesize

          7.7MB

        • memory/3768-8-0x0000000006130000-0x0000000006140000-memory.dmp

          Filesize

          64KB

        • memory/3768-5-0x00000000052B0000-0x00000000052BA000-memory.dmp

          Filesize

          40KB

        • memory/3768-4-0x00000000051A0000-0x0000000005232000-memory.dmp

          Filesize

          584KB

        • memory/3768-22-0x0000000074450000-0x0000000074C01000-memory.dmp

          Filesize

          7.7MB

        • memory/3768-0-0x000000007445E000-0x000000007445F000-memory.dmp

          Filesize

          4KB

        • memory/3768-2-0x0000000004B00000-0x0000000004B9C000-memory.dmp

          Filesize

          624KB

        • memory/3768-1-0x0000000000400000-0x0000000000514000-memory.dmp

          Filesize

          1.1MB