Analysis

  • max time kernel
    152s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-02-2024 01:44

General

  • Target

    a7e5f463382b52c236822e311a59bb2b.exe

  • Size

    444KB

  • MD5

    a7e5f463382b52c236822e311a59bb2b

  • SHA1

    3ffc4f11573f858e3ff4c663576c6a36535c8078

  • SHA256

    82733477c5f9c6d503c68563a8f8ce782d00f46678a8965182c7603191b4c078

  • SHA512

    e128d58eb43524feea93b41e0a0d3a654bdee59e2664538cf0678aec69cc5675c461546954ba7baa4b197e7297816cfbcfacc603b8971a6afc55850a81bf11b1

  • SSDEEP

    3072:NJacj8v7wQ+ZGx7w8wjjP8I1IU8RjrzzvUWAOZjfKdLgY7:NJPgv7wJZ87wBjYI1IUwrIOZyf7

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

Hacked

C2

abdo95.ddns.net:1177

Mutex

ed6e2bf930f6d35b3ac57c049d10ac2c

Attributes
  • reg_key

    ed6e2bf930f6d35b3ac57c049d10ac2c

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 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 2 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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).

  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7e5f463382b52c236822e311a59bb2b.exe
    "C:\Users\Admin\AppData\Local\Temp\a7e5f463382b52c236822e311a59bb2b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2160
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c test.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2076
      • C:\Users\Admin\AppData\Local\Temp\test.exe
        test.exe
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:2788
        • C:\Users\Admin\AppData\Local\Temp\Explorer.exe
          "C:\Users\Admin\AppData\Local\Temp\Explorer.exe"
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4388
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explorer.exe" "Explorer.exe" ENABLE
            5⤵
            • Modifies Windows Firewall
            PID:2812
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3816 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1288

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\test.exe

      Filesize

      29KB

      MD5

      fc42513e45503d510fb011bbb309e51e

      SHA1

      e9741466f6e68dadb9e874f12d5b62fe14693741

      SHA256

      766240fd9026a04e4a7f20240f699133eef24a969e242afdd471ad0a179cefe3

      SHA512

      0f2a88f96a8a47abe062ccca986d2b3d98310374629c9067b19dbfeb73f23ba411b3ca5ae3877684770fb2d25947305b42c38a913a329e6220de6cd5d539a8ca

    • memory/2160-0-0x0000000000400000-0x0000000000498000-memory.dmp

      Filesize

      608KB

    • memory/2160-8-0x0000000000400000-0x0000000000498000-memory.dmp

      Filesize

      608KB

    • memory/2160-23-0x0000000000400000-0x0000000000498000-memory.dmp

      Filesize

      608KB

    • memory/2788-5-0x0000000075480000-0x0000000075A31000-memory.dmp

      Filesize

      5.7MB

    • memory/2788-6-0x0000000075480000-0x0000000075A31000-memory.dmp

      Filesize

      5.7MB

    • memory/2788-7-0x0000000000B00000-0x0000000000B10000-memory.dmp

      Filesize

      64KB

    • memory/2788-21-0x0000000075480000-0x0000000075A31000-memory.dmp

      Filesize

      5.7MB

    • memory/4388-20-0x0000000075480000-0x0000000075A31000-memory.dmp

      Filesize

      5.7MB

    • memory/4388-19-0x0000000001160000-0x0000000001170000-memory.dmp

      Filesize

      64KB

    • memory/4388-18-0x0000000075480000-0x0000000075A31000-memory.dmp

      Filesize

      5.7MB

    • memory/4388-24-0x0000000001160000-0x0000000001170000-memory.dmp

      Filesize

      64KB

    • memory/4388-25-0x0000000075480000-0x0000000075A31000-memory.dmp

      Filesize

      5.7MB

    • memory/4388-26-0x0000000001160000-0x0000000001170000-memory.dmp

      Filesize

      64KB

    • memory/4388-27-0x0000000001160000-0x0000000001170000-memory.dmp

      Filesize

      64KB

    • memory/4388-28-0x0000000001160000-0x0000000001170000-memory.dmp

      Filesize

      64KB

    • memory/4388-29-0x0000000001160000-0x0000000001170000-memory.dmp

      Filesize

      64KB