Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/10/2022, 08:40

General

  • Target
    dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6.exe
  • Size 39KB
  • Sample221018-kk6fksfdcp
  • SHA256 dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • limerat

Attributes
  • aes_key

    xdr11796

  • antivm

    true

  • c2_url

    https://pastebin.com/raw/Mu49qhCq

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    Github.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \

  • usb_spread

    false

Signatures

  • LimeRAT

    Simple yet powerful RAT for Windows machines written in .NET.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6.exe
    "C:\Users\Admin\AppData\Local\Temp\dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3884
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Github.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:420
    • C:\Users\Admin\AppData\Roaming\Github.exe
      "C:\Users\Admin\AppData\Roaming\Github.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4808

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Github.exe

        • Path C:\Users\Admin\AppData\Roaming\Github.exe
        • Size 39KB
        • SHA256 dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6
        • MD5 SHA1 SHA512 SSDEEP

        Github.exe

        • Path C:\Users\Admin\AppData\Roaming\Github.exe
        • Size 39KB
        • SHA256 dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6
        • MD5 SHA1 SHA512 SSDEEP

        memory/3884-132-0x0000000074E30000-0x00000000753E1000-memory.dmp

        memory/3884-137-0x0000000074E30000-0x00000000753E1000-memory.dmp

        memory/4808-138-0x0000000074E30000-0x00000000753E1000-memory.dmp

        memory/4808-139-0x0000000074E30000-0x00000000753E1000-memory.dmp