Analysis

  • max time kernel
    146s
  • max time network
    195s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    14/08/2021, 06:51

General

  • Target

    Payment Copy.js

  • Size

    736KB

  • MD5

    d3c5964e49a3af7aa3e861b7e9f194b1

  • SHA1

    afe5b5a7bc4353603b6959c3e556261896355ca1

  • SHA256

    328c830f50d6a124333a32e574411df789afd2581956098c08500c528034697f

  • SHA512

    dde692e8788543d570c394541362fe9d47d46749c7f97b9b95e6a9508db5bc4b591d4f2c31b25445b375067266b75662bce29e4c2638671da5bf54f960cb484d

Score
10/10

Malware Config

Extracted

Family

limerat

Wallets

1Cs8MjxkXtYwkDKypg8i1Vj5nzhANpgC6y

Attributes
  • aes_key

    2249

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/G9wX4J5m

  • delay

    8

  • download_payload

    false

  • install

    true

  • install_name

    player.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \

  • usb_spread

    false

Signatures

  • LimeRAT

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

  • Ratty

    Ratty is an open source Java Remote Access Tool.

  • Ratty Rat Payload 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • 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.

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Payment Copy.js"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\AsySxQTQmK.js"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1972
      • C:\Users\Admin\AppData\Roaming\New-Client.exe
        "C:\Users\Admin\AppData\Roaming\New-Client.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1716
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\player.exe'"
          4⤵
          • Creates scheduled task(s)
          PID:1308
        • C:\Users\Admin\AppData\Roaming\player.exe
          "C:\Users\Admin\AppData\Roaming\player.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:1456
    • C:\Program Files\Java\jre7\bin\javaw.exe
      "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\VrxxiCZBXd.jar"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1796
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1796 -s 140
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:612

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/612-73-0x0000000001C00000-0x0000000001C01000-memory.dmp

    Filesize

    4KB

  • memory/1456-81-0x00000000006C0000-0x00000000006C1000-memory.dmp

    Filesize

    4KB

  • memory/1668-59-0x000007FEFC301000-0x000007FEFC303000-memory.dmp

    Filesize

    8KB

  • memory/1716-72-0x0000000001FC0000-0x0000000001FC1000-memory.dmp

    Filesize

    4KB

  • memory/1716-69-0x00000000767B1000-0x00000000767B3000-memory.dmp

    Filesize

    8KB