Analysis

  • max time kernel
    83s
  • max time network
    141s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    12/10/2021, 12:44

General

  • Target
    Proof of payment.jpg.scr
  • Size 608KB
  • Sample211012-pygrlacda9
  • SHA256 b4ac3be33fd7d731376ea3b504995b465122d8ef268e59e7ded5d433762cc932
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • netwire

C2
  • harold.ns01.info:3606

Attributes
  • activex_autorun

    false

  • activex_key

  • copy_executable

    false

  • delete_original

    false

  • host_id

    Netwir

  • install_path

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • mutex

    pHJVBoFH

  • offline_keylogger

    true

  • password

    master12

  • registry_autorun

    false

  • startup_name

  • use_mutex

    true

Signatures

  • NetWire RAT payload 3 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Suspicious use of SetThreadContext 1 IoCs
  • 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 WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Proof of payment.jpg.scr
    "C:\Users\Admin\AppData\Local\Temp\Proof of payment.jpg.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2384
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FYyPLomEXH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5CC2.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2116
    • C:\Users\Admin\AppData\Local\Temp\Proof of payment.jpg.scr
      "C:\Users\Admin\AppData\Local\Temp\Proof of payment.jpg.scr"
      2⤵
        PID:1592

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1592-117-0x0000000000400000-0x0000000000433000-memory.dmp

          memory/1592-119-0x0000000000400000-0x0000000000433000-memory.dmp

          memory/2384-115-0x0000000002960000-0x0000000002961000-memory.dmp