Analysis

  • max time kernel
    128s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/04/2025, 21:33

General

  • Target

    shellcode_loader.exe

  • Size

    1.7MB

  • MD5

    687926a220b92362d399eeb3b1333679

  • SHA1

    b3fdfc8e189e8ff048e9c0e75e3ffd6edeee4e5c

  • SHA256

    c9264df696e38c4bd9d22e25693455c497fe0f2ac0d1011963885866045d4cc9

  • SHA512

    51ddbc0c3c27172e05604c3fdb4a3a19752ad1bd98d00feacec470b591b298d755aacd7f2331ffa4bf6ad03c40269dc3a8d8464b5a49a8fcc70c62e5541c4db3

  • SSDEEP

    49152:5kabi8jANmd+h89LKGpsmDDxks6gVk64IU6iR:XDlPMiH+

Malware Config

Extracted

Family

asyncrat

Version

L838 RAT v1.0.0

Botnet

Default

Mutex

sfsafqagbiv

Attributes
  • delay

    1

  • install

    true

  • install_file

    Runtime Broker.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/rVJQPNVe

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • VenomRAT 1 IoCs

    Detects VenomRAT.

  • Venomrat family
  • Async RAT payload 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\shellcode_loader.exe
    "C:\Users\Admin\AppData\Local\Temp\shellcode_loader.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5328
    • C:\Windows\system32\cmd.exe
      "cmd" /c cls
      2⤵
        PID:5680

    Network

    MITRE ATT&CK Enterprise v16

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/5328-1-0x00000207C9F30000-0x00000207C9F43000-memory.dmp

      Filesize

      76KB