Analysis

  • max time kernel
    104s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250410-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/04/2025, 00:14

General

  • Target

    shellcode_loader.exe

  • Size

    1.7MB

  • MD5

    7738fc1c644e75954d87e59f607c1dc1

  • SHA1

    88797699e2449c749c3cf47b445e1802de3f0d0d

  • SHA256

    aa25b09c0498daa80de2a413073b2e12c4dd5da6da775d67ca34622349d91eff

  • SHA512

    08b8fdc3c181c7b76ec3b88dc04b7a8f2e73672ceb50743339558259a0a302b9b59704d5828a9f31b6505c5cdfbfcc93dc12a7944e8330ff8f1cafb38dd1ac06

  • SSDEEP

    49152:4JbX0Bj7/5I+plh3dfd3hgkc+bVhdk4IU6ia:oG59eH+

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:4280
    • C:\Windows\system32\cmd.exe
      "cmd" /c cls
      2⤵
        PID:4324

    Network

    MITRE ATT&CK Enterprise v16

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4280-1-0x000001C007350000-0x000001C007463000-memory.dmp

      Filesize

      1.1MB