Analysis

  • max time kernel
    270s
  • max time network
    266s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/06/2023, 14:56

General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample230605-sbce5shc35
  • SHA256 b17fb441c2af8dd5b20e49ffb9766bc737c9b6557db31beb3d9d18309dc87aec
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • Default

C2
  • 127.0.0.1:15491

  • 127.0.0.1:8080

  • 195.78.54.247:15491

  • 195.78.54.247:8080

  • 2.tcp.eu.ngrok.io:15491

  • 2.tcp.eu.ngrok.io:8080

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_file

    awdawd.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
    "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
    1⤵
      PID:4356
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1612

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1612-142-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-136-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-137-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-138-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-143-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-144-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-145-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-146-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-148-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/1612-147-0x0000020631750000-0x0000020631751000-memory.dmp

          memory/4356-134-0x0000000005860000-0x0000000005870000-memory.dmp

          memory/4356-135-0x0000000005860000-0x0000000005870000-memory.dmp

          memory/4356-133-0x0000000000DD0000-0x0000000000DE2000-memory.dmp