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

  • MD5

    201a8b53a4749fd4f6f768aa3b003b04

  • SHA1

    c829d9e8030354c162d2ded4a1fe3f0b71f6c9e7

  • SHA256

    b17fb441c2af8dd5b20e49ffb9766bc737c9b6557db31beb3d9d18309dc87aec

  • SHA512

    e1346b63a5d57a72a410177ca1a52246dcb36be1a1da990a0d519a71781384e3c5712f4778674d219ee68421207f165286f003c9d3dd981678d85eb2336c5611

  • SSDEEP

    768:ju0OVTBRlc6nWUbmelmo2qjrKjGKG6PIyzjbFgX3iXavcTaPBDZjx:ju0OVTBnck26KYDy3bCXSK4Odjx

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            4KB

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

            Filesize

            64KB

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

            Filesize

            64KB

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

            Filesize

            72KB