Overview

overview

10

Static

static

10

AsyncClient.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample260730-n58m8aha37
  • SHA256 d9fc8e9f786f16904bcf4e33a1477a96e1bb5527d96faed4f0bc2506d9e5287f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
asyncratdefaultdefense_evasiondiscoveryexecutionpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • 5.tcp.eu.ngrok.io:4444

  • 5.tcp.eu.ngrok.io:11798

  • 5.tcp.eu.ngrok.io:17258

  • 5.tcp.eu.ngrok.io:1615

  • krhfezq1.free.pwrp.cc:4444

  • krhfezq1.free.pwrp.cc:11798

  • krhfezq1.free.pwrp.cc:17258

  • krhfezq1.free.pwrp.cc:1615

  • e841hdcf.free.pwrp.cc:4444

  • e841hdcf.free.pwrp.cc:11798

  • e841hdcf.free.pwrp.cc:17258

  • e841hdcf.free.pwrp.cc:1615

Mutex

  • Q3GR5vOCOtvs

Attributes
  • delay

    3

  • install

    true

  • install_file

    Async.exe

  • install_folder

    %AppData%

  • local_host

    127.0.0.1

aes.plain

Targets

    • Target
      AsyncClient.exe
    • Size 45KB
    • SHA256 d9fc8e9f786f16904bcf4e33a1477a96e1bb5527d96faed4f0bc2506d9e5287f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

    • Async RAT payload

      rat

    • Family: AsyncRat

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

      ratasyncrat

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    behavioral1

MITRE ATT&CK Enterprise v16

Tasks