Overview

overview

10

Static

static

10

AsyncClient.exe

windows10-ltsc_2021-x64

10

Sharing

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General

  • Target
    AsyncClient.exe
  • Size 48KB
  • Sample260822-flmmms1dka
  • SHA256 302fe77cf8838c131bc0e0b5b3783cbaee0c81f23228bbe39c49a752babc6066
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
asyncratdefaultdefense_evasiondiscoveryexecutionpersistenceratspywarestealersuricata

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • 45.117.43.186:8080

Mutex

  • VsmJhSRZbHyX

Attributes
  • delay

    3

  • install

    true

  • install_file

    svhost.exe

  • install_folder

    %Temp%

aes.plain

Targets

    • Target
      AsyncClient.exe
    • Size 48KB
    • SHA256 302fe77cf8838c131bc0e0b5b3783cbaee0c81f23228bbe39c49a752babc6066
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defaultdefense_evasiondiscoveryexecutionasyncratpersistenceratspywarestealersuricata

    • Async RAT payload

      rat

    • Family: AsyncRat

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

      ratasyncrat

    • Suricata alert: AsyncRAT Malware Default X.509 Certificate Detected - Inbound

      Network activity triggered a Suricata alert

      suricataasyncrat

    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Drops desktop.ini file(s)

    behavioral1

MITRE ATT&CK Enterprise v16

Tasks