Overview

overview

10

Static

static

10

4fcf33dcf3...43.exe

windows10-2004-x64

10

4fcf33dcf3...43.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    4fcf33dcf35d293ea063a80024572b27953849a48a408c769bcc736eeb5c9543
  • Size 45KB
  • Sample260804-jrcamsff53
  • SHA256 4fcf33dcf35d293ea063a80024572b27953849a48a408c769bcc736eeb5c9543
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
asyncratdefaultcommand_and_controldefense_evasiondiscoveryexecutionpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • fimsexvietnam.com:80

  • fimsexvietnam.com:22

  • fimsexvietnam.com:8080

  • fimsexvietnam.com:8880

  • fimsexvietnam.com:2052

  • fimsexvietnam.com:2082

  • fimsexvietnam.com:2086

  • fimsexvietnam.com:2095

  • fimsexvietnam.com:443

  • fimsexvietnam.com:2053

  • fimsexvietnam.com:2083

  • fimsexvietnam.com:2087

  • fimsexvietnam.com:2096

  • fimsexvietnam.com:8443

  • www.fimsexvietnam.com:80

  • www.fimsexvietnam.com:22

  • www.fimsexvietnam.com:8080

  • www.fimsexvietnam.com:8880

  • www.fimsexvietnam.com:2052

  • www.fimsexvietnam.com:2082

Mutex

  • gyBvJEN4ljWV

Attributes
  • delay

    0

  • install

    true

  • install_file

    9t1qocx.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target
      4fcf33dcf35d293ea063a80024572b27953849a48a408c769bcc736eeb5c9543
    • Size 45KB
    • SHA256 4fcf33dcf35d293ea063a80024572b27953849a48a408c769bcc736eeb5c9543
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defaultdefense_evasiondiscoveryexecutionasyncratpersistenceratcommand_and_control

    • 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

    • Outbound SSH connection to public host

      SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

      command_and_control
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks