Overview

overview

10

Static

static

10

tmpkwlfqzbm.exe

windows10-ltsc_2021-x64

10

tmpkwlfqzbm.exe

windows10-2004-x64

10

tmpkwlfqzbm.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    tmpkwlfqzbm
  • Size 130KB
  • Sample260602-k4weqaaz2j
  • SHA256 b6badd77d0d32c295b8b9f66afef0437e4a6fdc9db5d8dff50a858b068f1d025
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
asyncratdefaultdefense_evasionexecutionpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 1.0.7

Botnet

  • Default

C2

  • ok99.jp.net:8848

  • ok99.jp.net:8080

  • ok99.jp.net:443

  • ok99.jp.net:80

  • app.ok99.jp.net:8848

  • app.ok99.jp.net:8080

  • app.ok99.jp.net:443

  • app.ok99.jp.net:80

  • www.ok99.jp.net:8848

  • www.ok99.jp.net:8080

  • www.ok99.jp.net:443

  • www.ok99.jp.net:80

Mutex

  • DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    chrome.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target
      tmpkwlfqzbm
    • Size 130KB
    • SHA256 b6badd77d0d32c295b8b9f66afef0437e4a6fdc9db5d8dff50a858b068f1d025
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defaultdefense_evasionexecutionasyncratpersistencerat

    • 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

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v16

Tasks