General

  • Target

    asegurar.vbs

  • Size

    139KB

  • Sample

    241125-h122zs1lgl

  • MD5

    b6a19737eef49bc1fda3686ea04fefd2

  • SHA1

    e4f14e237fcd865694ce29862f58c063c0efe995

  • SHA256

    93db398a854042d2a23e61cd308a05d21fb85a6b5c28206c585a6221ac583cd6

  • SHA512

    03145176ca0d828034a4c6907213bcf6478a64134a9fd7a79026ea5ae250dc79d43da1d0cb005e18d0be4bb46373d36302f7369bfc5457be745ba3f50072e887

  • SSDEEP

    3072:boU4gHKIuQzOTbEeqZfCPgyoL4EairFgt5pJGwm:bLKAubqZTyo9

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

exe.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Tar22

C2

7014vj.duckdns.org:8000

Mutex

DcRatMutex_qwsafun

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      asegurar.vbs

    • Size

      139KB

    • MD5

      b6a19737eef49bc1fda3686ea04fefd2

    • SHA1

      e4f14e237fcd865694ce29862f58c063c0efe995

    • SHA256

      93db398a854042d2a23e61cd308a05d21fb85a6b5c28206c585a6221ac583cd6

    • SHA512

      03145176ca0d828034a4c6907213bcf6478a64134a9fd7a79026ea5ae250dc79d43da1d0cb005e18d0be4bb46373d36302f7369bfc5457be745ba3f50072e887

    • SSDEEP

      3072:boU4gHKIuQzOTbEeqZfCPgyoL4EairFgt5pJGwm:bLKAubqZTyo9

    • AsyncRat

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

    • Asyncrat family

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks