General

  • Target

    Builder.exe

  • Size

    7.1MB

  • Sample

    240802-kmj1csybnb

  • MD5

    479c20170f53c96f24c77610b86fa352

  • SHA1

    99c1c05a229e9b2e6f812f0fa7db4ac78c9cae1e

  • SHA256

    df814ecf5dd2f631b9b728148c00ba2973b6efbb06364c5a4f0883ddad2549ea

  • SHA512

    1c6a7e336f64283dfd2ebb3c259f84bd87f32d7d70d8783e11b45878677c3e95b45c9e7f73ae2c77d3860f95bf6cb85bf85e4fe3ca1d311f9cf153d642f27d61

  • SSDEEP

    196608:Zmx49UBA1HeT39Iig/f1ncKOVVtk7HdGtQbNPUQ:0aT1+TtIio0VQ9G6r

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot6758433214:AAHsOKdFy4qDz6vRHO6UQUpRG85G-wZvC1Y/sendMessage?chat_id=6234857847

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      Builder.exe

    • Size

      7.1MB

    • MD5

      479c20170f53c96f24c77610b86fa352

    • SHA1

      99c1c05a229e9b2e6f812f0fa7db4ac78c9cae1e

    • SHA256

      df814ecf5dd2f631b9b728148c00ba2973b6efbb06364c5a4f0883ddad2549ea

    • SHA512

      1c6a7e336f64283dfd2ebb3c259f84bd87f32d7d70d8783e11b45878677c3e95b45c9e7f73ae2c77d3860f95bf6cb85bf85e4fe3ca1d311f9cf153d642f27d61

    • SSDEEP

      196608:Zmx49UBA1HeT39Iig/f1ncKOVVtk7HdGtQbNPUQ:0aT1+TtIio0VQ9G6r

    • AsyncRat

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

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Async RAT payload

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Looks up geolocation information via web service

      Uses a legitimate geolocation service to find the infected system's geolocation info.

MITRE ATT&CK Enterprise v15

Tasks