General

  • Target

    Infected.exe

  • Size

    63KB

  • Sample

    231129-nkzjtafh7t

  • MD5

    0d5f683e10eb28000597e3c3d2594741

  • SHA1

    a2fe5ca6ce2d9c3ff7fb733ee6a707c0dda17667

  • SHA256

    bf7a53c5db252212663303fd5492a75244b43beabbcc5a59b131ee46f8bbeb40

  • SHA512

    4d6341e43f3001c5ae6d38e7645d58f09849e6caf58f9879f52f1ec220bc0f306fab3d63c1c3f91b182f31b48d7d5f449654a32d103bc197102ea464e2525e56

  • SSDEEP

    768:Qv0M2UM/978aQC8A+XjlazcBRL5JTk1+T4KSBGHmDbD/ph0oXn9Nd9QeSu0dpqKX:b1/k/dSJYUbdh9nn/Su0dpqKmY7

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3232

127.0.0.1:13116

4.tcp.eu.ngrok.io:3232

4.tcp.eu.ngrok.io:13116

Mutex

弗吾9g吾吉ΔdgTXBG杰Η诶k7

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      Infected.exe

    • Size

      63KB

    • MD5

      0d5f683e10eb28000597e3c3d2594741

    • SHA1

      a2fe5ca6ce2d9c3ff7fb733ee6a707c0dda17667

    • SHA256

      bf7a53c5db252212663303fd5492a75244b43beabbcc5a59b131ee46f8bbeb40

    • SHA512

      4d6341e43f3001c5ae6d38e7645d58f09849e6caf58f9879f52f1ec220bc0f306fab3d63c1c3f91b182f31b48d7d5f449654a32d103bc197102ea464e2525e56

    • SSDEEP

      768:Qv0M2UM/978aQC8A+XjlazcBRL5JTk1+T4KSBGHmDbD/ph0oXn9Nd9QeSu0dpqKX:b1/k/dSJYUbdh9nn/Su0dpqKmY7

    • AsyncRat

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

    • Stealerium

      An open source info stealer written in C# first seen in May 2022.

    • Async RAT payload

    • Renames multiple (1263) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • 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