General

  • Target

    40015adb59181ae2bc09e0f271373188.bin

  • Size

    1.9MB

  • Sample

    240517-cxzjssdd57

  • MD5

    7d90749097583e0592d513ed5943814a

  • SHA1

    871d6d9dc5d178e22c0f059572c601b82b6088b6

  • SHA256

    39a300059c0190fb239dc96ffa3160a318cf383fb0b792bd206cdc23c458033e

  • SHA512

    bf27272332e9f6320b72c84a7d79d79e70a09300240c8177cdb963e62992c4a22de3ab4770c63d91429072adb54f54f3eee903741d540254589b96286362df91

  • SSDEEP

    24576:aBdP8h5CgYn3sfAiMPyozBXoItSSABJ8oFVDL+CoUoXUCwqIaS5I3HWL4UggUow:ia5Cz8fwRz1oESQsKCokCw9aWL4UTw

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

April3rd2024

C2

94.156.65.181:3434

Mutex

A234sdgrgMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    66.29.151.236
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    s9jjoVvaZchS

Targets

    • Target

      4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe

    • Size

      4.7MB

    • MD5

      40015adb59181ae2bc09e0f271373188

    • SHA1

      f1690da2e26e5a7d31d3cce7b74a6185f60333f5

    • SHA256

      4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c

    • SHA512

      e5cbf81c29bb44dbee01474e15bef92211f70b57f91489ca963e0f91cab7077081453ee2d2f833e7002d96fd0bdd8a70af3263d4ec548f2af22e4a672a893145

    • SSDEEP

      24576:ULwV1goQrA9eYALPzgpICbdW/G/4ceP81kxr/wKXo4p/PGqA/v3MnU2ZRZhRVHTa:U0Vn

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • AsyncRat

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

    • Async RAT payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks