General

  • Target

    b2183760768b6dffb3c3f4c28510c6e32cae125d46f5d4e046bbdfd860d46b26.exe

  • Size

    755KB

  • Sample

    240612-cfp9ssycqc

  • MD5

    69eb8a758814ce93b09578f47aba4c19

  • SHA1

    66850a40b2b77f8f89f8882a5f8aecc87110945e

  • SHA256

    b2183760768b6dffb3c3f4c28510c6e32cae125d46f5d4e046bbdfd860d46b26

  • SHA512

    df1d61ea9f993b311949e7cef7137c52fe367c75fe6bfa1a6c524376c5894f3c8f94b687814a769a44e83e626556bcf4b8b12f5d72b7924e220012d332eaaeae

  • SSDEEP

    12288:4bKDA7hW9s72Rw4iJQPxUCbwlM5cd39KKcZuoni5Y2rKDEbnv77PACR5leZlN2b:4bPWO7D4iJq0lM5EQzjngLHDDA+erob

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      b2183760768b6dffb3c3f4c28510c6e32cae125d46f5d4e046bbdfd860d46b26.exe

    • Size

      755KB

    • MD5

      69eb8a758814ce93b09578f47aba4c19

    • SHA1

      66850a40b2b77f8f89f8882a5f8aecc87110945e

    • SHA256

      b2183760768b6dffb3c3f4c28510c6e32cae125d46f5d4e046bbdfd860d46b26

    • SHA512

      df1d61ea9f993b311949e7cef7137c52fe367c75fe6bfa1a6c524376c5894f3c8f94b687814a769a44e83e626556bcf4b8b12f5d72b7924e220012d332eaaeae

    • SSDEEP

      12288:4bKDA7hW9s72Rw4iJQPxUCbwlM5cd39KKcZuoni5Y2rKDEbnv77PACR5leZlN2b:4bPWO7D4iJq0lM5EQzjngLHDDA+erob

    • AgentTesla

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

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • Detects executables referencing Windows vault credential objects. Observed in infostealers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables referencing many file transfer clients. Observed in information stealers

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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.

    • 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