General

  • Target

    ab3f0c321894430eed1ba65eca338a0471e18ba82cdd554084ed63f36ff91dce.exe

  • Size

    2.3MB

  • Sample

    240507-b1e4wsce7s

  • MD5

    b5b77f0c912f438cbc5142c42818fa29

  • SHA1

    94b5df605f00d34581435e3ca10b47094e31c0ab

  • SHA256

    ab3f0c321894430eed1ba65eca338a0471e18ba82cdd554084ed63f36ff91dce

  • SHA512

    87a1fbb1b8187377997b219bf6b286102648ff913ab0d73c78c67bee443702e9824bc14e980a2d38e5ece9a1fccc6e134f5dfa6f2b9bd9604ccb0d140418424f

  • SSDEEP

    49152:j1ZU7LqS9SUqiRCQqzDzKbQJRdUbXK2cBcDdPO++9vvGT1nkYE:joHqS9S1kVqzDzvRdLlCBPONvGZkL

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1263338506:AAEo1afaqZcanZqwKGJF2HA7xr6YOHyXHtU/

Targets

    • Target

      ab3f0c321894430eed1ba65eca338a0471e18ba82cdd554084ed63f36ff91dce.exe

    • Size

      2.3MB

    • MD5

      b5b77f0c912f438cbc5142c42818fa29

    • SHA1

      94b5df605f00d34581435e3ca10b47094e31c0ab

    • SHA256

      ab3f0c321894430eed1ba65eca338a0471e18ba82cdd554084ed63f36ff91dce

    • SHA512

      87a1fbb1b8187377997b219bf6b286102648ff913ab0d73c78c67bee443702e9824bc14e980a2d38e5ece9a1fccc6e134f5dfa6f2b9bd9604ccb0d140418424f

    • SSDEEP

      49152:j1ZU7LqS9SUqiRCQqzDzKbQJRdUbXK2cBcDdPO++9vvGT1nkYE:joHqS9S1kVqzDzvRdLlCBPONvGZkL

    • AgentTesla

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

    • Detect ZGRat V1

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Detect packed .NET executables. Mostly AgentTeslaV4.

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

    • 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 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