General

  • Target

    477f68c15edf37afedccfc3c535abd28d9b61b4a37fc925130948f32b173864f.vbs

  • Size

    24KB

  • Sample

    240519-bm9rcaag87

  • MD5

    24588c6c8f2c4df9be1ddcacd5ecccb6

  • SHA1

    e244912cd9f14ce2c4c3a770210dec3900497d7d

  • SHA256

    477f68c15edf37afedccfc3c535abd28d9b61b4a37fc925130948f32b173864f

  • SHA512

    222888e2ff2350e48e204760dab87ddaee8a937aa3ecfa94733de1f44a0c67ab3c382b2c2ce67d301ad657a6b7db2554a3e6a70a1314024072d70d9bdacb4481

  • SSDEEP

    384:GEP0KlhqHDn7sDsOsPaigF6cjV7y13MTxSiMFpWrd2Wxol4cgbiduG:GENhj/AaiVcjV7e3uSwzyl4P+duG

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      477f68c15edf37afedccfc3c535abd28d9b61b4a37fc925130948f32b173864f.vbs

    • Size

      24KB

    • MD5

      24588c6c8f2c4df9be1ddcacd5ecccb6

    • SHA1

      e244912cd9f14ce2c4c3a770210dec3900497d7d

    • SHA256

      477f68c15edf37afedccfc3c535abd28d9b61b4a37fc925130948f32b173864f

    • SHA512

      222888e2ff2350e48e204760dab87ddaee8a937aa3ecfa94733de1f44a0c67ab3c382b2c2ce67d301ad657a6b7db2554a3e6a70a1314024072d70d9bdacb4481

    • SSDEEP

      384:GEP0KlhqHDn7sDsOsPaigF6cjV7y13MTxSiMFpWrd2Wxol4cgbiduG:GENhj/AaiVcjV7e3uSwzyl4P+duG

    • 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 executables packed with SmartAssembly

    • 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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

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

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks