General

  • Target

    83858356d39e4457babbc4f7c370d60cfc7ef83d4c8899fba40936707984a811.vbs

  • Size

    15KB

  • Sample

    240604-bzzrxagg21

  • MD5

    ef953c3bb9f2a5c7ed0d80c40a711ba8

  • SHA1

    c3d43d067261b478ecccc60ebafec48d3d7ca7b8

  • SHA256

    83858356d39e4457babbc4f7c370d60cfc7ef83d4c8899fba40936707984a811

  • SHA512

    4dafcd4a076189c54f0e66f7e25fe2ae398fe0e2ae3782f3b1fa85d156135d870bb80a1230e24afd9f5437eedda0559019cb2003824f88ff3c58f8e82738ba3e

  • SSDEEP

    384:usuiqsg0DorIl8QlzSGTKDAhqSUVQixIGV/hqFyNPWSJ:u59j08iTlzvTiAtUVxxIGVx/

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      83858356d39e4457babbc4f7c370d60cfc7ef83d4c8899fba40936707984a811.vbs

    • Size

      15KB

    • MD5

      ef953c3bb9f2a5c7ed0d80c40a711ba8

    • SHA1

      c3d43d067261b478ecccc60ebafec48d3d7ca7b8

    • SHA256

      83858356d39e4457babbc4f7c370d60cfc7ef83d4c8899fba40936707984a811

    • SHA512

      4dafcd4a076189c54f0e66f7e25fe2ae398fe0e2ae3782f3b1fa85d156135d870bb80a1230e24afd9f5437eedda0559019cb2003824f88ff3c58f8e82738ba3e

    • SSDEEP

      384:usuiqsg0DorIl8QlzSGTKDAhqSUVQixIGV/hqFyNPWSJ:u59j08iTlzvTiAtUVxxIGVx/

    • 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 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

    • Checks computer location settings

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

    • 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 NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks