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General

  • Target

    4667d2988c844cd2bfc3e983f1106c37cd196376a43d4fddcc278fab87ea8e0c.vbs

  • Size

    278KB

  • Sample

    240424-bqr1psde8t

  • MD5

    1afdbe303941cc8155f48c9b61bd3df4

  • SHA1

    d141b2f53f5679299bcd802791697bc831dd0a98

  • SHA256

    4667d2988c844cd2bfc3e983f1106c37cd196376a43d4fddcc278fab87ea8e0c

  • SHA512

    ac39f37a13dcb7dd6d41fc6a18f8b4cd190cfe9f5131e75c5ae29ea0b355ab1339138dde807df59080e68dd769590b7d43598f9532045568c6afa07dd70ed891

  • SSDEEP

    6144:LrdAYDLBLW+8A1ytW3xrbjsSFuHeEC57kdmXl45zaoGGqAP3MQ9scO4c8J1BFew9:/nS2ImPy2wrB

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      4667d2988c844cd2bfc3e983f1106c37cd196376a43d4fddcc278fab87ea8e0c.vbs

    • Size

      278KB

    • MD5

      1afdbe303941cc8155f48c9b61bd3df4

    • SHA1

      d141b2f53f5679299bcd802791697bc831dd0a98

    • SHA256

      4667d2988c844cd2bfc3e983f1106c37cd196376a43d4fddcc278fab87ea8e0c

    • SHA512

      ac39f37a13dcb7dd6d41fc6a18f8b4cd190cfe9f5131e75c5ae29ea0b355ab1339138dde807df59080e68dd769590b7d43598f9532045568c6afa07dd70ed891

    • SSDEEP

      6144:LrdAYDLBLW+8A1ytW3xrbjsSFuHeEC57kdmXl45zaoGGqAP3MQ9scO4c8J1BFew9:/nS2ImPy2wrB

    • 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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • 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