General

  • Target

    010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs

  • Size

    3.2MB

  • Sample

    240613-bcztdsyaqb

  • MD5

    3a3f7a4a8b7ea91bd05523cb83456441

  • SHA1

    20bbbe54a25cced1f74f34521918effd6aa5877d

  • SHA256

    010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1

  • SHA512

    c86b406a756a9f5ad7f1368e741687af94e12ee258fc42c99c9f14d6118ded6976a09e7d7fa1840d17c72d827a900760bf69dceb774798db1a3e86fa293ba0ed

  • SSDEEP

    6144:0BRlhwEEM38fLACxm31KtNnzZnZjIylZLImb:0zYuIN/flHb

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    bizr usjt guapiims

Extracted

Family

agenttesla

Credentials

Extracted

Family

wshrat

C2

http://chongmei33.publicvm.com:7045

Targets

    • Target

      010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs

    • Size

      3.2MB

    • MD5

      3a3f7a4a8b7ea91bd05523cb83456441

    • SHA1

      20bbbe54a25cced1f74f34521918effd6aa5877d

    • SHA256

      010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1

    • SHA512

      c86b406a756a9f5ad7f1368e741687af94e12ee258fc42c99c9f14d6118ded6976a09e7d7fa1840d17c72d827a900760bf69dceb774798db1a3e86fa293ba0ed

    • SSDEEP

      6144:0BRlhwEEM38fLACxm31KtNnzZnZjIylZLImb:0zYuIN/flHb

    • AgentTesla

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

    • WSHRAT

      WSHRAT is a variant of Houdini worm and has vbs and js variants.

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • 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.

MITRE ATT&CK Enterprise v15

Tasks