General

  • Target

    vbc.exe.bin

  • Size

    677KB

  • Sample

    230501-y1dbmaad2w

  • MD5

    3050dad5399374e22b0f70c92c58be91

  • SHA1

    55deeefcb19f2584248deaa0c7a53fc8fbcb55d7

  • SHA256

    5988d11b83423cfd48d121732e165533443e8a5186bc83ff79659608c358559a

  • SHA512

    d7b3c9a600b4d58e70de26ac36b9bce61364045ef75a5fb61706c15e58fbd7e3002897ee69d625a051fc29dc35ecd82a268c7f8c45e2436575fc7c37fb693182

  • SSDEEP

    12288:y2TlEYAcN8pPgOJwCCvfXsJH3LzVkib6RzNOU5qNV+:NzGYOJwCCnXIWDhqNo

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      vbc.exe.bin

    • Size

      677KB

    • MD5

      3050dad5399374e22b0f70c92c58be91

    • SHA1

      55deeefcb19f2584248deaa0c7a53fc8fbcb55d7

    • SHA256

      5988d11b83423cfd48d121732e165533443e8a5186bc83ff79659608c358559a

    • SHA512

      d7b3c9a600b4d58e70de26ac36b9bce61364045ef75a5fb61706c15e58fbd7e3002897ee69d625a051fc29dc35ecd82a268c7f8c45e2436575fc7c37fb693182

    • SSDEEP

      12288:y2TlEYAcN8pPgOJwCCvfXsJH3LzVkib6RzNOU5qNV+:NzGYOJwCCnXIWDhqNo

    • AgentTesla

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

    • Detects Redline Stealer samples

      This rule detects the presence of Redline Stealer samples based on their unique strings.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • Checks computer location settings

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

    • 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.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks