General

  • Target

    4d67b942d28c806efd17da6040a4e5b21db90189148b6e25f2563562e394f945

  • Size

    1.2MB

  • Sample

    250112-bytjhasjaq

  • MD5

    d8070d83d46e6f6dc5cda2a5a29b38aa

  • SHA1

    16b1e52e9f0dcd5f79e9d0a4010d2c6fd24422ce

  • SHA256

    4d67b942d28c806efd17da6040a4e5b21db90189148b6e25f2563562e394f945

  • SHA512

    5ddac2be2b52259792ca71cb485f728c6df67c97e0463f55277169589e8e6f09873e4faf7b4c07738b28213d0b9ef0a303260020ad2775b96ce4469efaefe82c

  • SSDEEP

    24576:8GM1pa27Ml7zgIkxHc0IQv1RIAhjLoamMiX4lNmZg0YxegPbUIDPP:v27qIxHJIMjLoyEkmZ9Y14

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.huiijingco.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    lNLUrZT2

Targets

    • Target

      4d67b942d28c806efd17da6040a4e5b21db90189148b6e25f2563562e394f945

    • Size

      1.2MB

    • MD5

      d8070d83d46e6f6dc5cda2a5a29b38aa

    • SHA1

      16b1e52e9f0dcd5f79e9d0a4010d2c6fd24422ce

    • SHA256

      4d67b942d28c806efd17da6040a4e5b21db90189148b6e25f2563562e394f945

    • SHA512

      5ddac2be2b52259792ca71cb485f728c6df67c97e0463f55277169589e8e6f09873e4faf7b4c07738b28213d0b9ef0a303260020ad2775b96ce4469efaefe82c

    • SSDEEP

      24576:8GM1pa27Ml7zgIkxHc0IQv1RIAhjLoamMiX4lNmZg0YxegPbUIDPP:v27qIxHJIMjLoyEkmZ9Y14

    • AgentTesla

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

    • Agenttesla family

    • AgentTesla payload

    • Looks for VirtualBox Guest Additions in registry

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • 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.

    • Accesses Microsoft Outlook profiles

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks