General

  • Target

    2f4751772925ed46b5a66bb9fdd4d5d061b8d062f6f664f38b69070c171878ff

  • Size

    1.8MB

  • Sample

    250114-b43dlasre1

  • MD5

    99a7c93892a5ec6e10742e1832e720e4

  • SHA1

    381eb392b5022c8d44f2fecc85459ebe832bd466

  • SHA256

    2f4751772925ed46b5a66bb9fdd4d5d061b8d062f6f664f38b69070c171878ff

  • SHA512

    938b216a629c5b52ae0befc64fb6cbaf30b2bc70b6f0a1b2844311300955f146e55ea9e9bb32b71cb3e8b9118ae75c55851ecaf3e4c81807028a65d2d4bd7f88

  • SSDEEP

    49152:fufdsXNUlyw0EYJhMIO3Fu859l/DrjLoyEkmZ9Y14:fb9Uww0ECqYul/EA

Malware Config

Extracted

Family

agenttesla

Credentials

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

Targets

    • Target

      2f4751772925ed46b5a66bb9fdd4d5d061b8d062f6f664f38b69070c171878ff

    • Size

      1.8MB

    • MD5

      99a7c93892a5ec6e10742e1832e720e4

    • SHA1

      381eb392b5022c8d44f2fecc85459ebe832bd466

    • SHA256

      2f4751772925ed46b5a66bb9fdd4d5d061b8d062f6f664f38b69070c171878ff

    • SHA512

      938b216a629c5b52ae0befc64fb6cbaf30b2bc70b6f0a1b2844311300955f146e55ea9e9bb32b71cb3e8b9118ae75c55851ecaf3e4c81807028a65d2d4bd7f88

    • SSDEEP

      49152:fufdsXNUlyw0EYJhMIO3Fu859l/DrjLoyEkmZ9Y14:fb9Uww0ECqYul/EA

    • 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