General

  • Target

    59fd27d8adb9e3fc23056a28a4e66544d6e4105144c8c977f4e1c16d4e0f519e.xz

  • Size

    600KB

  • Sample

    240911-h9azvsyeln

  • MD5

    991cde2cdc441e3ebe046dd0ac1fadbb

  • SHA1

    a1eb9e97006c32ca3ba157fb3a79fdf7d9a01a09

  • SHA256

    59fd27d8adb9e3fc23056a28a4e66544d6e4105144c8c977f4e1c16d4e0f519e

  • SHA512

    1dc8efe3836bded4aea2dd5fb1e3ab0efc8c743b898bb2696d6fd53a7cc3bdc13e002972eb931531ec884e533412aa335de6d677ef3723c7e1ec6cd03e7a9f25

  • SSDEEP

    12288:Df/Gu60D4NRTzz1o8EODTlDReX0Qs0+Ax5oKchkfr5B4WEqrsw8y:DM0izz84AXfT+gWhAtBhj8y

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.apexrnun.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    %qroUozO;(C2Rlyb

Targets

    • Target

      rQUu2eHuvuSOA1L.exe

    • Size

      652KB

    • MD5

      999c2c940d0c49ab173cd107e6d5323c

    • SHA1

      8e14d16e2a7ca0e253203fbb9c44814d7ed6b3f4

    • SHA256

      3b318399e094b9024f2b6c8d92eff595a636b147b4bf240752e92a6bcd7b7fd8

    • SHA512

      5b3d480b1569a8780098cfe80a9ae3fda010d601979ed0973d1e86a1ee34003eedd21d5d1fe8c98fdba059da7ae7c6bd20f3c6cdbb309a2fc3c9e7d094e85d4d

    • SSDEEP

      12288:+SaxzV17d704jDHWOkAJbH4aQDbRE8hUrHmAxOqZysQpryO0Nsy9i72l:KzV1R7RH9kAZARUjSz3yOysykE

    • AgentTesla

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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.

    • 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 SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks