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General

  • Target

    b9fa9fee75d0c5d2631a2f14e19adcb4

  • Size

    488KB

  • Sample

    240307-3v2t9aae9z

  • MD5

    b9fa9fee75d0c5d2631a2f14e19adcb4

  • SHA1

    e87b7192cd2e2aa4b67f4c1acaf2cab0a8346d21

  • SHA256

    153b42776cc381b3e5e8e7850458b76b94682a533de0dedfa20e36f59ea462f0

  • SHA512

    8001f93c3e0759d6f59c598f950cfb692f84ecbe67bfdc79882c8c76c93ccdaa9ca9940b85123dd5647e65d04de280c453d092b21da0853ede9f0c53f8469d23

  • SSDEEP

    12288:FZk/A/bfHSLuRwe3NBZwn51gJHI39wxbF:FZiA/rSL/4BZ8g

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.tehnolinks.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    wjmBPaC1

Targets

    • Target

      b9fa9fee75d0c5d2631a2f14e19adcb4

    • Size

      488KB

    • MD5

      b9fa9fee75d0c5d2631a2f14e19adcb4

    • SHA1

      e87b7192cd2e2aa4b67f4c1acaf2cab0a8346d21

    • SHA256

      153b42776cc381b3e5e8e7850458b76b94682a533de0dedfa20e36f59ea462f0

    • SHA512

      8001f93c3e0759d6f59c598f950cfb692f84ecbe67bfdc79882c8c76c93ccdaa9ca9940b85123dd5647e65d04de280c453d092b21da0853ede9f0c53f8469d23

    • SSDEEP

      12288:FZk/A/bfHSLuRwe3NBZwn51gJHI39wxbF:FZiA/rSL/4BZ8g

    • AgentTesla

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

    • AgentTesla payload

    • Looks for VirtualBox Guest Additions in registry

    • Drops file in Drivers directory

    • 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 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.

    • 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