General

  • Target
    Bestar Steel RFQ 0100423(MECH)NBI April-1423.exe
  • Size 743KB
  • Sample230418-mtds2aah54
  • SHA256 856c8bb75c2b8c79b99f9249c201d20838251a94a4f830afa7995a3af0952842
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot5409839916:AAEYUYZy0IhJQAm4VXi620si4okGW8FDL2w/

Targets

    • Target
      Bestar Steel RFQ 0100423(MECH)NBI April-1423.exe
    • Size 743KB
    • SHA256 856c8bb75c2b8c79b99f9249c201d20838251a94a4f830afa7995a3af0952842
    • MD5 SHA1 SHA512 SSDEEP
    • AgentTesla

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

    • Looks for VirtualBox Guest Additions in registry

    • 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 v6

Tasks