General

  • Target
    4409RI100080 SWIFTMSG.TXT.exe
  • Size 458KB
  • Sample211202-nqkb3sfecl
  • SHA256 f07fc5f31e955fb3c7fc9d9c5a7eff013b987916aa18c60c1b3ff80db344c9ab
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot1338829993:AAGkgJ80sLaIYwBfp79Ps5EtdSP1XH6jBV8/sendDocument

Targets

    • Target
      4409RI100080 SWIFTMSG.TXT.exe
    • Size 458KB
    • SHA256 f07fc5f31e955fb3c7fc9d9c5a7eff013b987916aa18c60c1b3ff80db344c9ab
    • MD5 SHA1 SHA512
    • AgentTesla

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

    • AgentTesla Payload

    • 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.

    • 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

    • Adds Run key to start application

    • 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