General

  • Target

    5bd009ecc08c72c1d670a8aeaf2b3c4263edb9293465f893dd3768ab3ea0ff24.rar

  • Size

    686KB

  • Sample

    240523-bxrzaagf8v

  • MD5

    cfb6de0d0013fc0a63b12664d69bcd16

  • SHA1

    26d7f8c03e5298bcd53b0552353c6d914bec894a

  • SHA256

    5bd009ecc08c72c1d670a8aeaf2b3c4263edb9293465f893dd3768ab3ea0ff24

  • SHA512

    559c881ce00477a8029816471c6381f7e0b65309248aff2a405e1e578133b4db05994842fa8048203d4c33753906aa4ddce2fb916a8f03b67b8b44e1d73ef859

  • SSDEEP

    12288:23e6XINpzkgmewejFWcw4rqYC6MIxUK/SjKpFdiafUcimTgDknNg2:g1XIN5kgmescdrqh6v+uYKNUcZgon+2

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.bonnyriggdentalsurgery.com.au
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Sages101*

Targets

    • Target

      Swift scan.exe

    • Size

      844KB

    • MD5

      2b09b0e829ae8e3baf44ea7597e9d83a

    • SHA1

      23e22129c79e41808ba77bf99a1bf8e77d8e5182

    • SHA256

      167a7a33c321ff9bf91a313c19edb14c195c34662c465560a868e6d2d8f214ad

    • SHA512

      82a3e5a413fd985ab0e868fba65312429a5686fa49f91d19ca670bf85988f3548205bd7b6ab69c6f0080555726a83bbc309b57917004c7bb7957f94235da9a4e

    • SSDEEP

      12288:SJx504bFtx504bFWxETdmtCJET9OziEECUBOwHOGnaOjiobasXd37G:gw4bjw4bnpRzMOQbTN7

    • AgentTesla

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

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • Detects executables referencing Windows vault credential objects. Observed in infostealers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables referencing many file transfer clients. Observed in information stealers

    • 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.

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks