General

  • Target

    ac54c568fc2bfe2851a49e58150286a42a37d4d2ce782e73d163f2ec60e646ed.gz

  • Size

    692KB

  • Sample

    240522-ckbbfahb5x

  • MD5

    e20d2e805d85b04e540c0dda744564b5

  • SHA1

    fa44807b7eb6c4bae650244a9962bcf4eeb841aa

  • SHA256

    ac54c568fc2bfe2851a49e58150286a42a37d4d2ce782e73d163f2ec60e646ed

  • SHA512

    30addd3ec50ee5cdb2b741428b3a350831eea91424bd4a31ee41818531d213250ecd72d55f2c7dea71a31bd2b8c393a0a9b43a3db9c3aa7a390f072b6eedd425

  • SSDEEP

    12288:nKE5+TG4BS5cveVUVjftMitqexd7oUepaXpp2sDHBusvmEqYZfTL7:nKECBS5YOAtq5aKsDxvmEqYZ/

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.deblokhoeve.be
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Blokhoeve2490.i

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      Shipping documents & bill of Lading_PDF.exe

    • Size

      768KB

    • MD5

      aa2e0331db7bdc7c4a51a4d9ca2f4832

    • SHA1

      fc6ee67838401e8cbcef4e2c547d06cb56f12628

    • SHA256

      f0e352c3fbf73706c4c0fd2e118cf10b241dd880b58ceb67491b585fa5719fad

    • SHA512

      42c7e114bd9fa67301724481c893bfaa95ec633b53328d157b95e26fe6c4ca29e29cbda5ac0bcc73577865d18d4c3875fc2c08f6747f4ec926868e41c20957c3

    • SSDEEP

      12288:+IeWET/mr9K+22BEEzFatnhghS5+v+DUVNf5MWl0axTbo+i1Cv7z2CjH8mri7jY3:OWtb3BEMhS5qOk5SVC+CjcmWg

    • 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 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Tasks