General

  • Target

    Halkbank,pdf.exe

  • Size

    639KB

  • Sample

    241015-hzyceavhjm

  • MD5

    d91288a26f3bba21b1b1a0370ad76e53

  • SHA1

    4732007644e147cd49b9f04256be558859be3fba

  • SHA256

    3b233c5cc8b85a8020975ed736b93644fdae180f1d6f5190d91a3512e813ba8a

  • SHA512

    fe5e95d982e5b73c29010e97652b6bcc435b90a73659099519ab1d112354416ca9d32bded3ddc475bbb002ecd4e31372bb2388d224e71efe889ca7a599e62f89

  • SSDEEP

    12288:Pcir1S2IoOAc6/5rZGmy4c/uZno/+gwbFYgcPGcJUOO7aSMf5AzKcWBBcKN2O0CK:6/u9o2LFYZnO5qnbkKKk0

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5834796283:AAGrwY-Kkn2VgcNc7OCI3d_ssicyDA9JZcg/

Targets

    • Target

      Halkbank,pdf.exe

    • Size

      639KB

    • MD5

      d91288a26f3bba21b1b1a0370ad76e53

    • SHA1

      4732007644e147cd49b9f04256be558859be3fba

    • SHA256

      3b233c5cc8b85a8020975ed736b93644fdae180f1d6f5190d91a3512e813ba8a

    • SHA512

      fe5e95d982e5b73c29010e97652b6bcc435b90a73659099519ab1d112354416ca9d32bded3ddc475bbb002ecd4e31372bb2388d224e71efe889ca7a599e62f89

    • SSDEEP

      12288:Pcir1S2IoOAc6/5rZGmy4c/uZno/+gwbFYgcPGcJUOO7aSMf5AzKcWBBcKN2O0CK:6/u9o2LFYZnO5qnbkKKk0

    • AgentTesla

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

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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 Enterprise v15

Tasks