General

  • Target

    7587ba81d8c7dc2ffd4c55ad28fb018ef9e2728d20d65502c9dea4c4300b873e

  • Size

    599KB

  • Sample

    250108-bf6fcayqhm

  • MD5

    a9de493236e35181c7ccda00694008f9

  • SHA1

    2c593b9b1e8133c2f3fc08cf4cc73c2fe6e7cfc4

  • SHA256

    7587ba81d8c7dc2ffd4c55ad28fb018ef9e2728d20d65502c9dea4c4300b873e

  • SHA512

    6f0003bfe38fc10ff6c0c432f105a11acbf7d1ef12116548e03dccc60fe0bd51db32dc1dc693908b25603c3962c67f901ff1a31ceb0022400a3435d483d9caa2

  • SSDEEP

    12288:7D0dxci9mcSHcV9VrmSRjIyiwPh7wIpuCplq3fhz5y3kz7ZYxClGG:fwxvmcSHcbtlawPh7wI4PJ4Uz9zlN

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5145135161:AAFnBnjYGtIUE_EwGqQ3-YIV1FOEItrzy8c/

Targets

    • Target

      proforma invoice pdf.exe

    • Size

      858KB

    • MD5

      b67477603738159b912b0aa9c197897f

    • SHA1

      51a14b917e8393a3c1ded172bb04c494fdd727e3

    • SHA256

      67cc97b2f5e9d35039589c92c7f6fda7831af0f259ddf248fb166664e4027b91

    • SHA512

      685fe67b8a5d565ccdaf793a7a25dcd84789ac62e8f747800268a547af2771cfa7b11e758a7255e5d57117fd8151364d296b52aed4ad4d96c5752cd6b0164cc4

    • SSDEEP

      12288:vTEAWYMV+I4MVKWLFRLvHG0YV0k6LbRbMhG8FjrPqre71+8cYLsm2F9QykR:LhGRgYXYak6LbRR8F3inBYsm2LQB

    • AgentTesla

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

    • Agenttesla family

    • 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

    • 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 Enterprise v15

Tasks