General

  • Target

    0dfee48d6f0ab22d94eb3e2f045f543e8f9554169730533128425714527fe441

  • Size

    4.6MB

  • Sample

    241026-bkb3asvlak

  • MD5

    418d3422db5ec4b85b95647cf1dca1ee

  • SHA1

    fbc3e8cf62c5de0f319a81bb03fbd397487285cf

  • SHA256

    0dfee48d6f0ab22d94eb3e2f045f543e8f9554169730533128425714527fe441

  • SHA512

    678397b004c96113991f733f35a174d76847aae66e846b1e8d8f00d4318814cbbddc7e535c627adb27d028c595aefa753d8c2747bc0621ee1c35ff0051d0526c

  • SSDEEP

    98304:JrtNtkXBS3lfftb2/Jgk+5KwWELBGh+p257hHIsLtvn/4dmDrs4x:lrtk03hfkJgk+5ME9U3XoCtvnEyP

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7390139954:AAFw-89dzufZnN9iQ-qMJ7xuGsXRrzvXAEI/

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7390139954:AAFw-89dzufZnN9iQ-qMJ7xuGsXRrzvXAEI/sendDocumen

Targets

    • Target

      0dfee48d6f0ab22d94eb3e2f045f543e8f9554169730533128425714527fe441

    • Size

      4.6MB

    • MD5

      418d3422db5ec4b85b95647cf1dca1ee

    • SHA1

      fbc3e8cf62c5de0f319a81bb03fbd397487285cf

    • SHA256

      0dfee48d6f0ab22d94eb3e2f045f543e8f9554169730533128425714527fe441

    • SHA512

      678397b004c96113991f733f35a174d76847aae66e846b1e8d8f00d4318814cbbddc7e535c627adb27d028c595aefa753d8c2747bc0621ee1c35ff0051d0526c

    • SSDEEP

      98304:JrtNtkXBS3lfftb2/Jgk+5KwWELBGh+p257hHIsLtvn/4dmDrs4x:lrtk03hfkJgk+5ME9U3XoCtvnEyP

    • AgentTesla

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

    • Agenttesla family

    • Gurcu family

    • Gurcu, WhiteSnake

      Gurcu is a malware stealer written in C#.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • Redline family

    • SectopRAT

      SectopRAT is a remote access trojan first seen in November 2019.

    • SectopRAT payload

    • Sectoprat family

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • 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 NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks