General

  • Target

    py.bat

  • Size

    1KB

  • Sample

    240911-b5drmawcmn

  • MD5

    52c26733c24f285a8e418dd75f176c8e

  • SHA1

    436bdabd8ebd0e726e133c11e7e35f809afd81bc

  • SHA256

    9e9c887fe78e658ae713cf4c85902c185399c49c89d219d0d57441f5c95a0863

  • SHA512

    2f13e169dc9eb6ed5769220432569adac68fdc6f02214b7e409845d0532de99c30acf2a42d04f5301223b0b70be04a37804619616eccf372af37311bc402e98d

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/sendDocument?chat_id=-1002245526003&caption=%F0%9F%93%82%20-%20Browser%20data%0A%E2%94%9C%E2%94%80%E2%94%80%20%F0%9F%93%82%20-%20cookies(0%20kb

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/sendMessage?chat_id=-1002245526003

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/getUpdates?offset=-

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/getFile?file_id=BQACAgEAAyEFAASF2AHzAAKurmbg93vRUZqTvG_NU2d65TPflKQEAALvAwACMUwIR3__LtOSv9FFNg

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/sendDocument?chat_id=-1002245526003&caption=%F0%9F%93%B8Screenshot%20take

Targets

    • Target

      py.bat

    • Size

      1KB

    • MD5

      52c26733c24f285a8e418dd75f176c8e

    • SHA1

      436bdabd8ebd0e726e133c11e7e35f809afd81bc

    • SHA256

      9e9c887fe78e658ae713cf4c85902c185399c49c89d219d0d57441f5c95a0863

    • SHA512

      2f13e169dc9eb6ed5769220432569adac68fdc6f02214b7e409845d0532de99c30acf2a42d04f5301223b0b70be04a37804619616eccf372af37311bc402e98d

    • Gurcu, WhiteSnake

      Gurcu is a malware stealer written in C#.

    • MilleniumRat

      MilleniumRat is a remote access trojan written in C#.

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Contacts a large (1075) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Downloads MZ/PE file

    • Stops running service(s)

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Loads dropped DLL

    • 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

    • Blocklisted process makes network request

    • Checks installed software on the system

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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks