General

  • Target

    main.exe

  • Size

    26.5MB

  • Sample

    240823-w59jhszbkb

  • MD5

    95ca985380b1aacfb458d2eb5f67528b

  • SHA1

    deec905cf18ff8f7be5879424e45eb36893ce215

  • SHA256

    559d428cfe6f18452f36e71a7c6dd52ec4c2507bec972321d432ed929bfc3e69

  • SHA512

    57c14b5cd9dc3c67dad46dabb93e54811bcb56e7a9370906405a2f2d91c8232d993b6fa8a194994c1d7742bc4989363e4ed546e50fd313114a3fa4ad1b42c9b3

  • SSDEEP

    393216:qUrTbCVFENlgdkQbaVxN2dAdpN7D9aGzonuT9rM227mIKDp+T:qUvRgdjtAdhKuT9A2mKN+

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/sendDocument?chat_id=-1002245526003&caption=%F0%9F%93%B8Screenshot%20take

Targets

    • Target

      main.exe

    • Size

      26.5MB

    • MD5

      95ca985380b1aacfb458d2eb5f67528b

    • SHA1

      deec905cf18ff8f7be5879424e45eb36893ce215

    • SHA256

      559d428cfe6f18452f36e71a7c6dd52ec4c2507bec972321d432ed929bfc3e69

    • SHA512

      57c14b5cd9dc3c67dad46dabb93e54811bcb56e7a9370906405a2f2d91c8232d993b6fa8a194994c1d7742bc4989363e4ed546e50fd313114a3fa4ad1b42c9b3

    • SSDEEP

      393216:qUrTbCVFENlgdkQbaVxN2dAdpN7D9aGzonuT9rM227mIKDp+T:qUvRgdjtAdhKuT9A2mKN+

    • 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

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

    • Stops running service(s)

    • Checks computer location settings

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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • 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.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks