Resubmissions

10-11-2024 20:59

241110-zs1ydsvgqh 10

10-11-2024 20:57

241110-zrswdsvjev 8

General

  • Target

    Amnesia.zip

  • Size

    67.8MB

  • Sample

    241110-zs1ydsvgqh

  • MD5

    2a99e1583751b410b455f6efa1c47c55

  • SHA1

    9bd995f7322c1acc6ba00b1960dfeb68ae17ae71

  • SHA256

    95e91194f77629c85910453738594c8650ba80de108da9a9938088418fd4b554

  • SHA512

    74aa63964424dc4cc046f5a4ac5ec1edc45dbeb81d3b7c9c3fc2849e2ffaba6c3ca33d4fd8272fad55d1cab83ff65b2b24533c573602db2ee89a2016f65ea985

  • SSDEEP

    1572864:mczcGb0mW1Gmp8xxygMkWkq1ev8LfAhq9/0ik:mczFTOGHxFC1evitZ0ik

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(0.25%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

      Amnesia.zip

    • Size

      67.8MB

    • MD5

      2a99e1583751b410b455f6efa1c47c55

    • SHA1

      9bd995f7322c1acc6ba00b1960dfeb68ae17ae71

    • SHA256

      95e91194f77629c85910453738594c8650ba80de108da9a9938088418fd4b554

    • SHA512

      74aa63964424dc4cc046f5a4ac5ec1edc45dbeb81d3b7c9c3fc2849e2ffaba6c3ca33d4fd8272fad55d1cab83ff65b2b24533c573602db2ee89a2016f65ea985

    • SSDEEP

      1572864:mczcGb0mW1Gmp8xxygMkWkq1ev8LfAhq9/0ik:mczFTOGHxFC1evitZ0ik

    • Gurcu family

    • Gurcu, WhiteSnake

      Gurcu is a malware stealer written in C#.

    • MilleniumRat

      MilleniumRat is a remote access trojan written in C#.

    • Milleniumrat family

    • 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

    • Contacts a large (2440) amount of remote hosts

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

    • 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 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.

    • 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

    • 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