General

  • Target

    main.exe

  • Size

    38.3MB

  • Sample

    240816-dbzhcavgpm

  • MD5

    ee097363fd259cd976ecb09308f47453

  • SHA1

    59bcd1f2b660778b81c20c7a1040e7d898b75b39

  • SHA256

    3085188c97d30b95c51b3697fba461a4c36c0e8dbc4e2e40306e432db0aa1022

  • SHA512

    2f0749b777563d7ca2478376ce8742069cb82c9278cb5d387d4a75067caf708a448a2a753efc9a8d19ad337dcfb9d04779f950aaeb656a3f1b69d75655d0d839

  • SSDEEP

    786432:civHdwocd0O/dI2hexeN5l5glkjQpb1KQveSoy2qwDwnGeoKN:cWD8noxEl+lkjQHfvdJ2qwwJoK

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=BQACAgEAAyEFAASF2AHzAAKUw2a-vt7i0Une1x7fdLDEAad81lQQAAIiBAACfQn5Rfx1YSZLsLV5NQ

https://api.telegram.org/bot7457548429:AAGMvKYWjBbGXayEC5uoksRl1i2BIy7ylDg/sendMessage?chat_id=6024388590

https://api.telegram.org/bot7457548429:AAGMvKYWjBbGXayEC5uoksRl1i2BIy7ylDg/getUpdates?offset=-

Targets

    • Target

      main.exe

    • Size

      38.3MB

    • MD5

      ee097363fd259cd976ecb09308f47453

    • SHA1

      59bcd1f2b660778b81c20c7a1040e7d898b75b39

    • SHA256

      3085188c97d30b95c51b3697fba461a4c36c0e8dbc4e2e40306e432db0aa1022

    • SHA512

      2f0749b777563d7ca2478376ce8742069cb82c9278cb5d387d4a75067caf708a448a2a753efc9a8d19ad337dcfb9d04779f950aaeb656a3f1b69d75655d0d839

    • SSDEEP

      786432:civHdwocd0O/dI2hexeN5l5glkjQpb1KQveSoy2qwDwnGeoKN:cWD8noxEl+lkjQHfvdJ2qwwJoK

    • 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

    • Contacts a large (2423) amount of remote hosts

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

    • 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.

    • Downloads MZ/PE file

    • 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.

    • Clipboard Data

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

    • 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.

    • 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 NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks