General

  • Target

    WaveInstaller.exe

  • Size

    38.5MB

  • Sample

    240805-pdqh1azalh

  • MD5

    784c42bf21b133ff836288053af2eca3

  • SHA1

    5398de3434843cb5c085895ca9bc55badea13f83

  • SHA256

    4bd1e00aabf212349f0be0a8d0b12a18b954b2e35d50b7758f438addb6cd00ad

  • SHA512

    1448c45f55e4d0693afb2caf42bab1d349e68c38da62523e6566a643c4837812bd9d96a86a201e3746364f01704dd2fd69756f1d4c58dc267d827be0fde91906

  • SSDEEP

    786432:XivHdwocd0O/dI2hexeN5l5glkjQpb1KQveSttP2kbyMiyzEkxkIKN:XWD8noxEl+lkjQHfvdt8kbX1xkIK

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=BQACAgEAAyEFAASF2AHzAAKIZ2awwh8bITlW25XxomGmfPjldFJ5AAI8BwAC-auJRQ7yMjuuR458NQ

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

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

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

Targets

    • Target

      WaveInstaller.exe

    • Size

      38.5MB

    • MD5

      784c42bf21b133ff836288053af2eca3

    • SHA1

      5398de3434843cb5c085895ca9bc55badea13f83

    • SHA256

      4bd1e00aabf212349f0be0a8d0b12a18b954b2e35d50b7758f438addb6cd00ad

    • SHA512

      1448c45f55e4d0693afb2caf42bab1d349e68c38da62523e6566a643c4837812bd9d96a86a201e3746364f01704dd2fd69756f1d4c58dc267d827be0fde91906

    • SSDEEP

      786432:XivHdwocd0O/dI2hexeN5l5glkjQpb1KQveSttP2kbyMiyzEkxkIKN:XWD8noxEl+lkjQHfvdt8kbX1xkIK

    • 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 (2404) 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

      Using powershell.exe command.

    • 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

    • Target

      main.pyc

    • Size

      437B

    • MD5

      e3a83cc96bc468e8ed5e99b61ab1b08c

    • SHA1

      fc094fba9141e8ace98cce0309e1472b2471b631

    • SHA256

      893f6af6a7c380817dd8a1e5f63e72225b82c9775dc8ca40a449ed86c0427932

    • SHA512

      6d629486b39cef47bd2ce9b79ff792eebee83e4bdcbb30a756aabcbce75473a732ce2f3e89f0d200a4f9dc98765ce07538a9737cd428b2b372a6d36f4e78630d

    Score
    3/10

MITRE ATT&CK Enterprise v15

Tasks