Extracted

• • Target

    Build.exe

  • Size

    30.0MB

  • MD5

    690e59f01fc278dbdd46a6bd2afe39ec

  • SHA1

    b1b0efd3d42283c09b2b0f42b67e43e07c7b93b4

  • SHA256

    8415240f6011036fa923c46865da807643b74e16cb15f9c6f48f69bd25d3fe2a

  • SHA512

    fd7a8f63299a24ff0fa493f6053f7dd9a2beae3b04779f876d884e2f882faddf27e529580c38cb439573c9eee376fc20ad7fb8fa2b8c498dbb4500c0e91683ec

  • SSDEEP

    786432:YvIFT5OUiF6YF2EiWeIGSg6A3kaa768gMSKr9dzPkw:YvET5ViF642LWeIGDMS8Tz7

  Score

  10^/10

  discoverypyinstallerupxgurcumilleniumratcollectioncredential_accessdefense_evasionevasionexecutionpersistenceprivilege_escalationratspywarestealer

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

    stealergurcu

  • MilleniumRat

    MilleniumRat is a remote access trojan written in C#.

    ratstealermilleniumrat

  • Modifies WinLogon for persistence

    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 (2559) amount of remote hosts

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

    discovery

  • Credentials from Password Stores: Credentials from Web Browsers

    Malicious Access or copy of Web Browser Credential store.

    credential_accessstealer

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Downloads MZ/PE file

  • Stops running service(s)

    evasionexecution

  • 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.

    collection

  • Executes dropped EXE

  • Indicator Removal: Clear Windows Event Logs

    Clear Windows Event Logs to hide the activity of an intrusion.

    defense_evasion

  • Loads dropped DLL

  • Reads user/profile data of web browsers

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

    spywarestealer

  • UPX packed file

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

    upx

  • Unsecured Credentials: Credentials In Files

    Steal credentials from unsecured files.

    credential_accessstealer

  • Accesses cryptocurrency files/wallets, possible credential harvesting

    spyware

  • Adds Run key to start application

    persistence

  • 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.

    defense_evasion

  • Drops file in System32 directory

  • Enumerates processes with tasklist

    discovery

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  • Suspicious use of SetThreadContext

  behavioral1behavioral2