Extracted

• • Target

    ctrsys.exe

  • Size

    183KB

  • MD5

    3870e4591ce517d956771e23c361582d

  • SHA1

    28d09d35d3e5a8490ef4a4ebaa36262fa411afba

  • SHA256

    2c85d7c4dd069fff494edd19387d56e54a52f6ef1b557f3d775f999410eb5a4d

  • SHA512

    61dc0f9ca1a81170ef6aa4e514432079ebf12509eb615a191dae9f0e801d95748adf1cfd7d03dc5035dddd809458b0d42453b3fd51ca29cca3b8776a430de2d1

  • SSDEEP

    3072:8FuxfutjURbpYkH+wWtaiEGlIQZboLRG9ua/aHyvXgQd2md:8FEgjUXr7NGlVbAh

  Score

  10^/10

  lockbitcollectioncredential_accessdefense_evasiondiscoverypersistenceransomwarespywarestealer

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

    ransomwarelockbit

  • Rule to detect Lockbit 3.0 ransomware Windows payload

  • Credentials from Password Stores: Credentials from Web Browsers

    Malicious Access or copy of Web Browser Credential store.

    credential_accessstealer

  • Renames multiple (364) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware

  • Downloads MZ/PE file

  • Checks computer location settings

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE

  • Loads dropped DLL

  • Reads WinSCP keys stored on the system

    Tries to access WinSCP stored sessions.

    spywarestealer

  • Reads data files stored by FTP clients

    Tries to access configuration files associated with programs like FileZilla.

    spywarestealer

  • Reads user/profile data of local email clients

    Email clients store some user data on disk where infostealers will often target it.

    spywarestealer

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Unsecured Credentials: Credentials In Files

    Steal credentials from unsecured files.

    credential_accessstealer

  • Accesses Microsoft Outlook profiles

    collection

  • Adds Run key to start application

    persistence

  • Drops desktop.ini file(s)

  • Indicator Removal: File Deletion

    Adversaries may delete files left behind by the actions of their intrusion activity.

    defense_evasion

  • 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

  • Sets desktop wallpaper using registry

    ransomware

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  behavioral1behavioral2