Extracted

• • Target

    https://samples.vx-underground.org/Samples/VirusSign%20Collection/2024.01/VirusSign.2024.01.23.7z

  Score

  10^/10

  bdaejecbackdoordiscoveryevasionexecutionpersistenceprivilege_escalationpyinstallerransomwarespywarestealerthemidatrojanupxvmprotect

  • Adds autorun key to be loaded by Explorer.exe on startup

    persistence

  • Bdaejec

    Bdaejec is a backdoor written in C++.

    backdoorbdaejec

  • Bdaejec family

    bdaejec

  • Detects Bdaejec Backdoor.

    Bdaejec is backdoor written in C++.

  • Modifies firewall policy service

    evasion

  • Modifies visiblity of hidden/system files in Explorer

    evasion

  • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    evasion

  • Renames multiple (63) files with added filename extension

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

    ransomware

  • Creates new service(s)

    persistenceexecution

  • Downloads MZ/PE file

  • Event Triggered Execution: AppInit DLLs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

    persistenceprivilege_escalation

  • Manipulates Digital Signatures

    Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.

  • Modifies Windows Firewall

    evasion

  • Stops running service(s)

    evasionexecution

  • Checks BIOS information in registry

    BIOS information is often read in order to detect sandboxing environments.

  • 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.

    persistenceprivilege_escalation

  • Executes dropped EXE

  • Loads dropped DLL

  • Modifies file permissions

    discovery

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Themida packer

    Detects Themida, an advanced Windows software protection system.

    themida

  • VMProtect packed file

    Detects executables packed with VMProtect commercial packer.

    vmprotect

  • Adds Run key to start application

    persistence

  • Checks installed software on the system

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery

  • Checks whether UAC is enabled

    evasiontrojan

  • Enumerates connected drives

    Attempts to read the root path of hard drives other than the default C: drive.

  • Network Share Discovery

    Attempt to gather information on host network.

    discovery

  • Drops file in System32 directory

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  • Suspicious use of SetThreadContext

  • UPX packed file

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

    upx
  behavioral1