Extracted

• • Target

    Bootstrapper.exe

  • Size

    19.0MB

  • MD5

    4581b2e238f1dad629dc72c168b2be8e

  • SHA1

    74dce1860065aad35cb68115545bdf862bddb775

  • SHA256

    233f9f88c16fb185eb91f4afc116b808eb8fa5fd0cf1b3d3a92ec6732c56314b

  • SHA512

    dcea04ffffdf35107a0cd6998eaef3f91270985c80028c206f59ae7d9b193defb3089826a7d1118391f849618904fdf7e77621348531b711d2eac89f422d132a

  • SSDEEP

    24576:tigOpgzfDfMSCWk6/SCOqZkHIyGigOpgzfDfMSCWk6/SCOqZkHIy:dB5CW9/SCzhycB5CW9/SCzhy

  Score

  10^/10

  njrathackeddefense_evasiondiscoveryevasionpersistenceprivilege_escalationthemidatrojan

  • Njrat family

    njrat

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat

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

    evasion

  • Downloads MZ/PE file

  • Event Triggered Execution: Image File Execution Options Injection

    persistence

  • Modifies Windows Firewall

    evasion

  • 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.

  • Drops startup file

  • 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

  • Themida packer

    Detects Themida, an advanced Windows software protection system.

    themida

  • 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

  • Legitimate hosting services abused for malware hosting/C2

  • Network Share Discovery

    Attempt to gather information on host network.

    discovery

  • Obfuscated Files or Information: Command Obfuscation

    Adversaries may obfuscate content during command execution to impede detection.

    defense_evasion

  • Checks system information in the registry

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

  • Drops autorun.inf file

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  behavioral1