Resubmissions

10-08-2024 12:23

240810-pkhrqstbnc 9

10-08-2024 12:20

240810-phxg4stare 3

10-08-2024 12:16

240810-pfqlsayerj 3

General

  • Target

    BootstrapperV1.15.exe

  • Size

    796KB

  • Sample

    240810-pkhrqstbnc

  • MD5

    653c07b9b5f1b22c84f72c03b0083d18

  • SHA1

    54c25b876736011d016dc0ea06a1533365555cc4

  • SHA256

    c9d04a3a87fee318ba65f837f40bd2dd2428f25e78bf271207f8b2b02aaa8a06

  • SHA512

    b605773fc4fa244f354bb8f51621225e6482751d19bddf747f03f624581bc7ae896ca0e40be91b667aea7a7978a291497a362f9bd65449682e1948938af684f8

  • SSDEEP

    12288:wuHbakEAdS7SdsgtNaFoGQ4jEr+xpS1nmkFmZ2ojKU:/HbTHSINooGQ4jESxpS1nmkkK

Malware Config

Targets

    • Target

      BootstrapperV1.15.exe

    • Size

      796KB

    • MD5

      653c07b9b5f1b22c84f72c03b0083d18

    • SHA1

      54c25b876736011d016dc0ea06a1533365555cc4

    • SHA256

      c9d04a3a87fee318ba65f837f40bd2dd2428f25e78bf271207f8b2b02aaa8a06

    • SHA512

      b605773fc4fa244f354bb8f51621225e6482751d19bddf747f03f624581bc7ae896ca0e40be91b667aea7a7978a291497a362f9bd65449682e1948938af684f8

    • SSDEEP

      12288:wuHbakEAdS7SdsgtNaFoGQ4jEr+xpS1nmkFmZ2ojKU:/HbTHSINooGQ4jESxpS1nmkkK

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

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Event Triggered Execution: Image File Execution Options Injection

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Blocklisted process makes network request

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Enumerates connected drives

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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Legitimate hosting services abused for malware hosting/C2

    • Network Share Discovery

      Attempt to gather information on host network.

    • Checks system information in the registry

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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks