Resubmissions

19/06/2024, 16:13

240619-tpb7zatbkh8

19/06/2024, 16:12

240619-tnrw2axhjk4

19/06/2024, 16:11

240619-tm7absxgrk7

19/06/2024, 16:03

240619-thgh4stane9

19/06/2024, 16:01

240619-tglrfaxglm8

19/06/2024, 15:55

240619-tc2l4axgjj8

19/06/2024, 15:53

240619-tb5blaxfqr10

19/06/2024, 15:52

240619-tbc74sshqc7

General

  • Target
    Bloxstrap-v2.5.4 (3).exe
  • Size 7.6MB
  • Sample240619-thgh4stane
  • SHA256 b2ac1e407ed3ecd7c7faa6de929a68fb51145662cf793c40b69eb59295bba6bc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      Bloxstrap-v2.5.4 (3).exe
    • Size 7.6MB
    • SHA256 b2ac1e407ed3ecd7c7faa6de929a68fb51145662cf793c40b69eb59295bba6bc
    • MD5 SHA1 SHA512 SSDEEP
    • Nirsoft

    • 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 computer location settings

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

    • 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

    • Reads user/profile data of web browsers

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

    • UPX packed file

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

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v15

Tasks