Resubmissions

08/04/2025, 20:25

250408-y7hvpa1jx8 7

07/04/2025, 12:12

250407-pdb1ls1n19 7

07/04/2025, 06:52

250407-hm4nnavlt5 4

07/04/2025, 06:37

250407-hdfv8svjt9 8

07/04/2025, 06:24

250407-g6de5s1wd1 10

07/04/2025, 06:14

250407-gzslgs1vcw 10

07/04/2025, 05:55

250407-gmlbmstkw4 10

General

  • Target

    https://mega.nz/folder/WmAyxRaC#J76wNbsVS9RlhD0k7bjJbQ

  • Sample

    250407-g6de5s1wd1

Malware Config

Targets

    • Target

      https://mega.nz/folder/WmAyxRaC#J76wNbsVS9RlhD0k7bjJbQ

    • InfinityLock Ransomware

      Also known as InfinityCrypt. Based on the open-source HiddenTear ransomware.

    • Infinitylock family

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

    • Mimikatz family

    • mimikatz is an open source tool to dump credentials on Windows

    • Boot or Logon Autostart Execution: Active Setup

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

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • 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.

    • Possible privilege escalation attempt

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • System Binary Proxy Execution: Rundll32

      Abuse Rundll32 to proxy execution of malicious code.

    • Adds Run key to start application

    • 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

    • Modifies WinLogon

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks