Resubmissions

21/02/2024, 14:00

240221-ra9htagd7x1

10/02/2024, 00:57

240210-ba6txshd2710

General

  • Target
    master
  • Size 157KB
  • Sample240210-ba6txshd27
  • SHA256 53a51984004618984c2817af329f318cffc49b30b5e45e41017b7c0b9c2d5c6a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      master
    • Size 157KB
    • SHA256 53a51984004618984c2817af329f318cffc49b30b5e45e41017b7c0b9c2d5c6a
    • MD5 SHA1 SHA512 SSDEEP
    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    • CryptoLocker

      Ransomware family with multiple variants.

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Mimikatz

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

    • Modifies WinLogon for persistence

    • Modifies Windows Defender Real-time Protection settings

    • UAC bypass

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (549) files with added filename extension

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

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

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Disables use of System Restore points

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Sets file execution options in registry

    • Sets service image path in registry

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks