Resubmissions

18-04-2024 20:02

240418-yr4gfsef9v 10

18-04-2024 19:59

240418-yqw1zsef5z 10

23-03-2024 00:07

240323-aearlsag84 10

20-03-2024 19:20

240320-x17psshe51 10

20-03-2024 19:18

240320-xz2gdshe3t 10

19-03-2024 21:09

240319-zzr9tsgd4t 10

General

  • Target

    GH0ST.exe

  • Size

    127KB

  • Sample

    240320-x17psshe51

  • MD5

    90b828929de1319e5b9bf94f4ae990b3

  • SHA1

    8fc41267cfb9f057e78beca15b775d20fb01434b

  • SHA256

    14592b6ee58e6c1abe76e8148f087b1da84f54892b1cca31540dd728298bb185

  • SHA512

    57e50e8c3e424980bfb96d4d1862e998efd50e45df25478fc80537a67a27b8d7aa8cce00400e0126216395205946a38876a2ff494b74d86043c5e5779a4b5921

  • SSDEEP

    3072:oDk4Rq96liXWAPEV9Ue4znvqg2WVrxuF:h4Rq9UCW7WhZx

Malware Config

Extracted

Path

C:\Users\Admin\3D Objects\read_it.txt

Ransom Note
Don't worry, you can return all your files! All your files like documents, photos, databases and other important are encrypted What guarantees do we give to you? You can send 3 of your encrypted files and we decrypt it for free. You must follow these steps To decrypt your files : 1) Write on our e-mail :[email protected] ( In case of no answer in 24 hours check your spam folder or write us to this e-mail: [email protected]) 2) Obtain Bitcoin (You have to pay for decryption in Bitcoins. After payment we will send you the tool that will decrypt all your files.)

Targets

    • Target

      GH0ST.exe

    • Size

      127KB

    • MD5

      90b828929de1319e5b9bf94f4ae990b3

    • SHA1

      8fc41267cfb9f057e78beca15b775d20fb01434b

    • SHA256

      14592b6ee58e6c1abe76e8148f087b1da84f54892b1cca31540dd728298bb185

    • SHA512

      57e50e8c3e424980bfb96d4d1862e998efd50e45df25478fc80537a67a27b8d7aa8cce00400e0126216395205946a38876a2ff494b74d86043c5e5779a4b5921

    • SSDEEP

      3072:oDk4Rq96liXWAPEV9Ue4znvqg2WVrxuF:h4Rq9UCW7WhZx

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Meduza

      Meduza is a crypto wallet and info stealer written in C++.

    • Meduza Stealer payload

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Installed Components in the registry

    • Sets file execution options in registry

    • Sets service image path in registry

    • Uses Session Manager for persistence

      Creates Session Manager registry key to run executable early in system boot.

    • 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

    • 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.

    • Registers COM server for autorun

    • Windows security modification

    • Adds Run key to start application

    • 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.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • 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

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks