General

  • Target

    .

  • Size

    147KB

  • Sample

    240525-ntgelafe72

  • MD5

    08f87962a1b8825bfa5c17bcdb231053

  • SHA1

    392e2388dde314211190be184b299fcc9728023c

  • SHA256

    84eeeaa3f78578687c3bc6617b9c373a6959925d1bc1528ae57709c1475d8746

  • SHA512

    33e745b9b3a2367956240ba963060e4e8526684484f85e5911d4a7cc0ff6bbd5159b2d54ded67c7e99aa92da28e2651f99508a87aa930086b9bc86c0cc603687

  • SSDEEP

    1536:oAk6HxYftVkMn1/R4Dillk0zSP30vD9328s4DbHhqiS:XkRfPnRpllBwIpHhqiS

Malware Config

Extracted

Path

C:\Users\Admin\README_HOW_TO_UNLOCK.TXT

Ransom Note
YOUR FILE HAS BEEN LOCKED In order to unlock your files, follow the instructions bellow: 1. Download and install Tor Browser 2. After a successful installation, run Tor Browser and wait for its initialization. 3. Type in the address bar: http://zvnvp2rhe3ljwf2m.onion 4. Follow the instructions on the site.
URLs

http://zvnvp2rhe3ljwf2m.onion

Targets

    • Target

      .

    • Size

      147KB

    • MD5

      08f87962a1b8825bfa5c17bcdb231053

    • SHA1

      392e2388dde314211190be184b299fcc9728023c

    • SHA256

      84eeeaa3f78578687c3bc6617b9c373a6959925d1bc1528ae57709c1475d8746

    • SHA512

      33e745b9b3a2367956240ba963060e4e8526684484f85e5911d4a7cc0ff6bbd5159b2d54ded67c7e99aa92da28e2651f99508a87aa930086b9bc86c0cc603687

    • SSDEEP

      1536:oAk6HxYftVkMn1/R4Dillk0zSP30vD9328s4DbHhqiS:XkRfPnRpllBwIpHhqiS

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Renames multiple (65) files with added filename extension

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

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Installed Components in the registry

    • Sets service image path in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • UPX packed file

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

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • 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)

    • 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

    • 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