Resubmissions

25-10-2021 07:50

211025-jn857sfgg4 10

20-10-2021 09:26

211020-ld6cnshgel 10

General

  • Target

    b53415f6_lcvDB3iF4J

  • Size

    7.4MB

  • Sample

    211025-jn857sfgg4

  • MD5

    b53415f6d38ce4831cbf327daf5201b4

  • SHA1

    778d6f976e10d201903c76adcd18f14e685a3704

  • SHA256

    4efcc256493c1c7d8f695bee676beab4aaf3d3d1e1847cf8462c38af1107b7b8

  • SHA512

    0c2e2fd8ebfe175dc844d64ad9e85f8ab23f8e63b75d7773a38bf68741071c0ea6aa91402b1ab5813a7d66b289650b1e868c56dd86636dcc26c37c07bdb55bb4

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\DECRYPT-FILES.TXT

Ransom Note
Ooops! All your important files are encrypted! [+] What happend to my computer? [+] All your important files are encrypted. No one can help you to restore files without our special decryptor. Backups were either encrypted or deleted. Shadow copies also removed. If you want to restore some of your files for free write to email (contact is below) and attach 2-3 encrypted files. You will receive decrypted samples. To decrypt other files you have to pay $250. [+] How do i pay? [+] Payment is accepted in Bitcoin only. Please check the current price of Bitcoin and buy some Bitcoins. And send the correct amount to the address specified at the bottom. [+] How can i contact? [+] 1.Download Tor browser (https://www.torproject.org/) 2.Create account on mail2tor (http://mail2tor2zyjdctd.onion/) 3.Write email to us (CobraLocker@mail2tor.com) If you can't use tor in your country you can write to us on our temporary email address. [+] What if i already paid? [+] Send your Bitcoin wallet ID to e-mail provided above. Attention! 1.Do not modify encrypted files. 2.Do not try decrypt your data using third party software. 3.Do not turn off your computer. Our bitcoin address: bc1q80xu9j6wpesm2jg2w4pzpyhqjd5wsrg46ap6pe Our temporary e-mail address: f64dfn9pbhybaqfrh5dp65jrzcg@protonmail.com
Emails

CobraLocker@mail2tor.com

f64dfn9pbhybaqfrh5dp65jrzcg@protonmail.com

URLs

http://mail2tor2zyjdctd.onion/

Targets

    • Target

      b53415f6_lcvDB3iF4J

    • Size

      7.4MB

    • MD5

      b53415f6d38ce4831cbf327daf5201b4

    • SHA1

      778d6f976e10d201903c76adcd18f14e685a3704

    • SHA256

      4efcc256493c1c7d8f695bee676beab4aaf3d3d1e1847cf8462c38af1107b7b8

    • SHA512

      0c2e2fd8ebfe175dc844d64ad9e85f8ab23f8e63b75d7773a38bf68741071c0ea6aa91402b1ab5813a7d66b289650b1e868c56dd86636dcc26c37c07bdb55bb4

    • Maze

      Ransomware family also known as ChaCha.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Disables Task Manager via registry modification

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Possible privilege escalation attempt

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Loads dropped DLL

    • Modifies file permissions

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

File Permissions Modification

1
T1222

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Tasks