Overview

overview

10

Static

static

10

0c6f444c69...79.exe

windows7-x64

10

0c6f444c69...79.exe

windows10-2004-x64

10

Resubmissions

29/12/2022, 04:38

221229-e9sm5acd2710

29/12/2022, 04:35

221229-e7y25acd2310

10/11/2022, 11:04

221110-m6r67ahcf610

10/11/2022, 11:03

221110-m5vkxshce310

10/11/2022, 11:00

221110-m37sgahcc410

10/11/2022, 10:58

221110-m2wntahcb510

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General

  • Target
    0c6f444c6940a3688ffc6f8b9d5774c032e3551ebbccb64e4280ae7fc1fac479.7z
  • Size 1.3MB
  • Sample221110-m37sgahcc4
  • SHA256 65b331074f906c46057da085ffdd1d98b61632a3e996cd252d4548a5e4c6bb10
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
blackcatdiscoveryevasionransomwaretrojan

Malware Config

Extracted

Family

  • blackcat

Credentials
  • Username

    KELLERSUPPLY\Administrator
  • Password

    d@gw00d
Credentials
  • Username

    KELLERSUPPLY\AdminRecovery
  • Password

    K3ller!$Supp1y
Credentials
  • Username

    .\Administrator
  • Password

    d@gw00d
Credentials
  • Username

    .\Administrator
  • Password

    K3ller!$Supp1y
Attributes
  • enable_network_discovery

    true

  • enable_self_propagation

    false

  • enable_set_wallpaper

    true

  • extension

    sykffle

  • note_file_name

    RECOVER-${EXTENSION}-FILES.txt

  • note_full_text

    >> Introduction Important files on your system was ENCRYPTED and now they have have "${EXTENSION}" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED and it will be PUBLISHED if you refuse to cooperate. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Financial information including clients data, bills, budgets, annual reports, bank statements. - Complete datagrams/schemas/drawings for manufacturing in solidworks format - And more... Private preview is published here: http://zujgzbu5y64xbmvc42addp4lxkoosb4tslf5mehnh7pvqjpwxn5gokyd.onion/b21e1fb6-ff88-425b-8339-3523179a1e3e/886cf430a907bbe9a3fd38fb704d524dbd199c1b042ad6f65dc72ad78704e21 >> CAUTION DO NOT MODIFY FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. YOUR DATA IS STRONGLY ENCRYPTED, YOU CAN NOT DECRYPT IT WITHOUT CIPHER KEY. >> Recovery procedure Follow these simple steps to get in touch and recover your data: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://mu75ltv3lxd24dbyu6gtvmnwybecigs5auki7fces437xvvflzva2nqd.onion/?access-key=${ACCESS_KEY}

rsa_pubkey.plain

Extracted

Path

  • C:\RECOVER-sykffle-FILES.txt

Ransom Note
  • >> Introduction Important files on your system was ENCRYPTED and now they have have "sykffle" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED and it will be PUBLISHED if you refuse to cooperate. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Financial information including clients data, bills, budgets, annual reports, bank statements. - Complete datagrams/schemas/drawings for manufacturing in solidworks format - And more... Private preview is published here: http://zujgzbu5y64xbmvc42addp4lxkoosb4tslf5mehnh7pvqjpwxn5gokyd.onion/b21e1fb6-ff88-425b-8339-3523179a1e3e/886cf430a907bbe9a3fd38fb704d524dbd199c1b042ad6f65dc72ad78704e21 >> CAUTION DO NOT MODIFY FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. YOUR DATA IS STRONGLY ENCRYPTED, YOU CAN NOT DECRYPT IT WITHOUT CIPHER KEY. >> Recovery procedure Follow these simple steps to get in touch and recover your data: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://mu75ltv3lxd24dbyu6gtvmnwybecigs5auki7fces437xvvflzva2nqd.onion/?access-key=WkFKUyjkqKGeFE4i4Nuu027UkHI%2F8dehprcQjK46N2vz5VBwAnYMtZTbPAdKNzLzUomwVPd2KceFeGkWAIBe0UhU37JmkGIPsczITF1YJyvtlj5xAzJgXaKTaL46Twfeb%2Bd2eNSSZdGwsDEfKEtZtZSCitd99ostxfEyRbbdWfYpYD1avrPKiD79K61E0ga3c97G9azgUl5g735DhkwtuwY4gkdjOca4jUM07RAd0k38at5D3B8CtOnJUPCScYfwEnbj8SahgJ4bXgoq9zEYtgZfX39ACVzijcIE2DjdIVz8lSxGgZBIgWdJzH5SV5qoLLVRqg7OKI%2F5Ys7uC6%2BHCA%3D%3D
URLs

  • http://zujgzbu5y64xbmvc42addp4lxkoosb4tslf5mehnh7pvqjpwxn5gokyd.onion/b21e1fb6-ff88-425b-8339-3523179a1e3e/886cf430a907bbe9a3fd38fb704d524dbd199c1b042ad6f65dc72ad78704e21

  • http://mu75ltv3lxd24dbyu6gtvmnwybecigs5auki7fces437xvvflzva2nqd.onion/?access-key=WkFKUyjkqKGeFE4i4Nuu027UkHI%2F8dehprcQjK46N2vz5VBwAnYMtZTbPAdKNzLzUomwVPd2KceFeGkWAIBe0UhU37JmkGIPsczITF1YJyvtlj5xAzJgXaKTaL46Twfeb%2Bd2eNSSZdGwsDEfKEtZtZSCitd99ostxfEyRbbdWfYpYD1avrPKiD79K61E0ga3c97G9azgUl5g735DhkwtuwY4gkdjOca4jUM07RAd0k38at5D3B8CtOnJUPCScYfwEnbj8SahgJ4bXgoq9zEYtgZfX39ACVzijcIE2DjdIVz8lSxGgZBIgWdJzH5SV5qoLLVRqg7OKI%2F5Ys7uC6%2BHCA%3D%3D

Extracted

Path

  • C:\RECOVER-sykffle-FILES.txt

Ransom Note
  • >> Introduction Important files on your system was ENCRYPTED and now they have have "sykffle" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED and it will be PUBLISHED if you refuse to cooperate. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Financial information including clients data, bills, budgets, annual reports, bank statements. - Complete datagrams/schemas/drawings for manufacturing in solidworks format - And more... Private preview is published here: http://zujgzbu5y64xbmvc42addp4lxkoosb4tslf5mehnh7pvqjpwxn5gokyd.onion/b21e1fb6-ff88-425b-8339-3523179a1e3e/886cf430a907bbe9a3fd38fb704d524dbd199c1b042ad6f65dc72ad78704e21 >> CAUTION DO NOT MODIFY FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. YOUR DATA IS STRONGLY ENCRYPTED, YOU CAN NOT DECRYPT IT WITHOUT CIPHER KEY. >> Recovery procedure Follow these simple steps to get in touch and recover your data: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://mu75ltv3lxd24dbyu6gtvmnwybecigs5auki7fces437xvvflzva2nqd.onion/?access-key=HUUKVBCWb2JMHTEF8r450E4hcfSSg91ZDKYb5LVGTDmJ44rfxhy3cDI%2FlUcDrmUHKmFjDOh%2FL42bAi5VKwNd8PnaD8grquVIVC7tdS1Oh6A%2BA%2FYNC1rDSZ6rkvheBJnY9SxO94O%2BloadddVKpBicKmHw9jx29Nd%2BfXF4MiiCcP%2Bf8mXtv628HC5z2WV40PlrQ5YbqONBiCYgrM6Eci6th1TQ%2Fpd4hbCMVAhH%2FMaMVtQZ9745GRRmSUzPuPDHWm1UTvrIyPeluPq766Sb5DeozALBJTR%2FkHz6XwrTrw3fVprr0ycUGcsuWtKjcLTLiJGNB419wGdbjndaLAW9N%2FNL4w%3D%3D
URLs

  • http://zujgzbu5y64xbmvc42addp4lxkoosb4tslf5mehnh7pvqjpwxn5gokyd.onion/b21e1fb6-ff88-425b-8339-3523179a1e3e/886cf430a907bbe9a3fd38fb704d524dbd199c1b042ad6f65dc72ad78704e21

  • http://mu75ltv3lxd24dbyu6gtvmnwybecigs5auki7fces437xvvflzva2nqd.onion/?access-key=HUUKVBCWb2JMHTEF8r450E4hcfSSg91ZDKYb5LVGTDmJ44rfxhy3cDI%2FlUcDrmUHKmFjDOh%2FL42bAi5VKwNd8PnaD8grquVIVC7tdS1Oh6A%2BA%2FYNC1rDSZ6rkvheBJnY9SxO94O%2BloadddVKpBicKmHw9jx29Nd%2BfXF4MiiCcP%2Bf8mXtv628HC5z2WV40PlrQ5YbqONBiCYgrM6Eci6th1TQ%2Fpd4hbCMVAhH%2FMaMVtQZ9745GRRmSUzPuPDHWm1UTvrIyPeluPq766Sb5DeozALBJTR%2FkHz6XwrTrw3fVprr0ycUGcsuWtKjcLTLiJGNB419wGdbjndaLAW9N%2FNL4w%3D%3D

Targets

    • Target
      0c6f444c6940a3688ffc6f8b9d5774c032e3551ebbccb64e4280ae7fc1fac479
    • Size 2.6MB
    • SHA256 0c6f444c6940a3688ffc6f8b9d5774c032e3551ebbccb64e4280ae7fc1fac479
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    blackcatdiscoveryevasionransomwaretrojan

    • BlackCat

      A Rust-based ransomware sold as RaaS first seen in late 2021.

      ransomwareblackcat

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Disables taskbar notifications via registry modification

      evasion

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Enumerates connected drives

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

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks