Overview

overview

10

Static

static

10

ecea6b7727...7c.exe

windows7-x64

10

ecea6b7727...7c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ecea6b772742758a2240898ef772ca11aa9d870aec711cffab8994c23044117c

  • Size

    2.9MB

  • Sample

    231207-psrdvaaf79

  • MD5

    ff8a7dd8b1cb0420dd18810041d172a7

  • SHA1

    cc166bc3eaa024aac4a2cdc02174ae87fcf47e28

  • SHA256

    ecea6b772742758a2240898ef772ca11aa9d870aec711cffab8994c23044117c

  • SHA512

    edac57212b21a8046ab07213bf0ea51d1f3c5c9c539812fb1dffba6663b1f74e137991128f1c3135f4c1ab2ff4b470dcc6563ecae5079546dd1f6dfda210ba60

  • SSDEEP

    49152:VUzeOdI+NDXIgqUPGPiTgvRZHrn7hQyZ9haNSAXpuNh/RgaJ2wf3:VUzekDpRGaTARZHPhQMCcyYvwwf3

Score
10/10
blackcatevasionransomware

Malware Config

Extracted

Family

blackcat

Attributes
  • enable_network_discovery

    true

  • enable_self_propagation

    true

  • enable_set_wallpaper

    true

  • extension

    kh1ftzx

  • note_file_name

    RECOVER-${EXTENSION}-FILES.txt

  • note_full_text

    >> What happened? Important files on your network was ENCRYPTED and now they have "${EXTENSION}" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED. If you DON'T WANT your sensitive data to be PUBLISHED you have to act quickly. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Private financial information including: clients data, bills, budgets, annual reports, bank statements. - Manufacturing documents including: datagrams, schemas, drawings in solidworks format - And more... >> CAUTION DO NOT MODIFY ENCRYPTED FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. >> What should I do next? Follow these simple steps to get everything back to normal: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://rfosusl6qdm4zhoqbqnjxaloprld2qz35u77h4aap46rhwkouejsooqd.onion/?access-key=${ACCESS_KEY}

rsa_pubkey.plain

Extracted

Path

C:\RECOVER-kh1ftzx-FILES.txt

Ransom Note
>> What happened? Important files on your network was ENCRYPTED and now they have "kh1ftzx" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED. If you DON'T WANT your sensitive data to be PUBLISHED you have to act quickly. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Private financial information including: clients data, bills, budgets, annual reports, bank statements. - Manufacturing documents including: datagrams, schemas, drawings in solidworks format - And more... >> CAUTION DO NOT MODIFY ENCRYPTED FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. >> What should I do next? Follow these simple steps to get everything back to normal: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://rfosusl6qdm4zhoqbqnjxaloprld2qz35u77h4aap46rhwkouejsooqd.onion/?access-key=UxntJi70cnr%2FeZKl3a3X2vYPtySVfSv6QP0EyER8b4yxq%2BbelUrzG7lf9eA0zAbb9XijZH6xILkIlOCa2SSh5k0iJHaF4cyzH%2Bdea937n%2Bhf7mXqJtldjzbHmViGarJwFyCzryAHRKh4YT3ZizBoEYwINNLzQ%2FlZ37iZgbGVTrf1dp874fbBlSPkIDlPGFp4j2Sy8UCA%2Fg1QC3eRCIgENAwe%2FkPfNn5bVmSjQEMt%2By3scHfe8BPLrVSsq%2FYFm9CuxGhoKss5MeYRBZGaaXBu%2FjUj%2FzkS%2BOSygpefbm0BNUsTctNGiIVjBd0F%2B8xraLKmYSLJWgbNGi0FijgCHsZlrA%3D%3D
URLs

http://rfosusl6qdm4zhoqbqnjxaloprld2qz35u77h4aap46rhwkouejsooqd.onion/?access-key=UxntJi70cnr%2FeZKl3a3X2vYPtySVfSv6QP0EyER8b4yxq%2BbelUrzG7lf9eA0zAbb9XijZH6xILkIlOCa2SSh5k0iJHaF4cyzH%2Bdea937n%2Bhf7mXqJtldjzbHmViGarJwFyCzryAHRKh4YT3ZizBoEYwINNLzQ%2FlZ37iZgbGVTrf1dp874fbBlSPkIDlPGFp4j2Sy8UCA%2Fg1QC3eRCIgENAwe%2FkPfNn5bVmSjQEMt%2By3scHfe8BPLrVSsq%2FYFm9CuxGhoKss5MeYRBZGaaXBu%2FjUj%2FzkS%2BOSygpefbm0BNUsTctNGiIVjBd0F%2B8xraLKmYSLJWgbNGi0FijgCHsZlrA%3D%3D

Extracted

Path

C:\RECOVER-kh1ftzx-FILES.txt

Ransom Note
>> What happened? Important files on your network was ENCRYPTED and now they have "kh1ftzx" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED. If you DON'T WANT your sensitive data to be PUBLISHED you have to act quickly. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Private financial information including: clients data, bills, budgets, annual reports, bank statements. - Manufacturing documents including: datagrams, schemas, drawings in solidworks format - And more... >> CAUTION DO NOT MODIFY ENCRYPTED FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. >> What should I do next? Follow these simple steps to get everything back to normal: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://rfosusl6qdm4zhoqbqnjxaloprld2qz35u77h4aap46rhwkouejsooqd.onion/?access-key=Sdzfi7%2Bwfijc5dMSoj2q1hqe%2FF0XHefoPXhE8zL1YQXlLb1TLxxYVAKEQS%2BWHI83jCQHbi9a%2BypynkRAp1ccN1G2Gc%2FV5o9okOkFgGaQ%2FdPbIK0oMFz2FyWXZ2Dw4DX2x2hqqYCZSfjGdctR1FmHd3x2oHW%2BquYMBUL4QTN%2BWhp6O2XzErgo7cFn4JalSv52d6rYvr7XR1ChHB%2B9mh6YD6%2FQoIg7Mqd7dsivTUi7rrJiJBKtmKR7xBNw%2B88Qso%2Bp6QrJbKQzjFi4Yqs4FJ0Sy%2B8CJG7F3RzZL0rOY9yVzqxmPStkvctP3K5KS%2FOZY5CpIa9IVbYek6NVdH5Jr2gkXg%3D%3D
URLs

http://rfosusl6qdm4zhoqbqnjxaloprld2qz35u77h4aap46rhwkouejsooqd.onion/?access-key=Sdzfi7%2Bwfijc5dMSoj2q1hqe%2FF0XHefoPXhE8zL1YQXlLb1TLxxYVAKEQS%2BWHI83jCQHbi9a%2BypynkRAp1ccN1G2Gc%2FV5o9okOkFgGaQ%2FdPbIK0oMFz2FyWXZ2Dw4DX2x2hqqYCZSfjGdctR1FmHd3x2oHW%2BquYMBUL4QTN%2BWhp6O2XzErgo7cFn4JalSv52d6rYvr7XR1ChHB%2B9mh6YD6%2FQoIg7Mqd7dsivTUi7rrJiJBKtmKR7xBNw%2B88Qso%2Bp6QrJbKQzjFi4Yqs4FJ0Sy%2B8CJG7F3RzZL0rOY9yVzqxmPStkvctP3K5KS%2FOZY5CpIa9IVbYek6NVdH5Jr2gkXg%3D%3D

Targets

    • Target

      ecea6b772742758a2240898ef772ca11aa9d870aec711cffab8994c23044117c

    • Size

      2.9MB

    • MD5

      ff8a7dd8b1cb0420dd18810041d172a7

    • SHA1

      cc166bc3eaa024aac4a2cdc02174ae87fcf47e28

    • SHA256

      ecea6b772742758a2240898ef772ca11aa9d870aec711cffab8994c23044117c

    • SHA512

      edac57212b21a8046ab07213bf0ea51d1f3c5c9c539812fb1dffba6663b1f74e137991128f1c3135f4c1ab2ff4b470dcc6563ecae5079546dd1f6dfda210ba60

    • SSDEEP

      49152:VUzeOdI+NDXIgqUPGPiTgvRZHrn7hQyZ9haNSAXpuNh/RgaJ2wf3:VUzekDpRGaTARZHPhQMCcyYvwwf3

    Score
    10/10
    blackcatevasionransomware

    • 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

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (7455) files with added filename extension

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

      ransomware

    • Enumerates connected drives

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

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks