Overview

overview

10

Static

static

3

skid_locker.exe

windows10-2004-x64

9

skid_locker.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    skid_locker.exe
  • Size 1.4MB
  • Sample260418-2ffsssg12k
  • SHA256 9c745f95a09b37bc0486bf0f92aad4a3d5548a939c086b93d6235d34648e683f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
credential_accessdefense_evasiondiscoveryexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\ProgramData\!!!_READ_ME_!!!.txt

Ransom Note
  • !!! README !!! =============================================================== ::: ::: :::::::::: :::::::: ::::::::::: :+: :+: :+: :+: :+: :+: +:+ +:+ +:+ +:+ +:+ +#+ +:+ +#++:++# +#+ +#+ +#+ +#+ +#+ +#+ +#+ #+#+#+# #+# #+# #+# #+# ### ########## ######## ### =============================================================== Dear Management, all of your files have been encrypted with ChaCha20 which is an unbreakable encryption algorithm. Sadly, this is not the only bad news for you. We have also exfiltrated your sensitive data, consisting mostly of databases, backups and other personal information from your company and will be published on our website if you do not cooperate with us. The only way to recover your files is to get the decryption tool from us. To obtain the decryption tool, you need to: 1. Open Tor Browser and visit: http://vectordntlcrlmfkcm4alni734tbcrnd5lk44v6sp4lqal6noqrgnbyd.onion/chat/5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f 2. Follow the instructions on the chat page 3. Receive a sample decryption of up to 4 small files 4. We will provide payment instructions 5. After payment, you will receive decryption tool WARNING: - Do not modify encrypted files - Do not use third party software to restore files - Do not reinstall system If you violate these rules, your files will be permanently damaged. Files encrypted: 0 Total size: 0 bytes Unique ID: 5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f Backup contact (Qtox): 1A51DCBB33FBF603B385D223F599C6D64545E631F7C870FFEA320D84CE5DAF076C1F94100B5B
URLs

  • http://vectordntlcrlmfkcm4alni734tbcrnd5lk44v6sp4lqal6noqrgnbyd.onion/chat/5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f

Extracted

Path

  • C:\Users\Admin\AppData\Local\Temp\!!!_READ_ME_!!!.txt

Ransom Note
  • !!! README !!! =============================================================== ::: ::: :::::::::: :::::::: ::::::::::: :+: :+: :+: :+: :+: :+: +:+ +:+ +:+ +:+ +:+ +#+ +:+ +#++:++# +#+ +#+ +#+ +#+ +#+ +#+ +#+ #+#+#+# #+# #+# #+# #+# ### ########## ######## ### =============================================================== Dear Management, all of your files have been encrypted with ChaCha20 which is an unbreakable encryption algorithm. Sadly, this is not the only bad news for you. We have also exfiltrated your sensitive data, consisting mostly of databases, backups and other personal information from your company and will be published on our website if you do not cooperate with us. The only way to recover your files is to get the decryption tool from us. To obtain the decryption tool, you need to: 1. Open Tor Browser and visit: http://vectordntlcrlmfkcm4alni734tbcrnd5lk44v6sp4lqal6noqrgnbyd.onion/chat/5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f 2. Follow the instructions on the chat page 3. Receive a sample decryption of up to 4 small files 4. We will provide payment instructions 5. After payment, you will receive decryption tool WARNING: - Do not modify encrypted files - Do not use third party software to restore files - Do not reinstall system If you violate these rules, your files will be permanently damaged. Files encrypted: 0 Total size: 0 bytes Unique ID: 5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f Backup contact (Qtox): 1A51DCBB33FBF603B385D223F599C6D64545E631F7C870FFEA320D84CE5DAF076C1F94100B5B
URLs

  • http://vectordntlcrlmfkcm4alni734tbcrnd5lk44v6sp4lqal6noqrgnbyd.onion/chat/5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f

Extracted

Path

  • \Device\HarddiskVolume1\!!!_READ_ME_!!!.txt

Ransom Note
  • !!! README !!! =============================================================== ::: ::: :::::::::: :::::::: ::::::::::: :+: :+: :+: :+: :+: :+: +:+ +:+ +:+ +:+ +:+ +#+ +:+ +#++:++# +#+ +#+ +#+ +#+ +#+ +#+ +#+ #+#+#+# #+# #+# #+# #+# ### ########## ######## ### =============================================================== Dear Management, all of your files have been encrypted with ChaCha20 which is an unbreakable encryption algorithm. Sadly, this is not the only bad news for you. We have also exfiltrated your sensitive data, consisting mostly of databases, backups and other personal information from your company and will be published on our website if you do not cooperate with us. The only way to recover your files is to get the decryption tool from us. To obtain the decryption tool, you need to: 1. Open Tor Browser and visit: http://vectordntlcrlmfkcm4alni734tbcrnd5lk44v6sp4lqal6noqrgnbyd.onion/chat/5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f 2. Follow the instructions on the chat page 3. Receive a sample decryption of up to 4 small files 4. We will provide payment instructions 5. After payment, you will receive decryption tool WARNING: - Do not modify encrypted files - Do not use third party software to restore files - Do not reinstall system If you violate these rules, your files will be permanently damaged. Files encrypted: 3391 Total size: 213939540 bytes Unique ID: 5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f Backup contact (Qtox): 1A51DCBB33FBF603B385D223F599C6D64545E631F7C870FFEA320D84CE5DAF076C1F94100B5B
URLs

  • http://vectordntlcrlmfkcm4alni734tbcrnd5lk44v6sp4lqal6noqrgnbyd.onion/chat/5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f

Extracted

Path

  • C:\!!!_READ_ME_!!!.txt

Ransom Note
  • !!! README !!! =============================================================== ::: ::: :::::::::: :::::::: ::::::::::: :+: :+: :+: :+: :+: :+: +:+ +:+ +:+ +:+ +:+ +#+ +:+ +#++:++# +#+ +#+ +#+ +#+ +#+ +#+ +#+ #+#+#+# #+# #+# #+# #+# ### ########## ######## ### =============================================================== Dear Management, all of your files have been encrypted with ChaCha20 which is an unbreakable encryption algorithm. Sadly, this is not the only bad news for you. We have also exfiltrated your sensitive data, consisting mostly of databases, backups and other personal information from your company and will be published on our website if you do not cooperate with us. The only way to recover your files is to get the decryption tool from us. To obtain the decryption tool, you need to: 1. Open Tor Browser and visit: http://vectordntlcrlmfkcm4alni734tbcrnd5lk44v6sp4lqal6noqrgnbyd.onion/chat/5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f 2. Follow the instructions on the chat page 3. Receive a sample decryption of up to 4 small files 4. We will provide payment instructions 5. After payment, you will receive decryption tool WARNING: - Do not modify encrypted files - Do not use third party software to restore files - Do not reinstall system If you violate these rules, your files will be permanently damaged. Files encrypted: 1168 Total size: 618162372 bytes Unique ID: 5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f Backup contact (Qtox): 1A51DCBB33FBF603B385D223F599C6D64545E631F7C870FFEA320D84CE5DAF076C1F94100B5B
URLs

  • http://vectordntlcrlmfkcm4alni734tbcrnd5lk44v6sp4lqal6noqrgnbyd.onion/chat/5cb9f0f9-e171-403f-bed9-a3cd6ce36d1f

Targets

    • Target
      skid_locker.exe
    • Size 1.4MB
    • SHA256 9c745f95a09b37bc0486bf0f92aad4a3d5548a939c086b93d6235d34648e683f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasionexecutionimpactpersistenceransomwarecredential_accessdiscoveryspywarestealer

    • Clears Windows event logs

      defense_evasionransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Renames multiple (2079) files with added filename extension

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

      ransomware

    • Disables Task Manager via registry modification

      defense_evasion

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

      defense_evasion

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

      credential_accessstealer

    • Drops startup file

    • Impair Defenses: Safe Mode Boot

      defense_evasion

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • 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 v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Direct Volume Access

1
T1006

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Safe Mode Boot

1
T1562.009

Indicator Removal

3
T1070

Clear Windows Event Logs

1
T1070.001

File Deletion

2
T1070.004

Modify Registry

2
T1112

Credential Access

Credentials from Password Stores

2
T1555

Credentials from Web Browsers

1
T1555.003

Windows Credential Manager

1
T1555.004

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

Remote System Discovery

1
T1018

System Information Discovery

1
T1082

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

2
T1490

Tasks