cryptolocker

General

Target

https://loot-link.com/s?fJjn&r=aHR0cHM6Ly9nYXRld2F5LnBsYXRvYm9vc3QuY29tL2EvOD9pZD1iMDdkMjZlMzU5MjhiNjk3MWMwMjY4NjZmZWZlYjlkNGI1Yjc0ZWRmMzNjM2Q1YTQ3NTA1OTdhYzAzNDdkMGVhJnRrPWoxOGQ%3D
Sample

240923-1bejhatgmc

Score

10^/10

Malware Config

Targets

- Target
  
  https://loot-link.com/s?fJjn&r=aHR0cHM6Ly9nYXRld2F5LnBsYXRvYm9vc3QuY29tL2EvOD9pZD1iMDdkMjZlMzU5MjhiNjk3MWMwMjY4NjZmZWZlYjlkNGI1Yjc0ZWRmMzNjM2Q1YTQ3NTA1OTdhYzAzNDdkMGVhJnRrPWoxOGQ%3D
Score

10^/10

cryptolocker dharma bootkit credential_access defense_evasion discovery evasion execution impact persistence ransomware spyware stealer
- CryptoLocker
  Ransomware family with multiple variants.
  ransomware cryptolocker
- Dharma
  Dharma is a ransomware that uses security software installation to hide malicious activities.
  ransomware dharma
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware defense_evasion impact execution
- Renames multiple (570) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Disables RegEdit via registry modification
  evasion
- Disables Task Manager via registry modification
  evasion
- Downloads MZ/PE file
- Credentials from Password Stores: Windows Credential Manager
  Suspicious access to Credentials History.
  credential_access stealer
- Drops startup file
- Executes dropped EXE
- Loads dropped DLL
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Adds Run key to start application
  persistence
- Drops desktop.ini file(s)
- Legitimate hosting services abused for malware hosting/C2
- Modifies WinLogon
  persistence
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
- Drops file in System32 directory
behavioral1