cryptolocker

General

Target

SteamtoolsSetup.exe
Size

1.7MB
Sample

240817-m7cswsvfqp
MD5

dd410c316152077eb8a683ed981fc787
SHA1

360b90cd99dd9ead20b21e50c73a3d0fe10123c1
SHA256

036128ca60c543609bf2c6c362e2f909c85f1760d4a8d6b07c55b73d36d9df0b
SHA512

81f4dceebe93a89b239076937df31bf28542b23ed8e383ca9b30cbdcd89b3d8683fc8fff9c78d74c1ced281e766cb852b54b6c5b5640b6cb0224b66c747d8657
SSDEEP

24576:nkcCSfG0yWS7woCNAi1GoCaLI4/gPGHOV1VVW4Qn652aPOrjB9:kcCSe0yT7wooAi1GhWI4oPGHOVVWvcC

Score

10^/10

Malware Config

Targets

- Target
  
  SteamtoolsSetup.exe
- Size
  
  1.7MB
- MD5
  
  dd410c316152077eb8a683ed981fc787
- SHA1
  
  360b90cd99dd9ead20b21e50c73a3d0fe10123c1
- SHA256
  
  036128ca60c543609bf2c6c362e2f909c85f1760d4a8d6b07c55b73d36d9df0b
- SHA512
  
  81f4dceebe93a89b239076937df31bf28542b23ed8e383ca9b30cbdcd89b3d8683fc8fff9c78d74c1ced281e766cb852b54b6c5b5640b6cb0224b66c747d8657
- SSDEEP
  
  24576:nkcCSfG0yWS7woCNAi1GoCaLI4/gPGHOV1VVW4Qn652aPOrjB9:kcCSe0yT7wooAi1GhWI4oPGHOVVWvcC
Score

10^/10

cryptolocker dharma credential_access defense_evasion discovery 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
- Credentials from Password Stores: Credentials from Web Browsers
  Malicious Access or copy of Web Browser Credential store.
  credential_access stealer
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware defense_evasion impact execution
- Renames multiple (512) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Downloads MZ/PE file
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Credentials from Password Stores: Windows Credential Manager
  Suspicious access to Credentials History.
  credential_access stealer
- Drops startup file
- Executes dropped EXE
- 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
- Drops file in System32 directory
behavioral1