fileDesktopOSIRIS.htm
notes/DesktopOSIRIS.htm
Location: UserProfile
Ransomware Research
Locky-Osiris Ransomware
Locky-Osiris is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- Locky-Osiris
- First Seen
- December 1, 2016
How Locky-Osiris ransomware works
File modification behavior
Locky-Osiris updates file modification timestamps after encryption.
File encryption patterns
Locky-Osiris modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .osiris
Ransom note and payment demands
After encrypting files, Locky-Osiris displays ransom notes demanding payment for file recovery:
file/^OSIRIS-[a-f0-9]{4}\.htm\b/
notes/OSIRIS-d004.htm
Location: EveryFolder
screenshot
notes/DesktopOSIRIS.bmp
Location: Desktop
Technical indicators
Associated executable files
The following executable files are associated with Locky-Osiris ransomware:
- fQuANqFwqs3.dll
- 0.exe
- a.exe
- cSzdajLDLSL1.dll
- DvNfXSRc3.dll
- DvNfXSRc4.dll
- 874ghv3.dll
- clsooach1.feds.4048.dr
- sonmoga1.rudf.2952.dr
- WHByTsevns1.dll
- AiOzztua1.dll
- azXaCUy1.dll
- 1.js
- Item-Delivery-Details-00659753.doc.wsf
- Nfr Calculates
- 8398f3b.png
- 28dc3b294da79.png
- 69d420ae5f7b6.png
- 580382ee.png
- e878d4b186a6df9c.png
- f7ad0.png
- 7d5ed.png
- f3ba75f8.png
- 77a5b3139.png
- 0c776bba7b9.png
- 47e66ff4ba0308.png
- 5.png
- 32.png
- 047.png
- 57.png
- a7874be441e51887.png
- f28ba1131dd03fa.png
- 724.png
- 1bde2880e3f67ee.png
- 2707.png
- 5cb6b2f5e2585885.png
- 96f6bf527.png
- 1f57706f283d1d3.png
- c902f7ad93.png
- c8f18a4ba22232.png
- f0cbcfc.png
- 1859cad102310b0.png
- cc2376fed.png
- e9b5a1b84eb4d0a.png
- e5026.png
- 42c6d1a339.png
- 9.png
- 3d0b067bbd.png
- c5c54b56258.png
- acab516b.png
- 91c.png
- e48f518bd8.png
- 2a4de7fc6.png
- f268bb.png
- 5818.png
- 104206.png
- 029f18730.png
- ff.png
- a1.exe
- 25a10c38cfc4.png
- 70152669.png
- 718a.png
About this analysis
This Locky-Osiris ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Locky-Osiris.
Detection coverage
Elastio detects Locky-Osiris inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Locky-Osiris across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.