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Ransomware Research
KeRanger Ransomware
KeRanger is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- KeRanger
- First Seen
- March 1, 2016
How KeRanger Ransomware Works
Targeted Files
For MacOS
File Encryption Patterns
KeRanger modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encrypted
Ransom Note and Payment Demands
After encrypting files, KeRanger displays ransom notes demanding payment for file recovery:
README_FOR_DECRYPT.txt
Ransom message:
notes/README_FOR_DECRYPT.txt
Technical Indicators
Associated Executable Files
The following executable files are associated with KeRanger ransomware:
Transmission-2.90.dmg
31b6adb633cff2a0f34cefd2a218097f3a9a8176c9363cc70fe41fe02af810b9_dmg
KeRanger
2.dmg
Transmission-2.90-infected.dmg
1d6297e2427f1d00a5b355d6d50809cb _Transmission-2.90.dmg_d1ac55
Transmission-2.90.dmg.bin
1d6297e2427f1d00a5b355d6d50809cb _Transmission-2.90.dmg
Transmission-2.90.dmg_d1ac55
A.dmg
Transmission-2.90.dmg_
1.dmg
Transmission-2.90-2.dmg
Transmission-2.90_1.dmg
Transmission
8
56b1d956112b0b7bd3e44f20cf1f2c19 _Transmission
KeRanger.3..Mach-O
1_Transmission
General.rtf
kernel_service
1.rtf
test2
14a4df1df622562b3bf5bc9a94e6a783 _General.rtf_
58c99fe20b348702b936abb0
General.upx
4.dmg
Transmission-2.90-DO-NOT-touch.dmg
Transmission-2.90.dmg_d7d765
Transmission-2.901.dmg
Transmission-2.90_d7d765.dmg
Transmission-2.90_2.dmg
Transmission-2.90.2dmg
7
test1
3151d9a085d14508fa9f10d48afc7016 _Transmission
2_Transmission
5.rtf
861c3da2bbce6c09eda2709c8994f34c _General.rtf_
General_.upx
Elastio Can Help You
Don't let KeRanger ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This KeRanger ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like KeRanger.
Last updated: July 30, 2025