General
- Target 4ed176edb75ae2114cda8cfb3f83ac2ecdc4476fa1ef30ad8c81a54c0a223a29.exe
- Size 1.8MB
- Sample251018-c56cbag16d
- SHA256 4ed176edb75ae2114cda8cfb3f83ac2ecdc4476fa1ef30ad8c81a54c0a223a29
- MD5 18498b1ff111ee9d9a037c280f75b720
- SHA1 0e9a47782e39741a2c161bf639252d33ad3a428a
- SHA512 c578122532d223d55a752f89bc72a22127e791d967728cbd527df54cd5aac1471642183aa4a29f310646679eb753919a2ac02b9b51437bb504dd48e24211d80a
- SSDEEP 24576:jZgTpNZ+WIp82mx6gq+Jn5tNj32+t40VzQJSGR8cknOuP3S+hpDTFMs2UWz7vs75:WbnbdG+t40VzMSGR8zdpDTKs2N7YJlF
- MD5 SHA1 SHA512 SSDEEP
Static task
static1
Behavioral task
behavioral1
Sample
4ed176edb75ae2114cda8cfb3f83ac2ecdc4476fa1ef30ad8c81a54c0a223a29.exe
Resource
win10v2004-20251016-en
Behavioral task
behavioral2
Sample
4ed176edb75ae2114cda8cfb3f83ac2ecdc4476fa1ef30ad8c81a54c0a223a29.exe
Resource
win11-20251015-en
Malware Config
Extracted
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C:\fucked_icon\READ_ME_NOW.txt
- / # Hello, if you are seeing this then you have been attacked by Kyber Ransomware. \ <=> Your files are encrypted with the AES-256-CTR algorithm. >-- (Explanation) https://en.wikipedia.org/wiki/Advanced_Encryption_Standard <=> Two asymmetric algorithms X25519 and Kyber1024 were used for key generation. >-- (Explanation) https://en.wikipedia.org/wiki/Curve25519 >-- (Explanation) https://en.wikipedia.org/wiki/Kyber <=> Keys are created from several random sources, so do not hope that you will return the files without our help >-- (Explanation) https://en.wikipedia.org/wiki//dev/random >-- (Explanation) https://en.wikipedia.org/wiki/RDRAND >-- (Explanation) https://en.wikipedia.org/wiki/HKDF (??WE HAVE A FLASH DRIVE WITH BACKUPS ON THE ADMIN'S NECK??) >======================================================================================== > In addition to encrypting files, a lot of data has been downloaded from your network. > If you don't write to us, within a week or two your name will end up on our > blog with example of important data. >======================================================================================== (??CAN WE TRUST HACKERS??) >======================================================================================== > If you come to our chat room, you can count on free decryption for three small files. > and examples of the downloaded data. >======================================================================================== (??WE DON'T HAVE VALUABLE DATA??) >======================================================================================== > We take a responsible approach to doing our job. > We have probably downloaded a lot of personal information from your servers, and could > cause you HUGE problems by publishing it. # Documents such as payroll, statements, contracts and others may contain valuable data, # the publication of which could lead to lawsuits. >======================================================================================== (??WILL THE POLICE HELP??) >======================================================================================== > DO NOT try to call the police as they will not save you from > publishing your data, nor will they help you get your files back, > they will only ban you from paying. >======================================================================================== (??WHAT IF I TRIED TO TRICK YOU???) >======================================================================================== > DO NOT modify the files, you may damage them and make it so > we can't help you. >======================================================================================== (??WHAT ABOUT THE ANONYMITY??) >======================================================================================== > We create unique links to anonymous chat for each company. > you don't have to worry, all the details of our deal will be kept secret. > We also have alternative ways to contact us if you are worried and do > not want to write in the panel. >======================================================================================== HOW TO CONTACT US: <=> Download Tor Browser (https://www.torproject.org/download) <=> Open it <=> Follow this link: http://mlnmlnnrdhcaddwll4zqvfd2vyqsgtgj473gjoehwna2v4sizdukheyd.onion/chat/f9e1d038b1f5220e888b56e97881937f (Also maybe you would like to visit our blog? Don't be shy!) <=> Blog: http://kyblogtz6k3jtxnjjvluee5ec4g3zcnvyvbgsnq5thumphmqidkt7xid.onion
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http://mlnmlnnrdhcaddwll4zqvfd2vyqsgtgj473gjoehwna2v4sizdukheyd.onion/chat/f9e1d038b1f5220e888b56e97881937f
-
http://kyblogtz6k3jtxnjjvluee5ec4g3zcnvyvbgsnq5thumphmqidkt7xid.onion
Targets
-
- Target 4ed176edb75ae2114cda8cfb3f83ac2ecdc4476fa1ef30ad8c81a54c0a223a29.exe
- Size 1.8MB
- SHA256 4ed176edb75ae2114cda8cfb3f83ac2ecdc4476fa1ef30ad8c81a54c0a223a29
- MD5 18498b1ff111ee9d9a037c280f75b720
- SHA1 0e9a47782e39741a2c161bf639252d33ad3a428a
- SHA512 c578122532d223d55a752f89bc72a22127e791d967728cbd527df54cd5aac1471642183aa4a29f310646679eb753919a2ac02b9b51437bb504dd48e24211d80a
- SSDEEP 24576:jZgTpNZ+WIp82mx6gq+Jn5tNj32+t40VzQJSGR8cknOuP3S+hpDTFMs2UWz7vs75:WbnbdG+t40VzMSGR8zdpDTKs2N7YJlF
- MD5 SHA1 SHA512 SSDEEP
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit
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Renames multiple (2666) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
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Credentials from Password Stores: Windows Credential Manager
Suspicious access to Credentials History.
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Drops startup file
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Drops file in System32 directory
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Active Setup
1Event Triggered Execution
1Component Object Model Hijacking
1Privilege Escalation
Boot or Logon Autostart Execution
1Active Setup
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2