General
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Target
b774e9f49d4aa8a2a009d06a6cdb6f8a_JaffaCakes118
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Size
396KB
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Sample
241202-h41nbszrcq
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MD5
b774e9f49d4aa8a2a009d06a6cdb6f8a
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SHA1
5eaf1e24c495634ecbf7c81b640d10de8a3399d2
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SHA256
d3aef7ccd94c55c75a19d3ac6e31ac4af1cfcdd64e77be9afc4e5c8de9301686
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SHA512
b1cdb65dd44aefae7933944a824faac70b1fe68267e245a3a1181deda7b8cb9016e502550cd73974b3fd85756602193d4db8a23e9f3622d0ed5c59a780b1aecf
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SSDEEP
6144:CT3WR0F1lDPR+bJnm/jtowhxZWVrfQwBcTMMG26uw6fyQ7Q:CT3MA+bJmy4ZKfQRMh6
Static task
static1
Behavioral task
behavioral1
Sample
b774e9f49d4aa8a2a009d06a6cdb6f8a_JaffaCakes118.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
b774e9f49d4aa8a2a009d06a6cdb6f8a_JaffaCakes118.exe
Resource
win10v2004-20241007-en
Malware Config
Extracted
C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\Recovery+actia.txt
teslacrypt
http://tt54rfdjhb34rfbnknaerg.milerteddy.com/DC47193B5203DDE
http://kkd47eh4hdjshb5t.angortra.at/DC47193B5203DDE
http://ytrest84y5i456hghadefdsd.pontogrot.com/DC47193B5203DDE
http://xlowfznrg4wf7dli.ONION/DC47193B5203DDE
Extracted
C:\Program Files\7-Zip\Lang\Recovery+qrkjg.txt
teslacrypt
http://tt54rfdjhb34rfbnknaerg.milerteddy.com/219CC282FBE275E0
http://kkd47eh4hdjshb5t.angortra.at/219CC282FBE275E0
http://ytrest84y5i456hghadefdsd.pontogrot.com/219CC282FBE275E0
http://xlowfznrg4wf7dli.ONION/219CC282FBE275E0
Targets
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Target
b774e9f49d4aa8a2a009d06a6cdb6f8a_JaffaCakes118
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Size
396KB
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MD5
b774e9f49d4aa8a2a009d06a6cdb6f8a
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SHA1
5eaf1e24c495634ecbf7c81b640d10de8a3399d2
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SHA256
d3aef7ccd94c55c75a19d3ac6e31ac4af1cfcdd64e77be9afc4e5c8de9301686
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SHA512
b1cdb65dd44aefae7933944a824faac70b1fe68267e245a3a1181deda7b8cb9016e502550cd73974b3fd85756602193d4db8a23e9f3622d0ed5c59a780b1aecf
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SSDEEP
6144:CT3WR0F1lDPR+bJnm/jtowhxZWVrfQwBcTMMG26uw6fyQ7Q:CT3MA+bJmy4ZKfQRMh6
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TeslaCrypt, AlphaCrypt
Ransomware based on CryptoLocker. Shut down by the developers in 2016.
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Teslacrypt family
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (390) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Deletes itself
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Drops startup file
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Executes dropped EXE
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Adds Run key to start application
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Indicator Removal: File Deletion
Adversaries may delete files left behind by the actions of their intrusion activity.
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Indicator Removal
2File Deletion
2Modify Registry
4Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1