General
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Target
Fast.ex_.exe
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Size
56KB
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Sample
231004-j9jsfacb26
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MD5
85f25d227ff80bfe9fb07eedcf831c50
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SHA1
99740958fa077db80051ff8243a58b38b9287ee7
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SHA256
8575dcf7c67612b4d1fc1315bb19318f06bb5abdc6341890e251eb303e386db7
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SHA512
db453f931f767cd377b2afe0782410ec5766ac8d96d33a64efc9a2723835b7062edca9b8a07c5632bafd00f605c9ac955bbaa2aead706e398a46010de9caad5c
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SSDEEP
1536:RNeRBl5PT/rx1mzwRMSTdLpJauhIvnbVz9K:RQRrmzwR5J/hWnhJ
Static task
static1
Behavioral task
behavioral1
Sample
Fast.ex_.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Fast.ex_.exe
Resource
win10v2004-20230915-en
Malware Config
Extracted
C:\info.hta
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\info.hta
Extracted
C:\info.hta
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\info.hta
Targets
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Target
Fast.ex_.exe
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Size
56KB
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MD5
85f25d227ff80bfe9fb07eedcf831c50
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SHA1
99740958fa077db80051ff8243a58b38b9287ee7
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SHA256
8575dcf7c67612b4d1fc1315bb19318f06bb5abdc6341890e251eb303e386db7
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SHA512
db453f931f767cd377b2afe0782410ec5766ac8d96d33a64efc9a2723835b7062edca9b8a07c5632bafd00f605c9ac955bbaa2aead706e398a46010de9caad5c
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SSDEEP
1536:RNeRBl5PT/rx1mzwRMSTdLpJauhIvnbVz9K:RQRrmzwR5J/hWnhJ
Score10/10-
Modifies boot configuration data using bcdedit
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Renames multiple (311) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Renames multiple (468) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Modifies Windows Firewall
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Adds Run key to start application
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Drops desktop.ini file(s)
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1