General
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Target
sex.exe
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Size
1.1MB
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Sample
241228-1ywrasspfy
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MD5
adafab2dac5b7c82b724ee21ef9b9074
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SHA1
79705ff60099779427009651fdb9a86e305dff20
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SHA256
b4589e3b06efe598a5c57d2a93ef9101d91a7be465a7d5aecb2e68b8ed1d0ae7
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SHA512
ec030ba61181ec09a974a1dd41ba5a1b713f157c43dcd2cae44dd78c5fd401afaceddfafb7c88e123d476fc09f3550696b3367083285a58fba5e7ae3116ccb48
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SSDEEP
24576:lImw98okVgela0as5CqLVO7XJCjkD3N0HRA:7L5ljasaU
Static task
static1
Behavioral task
behavioral1
Sample
sex.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
sex.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
sex.exe
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Size
1.1MB
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MD5
adafab2dac5b7c82b724ee21ef9b9074
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SHA1
79705ff60099779427009651fdb9a86e305dff20
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SHA256
b4589e3b06efe598a5c57d2a93ef9101d91a7be465a7d5aecb2e68b8ed1d0ae7
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SHA512
ec030ba61181ec09a974a1dd41ba5a1b713f157c43dcd2cae44dd78c5fd401afaceddfafb7c88e123d476fc09f3550696b3367083285a58fba5e7ae3116ccb48
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SSDEEP
24576:lImw98okVgela0as5CqLVO7XJCjkD3N0HRA:7L5ljasaU
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Avoslocker Ransomware
Avoslocker is a relatively new ransomware, that was observed in late June and early July, 2021.
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Avoslocker family
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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 (10381) 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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Executes dropped EXE
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Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Windows Management Instrumentation
1Defense Evasion
Direct Volume Access
1Indicator Removal
2File Deletion
2Modify Registry
1