General
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Target
testing.exe
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Size
1.1MB
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Sample
241225-q5q5aavjct
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MD5
9bab6ed20e3975cec860894d96f1de7c
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SHA1
b4647855c5f313fadc03347ea10272fda260dd22
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SHA256
368041501211167866ce2f39dfd64e596707763d2c9e448565e28d92c649aa71
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SHA512
14c5d8c19429aebfc5ed678d56de3b3d53e2272eda11567d85723933bbca600e00eeb52e5562278c67b08ac87b6c1bc45b6dc8b653a8d545d1edd8c8aa78432a
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SSDEEP
24576:tImw98okVgela0as5CqLVO7XJCjkD3N0HRA:DL5ljasaU
Static task
static1
Behavioral task
behavioral1
Sample
testing.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
testing.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
testing.exe
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Size
1.1MB
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MD5
9bab6ed20e3975cec860894d96f1de7c
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SHA1
b4647855c5f313fadc03347ea10272fda260dd22
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SHA256
368041501211167866ce2f39dfd64e596707763d2c9e448565e28d92c649aa71
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SHA512
14c5d8c19429aebfc5ed678d56de3b3d53e2272eda11567d85723933bbca600e00eeb52e5562278c67b08ac87b6c1bc45b6dc8b653a8d545d1edd8c8aa78432a
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SSDEEP
24576:tImw98okVgela0as5CqLVO7XJCjkD3N0HRA:DL5ljasaU
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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 (10383) 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