General
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Target
test.exe
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Size
1.1MB
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Sample
241225-cebp1stnfx
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MD5
bc78307b49282fd1039a09c88f5e57d9
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SHA1
56ca25bc143ec38871fa5e96561437755a9d0de9
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SHA256
06918af465e607aa81a46042c24e6a8c45d7c983f33ee621caad6b25464dd27a
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SHA512
af4d43f05b3583d07fb96e0815bcc5624e7e3eb110981a21ff82ec07829bcdfd3d23c7de1b673a41bfb41ac20614f27a28389aed80f75a4399c52b351ba5b5f5
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SSDEEP
24576:u4s+oT+NXBLi0rjFXvyHBlbmCZa8Ch1972J1+i3DO2gik:uioT+NXVFjxvMBlbmya8CF4TO2K
Static task
static1
Behavioral task
behavioral1
Sample
test.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
test.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
test.exe
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Size
1.1MB
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MD5
bc78307b49282fd1039a09c88f5e57d9
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SHA1
56ca25bc143ec38871fa5e96561437755a9d0de9
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SHA256
06918af465e607aa81a46042c24e6a8c45d7c983f33ee621caad6b25464dd27a
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SHA512
af4d43f05b3583d07fb96e0815bcc5624e7e3eb110981a21ff82ec07829bcdfd3d23c7de1b673a41bfb41ac20614f27a28389aed80f75a4399c52b351ba5b5f5
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SSDEEP
24576:u4s+oT+NXBLi0rjFXvyHBlbmCZa8Ch1972J1+i3DO2gik:uioT+NXVFjxvMBlbmya8CF4TO2K
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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 (10388) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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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