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Analysis
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max time kernel
132s -
max time network
103s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
20/05/2024, 00:48
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe
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Size
6.8MB
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MD5
a9a63c5bc997dbef46f861e8b9a7acd3
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SHA1
56e88313fcdc511640445e39faea49c41668ef4f
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SHA256
99fb7c14ed606ca4dcfe80f7da538cd28f2ccad280c66b0c40212ec6cdcc1875
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SHA512
aac19f2f6a33a50cb8909f9d0c6fd06804b218447c20a836a0e1deedb67f4f8d25aa9a5e5d3b686a07bccb457ef79be99cf2b1d93eee7fb0e8da850a72a60ff4
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SSDEEP
98304:H9rOvi3HzBvnKFn0MeYttysOx6VamqSJ5a4f+Wb/Ls:drOvijBGnBeYtAX+q05aW+Eo
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 1180 2800 WerFault.exe 82 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe = "11001" 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe Token: SeIncreaseQuotaPrivilege 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe Token: SeIncreaseQuotaPrivilege 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe Token: SeIncreaseQuotaPrivilege 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe Token: SeIncreaseQuotaPrivilege 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe Token: SeIncreaseQuotaPrivilege 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe 2800 2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-20_a9a63c5bc997dbef46f861e8b9a7acd3_avoslocker.exe"1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2800 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2800 -s 23682⤵
- Program crash
PID:1180
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2800 -ip 28001⤵PID:3356
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.2MB
MD5698687ac9e653b2c7a1b0d2a2ec40505
SHA1ad6959510eff569cff355f2ac4c5988a6d6a433e
SHA256142db397e43384d0af407ad59ed5b64371cf054b7645913592ca72d2d848c1c9
SHA51229c5971005bac00173c96bc3b7ffc4fd5701d2f7ff5a29fc05bd8832ff2b1c850903ebed72baa6e4bbcaa0c6b14670ba1e59d900f3087c0fdb0453bea5d150eb
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Filesize
426B
MD5a28ab17b18ff254173dfeef03245efd0
SHA1c6ce20924565644601d4e0dd0fba9dde8dea5c77
SHA256886c0ab69e6e9d9d5b5909451640ea587accfcdf11b8369cad8542d1626ac375
SHA5129371a699921b028bd93c35f9f2896d9997b906c8aba90dd4279abba0ae1909a8808a43bf829584e552ccfe534b2c991a5a7e3e3de7618343f50b1c47cff269d6