Analysis
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max time kernel
144s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 01:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe
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Size
7.4MB
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MD5
d6a9bdec4655857d91e8c20bcf110496
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SHA1
38c28ba1a7e8e57828bec9862c7afbeff94b64f2
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SHA256
03948a654b0c2bc7213610267e39b1b6847f2840ce7ae7d1a055a558004bcff1
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SHA512
1918265cbb86257dcd79c014659624fb409cd585764adea7aaf093ebaa97356ef8a7d9efc7f26914fdae36176f31f48f31f99ba404eecd7a06c6ad1dbf8b5c06
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SSDEEP
98304:S4h5PfhefTAv8HM2JyiFpK6FR4FBm21BgdKqyyHab0AN:X5PfhoAUs2JyEYxBojG
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
Processes:
WerFault.exepid pid_target process target process 4568 4832 WerFault.exe 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe -
Processes:
2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe Set value (int) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe = "11001" 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe -
Suspicious behavior: EnumeratesProcesses 16 IoCs
Processes:
2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exepid process 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
Processes:
2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exedescription pid process Token: SeIncreaseQuotaPrivilege 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe Token: SeIncreaseQuotaPrivilege 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe Token: SeIncreaseQuotaPrivilege 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe Token: SeIncreaseQuotaPrivilege 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe Token: SeIncreaseQuotaPrivilege 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe Token: SeIncreaseQuotaPrivilege 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe Token: SeIncreaseQuotaPrivilege 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe Token: SeIncreaseQuotaPrivilege 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exepid process 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe 4832 2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_d6a9bdec4655857d91e8c20bcf110496_avoslocker.exe"1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4832 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4832 -s 24202⤵
- Program crash
PID:4568
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3752 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:81⤵PID:3804
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4832 -ip 48321⤵PID:2172
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.2MB
MD5fbc34da120e8a3ad11b3ad1404b6c51a
SHA1fe3e36de12e0bdd0a7731e572e862c50ee89207c
SHA2569701b3ba335b5a11be32dd63ea3a466a14e048c1e5881cac81352b459be0f202
SHA512f3f0452d16a7cd0600a8ffced5167783d3f31e51dce512872ade5031c97b14366af0343bfe2c822c8ac4a281f27f5eeb00fe7d0e8cbe90434f79bacf3ecb42d2
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Filesize
426B
MD5a28ab17b18ff254173dfeef03245efd0
SHA1c6ce20924565644601d4e0dd0fba9dde8dea5c77
SHA256886c0ab69e6e9d9d5b5909451640ea587accfcdf11b8369cad8542d1626ac375
SHA5129371a699921b028bd93c35f9f2896d9997b906c8aba90dd4279abba0ae1909a8808a43bf829584e552ccfe534b2c991a5a7e3e3de7618343f50b1c47cff269d6