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Analysis
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max time kernel
47s -
max time network
74s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
11/10/2022, 22:54
Behavioral task
behavioral1
Sample
efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe
Resource
win10v2004-20220812-en
General
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Target
efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe
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Size
153KB
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MD5
6910a1247c6f7838dfcf6e6679f73921
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SHA1
db5214cba33a029c9f8ed81d51aea0012c1e46a8
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SHA256
efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f
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SHA512
597ca1afb357b2c8aaee52e354dc9933c8f95bc050b07002b2ca47768ddda233cb4f0aa65b9af531fd154780de7c5f127893c75c1eb5d9fe3a99762296e48508
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SSDEEP
3072:aOLwcn/j/z/xWikNEPhFsV5D6SSKgU5B1+uPf+LPBmirQv/:aOLwcn/rzXbsVl6SSKgUvPeB5
Malware Config
Signatures
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resource yara_rule behavioral1/memory/1552-55-0x0000000001000000-0x000000000104F000-memory.dmp upx behavioral1/memory/1552-57-0x0000000001000000-0x000000000104F000-memory.dmp upx -
Drops file in System32 directory 3 IoCs
description ioc Process File opened for modification \??\c:\windows\SysWOW64\svchost.exe efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe File created \??\c:\windows\SysWOW64\svchost.vir efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe File opened for modification \??\c:\windows\SysWOW64\alg.exe efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification \??\c:\windows\microsoft.net\framework64\v4.0.30319\aspnet_state.exe efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 12 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf\Content Type = "text/x-vcard" efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\ = "vCard File" efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\" /vcard %1" efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard\Extension = ".vcf" efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.wab efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf\ = "vcard_wab_auto_file" efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\",1" efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeTakeOwnershipPrivilege 1552 efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe"C:\Users\Admin\AppData\Local\Temp\efb3de3f48d434481f20d380448c4c592b85a27a08ed5676ceb5c55efce51a6f.exe"1⤵
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
PID:1552