Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
04-12-2022 14:52
Static task
static1
Behavioral task
behavioral1
Sample
d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exe
Resource
win7-20221111-en
General
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Target
d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exe
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Size
37KB
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MD5
ec2c3adc5d23220b641a492f40139185
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SHA1
139036b52b605733756a0cf04db7a007abd7c978
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SHA256
d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33
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SHA512
12310959bc8a18aba59af845b98b02c66c1db19961794e65653ff46711d4df9418fb8815fcc27d59d7c9b389e36508025b6aa0b7af65778da483a25cbb538593
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SSDEEP
768:shDpcmvSmmlm/16RhJdcnfxxxxxFOTeS/ekU+QSta58bsap5wFn8iFJzul6rwZ:mKmmlm/cXJdcHkU+QS3/p5wFn8iF26rk
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
WindowsUpdate.exepid process 3876 WindowsUpdate.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
WindowsUpdate.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" WindowsUpdate.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WindowsUpdate.exedescription pid process Token: SeDebugPrivilege 3876 WindowsUpdate.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
WindowsUpdate.exepid process 3876 WindowsUpdate.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exedescription pid process target process PID 2220 wrote to memory of 3876 2220 d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exe WindowsUpdate.exe PID 2220 wrote to memory of 3876 2220 d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exe WindowsUpdate.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exe"C:\Users\Admin\AppData\Local\Temp\d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\WindowsUpdate.exe"C:\Users\Admin\AppData\Roaming\WindowsUpdate.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\WindowsUpdate.exeFilesize
37KB
MD5ec2c3adc5d23220b641a492f40139185
SHA1139036b52b605733756a0cf04db7a007abd7c978
SHA256d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33
SHA51212310959bc8a18aba59af845b98b02c66c1db19961794e65653ff46711d4df9418fb8815fcc27d59d7c9b389e36508025b6aa0b7af65778da483a25cbb538593
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C:\Users\Admin\AppData\Roaming\WindowsUpdate.exeFilesize
37KB
MD5ec2c3adc5d23220b641a492f40139185
SHA1139036b52b605733756a0cf04db7a007abd7c978
SHA256d815e19001ebfa5ca5d24aa83a26f33ae886e18ef663da095ed04d37c0d7ce33
SHA51212310959bc8a18aba59af845b98b02c66c1db19961794e65653ff46711d4df9418fb8815fcc27d59d7c9b389e36508025b6aa0b7af65778da483a25cbb538593
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memory/2220-133-0x00007FFE4D6F0000-0x00007FFE4E126000-memory.dmpFilesize
10.2MB
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memory/3876-134-0x0000000000000000-mapping.dmp
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memory/3876-137-0x00007FFE4D6F0000-0x00007FFE4E126000-memory.dmpFilesize
10.2MB