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Analysis
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max time kernel
142s -
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
22/11/2022, 07:51
Static task
static1
Behavioral task
behavioral1
Sample
73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe
Resource
win10v2004-20220812-en
General
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Target
73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe
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Size
21KB
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MD5
4fa9e799040df3b7131e264b32a8cfd6
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SHA1
770c5c1d01677afca31515a9a9bbe520f41a1060
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SHA256
73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349
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SHA512
64dc76b9cc0dd42094db0621d369c252e7e06f431f5ee2d5d5a8041db544700f89897aea4f9c031da7a62156b2835b311a6c56d1e6a359083576b8719f9b8f18
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SSDEEP
384:OGLvGoN8npeUWozguegkwZNDI3ku6ZRpesDuxqQ:Xvinpe3tgkmdEl0LKxx
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Zxtsqjwh = "\"C:\\Users\\Admin\\AppData\\Roaming\\Bmcnu\\Zxtsqjwh.exe\"" 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4972 set thread context of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 4240 powershell.exe 4240 powershell.exe 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe Token: SeDebugPrivilege 4240 powershell.exe Token: SeDebugPrivilege 4236 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4972 wrote to memory of 4240 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 81 PID 4972 wrote to memory of 4240 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 81 PID 4972 wrote to memory of 4240 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 81 PID 4972 wrote to memory of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84 PID 4972 wrote to memory of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84 PID 4972 wrote to memory of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84 PID 4972 wrote to memory of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84 PID 4972 wrote to memory of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84 PID 4972 wrote to memory of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84 PID 4972 wrote to memory of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84 PID 4972 wrote to memory of 4236 4972 73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe"C:\Users\Admin\AppData\Local\Temp\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4972 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANAA1AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4240
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C:\Users\Admin\AppData\Local\Temp\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exeC:\Users\Admin\AppData\Local\Temp\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4236
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe.log
Filesize1KB
MD5e87e48b105757e1c7563d1c719059733
SHA128a3f2b2e0672da2b531f4757d2b20b53032dafc
SHA2560aaf22dc84cc3fcfe53de7ccfed8e662247dfb7f1a9967032c88790d0c663461
SHA512bf19c5743143aee914a453c41189c722c9b90a5b8bf299cecf3e1f97656d32cd209ecb74da8aebc89bb41c27d189f73aaaabbc64fe383410c95dc76ad4218968