Analysis
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max time kernel
151s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 19:12
Static task
static1
Behavioral task
behavioral1
Sample
fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe
Resource
win10v2004-20220812-en
General
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Target
fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe
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Size
669KB
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MD5
4bf1521ed6112feb176f9b6907f2c96b
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SHA1
0a66dacbf5cb0e230c52fd0229af9f64002d4f3c
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SHA256
fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c
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SHA512
bbae3e6b0cac75866b2bc34dc19f60dbce03aba48de10df6edce644c2cac1add84579c3d3fc33f2e53009413ba94c790bd6c58f2d9678007a09d8630b5df957c
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SSDEEP
12288:tRMQmWIW9rQzgyx+ec3Ed4D/enUaRRVLgWTvoCd/Zk:oW6Mk+D3Ed4Qh
Malware Config
Signatures
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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\v2t6bIXtK.lnk fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RZRSYNAPSE = "C:\\Users\\Admin\\AppData\\Roaming\\Razer\\RazerComms5.5.14.exe" RegAsm.exe -
Drops desktop.ini file(s) 2 IoCs
description ioc Process File created C:\Windows\assembly\Desktop.ini RegAsm.exe File opened for modification C:\Windows\assembly\Desktop.ini RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3700 set thread context of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80 -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\assembly RegAsm.exe File created C:\Windows\assembly\Desktop.ini RegAsm.exe File opened for modification C:\Windows\assembly\Desktop.ini RegAsm.exe -
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 4 IoCs
pid Process 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4764 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe Token: SeDebugPrivilege 4764 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4764 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3700 wrote to memory of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80 PID 3700 wrote to memory of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80 PID 3700 wrote to memory of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80 PID 3700 wrote to memory of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80 PID 3700 wrote to memory of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80 PID 3700 wrote to memory of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80 PID 3700 wrote to memory of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80 PID 3700 wrote to memory of 4764 3700 fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe"C:\Users\Admin\AppData\Local\Temp\fe4c008464e7f99279ab099192ef803de60c31605b240a7a6497d2bc8809cc8c.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3700 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4764
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