Analysis
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max time kernel
107s -
max time network
191s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
27-09-2021 18:19
Behavioral task
behavioral1
Sample
f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe
Resource
win7v20210408
0 signatures
0 seconds
General
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Target
f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe
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Size
535KB
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MD5
3f9a8ee266de6359f15b00036d5f68de
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SHA1
a4da83900d535107af9d3002da17304e90f82d98
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SHA256
f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c
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SHA512
1e701f93913d71486c547b93f7df649a041764d8064075d6e96633126eb91d9f91800ceaf0a7bf2ba2c9709713abe4793cb1c01e15cad4f664c0d64af7396843
Score
10/10
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\DefenderCheckUpdate = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe\"" f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 2 ip-api.com -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1624 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1540 f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe Token: SeDebugPrivilege 1540 f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1540 f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1540 wrote to memory of 1624 1540 f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe 28 PID 1540 wrote to memory of 1624 1540 f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe 28 PID 1540 wrote to memory of 1624 1540 f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe 28 PID 1540 wrote to memory of 1624 1540 f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe"C:\Users\Admin\AppData\Local\Temp\f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe"1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1540 -
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "DefenderCheckUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\f5f3e9b43eec8bff47679ea02aec02edb979051e5fe21cc0f2bf6c919d10c49c.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
PID:1624
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