Analysis
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max time kernel
150s -
max time network
67s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
18-05-2021 07:04
Static task
static1
Behavioral task
behavioral1
Sample
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe
Resource
win10v20210408
General
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Target
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe
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Size
1.0MB
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MD5
3ce026a6481a75d4daa1d276509352ee
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SHA1
f04b84c1f9da9c5dbe76af1089ab603d89f2c520
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SHA256
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb
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SHA512
797818ee9838b5aa04665c4109d2f2f273e4ee40252709a62a4a18a05b583f985368ed2c53d6e37bd31ee0f929e1f14a9e603442ea63998bdc1bf5c7bf306f4a
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe -
Drops file in Drivers directory 2 IoCs
Processes:
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exedescription ioc process File created C:\Windows\SysWOW64\drivers\spools.exe 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened for modification C:\Windows\SysWOW64\drivers\spools.exe 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe -
Sets service image path in registry 2 TTPs
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Adds Run key to start application 2 TTPs 4 IoCs
Processes:
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe -
Enumerates connected drives 3 TTPs 20 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exedescription ioc process File opened (read-only) \??\O: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\H: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\K: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\L: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\M: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\T: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\E: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\F: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\G: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\V: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\U: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\X: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\I: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\N: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\S: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\R: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\W: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\J: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\P: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe File opened (read-only) \??\Q: 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe -
Installs/modifies Browser Helper Object 2 TTPs
BHOs are DLL modules which act as plugins for Internet Explorer.
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Modifies WinLogon 2 TTPs 1 IoCs
Processes:
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe -
Modifies registry class 1 IoCs
Processes:
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exedescription pid process target process PID 1100 wrote to memory of 1144 1100 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe reg.exe PID 1100 wrote to memory of 1144 1100 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe reg.exe PID 1100 wrote to memory of 1144 1100 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe reg.exe PID 1100 wrote to memory of 1144 1100 6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe reg.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe"C:\Users\Admin\AppData\Local\Temp\6a58109323c692f2addda16c62c5827ae7cd000dae829f8374fc71bce481a7bb.exe"1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Drops file in Drivers directory
- Adds Run key to start application
- Enumerates connected drives
- Modifies WinLogon
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f2⤵