Analysis
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max time kernel
151s -
max time network
65s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
15-05-2021 11:43
Static task
static1
Behavioral task
behavioral1
Sample
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe
Resource
win10v20210410
General
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Target
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe
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Size
422KB
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MD5
3d75142ef2b8f2ea07efb85d99e72610
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SHA1
d4be52a1d0ab8198aa1e007b8252dbb147fd070a
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SHA256
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda
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SHA512
491b18106202c86d0bcaea73c18e7bcfe97eaaa7ebe63c35b1dacb6f672053af7fd0db68e5f868b8c5278576a5436133020057f38c6aab40728597d3acb2e4d3
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe -
Drops file in Drivers directory 2 IoCs
Processes:
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exedescription ioc process File created C:\Windows\SysWOW64\drivers\spools.exe 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe File opened for modification C:\Windows\SysWOW64\drivers\spools.exe 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe -
Sets service image path in registry 2 TTPs
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Adds Run key to start application 2 TTPs 4 IoCs
Processes:
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.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:
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe -
Modifies registry class 1 IoCs
Processes:
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exedescription pid process target process PID 1916 wrote to memory of 1356 1916 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe reg.exe PID 1916 wrote to memory of 1356 1916 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe reg.exe PID 1916 wrote to memory of 1356 1916 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe reg.exe PID 1916 wrote to memory of 1356 1916 7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe reg.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe"C:\Users\Admin\AppData\Local\Temp\7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe"1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Drops file in Drivers directory
- Adds Run key to start application
- 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⤵