Analysis
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max time kernel
151s -
max time network
74s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
17-05-2021 05:43
Static task
static1
Behavioral task
behavioral1
Sample
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe
Resource
win10v20210410
General
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Target
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe
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Size
611KB
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MD5
0e0fe53bfa36edc1972fcf8374ccdcd6
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SHA1
b53d557a17f8728da751e138802766c1d757216f
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SHA256
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99
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SHA512
caa5fcd0fb665a49142e50c2077e630cb449b236776d7b5ccfcc72aa08a7a4a284966d1d81cb6be87b8a69fb2e526d31e4e9f15572c67cc80da931260d5d3116
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe -
Drops file in Drivers directory 2 IoCs
Processes:
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exedescription ioc process File created C:\Windows\SysWOW64\drivers\spools.exe 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened for modification C:\Windows\SysWOW64\drivers\spools.exe 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe -
Sets service image path in registry 2 TTPs
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Adds Run key to start application 2 TTPs 4 IoCs
Processes:
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.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" 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.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" 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe -
Enumerates connected drives 3 TTPs 20 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exedescription ioc process File opened (read-only) \??\M: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\S: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\T: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\E: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\J: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\N: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\P: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\X: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\I: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\L: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\Q: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\R: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\V: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\W: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\G: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\O: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\K: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\U: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\F: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe File opened (read-only) \??\H: 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.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:
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe -
Modifies registry class 1 IoCs
Processes:
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exedescription pid process target process PID 1936 wrote to memory of 1972 1936 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe reg.exe PID 1936 wrote to memory of 1972 1936 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe reg.exe PID 1936 wrote to memory of 1972 1936 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe reg.exe PID 1936 wrote to memory of 1972 1936 0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe reg.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.exe"C:\Users\Admin\AppData\Local\Temp\0186816c48f06a87b15ab657303f03128f21ecbcd424dc3e4fdebd8298e3be99.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⤵