Analysis
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max time kernel
150s -
max time network
127s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
18-05-2021 09:50
Static task
static1
Behavioral task
behavioral1
Sample
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe
Resource
win10v20210410
General
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Target
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe
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Size
401KB
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MD5
0fd3dbe352cfd1938160279739ea3e2c
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SHA1
3a962de29533f945f8fbecc9830085850c667b91
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SHA256
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a
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SHA512
b818d669c54e1e77f8388da48442993859ad29ff0388cfb480f4077135318abd2a87ebd6d0455c09c7e8547001ed0363dbe88bf4a5d9493fc4a434fb001a5629
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe -
Drops file in Drivers directory 2 IoCs
Processes:
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exedescription ioc process File opened for modification C:\Windows\SysWOW64\drivers\spools.exe 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe File created C:\Windows\SysWOW64\drivers\spools.exe 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe -
Sets service image path in registry 2 TTPs
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Adds Run key to start application 2 TTPs 4 IoCs
Processes:
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.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:
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe -
Modifies registry class 1 IoCs
Processes:
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exedescription pid process target process PID 1808 wrote to memory of 3324 1808 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe reg.exe PID 1808 wrote to memory of 3324 1808 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe reg.exe PID 1808 wrote to memory of 3324 1808 6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe reg.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.exe"C:\Users\Admin\AppData\Local\Temp\6c3ecd20c787e6e63a5afbbc79b1fae9cf975acb2cd200db986c43e3b315d66a.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⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/3324-114-0x0000000000000000-mapping.dmp