Analysis
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max time kernel
163s -
max time network
180s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
01-01-2024 10:00
Static task
static1
Behavioral task
behavioral1
Sample
3c8f6cfa9f10104a5187a1c026df2393.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
3c8f6cfa9f10104a5187a1c026df2393.exe
Resource
win10v2004-20231215-en
General
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Target
3c8f6cfa9f10104a5187a1c026df2393.exe
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Size
68KB
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MD5
3c8f6cfa9f10104a5187a1c026df2393
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SHA1
67bcbe17f9e37c151e9a42ad8a1f357c0a033c51
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SHA256
9aadd5825124d75c1e4fb4090c0062f8e1b2ad239f606ead39bf483e6eebdcac
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SHA512
008c1dcdbc4d46820ee8b1fa89f4b94bb5fb3ff79e2f0d72a6fee02c10cffcc73882f3cc991d03c04265e737a780d55817719f5643ec3ef9525ffef2585fc167
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SSDEEP
768:NjcVhWSr8szyJBXUkyzf0/wuArfYwOM1H2dtcPVON1ykhcTga4yfKbNgzdr5qglD:i4lJBXpd/nArfY3M+Py/Cc3ValvnRCj
Malware Config
Signatures
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Modifies firewall policy service 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile 3c8f6cfa9f10104a5187a1c026df2393.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications 3c8f6cfa9f10104a5187a1c026df2393.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\M-10-5364-2978-3464\winmgr.exe = "C:\\Users\\Admin\\M-10-5364-2978-3464\\winmgr.exe:*:Enabled:Microsoft® Windows Manager" 3c8f6cfa9f10104a5187a1c026df2393.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List 3c8f6cfa9f10104a5187a1c026df2393.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 3c8f6cfa9f10104a5187a1c026df2393.exe -
Executes dropped EXE 2 IoCs
pid Process 4064 winmgr.exe 3596 winmgr.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft® Windows Manager = "C:\\Users\\Admin\\M-10-5364-2978-3464\\winmgr.exe" 3c8f6cfa9f10104a5187a1c026df2393.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 5004 set thread context of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 4064 set thread context of 3596 4064 winmgr.exe 103 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000_Classes\.tmp winmgr.exe Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000_Classes\.tmp\ = "exefile" winmgr.exe Key created \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000_Classes\.tmp 3c8f6cfa9f10104a5187a1c026df2393.exe Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000_Classes\.tmp\ = "exefile" 3c8f6cfa9f10104a5187a1c026df2393.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 3c8f6cfa9f10104a5187a1c026df2393.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 5004 wrote to memory of 1028 5004 3c8f6cfa9f10104a5187a1c026df2393.exe 90 PID 1028 wrote to memory of 4064 1028 3c8f6cfa9f10104a5187a1c026df2393.exe 102 PID 1028 wrote to memory of 4064 1028 3c8f6cfa9f10104a5187a1c026df2393.exe 102 PID 1028 wrote to memory of 4064 1028 3c8f6cfa9f10104a5187a1c026df2393.exe 102 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103 PID 4064 wrote to memory of 3596 4064 winmgr.exe 103
Processes
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C:\Users\Admin\AppData\Local\Temp\3c8f6cfa9f10104a5187a1c026df2393.exe"C:\Users\Admin\AppData\Local\Temp\3c8f6cfa9f10104a5187a1c026df2393.exe"1⤵
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5004 -
C:\Users\Admin\AppData\Local\Temp\3c8f6cfa9f10104a5187a1c026df2393.exe"C:\Users\Admin\AppData\Local\Temp\3c8f6cfa9f10104a5187a1c026df2393.exe"2⤵
- Modifies firewall policy service
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1028 -
C:\Users\Admin\M-10-5364-2978-3464\winmgr.exe"C:\Users\Admin\M-10-5364-2978-3464\winmgr.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4064 -
C:\Users\Admin\M-10-5364-2978-3464\winmgr.exe"C:\Users\Admin\M-10-5364-2978-3464\winmgr.exe"4⤵
- Executes dropped EXE
PID:3596
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
68KB
MD53c8f6cfa9f10104a5187a1c026df2393
SHA167bcbe17f9e37c151e9a42ad8a1f357c0a033c51
SHA2569aadd5825124d75c1e4fb4090c0062f8e1b2ad239f606ead39bf483e6eebdcac
SHA512008c1dcdbc4d46820ee8b1fa89f4b94bb5fb3ff79e2f0d72a6fee02c10cffcc73882f3cc991d03c04265e737a780d55817719f5643ec3ef9525ffef2585fc167