Analysis
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max time kernel
28s -
max time network
30s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
08-05-2023 13:17
Behavioral task
behavioral1
Sample
Bouwvak 2023.xlsx.attack1
Resource
win7-20230220-en
windows7-x64
Behavioral task
behavioral2
Sample
Bouwvak 2023.xlsx.attack1
Resource
win10v2004-20230220-en
windows10-2004-x64
Behavioral task
behavioral3
Sample
How_to_back_files.html
Resource
win7-20230220-en
windows7-x64
Behavioral task
behavioral4
Sample
How_to_back_files.html
Resource
win10v2004-20230220-en
windows10-2004-x64
Behavioral task
behavioral5
Sample
WEEKPLANNING 2023.docx.attack1
Resource
win7-20230220-en
windows7-x64
Behavioral task
behavioral6
Sample
WEEKPLANNING 2023.docx.attack1
Resource
win10v2004-20230220-en
windows10-2004-x64
General
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Target
Bouwvak 2023.xlsx.attack1
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Size
13KB
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MD5
302df02294aac829e52f5fb98cec7bb5
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SHA1
4ea18208afcb41d3abffc99cd65a148dff9d77a5
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SHA256
c455c3d589a7e55160d252de84775e9499f962b6669a2287cb701560e0f6b5f3
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SHA512
407fc5ad94ab3d54a5cbc7cf816502df14035ffa81c534919882d9b57d8464d4e9fe1d43e928d16108b50694a4d7c406bb2713319ecbffc3a40e8c30af1904e2
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SSDEEP
384:Jd3ymUJMblIBhObKCq1pAW8N8I3k1+/uLdmoMPl:JBlUJLKbK/pAW8KI01+/tZl
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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Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1480 rundll32.exe -
Suspicious use of FindShellTrayWindow 64 IoCs
pid Process 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe 1480 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2044 wrote to memory of 1480 2044 cmd.exe 29 PID 2044 wrote to memory of 1480 2044 cmd.exe 29 PID 2044 wrote to memory of 1480 2044 cmd.exe 29
Processes
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C:\Windows\system32\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\Bouwvak 2023.xlsx.attack1"1⤵
- Suspicious use of WriteProcessMemory
PID:2044 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Bouwvak 2023.xlsx.attack12⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
PID:1480
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