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Overview
overview
10Static
static
3Readme/Info.txt
windows11-21h2-x64
3Readme/readme+.txt
windows11-21h2-x64
3Readme/readme.txt
windows11-21h2-x64
3Setup/Offi...86.exe
windows11-21h2-x64
10Setup/Offi...86.exe
windows11-21h2-x64
10Setup/Offi...r+.exe
windows11-21h2-x64
10Setup/Offi...er.exe
windows11-21h2-x64
10Analysis
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max time kernel
8s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
17/05/2024, 17:59
Static task
static1
Behavioral task
behavioral1
Sample
Readme/Info.txt
Resource
win11-20240508-en
Behavioral task
behavioral2
Sample
Readme/readme+.txt
Resource
win11-20240508-en
Behavioral task
behavioral3
Sample
Readme/readme.txt
Resource
win11-20240426-en
Behavioral task
behavioral4
Sample
Setup/Office Installer x86.exe
Resource
win11-20240426-en
Behavioral task
behavioral5
Sample
Setup/Office Installer+ x86.exe
Resource
win11-20240426-en
Behavioral task
behavioral6
Sample
Setup/Office Installer+.exe
Resource
win11-20240419-en
Behavioral task
behavioral7
Sample
Setup/Office Installer.exe
Resource
win11-20240426-en
General
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Target
Readme/Info.txt
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Size
722B
-
MD5
9940932c09e70a60130c0e9c299e5cef
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SHA1
1b7a71e72ce3508969a52be044372d7103593f6c
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SHA256
7cf6f74bf9c32de8ec05c90f088dcaf594c544c4a67061a4aa624946a4aba22a
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SHA512
c8b8bb43840f4b77e4decab115b61ea84328cce76e61a803207c4474c3e138ea63d93dd5ad4bffbae672f7edf3c1d60056ee17fde568d55537607f9e2eec45b3
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 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000_Classes\Local Settings cmd.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3996 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4664 wrote to memory of 3996 4664 cmd.exe 81 PID 4664 wrote to memory of 3996 4664 cmd.exe 81
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\Readme\Info.txt1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4664 -
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\Readme\Info.txt2⤵
- Opens file in notepad (likely ransom note)
PID:3996
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