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Analysis
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max time kernel
143s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
24/08/2023, 18:04
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
Karlson.exe
Resource
win10v2004-20230703-en
3 signatures
150 seconds
General
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Target
Karlson.exe
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Size
635KB
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MD5
883bffe32454c48a5881ece54d4b5b3c
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SHA1
fd1b54f0104ee4b41484fd61834dac685ec71c18
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SHA256
b220af136b7ca77b63be6614d19fad59b2321e422e16bc5114ee92a4d8a2bf46
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SHA512
4e0d662b1dedff6b493126443b6c23cd84bb143cdbb367f05d236e154af6fdcbca2cc12b86def40ca010f5088d35ffd3e48e9302dd62f9fbfb9e702a97363c5e
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SSDEEP
12288:57qTU6jXQDBJXDjBY07AYMMMMMFE3K/qO8:RqRjXMBJXDjBY07/MMMMMi+qO8
Score
10/10
Malware Config
Signatures
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Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0" SystemPropertiesPerformance.exe -
Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" SystemPropertiesPerformance.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000_Classes\Local Settings explorer.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Karlson.exe"C:\Users\Admin\AppData\Local\Temp\Karlson.exe"1⤵PID:4332
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C:\Windows\system32\SystemPropertiesPerformance.exe"C:\Windows\system32\SystemPropertiesPerformance.exe"1⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
PID:1792
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:3208
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵
- Modifies registry class
PID:4496