Analysis
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max time kernel
173s -
max time network
199s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
11-02-2022 06:36
Static task
static1
Behavioral task
behavioral1
Sample
b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe
Resource
win10v2004-en-20220112
General
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Target
b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe
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Size
115KB
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MD5
ea469ffdeb5e04efbc225017500f4d4c
-
SHA1
bde1e9e537081757c864d2ad50007bf1cb928849
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SHA256
b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1
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SHA512
487d419811a2aec7e5b3a154590d696eb7e2626f014ebea5feaa7c50bf4b0f276d860243c5bcf5e380a8f97232b5a595a6a1dc434dd55cc395389c915bcda94f
Malware Config
Extracted
C:\how_to_back_files.html
Signatures
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\BrowserUpdateCheck = "C:\\Users\\Admin\\AppData\\Local\\b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe" b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe Key created \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe -
Drops desktop.ini file(s) 9 IoCs
description ioc Process File opened for modification C:\Users\Public\Pictures\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe File opened for modification C:\Users\Public\Libraries\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe File opened for modification C:\Users\Public\Documents\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe File opened for modification C:\Users\Public\AccountPictures\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe File opened for modification C:\Users\Public\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe File opened for modification C:\Users\Public\Videos\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe File opened for modification C:\Users\Public\Desktop\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe File opened for modification C:\Users\Public\Music\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe File opened for modification C:\Users\Public\Downloads\desktop.ini b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 MusNotifyIcon.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotifyIcon.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe"C:\Users\Admin\AppData\Local\Temp\b59c1e665e2a6cd43c8e906239b6b5991f1205bc5298a9131384953be4a484a1.exe"1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
PID:3896
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:3696