Analysis
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max time kernel
432s -
max time network
436s -
platform
windows11-21h2_x64 -
resource
win11-20250313-en -
resource tags
arch:x64arch:x86image:win11-20250313-enlocale:en-usos:windows11-21h2-x64system -
submitted
24/03/2025, 08:54
Behavioral task
behavioral1
Sample
Skibidilockerv2.exe
Resource
win11-20250313-en
General
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Target
Skibidilockerv2.exe
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Size
321KB
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MD5
c50efd728b3a484b6c660c8651ece69f
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SHA1
8745db2bd87a04865ddbbf06f612d5ef14cc1e2a
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SHA256
a0e8e63d715768306c63b2e62497f857fc83ca71099b5a3c30719087a6de477f
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SHA512
9d06c092ae1a8900f7d8fa6041142c7105bcda06b2971645eb72594bd38458cd58986563977128a68ace2be2b58de28b361b489a5ee9e7bbfe3b5401940eaaea
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SSDEEP
6144:gr9Sfaqx+fiNg8xG2KKmQv8tU6zZHm6Eo2W7GfF03zK2Ht3gl3ZLk7P14P:BaqUaNg8xGrKmQv8tU6zZHm6EiaFWzpW
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
chaos
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral1/memory/4052-1-0x0000000000A80000-0x0000000000AD6000-memory.dmp family_chaos behavioral1/files/0x001c00000002af75-6.dat family_chaos -
Chaos family
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Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 224 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1136229799-3442283115-138161576-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1136229799-3442283115-138161576-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\jcaltgirf.jpg" svchost.exe -
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-1-5-21-1136229799-3442283115-138161576-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3040 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 224 svchost.exe -
Suspicious behavior: EnumeratesProcesses 39 IoCs
pid Process 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 4052 Skibidilockerv2.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe 224 svchost.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4052 Skibidilockerv2.exe Token: SeDebugPrivilege 224 svchost.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4052 wrote to memory of 224 4052 Skibidilockerv2.exe 82 PID 4052 wrote to memory of 224 4052 Skibidilockerv2.exe 82 PID 224 wrote to memory of 3040 224 svchost.exe 83 PID 224 wrote to memory of 3040 224 svchost.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\Skibidilockerv2.exe"C:\Users\Admin\AppData\Local\Temp\Skibidilockerv2.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4052 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:224 -
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:3040
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
321KB
MD5c50efd728b3a484b6c660c8651ece69f
SHA18745db2bd87a04865ddbbf06f612d5ef14cc1e2a
SHA256a0e8e63d715768306c63b2e62497f857fc83ca71099b5a3c30719087a6de477f
SHA5129d06c092ae1a8900f7d8fa6041142c7105bcda06b2971645eb72594bd38458cd58986563977128a68ace2be2b58de28b361b489a5ee9e7bbfe3b5401940eaaea
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740