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Analysis
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max time kernel
151s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
07/11/2022, 20:28
Static task
static1
Behavioral task
behavioral1
Sample
7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe
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Size
192KB
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MD5
01e1479d677fcb6c255b4c5a70aa1680
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SHA1
b573b8d0905ed7cde554d9b74f09846e26c7edd5
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SHA256
7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758
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SHA512
87e9c43f65bbf7a5f66c86cc7372bb64a951ae5cc1957262d65056b5aaba284b1356b18021248f1a5ee9e0361c1528ebfedb545bcce8d34d4977fc09d8e70e29
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SSDEEP
3072:40bLIxdvKuGr7t5qCRFSoRQg/yqY9Kf5L/SV5qK:NiVCRFSoRQPC5L/hK
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yuufek.exe -
Executes dropped EXE 1 IoCs
pid Process 588 yuufek.exe -
Loads dropped DLL 2 IoCs
pid Process 1220 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe 1220 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /l" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /n" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /p" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /x" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /o" yuufek.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /q" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /b" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /k" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /x" 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /f" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /w" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /c" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /d" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /t" yuufek.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /z" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /e" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /u" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /y" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /m" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /v" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /r" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /s" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /j" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /a" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /i" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /g" yuufek.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuufek = "C:\\Users\\Admin\\yuufek.exe /h" yuufek.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1220 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe 588 yuufek.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1220 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe 588 yuufek.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1220 wrote to memory of 588 1220 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe 26 PID 1220 wrote to memory of 588 1220 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe 26 PID 1220 wrote to memory of 588 1220 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe 26 PID 1220 wrote to memory of 588 1220 7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe 26
Processes
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C:\Users\Admin\AppData\Local\Temp\7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe"C:\Users\Admin\AppData\Local\Temp\7ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1220 -
C:\Users\Admin\yuufek.exe"C:\Users\Admin\yuufek.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:588
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
192KB
MD501e1479d677fcb6c255b4c5a70aa1680
SHA1b573b8d0905ed7cde554d9b74f09846e26c7edd5
SHA2567ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758
SHA51287e9c43f65bbf7a5f66c86cc7372bb64a951ae5cc1957262d65056b5aaba284b1356b18021248f1a5ee9e0361c1528ebfedb545bcce8d34d4977fc09d8e70e29
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Filesize
192KB
MD501e1479d677fcb6c255b4c5a70aa1680
SHA1b573b8d0905ed7cde554d9b74f09846e26c7edd5
SHA2567ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758
SHA51287e9c43f65bbf7a5f66c86cc7372bb64a951ae5cc1957262d65056b5aaba284b1356b18021248f1a5ee9e0361c1528ebfedb545bcce8d34d4977fc09d8e70e29
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Filesize
192KB
MD501e1479d677fcb6c255b4c5a70aa1680
SHA1b573b8d0905ed7cde554d9b74f09846e26c7edd5
SHA2567ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758
SHA51287e9c43f65bbf7a5f66c86cc7372bb64a951ae5cc1957262d65056b5aaba284b1356b18021248f1a5ee9e0361c1528ebfedb545bcce8d34d4977fc09d8e70e29
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Filesize
192KB
MD501e1479d677fcb6c255b4c5a70aa1680
SHA1b573b8d0905ed7cde554d9b74f09846e26c7edd5
SHA2567ee9aca0aa811b65a4874f8dee8b24e88c247a82cb5c495fe8363660a80db758
SHA51287e9c43f65bbf7a5f66c86cc7372bb64a951ae5cc1957262d65056b5aaba284b1356b18021248f1a5ee9e0361c1528ebfedb545bcce8d34d4977fc09d8e70e29