Analysis
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max time kernel
159s -
max time network
166s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
20-10-2022 01:34
Static task
static1
Behavioral task
behavioral1
Sample
b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe
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Size
164KB
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MD5
809eff5a373f4d2ef49b1f4b457fa68e
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SHA1
8711d12afa15bf686f952e0c0210350678b3a0c0
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SHA256
b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be
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SHA512
9b6a06aab302bfbce6ee297beb90dcdfdbe5b9b56d4318483449bab555ebd2d4eb861c2e4aaf85f67d234d3287d46d6f307fa8ba5f30a33ccc782f1c52784cdf
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SSDEEP
3072:EVpHp2c5Y2Xcz5LSnlqa1T+iOf1kp5K3U4oQZiE3B7:EV2cO2XclLSnkiOfamAWf
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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" kyvod.exe -
Executes dropped EXE 1 IoCs
pid Process 4792 kyvod.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe -
Adds Run key to start application 2 TTPs 51 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /t" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /v" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /U" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /O" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /N" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /z" kyvod.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /f" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /u" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /o" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /q" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /a" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /h" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /Z" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /W" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /J" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /p" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /R" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /H" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /D" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /L" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /G" kyvod.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /d" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /A" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /b" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /E" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /M" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /K" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /Y" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /r" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /w" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /q" b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /m" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /e" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /C" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /l" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /n" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /F" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /V" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /i" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /g" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /k" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /c" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /y" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /x" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /T" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /Q" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /s" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /B" kyvod.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kyvod = "C:\\Users\\Admin\\kyvod.exe /X" kyvod.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 4804 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 4804 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe 4792 kyvod.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4804 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 4792 kyvod.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4804 wrote to memory of 4792 4804 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 83 PID 4804 wrote to memory of 4792 4804 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 83 PID 4804 wrote to memory of 4792 4804 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe"C:\Users\Admin\AppData\Local\Temp\b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4804 -
C:\Users\Admin\kyvod.exe"C:\Users\Admin\kyvod.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:4792
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
164KB
MD5fc3068627009a12f0713a95b216169ab
SHA13779980282f49bb53f091c4ce2951cb75793fb7f
SHA25635ee68122e3674b74f483b9ee9baeb0f250708f54a3171fa4c6d100a4cc41f5f
SHA512019dd33d20f9c74a2b28db26f471d80ef6fc0c8e6092f4a2f5f31dcf5d16203a43b661584775a15df07419b632417f46f50c8034bf697a7ce0143338d8d106f4
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Filesize
164KB
MD5fc3068627009a12f0713a95b216169ab
SHA13779980282f49bb53f091c4ce2951cb75793fb7f
SHA25635ee68122e3674b74f483b9ee9baeb0f250708f54a3171fa4c6d100a4cc41f5f
SHA512019dd33d20f9c74a2b28db26f471d80ef6fc0c8e6092f4a2f5f31dcf5d16203a43b661584775a15df07419b632417f46f50c8034bf697a7ce0143338d8d106f4