Analysis
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max time kernel
152s -
max time network
133s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
06-12-2022 10:25
Static task
static1
Behavioral task
behavioral1
Sample
6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe
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Size
320KB
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MD5
3ce067bc36bbde6cb6c098cb8baf3a90
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SHA1
c453d26a69ad6e0f831c952b0653abc7caf24e81
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SHA256
6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b
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SHA512
6e19e6730d91e09d5bc5c0a493785042c70490baef311e53164d52d2d3fc32d40a983601ee2c7399e964650af753bd46b725bec9ab7bdeac438c86f17166da63
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SSDEEP
6144:tD+xPxlsG6i1xJ66onJGr+qyVztumGS5Ni3hpgoMKMphaeVf2B71uy:tMPjsG6iH6JGr+qyVztumGS5YqoyU71x
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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe Set value (int) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" riikuiw.exe -
Executes dropped EXE 1 IoCs
pid Process 1176 riikuiw.exe -
Loads dropped DLL 2 IoCs
pid Process 1216 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe 1216 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe -
Adds Run key to start application 2 TTPs 50 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /y" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /o" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /w" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /X" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /O" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /I" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /d" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /a" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /U" riikuiw.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /g" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /l" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /B" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /b" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /F" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /L" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /Q" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /e" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /R" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /K" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /s" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /j" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /h" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /J" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /D" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /c" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /Z" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /S" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /i" 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /k" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /t" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /n" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /x" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /u" riikuiw.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /G" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /m" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /P" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /N" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /C" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /Y" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /f" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /T" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /M" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /H" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /V" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /A" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /p" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /i" riikuiw.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\riikuiw = "C:\\Users\\Admin\\riikuiw.exe /z" riikuiw.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 1216 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe 1176 riikuiw.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1216 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe 1176 riikuiw.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1216 wrote to memory of 1176 1216 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe 28 PID 1216 wrote to memory of 1176 1216 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe 28 PID 1216 wrote to memory of 1176 1216 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe 28 PID 1216 wrote to memory of 1176 1216 6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.exe"C:\Users\Admin\AppData\Local\Temp\6c7fa479aef712ab09fcca4ae8cf786ab48004cf6cba963d465a7be929af538b.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:1216 -
C:\Users\Admin\riikuiw.exe"C:\Users\Admin\riikuiw.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:1176
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
320KB
MD58edf8717c383f023d3255defd4469334
SHA14979c338a131b530412efb7468dfc11daaa0a6e4
SHA256e044d4031be2c457daf5192fb863b3ea7e890501645e3f0ae291a6bbcbcd9e3b
SHA5123781df4ebfa773189b4ec1ddbb91937e9014b8440dc74d6a688f72aca70e4098b8a147ca3966d8e7899c35076fff62dd323ab26940da1c30deec1114dfbe66cd
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Filesize
320KB
MD58edf8717c383f023d3255defd4469334
SHA14979c338a131b530412efb7468dfc11daaa0a6e4
SHA256e044d4031be2c457daf5192fb863b3ea7e890501645e3f0ae291a6bbcbcd9e3b
SHA5123781df4ebfa773189b4ec1ddbb91937e9014b8440dc74d6a688f72aca70e4098b8a147ca3966d8e7899c35076fff62dd323ab26940da1c30deec1114dfbe66cd
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Filesize
320KB
MD58edf8717c383f023d3255defd4469334
SHA14979c338a131b530412efb7468dfc11daaa0a6e4
SHA256e044d4031be2c457daf5192fb863b3ea7e890501645e3f0ae291a6bbcbcd9e3b
SHA5123781df4ebfa773189b4ec1ddbb91937e9014b8440dc74d6a688f72aca70e4098b8a147ca3966d8e7899c35076fff62dd323ab26940da1c30deec1114dfbe66cd
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Filesize
320KB
MD58edf8717c383f023d3255defd4469334
SHA14979c338a131b530412efb7468dfc11daaa0a6e4
SHA256e044d4031be2c457daf5192fb863b3ea7e890501645e3f0ae291a6bbcbcd9e3b
SHA5123781df4ebfa773189b4ec1ddbb91937e9014b8440dc74d6a688f72aca70e4098b8a147ca3966d8e7899c35076fff62dd323ab26940da1c30deec1114dfbe66cd