Analysis
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max time kernel
153s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
05/12/2022, 23:39
Static task
static1
Behavioral task
behavioral1
Sample
8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe
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Size
236KB
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MD5
8bb766107e31e9462c27a303ce3d3671
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SHA1
03438218b99b60bc43f58783c678b99f82260a9c
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SHA256
8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7
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SHA512
fe4d97f9f75e6954ce22b8995716dd6e7e31cfac6d53d1f3c10fb24be1e0ca83b77206744f2ebbf346e4f85588ca6dfb2d1298a5bce190424a8915c3c644627d
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SSDEEP
6144:X5l/k3vnS/Gi+YdQEp9szHR8uBAoE0EOIp5Jx:3/k3vnS/Gi+YdQEp9szHR8uBAotST
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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe Set value (int) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" guowiol.exe -
Executes dropped EXE 1 IoCs
pid Process 4620 guowiol.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /g" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /s" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /G" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /J" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /k" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /N" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /E" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /X" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /Z" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /l" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /B" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /H" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /q" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /R" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /D" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /C" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /e" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /f" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /K" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /i" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /r" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /M" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /Y" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /j" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /o" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /T" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /p" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /A" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /d" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /P" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /v" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /z" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /a" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /L" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /b" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /h" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /W" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /S" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /m" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /I" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /y" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /t" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /c" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /V" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /U" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /n" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /u" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /F" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /O" guowiol.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /u" 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guowiol = "C:\\Users\\Admin\\guowiol.exe /Q" guowiol.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ guowiol.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 2204 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe 2204 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe 4620 guowiol.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2204 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe 4620 guowiol.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2204 wrote to memory of 4620 2204 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe 81 PID 2204 wrote to memory of 4620 2204 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe 81 PID 2204 wrote to memory of 4620 2204 8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.exe"C:\Users\Admin\AppData\Local\Temp\8441fcf301ea84ae2e4cea3fd6556d115544366ccc40914024837e1ef0bd2dc7.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:2204 -
C:\Users\Admin\guowiol.exe"C:\Users\Admin\guowiol.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:4620
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
236KB
MD5916cc2a4799526b96f3be98920f5dd77
SHA1045b3b98409984f586dda5a1f842e144cc612985
SHA25655dd76c8183e6229079360656173596c7b7cb861eee32cd86928010b3fbe16ad
SHA5124db66458fac92fbbc8e5f4e548bcdc6e3f2f636b020f59ba496b1fb0b3f321701e7b90a1e87c5339cfdff0b3f9ca815857480935c2c8884637bd3005fb869b77
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Filesize
236KB
MD5916cc2a4799526b96f3be98920f5dd77
SHA1045b3b98409984f586dda5a1f842e144cc612985
SHA25655dd76c8183e6229079360656173596c7b7cb861eee32cd86928010b3fbe16ad
SHA5124db66458fac92fbbc8e5f4e548bcdc6e3f2f636b020f59ba496b1fb0b3f321701e7b90a1e87c5339cfdff0b3f9ca815857480935c2c8884637bd3005fb869b77