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Analysis
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max time kernel
152s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
07/11/2022, 20:51
Static task
static1
Behavioral task
behavioral1
Sample
759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe
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Size
148KB
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MD5
0cef0cf6242749bf7ab2cbd76348932f
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SHA1
9cbf3ff12530132a306ece1e38d77dea5e965558
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SHA256
759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c
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SHA512
0164db85bbaa70986a61f90a31f487cc5252e244347396a7cbbaeaa8f119caabce51eade3cc8f52b90c4edc7969028e54253c9b3322f204a9e5a6a8c61c4a870
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SSDEEP
3072:6SeWqFzxgwMylAUR6UQUcJPPB5RPXsS+t9jiC4oQZiE4P:6dFzxgZVU49xEtlzWq
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" 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe Set value (int) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yoicui.exe -
Executes dropped EXE 1 IoCs
pid Process 4944 yoicui.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 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe -
Adds Run key to start application 2 TTPs 52 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /Y" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /e" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /y" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /P" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /R" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /t" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /J" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /s" 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /I" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /Q" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /x" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /M" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /z" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /q" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /g" yoicui.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /r" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /l" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /c" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /O" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /j" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /k" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /Z" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /D" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /F" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /T" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /X" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /a" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /E" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /m" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /u" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /L" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /G" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /N" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /C" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /K" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /b" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /V" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /H" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /A" yoicui.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /p" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /w" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /s" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /f" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /i" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /B" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /h" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /n" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /W" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /o" yoicui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yoicui = "C:\\Users\\Admin\\yoicui.exe /v" yoicui.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 3348 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe 3348 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe 4944 yoicui.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3348 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe 4944 yoicui.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3348 wrote to memory of 4944 3348 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe 79 PID 3348 wrote to memory of 4944 3348 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe 79 PID 3348 wrote to memory of 4944 3348 759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe"C:\Users\Admin\AppData\Local\Temp\759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.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:3348 -
C:\Users\Admin\yoicui.exe"C:\Users\Admin\yoicui.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:4944
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
148KB
MD50311bf8fb9b06a0f79cc9a98e3e31d76
SHA1eae6ef3a3715b778b16635c966ca32e56dc260fa
SHA2560e9d3a9464a59bbd369705662560704cbcf0f02e063c329a9320b90bb0416682
SHA512b26efc2dc4371ae342347d78efdd82ce8ae0a64455d98a59db7dd1adccafb2978a4b1df84ebf06abaf967b2af88f6a3d953cb34c043581832e56b6a76798cf16
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Filesize
148KB
MD50311bf8fb9b06a0f79cc9a98e3e31d76
SHA1eae6ef3a3715b778b16635c966ca32e56dc260fa
SHA2560e9d3a9464a59bbd369705662560704cbcf0f02e063c329a9320b90bb0416682
SHA512b26efc2dc4371ae342347d78efdd82ce8ae0a64455d98a59db7dd1adccafb2978a4b1df84ebf06abaf967b2af88f6a3d953cb34c043581832e56b6a76798cf16