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Analysis
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max time kernel
155s -
max time network
48s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
03/12/2022, 19:44
Static task
static1
Behavioral task
behavioral1
Sample
f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe
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Size
116KB
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MD5
7f755d7673fb672c479e66a0dbffc8af
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SHA1
c38f0bfc6e4d5bb4263f09af858925a3266d54f9
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SHA256
f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d
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SHA512
50ed15bf72416a1bd914fb8b3efd55b0f9eb94c088b6c3d5f7620af5e34146d418cc652acfb3c15e1a067162a1190f4ec12cda5e8b991f5f010052e9226e9223
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SSDEEP
1536:d+cIRGgP97ep3E5zkons4MBikY+msHH0o4vwo3L2YRTB6m8AJ01:dF4rAE5zkPBir+miUoUEYRTB6ZYg
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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yiofe.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe -
Executes dropped EXE 1 IoCs
pid Process 1492 yiofe.exe -
Loads dropped DLL 2 IoCs
pid Process 288 f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe 288 f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /a" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /J" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /h" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /W" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /B" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /M" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /F" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /L" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /j" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /N" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /T" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /l" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /C" f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /n" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /t" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /Z" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /x" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /O" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /E" yiofe.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /R" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /p" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /y" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /w" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /H" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /e" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /k" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /K" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /S" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /V" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /u" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /D" yiofe.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /X" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /P" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /d" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /b" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /Q" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /Y" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /i" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /r" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /s" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /c" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /v" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /g" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /z" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /A" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /f" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /o" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /I" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /G" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /C" yiofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiofe = "C:\\Users\\Admin\\yiofe.exe /q" yiofe.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 288 f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe 1492 yiofe.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 288 f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe 1492 yiofe.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 288 wrote to memory of 1492 288 f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe 28 PID 288 wrote to memory of 1492 288 f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe 28 PID 288 wrote to memory of 1492 288 f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe 28 PID 288 wrote to memory of 1492 288 f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe"C:\Users\Admin\AppData\Local\Temp\f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.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:288 -
C:\Users\Admin\yiofe.exe"C:\Users\Admin\yiofe.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:1492
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
116KB
MD596fb8588e6a72f265454b604ade3473b
SHA18d935e68abad5b5551851b5e36327c7ec7e760fc
SHA256ffc3a8772c3bed88024930f0b291a624883f55f635ba68494582fea38b9c7f15
SHA5129ddca179745391a9376d0c7f765093f33d18a225611b076be1c62e8ba7bdc9a19f849317f5aa99ad2bcae0a6b03ae8aed2e3d3927f68f28e167b8692b9bae1af
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Filesize
116KB
MD596fb8588e6a72f265454b604ade3473b
SHA18d935e68abad5b5551851b5e36327c7ec7e760fc
SHA256ffc3a8772c3bed88024930f0b291a624883f55f635ba68494582fea38b9c7f15
SHA5129ddca179745391a9376d0c7f765093f33d18a225611b076be1c62e8ba7bdc9a19f849317f5aa99ad2bcae0a6b03ae8aed2e3d3927f68f28e167b8692b9bae1af
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Filesize
116KB
MD596fb8588e6a72f265454b604ade3473b
SHA18d935e68abad5b5551851b5e36327c7ec7e760fc
SHA256ffc3a8772c3bed88024930f0b291a624883f55f635ba68494582fea38b9c7f15
SHA5129ddca179745391a9376d0c7f765093f33d18a225611b076be1c62e8ba7bdc9a19f849317f5aa99ad2bcae0a6b03ae8aed2e3d3927f68f28e167b8692b9bae1af
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Filesize
116KB
MD596fb8588e6a72f265454b604ade3473b
SHA18d935e68abad5b5551851b5e36327c7ec7e760fc
SHA256ffc3a8772c3bed88024930f0b291a624883f55f635ba68494582fea38b9c7f15
SHA5129ddca179745391a9376d0c7f765093f33d18a225611b076be1c62e8ba7bdc9a19f849317f5aa99ad2bcae0a6b03ae8aed2e3d3927f68f28e167b8692b9bae1af