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Analysis
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max time kernel
150s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
05/12/2022, 22:09
Static task
static1
Behavioral task
behavioral1
Sample
8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe
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Size
184KB
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MD5
2d953984df46f39073afd9e6dcdbc430
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SHA1
1e2b6dfb10b844aecce01a0debacc3a4c14a6e60
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SHA256
8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e
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SHA512
18a0ea8fceb7f0f0ac49dd31c207e2bc07e4956c1c5c7b3e5adc5e9a57cc5ad7a18fabfce3be60be8a2d00babfe2feb90caddf1e5e8ab291892402a2f14cd476
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SSDEEP
3072:BDGXZleu7o897rl2Y4HpRSQ8nsl8Koay6Vs68:YQulF8HpRpAKoahVsZ
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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" weoosov.exe -
Executes dropped EXE 1 IoCs
pid Process 4708 weoosov.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /s" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /z" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /j" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /v" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /w" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /l" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /y" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /x" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /g" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /u" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /s" 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /h" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /i" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /c" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /m" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /r" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /e" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /t" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /b" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /n" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /q" weoosov.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /o" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /k" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /d" weoosov.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /f" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /p" weoosov.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\weoosov = "C:\\Users\\Admin\\weoosov.exe /a" weoosov.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 4032 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe 4032 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe 4708 weoosov.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4032 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe 4708 weoosov.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4032 wrote to memory of 4708 4032 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe 83 PID 4032 wrote to memory of 4708 4032 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe 83 PID 4032 wrote to memory of 4708 4032 8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.exe"C:\Users\Admin\AppData\Local\Temp\8267f28d525130ceb710584d5655fa93d98fb265aca760cccd4f036d7ddf504e.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:4032 -
C:\Users\Admin\weoosov.exe"C:\Users\Admin\weoosov.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:4708
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
184KB
MD542a64c1c34c2b6f549a33769a626b265
SHA1835910f9f3a01da055e39a9af33e4cf1248de160
SHA256ea767f908d25902618391dde9513704f27766e0036c318330575080896e8e511
SHA512aa728563e37d5ab3ccee0bed97b4d3568b103292785f04180093ddb054bf65348c2fe85c3f257a8d740807421dd3411ceb1f139ecba934a5392836f87aa7f7cb
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Filesize
184KB
MD542a64c1c34c2b6f549a33769a626b265
SHA1835910f9f3a01da055e39a9af33e4cf1248de160
SHA256ea767f908d25902618391dde9513704f27766e0036c318330575080896e8e511
SHA512aa728563e37d5ab3ccee0bed97b4d3568b103292785f04180093ddb054bf65348c2fe85c3f257a8d740807421dd3411ceb1f139ecba934a5392836f87aa7f7cb