Analysis
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max time kernel
161s -
max time network
193s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
03-12-2022 19:17
Static task
static1
Behavioral task
behavioral1
Sample
a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe
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Size
296KB
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MD5
1ce9aa5f15d96505c08720cc148d8600
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SHA1
393c291a31e4e394ccefd4a443b5bac229ab446b
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SHA256
a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5
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SHA512
a3cd02a0888c077b4db21a2c303f5d9d1cc1d375f05ea1016e0275b39219702a1224a32b2235914e02b5aca6458614eb46bf3752772378af1497c268769b6778
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SSDEEP
3072:BcDg2q+sg+swlSN9BkPFzW85u9ututumuOu+uxuOugujuju9u9ugu9uPuTu6utu3:Bcq+sg+s
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yaobif.exe -
Executes dropped EXE 1 IoCs
pid Process 2792 yaobif.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe -
Adds Run key to start application 2 TTPs 50 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /R" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /g" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /b" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /J" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /X" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /K" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /z" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /W" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /T" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /h" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /d" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /B" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /M" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /A" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /j" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /a" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /Q" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /l" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /i" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /O" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /U" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /I" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /P" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /H" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /x" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /G" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /D" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /w" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /v" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /p" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /L" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /C" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /c" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /y" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /e" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /Y" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /F" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /u" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /k" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /n" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /r" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /V" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /q" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /f" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /N" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /s" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /S" yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /m" yaobif.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yaobif.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaobif = "C:\\Users\\Admin\\yaobif.exe /Z" yaobif.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 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe 2792 yaobif.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 792 a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe 2792 yaobif.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 792 wrote to memory of 2792 792 a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe 87 PID 792 wrote to memory of 2792 792 a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe 87 PID 792 wrote to memory of 2792 792 a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe 87 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81 PID 2792 wrote to memory of 792 2792 yaobif.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe"C:\Users\Admin\AppData\Local\Temp\a8c76cdc4e6262e9cc7c0abd4241d3370d7dcf1998c78b51c3eda410e2b195b5.exe"1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:792 -
C:\Users\Admin\yaobif.exe"C:\Users\Admin\yaobif.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
- Suspicious use of WriteProcessMemory
PID:2792
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
296KB
MD5778507252049b7272d970b3bb119148f
SHA12886a7e0e73df6807654d10437f91af89014b903
SHA2567f29fb1ea485e7bf8df5eef8e8c2910dcac885a05a6a75da951f6108d1ab8d8f
SHA51292e766aae5a35c6fb84aa170360d37b8200d1cb2cc184d9422cf78b769dc5576219c98e12e5134eb00186f4637c3d2e48bf87938cb54669fb0db95b4f5919636
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Filesize
296KB
MD5778507252049b7272d970b3bb119148f
SHA12886a7e0e73df6807654d10437f91af89014b903
SHA2567f29fb1ea485e7bf8df5eef8e8c2910dcac885a05a6a75da951f6108d1ab8d8f
SHA51292e766aae5a35c6fb84aa170360d37b8200d1cb2cc184d9422cf78b769dc5576219c98e12e5134eb00186f4637c3d2e48bf87938cb54669fb0db95b4f5919636