Analysis
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max time kernel
150s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
30/10/2022, 00:08
Static task
static1
Behavioral task
behavioral1
Sample
011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe
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Size
216KB
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MD5
a307cd22bcd4f55700bf13dd8b2cc410
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SHA1
f89bb76274817ebce5fc8ff8ce9197375bf39d2d
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SHA256
011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328
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SHA512
7283e0b483674d18f4003bd5a01c71c5246a3ce8d0e7e2a8bf9d2abf400b4e09ccacd7c1b969ef2ea1c4c13474bcc9b80418c52fe9eb77701848ae5f90d0237d
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SSDEEP
3072:e8Tm79SHMdrgJTKMN6K/iAKRNamLFa8cstBZZMf:DM1GKMN66iA/UtZ
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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yaiyuv.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe -
Executes dropped EXE 1 IoCs
pid Process 1428 yaiyuv.exe -
Loads dropped DLL 2 IoCs
pid Process 1380 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe 1380 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe -
Adds Run key to start application 2 TTPs 58 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /p" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /c" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /s" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /p" yaiyuv.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /e" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /f" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /h" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /w" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /n" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /o" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /z" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /j" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /i" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /r" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /b" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /t" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /n" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /l" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /v" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /m" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /e" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /c" 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /q" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /t" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /u" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /r" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /a" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /j" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /s" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /m" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /y" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /b" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /x" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /q" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /v" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /f" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /x" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /d" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /a" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /l" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /g" yaiyuv.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /w" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /z" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /k" yaiyuv.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /i" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /c" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /o" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /d" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /g" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /y" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /u" yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /c" 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yaiyuv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /h" yaiyuv.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaiyuv = "C:\\Users\\Admin\\yaiyuv.exe /k" yaiyuv.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 1380 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe 1428 yaiyuv.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1380 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe 1428 yaiyuv.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1380 wrote to memory of 1428 1380 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe 27 PID 1380 wrote to memory of 1428 1380 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe 27 PID 1380 wrote to memory of 1428 1380 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe 27 PID 1380 wrote to memory of 1428 1380 011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.exe"C:\Users\Admin\AppData\Local\Temp\011d8538be1576caafb8595250cf3a85530129299cc99766f98ddac6f22a2328.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:1380 -
C:\Users\Admin\yaiyuv.exe"C:\Users\Admin\yaiyuv.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:1428
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
216KB
MD5a2c93fe093a38fbaafd27256926f7198
SHA174d2c487e71b8873ff1dee91694c5df17b472f68
SHA2560ae6d3f2fa76cc64e8eb619a5496378253c7f744d258f6981b7ae459846d0c95
SHA512b208ff607721c098e0a9fc2d7a6742acce6a8c15d530e3f31a5599a8407781c84fc6aef57c1de2a9bf08a552e4ceebe6a51930ba5a6d26e52f8ae932cafa7bd4
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Filesize
216KB
MD5a2c93fe093a38fbaafd27256926f7198
SHA174d2c487e71b8873ff1dee91694c5df17b472f68
SHA2560ae6d3f2fa76cc64e8eb619a5496378253c7f744d258f6981b7ae459846d0c95
SHA512b208ff607721c098e0a9fc2d7a6742acce6a8c15d530e3f31a5599a8407781c84fc6aef57c1de2a9bf08a552e4ceebe6a51930ba5a6d26e52f8ae932cafa7bd4
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Filesize
216KB
MD5a2c93fe093a38fbaafd27256926f7198
SHA174d2c487e71b8873ff1dee91694c5df17b472f68
SHA2560ae6d3f2fa76cc64e8eb619a5496378253c7f744d258f6981b7ae459846d0c95
SHA512b208ff607721c098e0a9fc2d7a6742acce6a8c15d530e3f31a5599a8407781c84fc6aef57c1de2a9bf08a552e4ceebe6a51930ba5a6d26e52f8ae932cafa7bd4
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Filesize
216KB
MD5a2c93fe093a38fbaafd27256926f7198
SHA174d2c487e71b8873ff1dee91694c5df17b472f68
SHA2560ae6d3f2fa76cc64e8eb619a5496378253c7f744d258f6981b7ae459846d0c95
SHA512b208ff607721c098e0a9fc2d7a6742acce6a8c15d530e3f31a5599a8407781c84fc6aef57c1de2a9bf08a552e4ceebe6a51930ba5a6d26e52f8ae932cafa7bd4