Analysis
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max time kernel
40s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
05/12/2022, 19:47
Behavioral task
behavioral1
Sample
zyx.exe
Resource
win7-20220901-en
windows7-x64
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
zyx.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
zyx.exe
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Size
672KB
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MD5
943c724bd94eef1ef0e6999210e5595e
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SHA1
3e142d18961f45dfb578c0cd1e8cbb480d814605
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SHA256
51b06f5d3b7ed0b3fa06053b75b2154686d15fc4fb7b3365ec37fc9c4bc3fa3a
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SHA512
ad0499390d4241abb0e195c285ddc3bb63802e4290fac0d49a522e0769848ddbfe09dd45e4bd1f62919292db77c36906224bb5ac2bbe6a0b9acbfe2778d4b24f
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SSDEEP
12288:m3TdtLW5WIj1YSSdFxd3TdtLW5WIj1YSSdFx:QDsj1dEVDsj1dE
Score
10/10
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe regsvr.exe" zyx.exe -
Disables RegEdit via registry modification 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" zyx.exe -
Disables Task Manager via registry modification
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run zyx.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Msn Messsenger = "C:\\Windows\\system32\\regsvr.exe" zyx.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\i: zyx.exe File opened (read-only) \??\m: zyx.exe File opened (read-only) \??\r: zyx.exe File opened (read-only) \??\v: zyx.exe File opened (read-only) \??\x: zyx.exe File opened (read-only) \??\y: zyx.exe File opened (read-only) \??\h: zyx.exe File opened (read-only) \??\n: zyx.exe File opened (read-only) \??\o: zyx.exe File opened (read-only) \??\p: zyx.exe File opened (read-only) \??\s: zyx.exe File opened (read-only) \??\t: zyx.exe File opened (read-only) \??\u: zyx.exe File opened (read-only) \??\j: zyx.exe File opened (read-only) \??\f: zyx.exe File opened (read-only) \??\k: zyx.exe File opened (read-only) \??\l: zyx.exe File opened (read-only) \??\q: zyx.exe File opened (read-only) \??\z: zyx.exe File opened (read-only) \??\e: zyx.exe File opened (read-only) \??\b: zyx.exe File opened (read-only) \??\g: zyx.exe File opened (read-only) \??\w: zyx.exe File opened (read-only) \??\a: zyx.exe -
AutoIT Executable 2 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral1/memory/852-61-0x0000000000400000-0x000000000051D000-memory.dmp autoit_exe behavioral1/memory/852-62-0x0000000000400000-0x000000000051D000-memory.dmp autoit_exe -
Drops file in System32 directory 8 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\28463 zyx.exe File created C:\Windows\SysWOW64\regsvr.exe zyx.exe File opened for modification C:\Windows\SysWOW64\regsvr.exe zyx.exe File created C:\Windows\SysWOW64\svchost .exe zyx.exe File opened for modification C:\Windows\SysWOW64\svchost .exe zyx.exe File opened for modification C:\Windows\SysWOW64\setup.ini zyx.exe File created C:\Windows\SysWOW64\setting.ini zyx.exe File opened for modification C:\Windows\SysWOW64\setting.ini zyx.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\regsvr.exe zyx.exe File opened for modification C:\Windows\regsvr.exe zyx.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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description ioc Process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 zyx.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 zyx.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25 zyx.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 zyx.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe 852 zyx.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 852 wrote to memory of 1220 852 zyx.exe 27 PID 852 wrote to memory of 1220 852 zyx.exe 27 PID 852 wrote to memory of 1220 852 zyx.exe 27 PID 852 wrote to memory of 1220 852 zyx.exe 27 PID 1220 wrote to memory of 1844 1220 cmd.exe 29 PID 1220 wrote to memory of 1844 1220 cmd.exe 29 PID 1220 wrote to memory of 1844 1220 cmd.exe 29 PID 1220 wrote to memory of 1844 1220 cmd.exe 29 PID 852 wrote to memory of 916 852 zyx.exe 30 PID 852 wrote to memory of 916 852 zyx.exe 30 PID 852 wrote to memory of 916 852 zyx.exe 30 PID 852 wrote to memory of 916 852 zyx.exe 30 PID 916 wrote to memory of 468 916 cmd.exe 32 PID 916 wrote to memory of 468 916 cmd.exe 32 PID 916 wrote to memory of 468 916 cmd.exe 32 PID 916 wrote to memory of 468 916 cmd.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\zyx.exe"C:\Users\Admin\AppData\Local\Temp\zyx.exe"1⤵
- Modifies WinLogon for persistence
- Disables RegEdit via registry modification
- Adds Run key to start application
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:852 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /C AT /delete /yes2⤵
- Suspicious use of WriteProcessMemory
PID:1220 -
C:\Windows\SysWOW64\at.exeAT /delete /yes3⤵PID:1844
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\svchost .exe2⤵
- Suspicious use of WriteProcessMemory
PID:916 -
C:\Windows\SysWOW64\at.exeAT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\svchost .exe3⤵PID:468
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