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Analysis
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max time kernel
27s -
max time network
19s -
platform
windows10-1703_x64 -
resource
win10-20231215-ja -
resource tags
arch:x64arch:x86image:win10-20231215-jalocale:ja-jpos:windows10-1703-x64systemwindows -
submitted
31/12/2023, 16:49
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
MEMZ-master/MEMZ.exe
Resource
win10-20231215-ja
windows10-1703-x64
10 signatures
150 seconds
General
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Target
MEMZ-master/MEMZ.exe
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Size
16KB
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MD5
1d5ad9c8d3fee874d0feb8bfac220a11
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SHA1
ca6d3f7e6c784155f664a9179ca64e4034df9595
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SHA256
3872c12d31fc9825e8661ac01ecee2572460677afbc7093f920a8436a42e28ff
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SHA512
c8246f4137416be33b6d1ac89f2428b7c44d9376ac8489a9fbf65ef128a6c53fb50479e1e400c8e201c8611992ab1d6c1bd3d6cece89013edb4d35cdd22305b1
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SSDEEP
192:M2WgyvSW8gRc6olcIEiwqZKBkDFR43xWTM3LHf26gFrcx3sNq:JWgnSmFlcIqq3agmLH+6gF23sN
Score
6/10
Malware Config
Signatures
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description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA MEMZ.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 MEMZ.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\rescache\_merged\4183903823\810424605.pri taskmgr.exe File created C:\Windows\rescache\_merged\1601268389\3877292338.pri taskmgr.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1928 MEMZ.exe 1928 MEMZ.exe 1928 MEMZ.exe 1928 MEMZ.exe 4904 MEMZ.exe 4904 MEMZ.exe 1908 MEMZ.exe 1908 MEMZ.exe 980 MEMZ.exe 980 MEMZ.exe 980 MEMZ.exe 980 MEMZ.exe 1908 MEMZ.exe 1908 MEMZ.exe 4904 MEMZ.exe 4904 MEMZ.exe 1928 MEMZ.exe 1928 MEMZ.exe 880 MEMZ.exe 880 MEMZ.exe 1928 MEMZ.exe 1908 MEMZ.exe 1928 MEMZ.exe 1908 MEMZ.exe 4904 MEMZ.exe 4904 MEMZ.exe 980 MEMZ.exe 980 MEMZ.exe 980 MEMZ.exe 4904 MEMZ.exe 980 MEMZ.exe 4904 MEMZ.exe 1908 MEMZ.exe 1908 MEMZ.exe 1928 MEMZ.exe 1928 MEMZ.exe 880 MEMZ.exe 880 MEMZ.exe 1928 MEMZ.exe 880 MEMZ.exe 1928 MEMZ.exe 880 MEMZ.exe 1908 MEMZ.exe 1908 MEMZ.exe 4904 MEMZ.exe 4904 MEMZ.exe 980 MEMZ.exe 980 MEMZ.exe 980 MEMZ.exe 4904 MEMZ.exe 4904 MEMZ.exe 980 MEMZ.exe 1908 MEMZ.exe 1908 MEMZ.exe 880 MEMZ.exe 1928 MEMZ.exe 1928 MEMZ.exe 880 MEMZ.exe 1908 MEMZ.exe 1928 MEMZ.exe 1928 MEMZ.exe 1908 MEMZ.exe 980 MEMZ.exe 980 MEMZ.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 3184 taskmgr.exe Token: SeSystemProfilePrivilege 3184 taskmgr.exe Token: SeCreateGlobalPrivilege 3184 taskmgr.exe -
Suspicious use of FindShellTrayWindow 35 IoCs
pid Process 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe -
Suspicious use of SendNotifyMessage 35 IoCs
pid Process 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe 3184 taskmgr.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 4040 wrote to memory of 1928 4040 MEMZ.exe 74 PID 4040 wrote to memory of 1928 4040 MEMZ.exe 74 PID 4040 wrote to memory of 1928 4040 MEMZ.exe 74 PID 4040 wrote to memory of 980 4040 MEMZ.exe 75 PID 4040 wrote to memory of 980 4040 MEMZ.exe 75 PID 4040 wrote to memory of 980 4040 MEMZ.exe 75 PID 4040 wrote to memory of 1908 4040 MEMZ.exe 76 PID 4040 wrote to memory of 1908 4040 MEMZ.exe 76 PID 4040 wrote to memory of 1908 4040 MEMZ.exe 76 PID 4040 wrote to memory of 4904 4040 MEMZ.exe 77 PID 4040 wrote to memory of 4904 4040 MEMZ.exe 77 PID 4040 wrote to memory of 4904 4040 MEMZ.exe 77 PID 4040 wrote to memory of 880 4040 MEMZ.exe 78 PID 4040 wrote to memory of 880 4040 MEMZ.exe 78 PID 4040 wrote to memory of 880 4040 MEMZ.exe 78 PID 4040 wrote to memory of 4380 4040 MEMZ.exe 79 PID 4040 wrote to memory of 4380 4040 MEMZ.exe 79 PID 4040 wrote to memory of 4380 4040 MEMZ.exe 79 PID 4380 wrote to memory of 2912 4380 MEMZ.exe 81 PID 4380 wrote to memory of 2912 4380 MEMZ.exe 81 PID 4380 wrote to memory of 2912 4380 MEMZ.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"1⤵
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
PID:4040 -
C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
PID:1928
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
PID:980
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
PID:1908
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
PID:4904
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
PID:880
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /main2⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:4380 -
C:\Windows\SysWOW64\notepad.exe"C:\Windows\System32\notepad.exe" \note.txt3⤵PID:2912
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Drops file in Windows directory
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3184
Network
MITRE ATT&CK Enterprise v15
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Downloads
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Filesize
218B
MD5afa6955439b8d516721231029fb9ca1b
SHA1087a043cc123c0c0df2ffadcf8e71e3ac86bbae9
SHA2568e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270
SHA5125da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf