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Analysis
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max time kernel
73s -
max time network
80s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
25/04/2024, 16:16
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
Corsac.exe
Resource
win10-20240404-en
windows10-1703-x64
9 signatures
300 seconds
General
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Target
Corsac.exe
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Size
19KB
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MD5
dcbdfabd2081401507f1ce7afb4bd062
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SHA1
c9c07d14dc3d6ec929974ec0d79b0762166ecaf1
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SHA256
b19fb4f6c04f411b1a64a4de7a95eb80783880fa0391adcab3591cef2b17dde9
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SHA512
1da4e6bed08117578beb3ab2943c4445d72b84f4ab38063ae5d4876679835d6856177a00b5ea7c6abd382b9673ce6feb50b2b713c52df35322fd692bd7aa081d
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SSDEEP
384:bgnkS++R2Rnb99wYfvNPjRdfvMgYz4kxqpfnSrBicVefFBsujYcV64UwJFZb:0e95VHfWrYc+ZYcV6bw9b
Score
8/10
Malware Config
Signatures
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Downloads MZ/PE file
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Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 1 pastebin.com 2 pastebin.com -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\rescache\_merged\4183903823\2290032291.pri taskmgr.exe File created C:\Windows\rescache\_merged\1601268389\715946058.pri taskmgr.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 taskmgr.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString taskmgr.exe -
Suspicious behavior: EnumeratesProcesses 34 IoCs
pid Process 2176 Corsac.exe 2176 Corsac.exe 2176 Corsac.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeDebugPrivilege 2176 Corsac.exe Token: SeDebugPrivilege 4856 taskmgr.exe Token: SeSystemProfilePrivilege 4856 taskmgr.exe Token: SeCreateGlobalPrivilege 4856 taskmgr.exe Token: 33 4856 taskmgr.exe Token: SeIncBasePriorityPrivilege 4856 taskmgr.exe -
Suspicious use of FindShellTrayWindow 57 IoCs
pid Process 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe -
Suspicious use of SendNotifyMessage 57 IoCs
pid Process 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe 4856 taskmgr.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Corsac.exe"C:\Users\Admin\AppData\Local\Temp\Corsac.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2176
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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)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4856