Analysis
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max time kernel
150s -
max time network
51s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
03-12-2023 15:54
Behavioral task
behavioral1
Sample
Umbrella.flv.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
Umbrella.flv.exe
Resource
win10v2004-20231130-en
General
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Target
Umbrella.flv.exe
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Size
93KB
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MD5
9c8cfc8027b21ff03525c1880ed347c1
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SHA1
3565ba9d14ab917ed66625a968bef184089e3c32
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SHA256
76231f72576c98527990b748706fd506d2fed084d12ebdc7b4e7952d1859e236
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SHA512
dbc67bc5c71bc69010db8fa4d94e574f6b804216236b77af35d0f493230d5049716ed28a25256790ecfec8b33c02ad7f6b57c664c35d1b7dec899495eb089aac
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SSDEEP
768:mHY3Oxqctib5nkPQW63m/HsqmGzh+IxvXnKN2tfKkXxrjEtCdnl2pi1Rz4Rk3+ir:ox3iFqHsJE4I15tTjEwzGi1dDPDbgS
Malware Config
Signatures
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Disables Task Manager via registry modification
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Modifies Windows Firewall 1 TTPs 1 IoCs
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Drops startup file 4 IoCs
Processes:
Umbrella.flv.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\java.exe Umbrella.flv.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\java.exe Umbrella.flv.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\01d59f5df160e737b4f48d99a25a641ajava.exe Umbrella.flv.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\01d59f5df160e737b4f48d99a25a641ajava.exe Umbrella.flv.exe -
Drops autorun.inf file 1 TTPs 4 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
Processes:
Umbrella.flv.exedescription ioc process File created C:\autorun.inf Umbrella.flv.exe File opened for modification C:\autorun.inf Umbrella.flv.exe File created F:\autorun.inf Umbrella.flv.exe File opened for modification F:\autorun.inf Umbrella.flv.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
Umbrella.flv.exepid process 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe 4952 Umbrella.flv.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Umbrella.flv.exepid process 4952 Umbrella.flv.exe -
Suspicious use of AdjustPrivilegeToken 35 IoCs
Processes:
Umbrella.flv.exedescription pid process Token: SeDebugPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe Token: 33 4952 Umbrella.flv.exe Token: SeIncBasePriorityPrivilege 4952 Umbrella.flv.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
Umbrella.flv.exedescription pid process target process PID 4952 wrote to memory of 5096 4952 Umbrella.flv.exe netsh.exe PID 4952 wrote to memory of 5096 4952 Umbrella.flv.exe netsh.exe PID 4952 wrote to memory of 5096 4952 Umbrella.flv.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Umbrella.flv.exe"C:\Users\Admin\AppData\Local\Temp\Umbrella.flv.exe"1⤵
- Drops startup file
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Umbrella.flv.exe" "Umbrella.flv.exe" ENABLE2⤵
- Modifies Windows Firewall
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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F:\Umbrella.flv.exeFilesize
93KB
MD59c8cfc8027b21ff03525c1880ed347c1
SHA13565ba9d14ab917ed66625a968bef184089e3c32
SHA25676231f72576c98527990b748706fd506d2fed084d12ebdc7b4e7952d1859e236
SHA512dbc67bc5c71bc69010db8fa4d94e574f6b804216236b77af35d0f493230d5049716ed28a25256790ecfec8b33c02ad7f6b57c664c35d1b7dec899495eb089aac
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memory/4952-0-0x00000000746D0000-0x0000000074C81000-memory.dmpFilesize
5.7MB
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memory/4952-1-0x00000000746D0000-0x0000000074C81000-memory.dmpFilesize
5.7MB
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memory/4952-2-0x0000000001930000-0x0000000001940000-memory.dmpFilesize
64KB
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memory/4952-15-0x00000000746D0000-0x0000000074C81000-memory.dmpFilesize
5.7MB
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memory/4952-16-0x00000000746D0000-0x0000000074C81000-memory.dmpFilesize
5.7MB