Analysis
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max time kernel
207s -
max time network
237s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
02-12-2022 22:17
Behavioral task
behavioral1
Sample
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe
Resource
win10v2004-20221111-en
General
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Target
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe
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Size
635KB
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MD5
cdaa24aa755ae64fe56c6d3bef8bff6d
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SHA1
477421a230de751f5e4b4a16671c603683b7d117
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SHA256
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49
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SHA512
01043a4097194ebefb90438121da22d2af1bf46934aeffaac7c51ac56404ccfd2dcd4d5ed8236171406b7586aa4d80a57c44b1a7f58e4bf891c141a07c580e96
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SSDEEP
12288:XpwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIXn/D:5wAcu99lPzvxP+Bsz2XjWTRMQckkIXn7
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe" a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe -
Executes dropped EXE 1 IoCs
Processes:
winupdate.exepid process 4668 winupdate.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
winupdate.exea01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 8 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exewinupdate.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier winupdate.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
Processes:
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exewinupdate.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier winupdate.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exewinupdate.exedescription pid process Token: SeIncreaseQuotaPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeSecurityPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeTakeOwnershipPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeLoadDriverPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeSystemProfilePrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeSystemtimePrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeProfSingleProcessPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeIncBasePriorityPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeCreatePagefilePrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeBackupPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeRestorePrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeShutdownPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeDebugPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeSystemEnvironmentPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeChangeNotifyPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeRemoteShutdownPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeUndockPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeManageVolumePrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeImpersonatePrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeCreateGlobalPrivilege 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: 33 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: 34 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: 35 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: 36 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe Token: SeIncreaseQuotaPrivilege 4668 winupdate.exe Token: SeSecurityPrivilege 4668 winupdate.exe Token: SeTakeOwnershipPrivilege 4668 winupdate.exe Token: SeLoadDriverPrivilege 4668 winupdate.exe Token: SeSystemProfilePrivilege 4668 winupdate.exe Token: SeSystemtimePrivilege 4668 winupdate.exe Token: SeProfSingleProcessPrivilege 4668 winupdate.exe Token: SeIncBasePriorityPrivilege 4668 winupdate.exe Token: SeCreatePagefilePrivilege 4668 winupdate.exe Token: SeBackupPrivilege 4668 winupdate.exe Token: SeRestorePrivilege 4668 winupdate.exe Token: SeShutdownPrivilege 4668 winupdate.exe Token: SeDebugPrivilege 4668 winupdate.exe Token: SeSystemEnvironmentPrivilege 4668 winupdate.exe Token: SeChangeNotifyPrivilege 4668 winupdate.exe Token: SeRemoteShutdownPrivilege 4668 winupdate.exe Token: SeUndockPrivilege 4668 winupdate.exe Token: SeManageVolumePrivilege 4668 winupdate.exe Token: SeImpersonatePrivilege 4668 winupdate.exe Token: SeCreateGlobalPrivilege 4668 winupdate.exe Token: 33 4668 winupdate.exe Token: 34 4668 winupdate.exe Token: 35 4668 winupdate.exe Token: 36 4668 winupdate.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exedescription pid process target process PID 1996 wrote to memory of 3748 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe explorer.exe PID 1996 wrote to memory of 3748 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe explorer.exe PID 1996 wrote to memory of 3748 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe explorer.exe PID 1996 wrote to memory of 4668 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe winupdate.exe PID 1996 wrote to memory of 4668 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe winupdate.exe PID 1996 wrote to memory of 4668 1996 a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe winupdate.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe"C:\Users\Admin\AppData\Local\Temp\a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49.exe"1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exe"C:\Windows\SysWOW64\explorer.exe"2⤵
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C:\Windupdt\winupdate.exe"C:\Windupdt\winupdate.exe"2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Windupdt\winupdate.exeFilesize
635KB
MD5cdaa24aa755ae64fe56c6d3bef8bff6d
SHA1477421a230de751f5e4b4a16671c603683b7d117
SHA256a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49
SHA51201043a4097194ebefb90438121da22d2af1bf46934aeffaac7c51ac56404ccfd2dcd4d5ed8236171406b7586aa4d80a57c44b1a7f58e4bf891c141a07c580e96
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C:\Windupdt\winupdate.exeFilesize
635KB
MD5cdaa24aa755ae64fe56c6d3bef8bff6d
SHA1477421a230de751f5e4b4a16671c603683b7d117
SHA256a01f1a0789beee9f0ab471734ac420445d1eaae94b259f6d430bef9c8f26fe49
SHA51201043a4097194ebefb90438121da22d2af1bf46934aeffaac7c51ac56404ccfd2dcd4d5ed8236171406b7586aa4d80a57c44b1a7f58e4bf891c141a07c580e96
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memory/3748-133-0x0000000000000000-mapping.dmp
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memory/4668-134-0x0000000000000000-mapping.dmp