Analysis
- max time kernel
167s - max time network
176s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
13/10/2022, 23:16
Behavioral task
behavioral1
Sample
49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe
Resource
win7-20220901-en
windows7-x64
15 signatures
150 seconds
Behavioral task
behavioral2
Sample
49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
16 signatures
150 seconds
General
- Target 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe
- Size 635KB
- Sample221013-29fd5aach9
- SHA256 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e
- MD5 021c78206a4bd79ed7953124ce6066bb
- SHA1 b31897abbae85040b5c74a6a613e71bbc9199aa0
- SHA512 1f4200f3f4329cd0204b6162b002c3cbe57112653798823ad9576a10501b4e9a51cb5f4d18c3b1bd24ac88e6b2b6a479db173b6019e2d2170b5bb6379bff4c02
- SSDEEP 12288:bpwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIXn/q:twAcu99lPzvxP+Bsz2XjWTRMQckkIXnC
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\Comet\\update.exe,C:\\Windows\\system32\\Comet\\update.exe" update.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\Comet\\update.exe" 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe - Modifies firewall policy service 2 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1" explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" explorer.exe - Executes dropped EXE 1 IoCs
pid Process 3324 update.exe - Checks BIOS information in registry 2 TTPs 3 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate update.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate explorer.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe - Adds Run key to start application 2 TTPs 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\updater = "C:\\Windows\\system32\\Comet\\update.exe" 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run update.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\updater = "C:\\Windows\\system32\\Comet\\update.exe" update.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run explorer.exe - Drops file in System32 directory 6 IoCs
description ioc Process File created C:\Windows\SysWOW64\Comet\update.exe update.exe File opened for modification C:\Windows\SysWOW64\Comet\update.exe update.exe File opened for modification C:\Windows\SysWOW64\Comet\ update.exe File created C:\Windows\SysWOW64\Comet\update.exe 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe File opened for modification C:\Windows\SysWOW64\Comet\update.exe 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe File opened for modification C:\Windows\SysWOW64\Comet\ 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3324 set thread context of 4060 3324 update.exe 82 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 12 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString update.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier update.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier explorer.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 update.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier update.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier explorer.exe - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier update.exe - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeSecurityPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeTakeOwnershipPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeLoadDriverPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeSystemProfilePrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeSystemtimePrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeProfSingleProcessPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeIncBasePriorityPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeCreatePagefilePrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeBackupPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeRestorePrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeShutdownPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeDebugPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeSystemEnvironmentPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeChangeNotifyPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeRemoteShutdownPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeUndockPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeManageVolumePrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeImpersonatePrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeCreateGlobalPrivilege 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: 33 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: 34 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: 35 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: 36 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe Token: SeIncreaseQuotaPrivilege 3324 update.exe Token: SeSecurityPrivilege 3324 update.exe Token: SeTakeOwnershipPrivilege 3324 update.exe Token: SeLoadDriverPrivilege 3324 update.exe Token: SeSystemProfilePrivilege 3324 update.exe Token: SeSystemtimePrivilege 3324 update.exe Token: SeProfSingleProcessPrivilege 3324 update.exe Token: SeIncBasePriorityPrivilege 3324 update.exe Token: SeCreatePagefilePrivilege 3324 update.exe Token: SeBackupPrivilege 3324 update.exe Token: SeRestorePrivilege 3324 update.exe Token: SeShutdownPrivilege 3324 update.exe Token: SeDebugPrivilege 3324 update.exe Token: SeSystemEnvironmentPrivilege 3324 update.exe Token: SeChangeNotifyPrivilege 3324 update.exe Token: SeRemoteShutdownPrivilege 3324 update.exe Token: SeUndockPrivilege 3324 update.exe Token: SeManageVolumePrivilege 3324 update.exe Token: SeImpersonatePrivilege 3324 update.exe Token: SeCreateGlobalPrivilege 3324 update.exe Token: 33 3324 update.exe Token: 34 3324 update.exe Token: 35 3324 update.exe Token: 36 3324 update.exe Token: SeIncreaseQuotaPrivilege 4060 explorer.exe Token: SeSecurityPrivilege 4060 explorer.exe Token: SeTakeOwnershipPrivilege 4060 explorer.exe Token: SeLoadDriverPrivilege 4060 explorer.exe Token: SeSystemProfilePrivilege 4060 explorer.exe Token: SeSystemtimePrivilege 4060 explorer.exe Token: SeProfSingleProcessPrivilege 4060 explorer.exe Token: SeIncBasePriorityPrivilege 4060 explorer.exe Token: SeCreatePagefilePrivilege 4060 explorer.exe Token: SeBackupPrivilege 4060 explorer.exe Token: SeRestorePrivilege 4060 explorer.exe Token: SeShutdownPrivilege 4060 explorer.exe Token: SeDebugPrivilege 4060 explorer.exe Token: SeSystemEnvironmentPrivilege 4060 explorer.exe Token: SeChangeNotifyPrivilege 4060 explorer.exe Token: SeRemoteShutdownPrivilege 4060 explorer.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4060 explorer.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4636 wrote to memory of 4956 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe 80 PID 4636 wrote to memory of 4956 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe 80 PID 4636 wrote to memory of 4956 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe 80 PID 4636 wrote to memory of 3324 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe 81 PID 4636 wrote to memory of 3324 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe 81 PID 4636 wrote to memory of 3324 4636 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe 81 PID 3324 wrote to memory of 4060 3324 update.exe 82 PID 3324 wrote to memory of 4060 3324 update.exe 82 PID 3324 wrote to memory of 4060 3324 update.exe 82 PID 3324 wrote to memory of 4060 3324 update.exe 82 PID 3324 wrote to memory of 4060 3324 update.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe"C:\Users\Admin\AppData\Local\Temp\49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e.exe"1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4636 -
C:\Windows\SysWOW64\explorer.exe"C:\Windows\SysWOW64\explorer.exe"2⤵PID:4956
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C:\Windows\SysWOW64\Comet\update.exe"C:\Windows\system32\Comet\update.exe"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Checks BIOS information in registry
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3324 -
C:\Windows\SysWOW64\explorer.exe"C:\Windows\SysWOW64\explorer.exe"3⤵
- Modifies firewall policy service
- Checks BIOS information in registry
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4060
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\Comet\update.exe
- Size 635KB
- SHA256 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e
- MD5 021c78206a4bd79ed7953124ce6066bb
- SHA1 b31897abbae85040b5c74a6a613e71bbc9199aa0
- SHA512 1f4200f3f4329cd0204b6162b002c3cbe57112653798823ad9576a10501b4e9a51cb5f4d18c3b1bd24ac88e6b2b6a479db173b6019e2d2170b5bb6379bff4c02
- SSDEEP 12288:bpwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIXn/q:twAcu99lPzvxP+Bsz2XjWTRMQckkIXnC
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\Comet\update.exe
- Size 635KB
- SHA256 49ed753bfdf824548f287dcec8df93856e3bff813efdf98673db0aca0b49542e
- MD5 021c78206a4bd79ed7953124ce6066bb
- SHA1 b31897abbae85040b5c74a6a613e71bbc9199aa0
- SHA512 1f4200f3f4329cd0204b6162b002c3cbe57112653798823ad9576a10501b4e9a51cb5f4d18c3b1bd24ac88e6b2b6a479db173b6019e2d2170b5bb6379bff4c02
- SSDEEP 12288:bpwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIXn/q:twAcu99lPzvxP+Bsz2XjWTRMQckkIXnC
- MD5 SHA1 SHA512 SSDEEP