18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f

General

Target
18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
Size 4.2MB
Sample261014-knmsmsfc95
SHA256 18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f
MD5 04ca9805257d809a27e83e5c8556d9c9
SHA1 c8b44bafb3c9eb843b6291a830b8a1c87d8ccd2b
SHA512 d9113d6fb8026c063d7c69f68d5adc1bdf126b0136ecab343bb6275d6ed1825e7635d4d28381db789bd7395ebc6ea8a184d0c912a864feaffa0394c769a8067d
SSDEEP 49152:DV8T2iaqKZzMLDBJGCa//VThMY+2plID6znMKSyklFV2PJ5yyqM5zlmHCSjdidYe:DWa5q65CMnMbCMKdPJT5zIHCSjPAO
TLSH
T1E2268E10D7419127F4F300F6C6BE467AAD247B30232594DBA3C46E5E6BB46D1BA31B2B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

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.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe

Drops file in System32 directory 18 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\OpenSSH\ssh-agent.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\AppVClient.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\System32\GameInputSvc.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\System32\msdtc.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\PerceptionSimulation\PerceptionSimulationService.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\System32\ReFsDedupSvc.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\System32\SensorDataService.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\System32\vds.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\SysWow64\perfhost.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\System32\snmptrap.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\AgentService.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\Sgrm\SgrmBroker.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\msiexec.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\locator.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\vssvc.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\System32\alg.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\TieringEngineService.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Windows\system32\wbengine.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	\??\c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\MsSense.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Program Files\Windows Defender\NisSrv.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	2156	18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe

C:\Users\Admin\AppData\Local\Temp\18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe
"C:\Users\Admin\AppData\Local\Temp\18ecbc71bcf39a72fe431cfab9176b08a83150b24894cfb73845df41f2b9961f.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2156