Analysis
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max time kernel
94s -
max time network
96s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
04-12-2024 18:05
Behavioral task
behavioral1
Sample
73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe
Resource
win10v2004-20241007-en
General
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Target
73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe
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Size
952KB
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MD5
dc100730c11f4a70e5324f4a0a0358f2
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SHA1
561a80a6284540fe9f3c30a2495f51c9e1077ab0
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SHA256
73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15
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SHA512
d8f497520b432fa8ebd07d39a8b922b38f1dc9a954ad9646ec46c456e4476a1e856826497a23525a33690ce464796c65db9714a86e9d6af922aecc8ee85772e6
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SSDEEP
24576:e+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXXn:Z8/KfRTKN
Malware Config
Signatures
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Dcrat family
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Modifies WinLogon for persistence 2 TTPs 8 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\drvsetup\\dllhost.exe\", \"C:\\PerfLogs\\sppsvc.exe\", \"C:\\PerfLogs\\System.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\drvsetup\\dllhost.exe\", \"C:\\PerfLogs\\sppsvc.exe\", \"C:\\PerfLogs\\System.exe\", \"C:\\Windows\\System32\\KBDINPUN\\winlogon.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\drvsetup\\dllhost.exe\", \"C:\\PerfLogs\\sppsvc.exe\", \"C:\\PerfLogs\\System.exe\", \"C:\\Windows\\System32\\KBDINPUN\\winlogon.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\drvsetup\\dllhost.exe\", \"C:\\PerfLogs\\sppsvc.exe\", \"C:\\PerfLogs\\System.exe\", \"C:\\Windows\\System32\\KBDINPUN\\winlogon.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Admin\\Local Settings\\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\drvsetup\\dllhost.exe\", \"C:\\PerfLogs\\sppsvc.exe\", \"C:\\PerfLogs\\System.exe\", \"C:\\Windows\\System32\\KBDINPUN\\winlogon.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Admin\\Local Settings\\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe\", \"C:\\Windows\\SystemApps\\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\\resources\\StartMenuExperienceHost.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\drvsetup\\dllhost.exe\", \"C:\\PerfLogs\\sppsvc.exe\", \"C:\\PerfLogs\\System.exe\", \"C:\\Windows\\System32\\KBDINPUN\\winlogon.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Admin\\Local Settings\\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe\", \"C:\\Windows\\SystemApps\\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\\resources\\StartMenuExperienceHost.exe\", \"C:\\Users\\Default\\My Documents\\Registry.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\drvsetup\\dllhost.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\drvsetup\\dllhost.exe\", \"C:\\PerfLogs\\sppsvc.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
Process spawned unexpected child process 8 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1896 4876 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4880 4876 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 316 4876 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4460 4876 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4024 4876 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2312 4876 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4992 4876 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3024 4876 schtasks.exe 82 -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" dllhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" dllhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" dllhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
resource yara_rule behavioral2/memory/2600-1-0x0000000000D60000-0x0000000000E54000-memory.dmp dcrat behavioral2/files/0x0008000000023c0a-20.dat dcrat behavioral2/files/0x000a000000023c4e-41.dat dcrat behavioral2/files/0x000b000000023bca-52.dat dcrat behavioral2/files/0x000a000000023bd0-63.dat dcrat behavioral2/files/0x000a000000023bd5-74.dat dcrat behavioral2/memory/2384-135-0x0000000000E50000-0x0000000000F44000-memory.dmp dcrat -
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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
Executes dropped EXE 1 IoCs
pid Process 2384 dllhost.exe -
Adds Run key to start application 2 TTPs 16 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\StartMenuExperienceHost = "\"C:\\Windows\\SystemApps\\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\\resources\\StartMenuExperienceHost.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Registry = "\"C:\\Users\\Default\\My Documents\\Registry.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Windows\\System32\\drvsetup\\dllhost.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Windows\\System32\\KBDINPUN\\winlogon.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Windows\\System32\\KBDINPUN\\winlogon.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\PerfLogs\\sppsvc.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\PerfLogs\\System.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15 = "\"C:\\Users\\Admin\\Local Settings\\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\StartMenuExperienceHost = "\"C:\\Windows\\SystemApps\\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\\resources\\StartMenuExperienceHost.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\PerfLogs\\sppsvc.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\PerfLogs\\System.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15 = "\"C:\\Users\\Admin\\Local Settings\\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Windows\\System32\\drvsetup\\dllhost.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Registry = "\"C:\\Users\\Default\\My Documents\\Registry.exe\"" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA dllhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" dllhost.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
Drops file in System32 directory 10 IoCs
description ioc Process File opened for modification C:\Windows\System32\drvsetup\dllhost.exe 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File created C:\Windows\System32\KBDINPUN\winlogon.exe 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File opened for modification C:\Windows\System32\drvsetup\RCX903C.tmp 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File opened for modification C:\Windows\System32\drvsetup\RCX90BA.tmp 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File opened for modification C:\Windows\System32\KBDINPUN\RCX97F2.tmp 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File opened for modification C:\Windows\System32\KBDINPUN\RCX9861.tmp 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File opened for modification C:\Windows\System32\KBDINPUN\winlogon.exe 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File created C:\Windows\System32\drvsetup\dllhost.exe 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File created C:\Windows\System32\drvsetup\5940a34987c99120d96dace90a3f93f329dcad63 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File created C:\Windows\System32\KBDINPUN\cc11b995f2a76da408ea6a601e682e64743153ad 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
Drops file in Windows directory 5 IoCs
description ioc Process File created C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\resources\StartMenuExperienceHost.exe 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File created C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\resources\55b276f4edf653fe07efe8f1ecc32d3d195abd16 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File opened for modification C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\resources\RCX9EFD.tmp 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File opened for modification C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\resources\RCX9F0E.tmp 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe File opened for modification C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\resources\StartMenuExperienceHost.exe 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4992 schtasks.exe 3024 schtasks.exe 1896 schtasks.exe 4880 schtasks.exe 316 schtasks.exe 4460 schtasks.exe 4024 schtasks.exe 2312 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 11 IoCs
pid Process 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Token: SeDebugPrivilege 2384 dllhost.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2600 wrote to memory of 2384 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 91 PID 2600 wrote to memory of 2384 2600 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe 91 -
System policy modification 1 TTPs 6 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" dllhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" dllhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" dllhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" 73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe"C:\Users\Admin\AppData\Local\Temp\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe"1⤵
- Modifies WinLogon for persistence
- UAC bypass
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2600 -
C:\Windows\System32\drvsetup\dllhost.exe"C:\Windows\System32\drvsetup\dllhost.exe"2⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- System policy modification
PID:2384
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\System32\drvsetup\dllhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1896
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\PerfLogs\sppsvc.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4880
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\PerfLogs\System.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:316
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\KBDINPUN\winlogon.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4460
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4024
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15" /sc ONLOGON /tr "'C:\Users\Admin\Local Settings\73eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2312
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\resources\StartMenuExperienceHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4992
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Users\Default\My Documents\Registry.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3024
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
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Filesize
952KB
MD5a8fe2e6e7e6377fbc7c729752e9245a0
SHA1d1131a868bb54ea7fd600f12138e04c1965dc093
SHA256969563ae2bb4db2c3a8b7e331b61e21c3c07f087c92b2ef441e3856ca6e425b4
SHA5124e20b26759efd2f7fed9978c41c30862d96c141a5f2c9e82c13dd050e0fa37067f9f63c3122e539a4d48d45070874508efb9966de9414703eeb157a3f1d775b3
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Filesize
952KB
MD5aa6446e759344a5c04dc8dcb19b3cdb2
SHA17c59951517334785cb6b80fdf50cd7ad7b1a9843
SHA256edfa4403c727533d892d7f8b172775e8bbce2c5caf141aac373aedc1d61413a5
SHA512b71bbf845197845fc21f834373390d7c85001632c2a5e46ed8d7213a6d2e1a0be3b06f866f314ec795c6bd7f0b8e3ec81f25c63dec9176509b1cfa931b969c42
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Filesize
952KB
MD5dc100730c11f4a70e5324f4a0a0358f2
SHA1561a80a6284540fe9f3c30a2495f51c9e1077ab0
SHA25673eaa2708311d2ac31d2a440146fccf8c44d4cf3f2413620aaad7ff096a8fe15
SHA512d8f497520b432fa8ebd07d39a8b922b38f1dc9a954ad9646ec46c456e4476a1e856826497a23525a33690ce464796c65db9714a86e9d6af922aecc8ee85772e6
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Filesize
952KB
MD5f4b9b3c9933a473df7e988ce12e94f3d
SHA1fb23d4549ba1f6d4b59325620b7aef47a9232220
SHA256d1644ddae9148c47dd32ead25e6ade0ef66d6337faf9eee4640c4e38a1b062e9
SHA5120b904474d0df2a3db6976dad1cbe837b8f5845363f8e7debf360695acc091885e7625f2083755cd82e34051e576c88c7bba8a40eef8103f8e5028d2eb6bd1ec5
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Filesize
952KB
MD551267dcdd23ef450144b1f7cb7b47c59
SHA1a6837f6b7d3ad755b5b9f15d75d0c34062d2bbbb
SHA256d2f1b54318b653aa759c603a5ef725252b7218d2ff127a5638137ea7f1b6fc81
SHA5126d85058a369c1c2696af847f5ba1dd9d3a01f94b734a0e5470b7029ab6cdbebc5c890ab987c2759be09af0077aa4ac5221b51a07f66f6096698b337ddef30949