Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17-10-2024 01:56
Static task
static1
Behavioral task
behavioral1
Sample
8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe
Resource
win7-20240708-en
General
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Target
8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe
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Size
74KB
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MD5
ff2df00e788749ba0f2ca8c29a35030c
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SHA1
9638e9861cdd6a8b5e4aad28739ebd62ab12b6a1
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SHA256
8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7
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SHA512
76e3323f797e557a72be2242961829f410c17be3b7d605075c0c05676d8a0fca6d108e47fb250219da010f0ad64c92f56d8db3b6f913b7c5000591434ec253db
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SSDEEP
192:H5w4ZVQffbuVBiRAljEEJxTqthTcPcPcPcPcPcPcPcPcPcPcPcPcPcPcPcPcPcPx:H5w4ZV0G06uEuOm6S6666
Malware Config
Signatures
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Modifies security service 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\Start = "4" sysvplervcs.exe -
Phorphiex payload 1 IoCs
resource yara_rule behavioral2/files/0x000b000000023b8b-4.dat family_phorphiex -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" sysvplervcs.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2588 powershell.exe -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation 8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation sysvplervcs.exe Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation 2055424237.exe -
Executes dropped EXE 5 IoCs
pid Process 4460 8642.scr 4464 sysvplervcs.exe 1116 2055424237.exe 944 2425915552.exe 948 741411052.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiSpywareOverride = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" sysvplervcs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" sysvplervcs.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Settings = "C:\\Windows\\sysvplervcs.exe" 8642.scr -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\sysvplervcs.exe 8642.scr File opened for modification C:\Windows\sysvplervcs.exe 8642.scr -
Launches sc.exe 5 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 4616 sc.exe 4984 sc.exe 4324 sc.exe 2816 sc.exe 5104 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 13 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8642.scr Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sysvplervcs.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2425915552.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 741411052.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2588 powershell.exe 2588 powershell.exe 1116 2055424237.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2588 powershell.exe Token: SeDebugPrivilege 1116 2055424237.exe -
Suspicious use of WriteProcessMemory 46 IoCs
description pid Process procid_target PID 4816 wrote to memory of 4460 4816 8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe 94 PID 4816 wrote to memory of 4460 4816 8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe 94 PID 4816 wrote to memory of 4460 4816 8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe 94 PID 4460 wrote to memory of 4464 4460 8642.scr 95 PID 4460 wrote to memory of 4464 4460 8642.scr 95 PID 4460 wrote to memory of 4464 4460 8642.scr 95 PID 4464 wrote to memory of 5116 4464 sysvplervcs.exe 98 PID 4464 wrote to memory of 5116 4464 sysvplervcs.exe 98 PID 4464 wrote to memory of 5116 4464 sysvplervcs.exe 98 PID 4464 wrote to memory of 2888 4464 sysvplervcs.exe 99 PID 4464 wrote to memory of 2888 4464 sysvplervcs.exe 99 PID 4464 wrote to memory of 2888 4464 sysvplervcs.exe 99 PID 5116 wrote to memory of 2588 5116 cmd.exe 102 PID 5116 wrote to memory of 2588 5116 cmd.exe 102 PID 5116 wrote to memory of 2588 5116 cmd.exe 102 PID 2888 wrote to memory of 4984 2888 cmd.exe 103 PID 2888 wrote to memory of 4984 2888 cmd.exe 103 PID 2888 wrote to memory of 4984 2888 cmd.exe 103 PID 2888 wrote to memory of 4324 2888 cmd.exe 104 PID 2888 wrote to memory of 4324 2888 cmd.exe 104 PID 2888 wrote to memory of 4324 2888 cmd.exe 104 PID 2888 wrote to memory of 2816 2888 cmd.exe 105 PID 2888 wrote to memory of 2816 2888 cmd.exe 105 PID 2888 wrote to memory of 2816 2888 cmd.exe 105 PID 2888 wrote to memory of 5104 2888 cmd.exe 106 PID 2888 wrote to memory of 5104 2888 cmd.exe 106 PID 2888 wrote to memory of 5104 2888 cmd.exe 106 PID 2888 wrote to memory of 4616 2888 cmd.exe 107 PID 2888 wrote to memory of 4616 2888 cmd.exe 107 PID 2888 wrote to memory of 4616 2888 cmd.exe 107 PID 4464 wrote to memory of 1116 4464 sysvplervcs.exe 119 PID 4464 wrote to memory of 1116 4464 sysvplervcs.exe 119 PID 1116 wrote to memory of 2012 1116 2055424237.exe 120 PID 1116 wrote to memory of 2012 1116 2055424237.exe 120 PID 1116 wrote to memory of 5112 1116 2055424237.exe 122 PID 1116 wrote to memory of 5112 1116 2055424237.exe 122 PID 2012 wrote to memory of 4620 2012 cmd.exe 124 PID 2012 wrote to memory of 4620 2012 cmd.exe 124 PID 5112 wrote to memory of 888 5112 cmd.exe 125 PID 5112 wrote to memory of 888 5112 cmd.exe 125 PID 4464 wrote to memory of 944 4464 sysvplervcs.exe 126 PID 4464 wrote to memory of 944 4464 sysvplervcs.exe 126 PID 4464 wrote to memory of 944 4464 sysvplervcs.exe 126 PID 4464 wrote to memory of 948 4464 sysvplervcs.exe 138 PID 4464 wrote to memory of 948 4464 sysvplervcs.exe 138 PID 4464 wrote to memory of 948 4464 sysvplervcs.exe 138 -
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\8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe"C:\Users\Admin\AppData\Local\Temp\8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4816 -
C:\Users\Admin\AppData\Local\Temp\8642.scr"C:\Users\Admin\AppData\Local\Temp\8642.scr" /S2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4460 -
C:\Windows\sysvplervcs.exeC:\Windows\sysvplervcs.exe3⤵
- Modifies security service
- Windows security bypass
- Checks computer location settings
- Executes dropped EXE
- Windows security modification
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4464 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath $env:windir; Add-MpPreference -ExclusionPath $env:TEMP; Add-MpPreference -ExclusionPath $env:USERPROFILE"4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5116 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command "Add-MpPreference -ExclusionPath $env:windir; Add-MpPreference -ExclusionPath $env:TEMP; Add-MpPreference -ExclusionPath $env:USERPROFILE"5⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2588
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop DoSvc & sc stop BITS /wait4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888 -
C:\Windows\SysWOW64\sc.exesc stop UsoSvc5⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4984
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C:\Windows\SysWOW64\sc.exesc stop WaaSMedicSvc5⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4324
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C:\Windows\SysWOW64\sc.exesc stop wuauserv5⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2816
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C:\Windows\SysWOW64\sc.exesc stop DoSvc5⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:5104
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C:\Windows\SysWOW64\sc.exesc stop BITS /wait5⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4616
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C:\Users\Admin\AppData\Local\Temp\2055424237.exeC:\Users\Admin\AppData\Local\Temp\2055424237.exe4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f5⤵
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Windows\system32\reg.exereg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f6⤵PID:4620
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Windows Upgrade Manager"5⤵
- Suspicious use of WriteProcessMemory
PID:5112 -
C:\Windows\system32\schtasks.exeschtasks /delete /f /tn "Windows Upgrade Manager"6⤵PID:888
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C:\Users\Admin\AppData\Local\Temp\2425915552.exeC:\Users\Admin\AppData\Local\Temp\2425915552.exe4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:944
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C:\Users\Admin\AppData\Local\Temp\741411052.exeC:\Users\Admin\AppData\Local\Temp\741411052.exe4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:948
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1System Services
1Service Execution
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Replay Monitor
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Downloads
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Filesize
108KB
MD51fcb78fb6cf9720e9d9494c42142d885
SHA1fef9c2e728ab9d56ce9ed28934b3182b6f1d5379
SHA25684652bb8c63ca4fd7eb7a2d6ef44029801f3057aa2961867245a3a765928dd02
SHA512cdf58e463af1784aea86995b3e5d6b07701c5c4095e30ec80cc901ffd448c6f4f714c521bf8796ffa8c47538bf8bf5351e157596efaa7ab88155d63dc33f7dc3
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Filesize
8KB
MD5cb8420e681f68db1bad5ed24e7b22114
SHA1416fc65d538d3622f5ca71c667a11df88a927c31
SHA2565850892f67f85991b31fc90f62c8b7791afeb3c08ae1877d857aa2b59471a2ea
SHA512baaabcc4ad5d409267a34ed7b20e4afb4d247974bfc581d39aae945e5bf8a673a1f8eacae2e6783480c8baaeb0a80d028274a202d456f13d0af956afa0110fdf
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Filesize
15KB
MD50c37ee292fec32dba0420e6c94224e28
SHA1012cbdddaddab319a4b3ae2968b42950e929c46b
SHA256981d724feebc36777e99513dc061d1f009e589f965c920797285c46d863060d1
SHA5122b60b571c55d0441ba0cfc695f9db5cd12660ebec7effc7e893c3b7a1c6cb6149df487c31b8d748697e260cbc4af29331592b705ea9638f64a711c7a6164628b
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Filesize
10KB
MD596509ab828867d81c1693b614b22f41d
SHA1c5f82005dbda43cedd86708cc5fc3635a781a67e
SHA256a9de2927b0ec45cf900508fec18531c04ee9fa8a5dfe2fc82c67d9458cf4b744
SHA512ff603117a06da8fb2386c1d2049a5896774e41f34d05951ecd4e7b5fc9da51a373e3fcf61af3577ff78490cf898471ce8e71eae848a12812fe98cd7e76e1a9ca
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Filesize
96KB
MD5930c41bc0c20865af61a95bcf0c3b289
SHA1cecf37c3b6c76d9a79dd2a97cfc518621a6ac924
SHA2561f2e9724dfb091059ae16c305601e21d64b5308df76ddef6b394573e576ef1ff
SHA512fa1f33c71da608b3980038981220fcebee0b0cc44331e52f5198dd2761c97631ee8286756c2cc16245a1370c83bb53cc8ea8ef64e0fcdd30af51f023973986b2
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82