Malware Analysis Report

2024-11-30 02:05

Sample ID 241116-mlb98svdnd
Target DCRatBuild.exe
SHA256 d9cbcae95ae824014b6d2fd6d3269b00b09ab84ed44b45b21c0b1842e7cdc132
Tags
rat dcrat discovery infostealer persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d9cbcae95ae824014b6d2fd6d3269b00b09ab84ed44b45b21c0b1842e7cdc132

Threat Level: Known bad

The file DCRatBuild.exe was found to be: Known bad.

Malicious Activity Summary

rat dcrat discovery infostealer persistence

Process spawned unexpected child process

Modifies WinLogon for persistence

DcRat

Dcrat family

DCRat payload

DCRat payload

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Adds Run key to start application

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Scheduled Task/Job: Scheduled Task

Modifies registry class

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-16 10:32

Signatures

DCRat payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Dcrat family

dcrat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-16 10:32

Reported

2024-11-16 10:33

Platform

win7-20240903-en

Max time kernel

8s

Max time network

2s

Command Line

"C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"

Signatures

DcRat

rat infostealer dcrat

Dcrat family

dcrat

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\lsass.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\lsass.exe\", \"C:\\Program Files\\DVD Maker\\es-ES\\taskhost.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\lsass.exe\", \"C:\\Program Files\\DVD Maker\\es-ES\\taskhost.exe\", \"C:\\Program Files (x86)\\Microsoft Sync Framework\\v1.0\\Documentation\\cmd.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\lsass.exe\", \"C:\\Program Files\\DVD Maker\\es-ES\\taskhost.exe\", \"C:\\Program Files (x86)\\Microsoft Sync Framework\\v1.0\\Documentation\\cmd.exe\", \"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\services.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe

DCRat payload

rat
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PortproviderRuntime\Bridgewebsvc.exe N/A
N/A N/A C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\cmd = "\"C:\\Program Files (x86)\\Microsoft Sync Framework\\v1.0\\Documentation\\cmd.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cmd = "\"C:\\Program Files (x86)\\Microsoft Sync Framework\\v1.0\\Documentation\\cmd.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\services.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\services.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\lsass.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\Recovery\\20e7eb62-69f6-11ef-be0c-62cb582c238c\\lsass.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\taskhost = "\"C:\\Program Files\\DVD Maker\\es-ES\\taskhost.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskhost = "\"C:\\Program Files\\DVD Maker\\es-ES\\taskhost.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\DVD Maker\es-ES\taskhost.exe C:\PortproviderRuntime\Bridgewebsvc.exe N/A
File created C:\Program Files\DVD Maker\es-ES\b75386f1303e64 C:\PortproviderRuntime\Bridgewebsvc.exe N/A
File created C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe C:\PortproviderRuntime\Bridgewebsvc.exe N/A
File created C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\ebf1f9fa8afd6d C:\PortproviderRuntime\Bridgewebsvc.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WScript.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\PortproviderRuntime\Bridgewebsvc.exe N/A
N/A N/A C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1992 wrote to memory of 2280 N/A C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe C:\Windows\SysWOW64\WScript.exe
PID 1992 wrote to memory of 2280 N/A C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe C:\Windows\SysWOW64\WScript.exe
PID 1992 wrote to memory of 2280 N/A C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe C:\Windows\SysWOW64\WScript.exe
PID 1992 wrote to memory of 2280 N/A C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe C:\Windows\SysWOW64\WScript.exe
PID 2280 wrote to memory of 2400 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2280 wrote to memory of 2400 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2280 wrote to memory of 2400 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2280 wrote to memory of 2400 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2400 wrote to memory of 2676 N/A C:\Windows\SysWOW64\cmd.exe C:\PortproviderRuntime\Bridgewebsvc.exe
PID 2400 wrote to memory of 2676 N/A C:\Windows\SysWOW64\cmd.exe C:\PortproviderRuntime\Bridgewebsvc.exe
PID 2400 wrote to memory of 2676 N/A C:\Windows\SysWOW64\cmd.exe C:\PortproviderRuntime\Bridgewebsvc.exe
PID 2400 wrote to memory of 2676 N/A C:\Windows\SysWOW64\cmd.exe C:\PortproviderRuntime\Bridgewebsvc.exe
PID 2676 wrote to memory of 1596 N/A C:\PortproviderRuntime\Bridgewebsvc.exe C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe
PID 2676 wrote to memory of 1596 N/A C:\PortproviderRuntime\Bridgewebsvc.exe C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe
PID 2676 wrote to memory of 1596 N/A C:\PortproviderRuntime\Bridgewebsvc.exe C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe

"C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\PortproviderRuntime\2jiE6dDNxF2hUpVE5Z.vbe"

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\PortproviderRuntime\OI2YygSphQCiiCNA7ofzvo.bat" "

C:\PortproviderRuntime\Bridgewebsvc.exe

"C:\PortproviderRuntime\Bridgewebsvc.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\lsass.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\lsass.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\lsass.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 6 /tr "'C:\Program Files\DVD Maker\es-ES\taskhost.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files\DVD Maker\es-ES\taskhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 14 /tr "'C:\Program Files\DVD Maker\es-ES\taskhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\services.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\services.exe'" /rl HIGHEST /f

C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe

"C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\cmd.exe"

Network

N/A

Files

C:\PortproviderRuntime\2jiE6dDNxF2hUpVE5Z.vbe

MD5 413767cf51f36f7f50d9430d73ea0bb1
SHA1 4469733bce94a114c836ea3591dccb3e689782c7
SHA256 2e118668b3c63457b924aafd6b402e105477030d6157e3d66ba8ba7acad58dcf
SHA512 3c12a46412227f57f8aa815b0b7820ca54eb3fa7a033ea7baa7efad7526755db7998d843a6790880efa87b841e9c6085b793930ae865c2694c8385e5937ee900

C:\PortproviderRuntime\OI2YygSphQCiiCNA7ofzvo.bat

MD5 863d81db66a0a5864890665ea50c23c5
SHA1 f5a584f4ee5e390b667eaa5e5d9332251388fa7e
SHA256 d4fa2e3203a21efd9f46fd9ea5fcedbabe13bd9a2bc93d0169070507380bbf9b
SHA512 ecb8ff338e0febcfe8965516a58dcdcd63420592467ce1c281f7ccacf7a2ca02bd7a73d52208e98edec3e73ea69477f3ccaa4ddf4b0608e5598a92e110e5d3b0

\PortproviderRuntime\Bridgewebsvc.exe

MD5 fddea23e803e9e5de212e4c0475c8f93
SHA1 c4426bf36ce54917155da2bfbec1508c5a799664
SHA256 f014b4dd1600fb5ecd92de55165573415c2d7ee184a4f70f2f975ee7909150f6
SHA512 05459fc75998ee306e8de7e544aaf744e5c6e1930dcb7e02b94a566a7ad6e874a9fe50a78a1da50b4e7110282e49353f8ced586117d772b600b84d09ee070591

memory/2676-13-0x00000000010C0000-0x0000000001196000-memory.dmp

memory/1596-28-0x0000000001380000-0x0000000001456000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-16 10:32

Reported

2024-11-16 10:33

Platform

win10v2004-20241007-en

Max time kernel

36s

Max time network

37s

Command Line

"C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"

Signatures

DcRat

rat infostealer dcrat

Dcrat family

dcrat

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Internet Explorer\\SIGNUP\\SppExtComObj.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Internet Explorer\\SIGNUP\\SppExtComObj.exe\", \"C:\\PortproviderRuntime\\RuntimeBroker.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe

DCRat payload

rat
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation C:\Windows\SysWOW64\WScript.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation C:\PortproviderRuntime\Bridgewebsvc.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PortproviderRuntime\Bridgewebsvc.exe N/A
N/A N/A C:\PortproviderRuntime\RuntimeBroker.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\PortproviderRuntime\\RuntimeBroker.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Program Files (x86)\\Internet Explorer\\SIGNUP\\SppExtComObj.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Program Files (x86)\\Internet Explorer\\SIGNUP\\SppExtComObj.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\PortproviderRuntime\\RuntimeBroker.exe\"" C:\PortproviderRuntime\Bridgewebsvc.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Internet Explorer\SIGNUP\e1ef82546f0b02 C:\PortproviderRuntime\Bridgewebsvc.exe N/A
File created C:\Program Files (x86)\Internet Explorer\SIGNUP\SppExtComObj.exe C:\PortproviderRuntime\Bridgewebsvc.exe N/A
File opened for modification C:\Program Files (x86)\Internet Explorer\SIGNUP\SppExtComObj.exe C:\PortproviderRuntime\Bridgewebsvc.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WScript.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings C:\PortproviderRuntime\Bridgewebsvc.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\PortproviderRuntime\Bridgewebsvc.exe N/A
N/A N/A C:\PortproviderRuntime\RuntimeBroker.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\PortproviderRuntime\Bridgewebsvc.exe N/A
Token: SeDebugPrivilege N/A C:\PortproviderRuntime\RuntimeBroker.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3344 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe C:\Windows\SysWOW64\WScript.exe
PID 3344 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe C:\Windows\SysWOW64\WScript.exe
PID 3344 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe C:\Windows\SysWOW64\WScript.exe
PID 4428 wrote to memory of 740 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 4428 wrote to memory of 740 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 4428 wrote to memory of 740 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 740 wrote to memory of 3392 N/A C:\Windows\SysWOW64\cmd.exe C:\PortproviderRuntime\Bridgewebsvc.exe
PID 740 wrote to memory of 3392 N/A C:\Windows\SysWOW64\cmd.exe C:\PortproviderRuntime\Bridgewebsvc.exe
PID 3392 wrote to memory of 4576 N/A C:\PortproviderRuntime\Bridgewebsvc.exe C:\Windows\System32\cmd.exe
PID 3392 wrote to memory of 4576 N/A C:\PortproviderRuntime\Bridgewebsvc.exe C:\Windows\System32\cmd.exe
PID 4576 wrote to memory of 3948 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 4576 wrote to memory of 3948 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 4576 wrote to memory of 3872 N/A C:\Windows\System32\cmd.exe C:\PortproviderRuntime\RuntimeBroker.exe
PID 4576 wrote to memory of 3872 N/A C:\Windows\System32\cmd.exe C:\PortproviderRuntime\RuntimeBroker.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe

"C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\PortproviderRuntime\2jiE6dDNxF2hUpVE5Z.vbe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\PortproviderRuntime\OI2YygSphQCiiCNA7ofzvo.bat" "

C:\PortproviderRuntime\Bridgewebsvc.exe

"C:\PortproviderRuntime\Bridgewebsvc.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Internet Explorer\SIGNUP\SppExtComObj.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\SIGNUP\SppExtComObj.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Internet Explorer\SIGNUP\SppExtComObj.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\PortproviderRuntime\RuntimeBroker.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\PortproviderRuntime\RuntimeBroker.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\PortproviderRuntime\RuntimeBroker.exe'" /rl HIGHEST /f

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\ZEdnyHxDOI.bat"

C:\Windows\system32\w32tm.exe

w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2

C:\PortproviderRuntime\RuntimeBroker.exe

"C:\PortproviderRuntime\RuntimeBroker.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 f1008885.xsph.ru udp
RU 141.8.197.42:80 f1008885.xsph.ru tcp
RU 141.8.197.42:80 f1008885.xsph.ru tcp
US 8.8.8.8:53 42.197.8.141.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 85.49.80.91.in-addr.arpa udp

Files

C:\PortproviderRuntime\2jiE6dDNxF2hUpVE5Z.vbe

MD5 413767cf51f36f7f50d9430d73ea0bb1
SHA1 4469733bce94a114c836ea3591dccb3e689782c7
SHA256 2e118668b3c63457b924aafd6b402e105477030d6157e3d66ba8ba7acad58dcf
SHA512 3c12a46412227f57f8aa815b0b7820ca54eb3fa7a033ea7baa7efad7526755db7998d843a6790880efa87b841e9c6085b793930ae865c2694c8385e5937ee900

C:\PortproviderRuntime\OI2YygSphQCiiCNA7ofzvo.bat

MD5 863d81db66a0a5864890665ea50c23c5
SHA1 f5a584f4ee5e390b667eaa5e5d9332251388fa7e
SHA256 d4fa2e3203a21efd9f46fd9ea5fcedbabe13bd9a2bc93d0169070507380bbf9b
SHA512 ecb8ff338e0febcfe8965516a58dcdcd63420592467ce1c281f7ccacf7a2ca02bd7a73d52208e98edec3e73ea69477f3ccaa4ddf4b0608e5598a92e110e5d3b0

C:\PortproviderRuntime\Bridgewebsvc.exe

MD5 fddea23e803e9e5de212e4c0475c8f93
SHA1 c4426bf36ce54917155da2bfbec1508c5a799664
SHA256 f014b4dd1600fb5ecd92de55165573415c2d7ee184a4f70f2f975ee7909150f6
SHA512 05459fc75998ee306e8de7e544aaf744e5c6e1930dcb7e02b94a566a7ad6e874a9fe50a78a1da50b4e7110282e49353f8ced586117d772b600b84d09ee070591

memory/3392-12-0x00007FFC49BF0000-0x00007FFC49EB9000-memory.dmp

memory/3392-13-0x00000000003F0000-0x00000000004C6000-memory.dmp

memory/3392-23-0x00007FFC49BF0000-0x00007FFC49EB9000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\ZEdnyHxDOI.bat

MD5 7b2cdab8658b61c32110d7b69414b3dd
SHA1 073343d2263cbaef3620da605a608f6df2ba7a4c
SHA256 2057dede2320c0f93e20076a57193ba5c4c38ed791cfdb3b7f3bf38b42b56bea
SHA512 1e052b0b65fcefe6bb426c00155eabe367750e82b6e0dc8f4b3843e8c734c3e8764de2c3522eccb138ce0b9bc5b96c77c2ecc2badafc7b1dd298830c175baf39