Analysis
- max time kernel
150s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
03/04/2024, 09:45
General
- Target 2024-04-03_032f5228d1b8e52c8b9af62fa25a7503_ryuk.exe
- Size 1.1MB
- Sample240403-lrbp8acb75
- SHA256 02b26496effe7446dd6b3126ca85482e69d0239d6e7310fb1f0f767555fc2723
Malware Config
Signatures
- Executes dropped EXE 12 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Drops file in System32 directory 22 IoCs
- Drops file in Program Files directory 64 IoCs
- Drops file in Windows directory 4 IoCs
- Checks SCSI registry key(s) 3 TTPs 36 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Modifies data under HKEY_USERS 5 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: LoadsDriver 2 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-04-03_032f5228d1b8e52c8b9af62fa25a7503_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-03_032f5228d1b8e52c8b9af62fa25a7503_ryuk.exe"1⤵
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\System32\alg.exeC:\Windows\System32\alg.exe1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exeC:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exe1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv1⤵
-
C:\Windows\system32\fxssvc.exeC:\Windows\system32\fxssvc.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
-
C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"1⤵
- Executes dropped EXE
-
C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\elevation_service.exe"C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\elevation_service.exe"1⤵
- Executes dropped EXE
-
C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"1⤵
- Executes dropped EXE
-
C:\Windows\System32\msdtc.exeC:\Windows\System32\msdtc.exe1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
-
\??\c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE"c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE"1⤵
- Executes dropped EXE
-
C:\Windows\system32\PerceptionSimulation\PerceptionSimulationService.exeC:\Windows\system32\PerceptionSimulation\PerceptionSimulationService.exe1⤵
- Executes dropped EXE
-
C:\Windows\SysWow64\perfhost.exeC:\Windows\SysWow64\perfhost.exe1⤵
- Executes dropped EXE
-
C:\Windows\system32\locator.exeC:\Windows\system32\locator.exe1⤵
- Executes dropped EXE
-
C:\Windows\System32\SensorDataService.exeC:\Windows\System32\SensorDataService.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
elevation_service.exe
maintenanceservice.exe
7z.exe
7zFM.exe
7zG.exe
Uninstall.exe
AppVShNotify.exe
IntegratedOffice.exe
MavInject32.exe
OfficeC2RClient.exe
appvcleaner.exe
LICLUA.EXE
OSE.EXE
VSTOInstaller.exe
chrmstp.exe
setup.exe
chrome_pwa_launcher.exe
elevation_service.exe
notification_helper.exe
chrome_proxy.exe
appletviewer.exe
extcheck.exe
idlj.exe
jabswitch.exe
jar.exe
jarsigner.exe
java-rmi.exe
java.exe
javac.exe
javadoc.exe
javafxpackager.exe
javah.exe
javap.exe
javapackager.exe
javaw.exe
javaws.exe
jcmd.exe
jconsole.exe
jdb.exe
jdeps.exe
jhat.exe
jinfo.exe
jjs.exe
jmap.exe
jps.exe
jrunscript.exe
jsadebugd.exe
jstack.exe
jstat.exe
dotnet.exe
perfhost.exe
DiagnosticsHub.StandardCollector.Service.exe
FXSSVC.exe
Locator.exe
PerceptionSimulationService.exe
SensorDataService.exe
alg.exe
msdtc.exe
AppVClient.exe
msiexec.exe
office2016setup.exe
memory/616-13-0x00000000006E0000-0x0000000000740000-memory.dmp
memory/616-76-0x0000000140000000-0x00000001400AA000-memory.dmp
memory/616-14-0x0000000140000000-0x00000001400AA000-memory.dmp
memory/616-20-0x00000000006E0000-0x0000000000740000-memory.dmp
memory/1096-142-0x0000000000670000-0x00000000006D7000-memory.dmp
memory/1096-135-0x0000000000400000-0x0000000000497000-memory.dmp
memory/1096-343-0x0000000000400000-0x0000000000497000-memory.dmp
memory/2716-296-0x0000000140000000-0x00000001400CF000-memory.dmp
memory/2716-115-0x00000000008F0000-0x0000000000950000-memory.dmp
memory/2716-107-0x0000000140000000-0x00000001400CF000-memory.dmp
memory/2960-170-0x0000000000720000-0x0000000000780000-memory.dmp
memory/2960-342-0x0000000000720000-0x0000000000780000-memory.dmp
memory/2960-341-0x0000000140000000-0x00000001401D7000-memory.dmp
memory/2960-160-0x0000000140000000-0x00000001401D7000-memory.dmp
memory/3240-58-0x0000000000920000-0x0000000000980000-memory.dmp
memory/3240-122-0x0000000140000000-0x0000000140237000-memory.dmp
memory/3240-50-0x0000000140000000-0x0000000140237000-memory.dmp
memory/3240-49-0x0000000000920000-0x0000000000980000-memory.dmp
memory/3260-146-0x0000000140000000-0x0000000140095000-memory.dmp
memory/3260-154-0x0000000000770000-0x00000000007D0000-memory.dmp
memory/3260-344-0x0000000140000000-0x0000000140095000-memory.dmp
memory/3584-338-0x0000000000B90000-0x0000000000BF0000-memory.dmp
memory/3584-335-0x0000000140000000-0x00000001400AB000-memory.dmp
memory/3584-124-0x0000000140000000-0x00000001400AB000-memory.dmp
memory/3584-129-0x0000000000B90000-0x0000000000BF0000-memory.dmp
memory/3720-78-0x0000000140000000-0x00000001400CA000-memory.dmp
memory/3720-75-0x0000000000CD0000-0x0000000000D30000-memory.dmp
memory/3720-90-0x0000000140000000-0x00000001400CA000-memory.dmp
memory/3720-88-0x0000000000CD0000-0x0000000000D30000-memory.dmp
memory/3720-83-0x0000000000CD0000-0x0000000000D30000-memory.dmp
memory/4104-167-0x0000000000D10000-0x0000000000D70000-memory.dmp
memory/4104-100-0x0000000000D10000-0x0000000000D70000-memory.dmp
memory/4104-95-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/4104-93-0x0000000000D10000-0x0000000000D70000-memory.dmp
memory/4104-158-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/4544-92-0x0000000140000000-0x00000001400A9000-memory.dmp
memory/4544-26-0x0000000140000000-0x00000001400A9000-memory.dmp
memory/4544-27-0x0000000000720000-0x0000000000780000-memory.dmp
memory/4544-34-0x0000000000720000-0x0000000000780000-memory.dmp
memory/4736-45-0x0000000000E80000-0x0000000000EE0000-memory.dmp
memory/4736-38-0x0000000140000000-0x0000000140135000-memory.dmp
memory/4736-60-0x0000000140000000-0x0000000140135000-memory.dmp
memory/4736-39-0x0000000000E80000-0x0000000000EE0000-memory.dmp
memory/4736-55-0x0000000000E80000-0x0000000000EE0000-memory.dmp
memory/5004-175-0x0000000140000000-0x0000000140125000-memory.dmp
memory/5004-177-0x00000000021B0000-0x0000000002210000-memory.dmp
memory/5004-1-0x0000000140000000-0x0000000140125000-memory.dmp
memory/5004-64-0x0000000140000000-0x0000000140125000-memory.dmp
memory/5004-8-0x00000000021B0000-0x0000000002210000-memory.dmp
memory/5004-0-0x00000000021B0000-0x0000000002210000-memory.dmp
memory/5096-134-0x0000000140000000-0x000000014022B000-memory.dmp
memory/5096-63-0x00000000001A0000-0x0000000000200000-memory.dmp
memory/5096-66-0x0000000140000000-0x000000014022B000-memory.dmp
memory/5096-71-0x00000000001A0000-0x0000000000200000-memory.dmp