Analysis
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max time kernel
162s -
max time network
176s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
17-02-2022 03:56
Static task
static1
Behavioral task
behavioral1
Sample
369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
General
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Target
369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe
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Size
1.9MB
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MD5
31d419dcf1a407ca78a912fec4369155
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SHA1
148931fc3308f19f113500932f0f50ea23bbf83d
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SHA256
369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539
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SHA512
aa844c1b84c83e29f6dbe281a08a8bd0af1587a7c4db26ba36bae1f00947da99afaeb7ccb967e5fa3f7f0d0a24bd8bbc9636385ac5f32de238dfd3a519b8bf98
Malware Config
Signatures
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Shurk
Shurk is an infostealer, written in C++ which appeared in 2021.
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Shurk Stealer Payload 1 IoCs
resource yara_rule behavioral2/memory/3796-140-0x0000000000961000-0x00000000009A6000-memory.dmp shurk_stealer -
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
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Executes dropped EXE 2 IoCs
pid Process 1044 Hack.sfx.exe 3796 Hack.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Hack.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Hack.exe -
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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation 369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe Key value queried \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation WScript.exe Key value queried \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation Hack.sfx.exe -
Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Wine Hack.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Hack.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 3796 Hack.exe -
Drops file in Windows directory 8 IoCs
description ioc Process File opened for modification C:\Windows\WindowsUpdate.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm svchost.exe File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log svchost.exe File opened for modification C:\Windows\Logs\CBS\CBS.log TiWorker.exe File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings 369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3796 Hack.exe 3796 Hack.exe 3796 Hack.exe 3796 Hack.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 4768 svchost.exe Token: SeCreatePagefilePrivilege 4768 svchost.exe Token: SeShutdownPrivilege 4768 svchost.exe Token: SeCreatePagefilePrivilege 4768 svchost.exe Token: SeShutdownPrivilege 4768 svchost.exe Token: SeCreatePagefilePrivilege 4768 svchost.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe Token: SeRestorePrivilege 936 TiWorker.exe Token: SeSecurityPrivilege 936 TiWorker.exe Token: SeBackupPrivilege 936 TiWorker.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3240 wrote to memory of 1440 3240 369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe 82 PID 3240 wrote to memory of 1440 3240 369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe 82 PID 3240 wrote to memory of 1440 3240 369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe 82 PID 1440 wrote to memory of 1968 1440 WScript.exe 84 PID 1440 wrote to memory of 1968 1440 WScript.exe 84 PID 1440 wrote to memory of 1968 1440 WScript.exe 84 PID 1968 wrote to memory of 1044 1968 cmd.exe 87 PID 1968 wrote to memory of 1044 1968 cmd.exe 87 PID 1968 wrote to memory of 1044 1968 cmd.exe 87 PID 1044 wrote to memory of 3796 1044 Hack.sfx.exe 88 PID 1044 wrote to memory of 3796 1044 Hack.sfx.exe 88 PID 1044 wrote to memory of 3796 1044 Hack.sfx.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe"C:\Users\Admin\AppData\Local\Temp\369b837d2a43020353233d28b132827efd0fc311b3b56f25aa1b9ba5b209a539.exe"1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3240 -
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vbs.vbs"2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1440 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c bat.bat3⤵
- Suspicious use of WriteProcessMemory
PID:1968 -
C:\Users\Admin\AppData\Local\Temp\Hack.sfx.exeHack.sfx.exe -pDSBFISDHFUOHSDUOFHUO182734198276491KHASCFGBAJJHJDFGA -dC:\Users\Admin\AppData\Local\Temp4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1044 -
C:\Users\Admin\AppData\Local\Temp\Hack.exe"C:\Users\Admin\AppData\Local\Temp\Hack.exe"5⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:3796
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4768
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:936