Analysis
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max time kernel
120s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
25/08/2024, 10:39
Behavioral task
behavioral1
Sample
4c94bd82103e915b07c9c68f52fd55e0N.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
4c94bd82103e915b07c9c68f52fd55e0N.exe
Resource
win10v2004-20240802-en
General
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Target
4c94bd82103e915b07c9c68f52fd55e0N.exe
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Size
2.6MB
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MD5
4c94bd82103e915b07c9c68f52fd55e0
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SHA1
9f16769de516835de4b54ba6481cb0a576ff2fad
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SHA256
cb380a4e22199067b5f96a64bffba9c647622b8168b130dba05ac8eade53b326
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SHA512
58c5ca4cf908ce426bc0ec1676057a3f03a9c7286beff2729670128df05dcb038c2d45d659c51efd8b5aecaec1067762db6093fd9dce2a85dd3a4e618d8eca82
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SSDEEP
49152:lS5IvAG44oOCdcSzNIJG70V6Do4yV/5mc5aNZJ350zg5bEJ60IZGnpw/YP:lS5G4DOT5JGIVzh/5aZX0zgd0IZGpwC
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe -
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ spoolsv.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 4c94bd82103e915b07c9c68f52fd55e0N.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorer.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ spoolsv.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ svchost.exe -
Checks BIOS information in registry 2 TTPs 10 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion spoolsv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion spoolsv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 4c94bd82103e915b07c9c68f52fd55e0N.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 4c94bd82103e915b07c9c68f52fd55e0N.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion spoolsv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion spoolsv.exe -
Executes dropped EXE 4 IoCs
pid Process 2740 explorer.exe 2052 spoolsv.exe 2628 svchost.exe 2648 spoolsv.exe -
Loads dropped DLL 4 IoCs
pid Process 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2740 explorer.exe 2052 spoolsv.exe 2628 svchost.exe -
resource yara_rule behavioral1/memory/2712-0-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/files/0x0033000000016d89-7.dat themida behavioral1/memory/2740-11-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/files/0x0004000000017801-17.dat themida behavioral1/memory/2052-23-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/files/0x00080000000186b7-30.dat themida behavioral1/memory/2712-33-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2628-35-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2740-43-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2648-44-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2648-49-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2052-51-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2712-53-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2740-55-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2628-56-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2740-65-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2628-68-0x0000000000400000-0x0000000000A13000-memory.dmp themida behavioral1/memory/2740-69-0x0000000000400000-0x0000000000A13000-memory.dmp themida -
Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" explorer.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA svchost.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA spoolsv.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 4c94bd82103e915b07c9c68f52fd55e0N.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorer.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA spoolsv.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\explorer.exe svchost.exe File opened for modification C:\Windows\SysWOW64\explorer.exe explorer.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
pid Process 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2740 explorer.exe 2052 spoolsv.exe 2628 svchost.exe 2648 spoolsv.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File opened for modification \??\c:\windows\resources\themes\explorer.exe 4c94bd82103e915b07c9c68f52fd55e0N.exe File opened for modification \??\c:\windows\resources\spoolsv.exe explorer.exe File opened for modification \??\c:\windows\resources\svchost.exe spoolsv.exe File opened for modification C:\Windows\Resources\tjud.exe explorer.exe -
System Location Discovery: System Language Discovery 1 TTPs 7 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 spoolsv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language spoolsv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4c94bd82103e915b07c9c68f52fd55e0N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language explorer.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2684 schtasks.exe 764 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2628 svchost.exe 2740 explorer.exe 2628 svchost.exe 2628 svchost.exe 2740 explorer.exe 2740 explorer.exe 2740 explorer.exe 2628 svchost.exe 2740 explorer.exe 2628 svchost.exe 2740 explorer.exe 2628 svchost.exe 2740 explorer.exe 2628 svchost.exe 2628 svchost.exe 2740 explorer.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 2628 svchost.exe 2740 explorer.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 2740 explorer.exe 2740 explorer.exe 2052 spoolsv.exe 2052 spoolsv.exe 2628 svchost.exe 2628 svchost.exe 2648 spoolsv.exe 2648 spoolsv.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 2712 wrote to memory of 2740 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 30 PID 2712 wrote to memory of 2740 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 30 PID 2712 wrote to memory of 2740 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 30 PID 2712 wrote to memory of 2740 2712 4c94bd82103e915b07c9c68f52fd55e0N.exe 30 PID 2740 wrote to memory of 2052 2740 explorer.exe 31 PID 2740 wrote to memory of 2052 2740 explorer.exe 31 PID 2740 wrote to memory of 2052 2740 explorer.exe 31 PID 2740 wrote to memory of 2052 2740 explorer.exe 31 PID 2052 wrote to memory of 2628 2052 spoolsv.exe 32 PID 2052 wrote to memory of 2628 2052 spoolsv.exe 32 PID 2052 wrote to memory of 2628 2052 spoolsv.exe 32 PID 2052 wrote to memory of 2628 2052 spoolsv.exe 32 PID 2628 wrote to memory of 2648 2628 svchost.exe 33 PID 2628 wrote to memory of 2648 2628 svchost.exe 33 PID 2628 wrote to memory of 2648 2628 svchost.exe 33 PID 2628 wrote to memory of 2648 2628 svchost.exe 33 PID 2740 wrote to memory of 1060 2740 explorer.exe 34 PID 2740 wrote to memory of 1060 2740 explorer.exe 34 PID 2740 wrote to memory of 1060 2740 explorer.exe 34 PID 2740 wrote to memory of 1060 2740 explorer.exe 34 PID 2628 wrote to memory of 2684 2628 svchost.exe 35 PID 2628 wrote to memory of 2684 2628 svchost.exe 35 PID 2628 wrote to memory of 2684 2628 svchost.exe 35 PID 2628 wrote to memory of 2684 2628 svchost.exe 35 PID 2628 wrote to memory of 764 2628 svchost.exe 38 PID 2628 wrote to memory of 764 2628 svchost.exe 38 PID 2628 wrote to memory of 764 2628 svchost.exe 38 PID 2628 wrote to memory of 764 2628 svchost.exe 38
Processes
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C:\Users\Admin\AppData\Local\Temp\4c94bd82103e915b07c9c68f52fd55e0N.exe"C:\Users\Admin\AppData\Local\Temp\4c94bd82103e915b07c9c68f52fd55e0N.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2712 -
\??\c:\windows\resources\themes\explorer.exec:\windows\resources\themes\explorer.exe2⤵
- Modifies visiblity of hidden/system files in Explorer
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2740 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe SE3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2052 -
\??\c:\windows\resources\svchost.exec:\windows\resources\svchost.exe4⤵
- Modifies visiblity of hidden/system files in Explorer
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2628 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe PR5⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2648
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 10:41 /f5⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2684
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 10:42 /f5⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:764
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C:\Windows\Explorer.exeC:\Windows\Explorer.exe3⤵PID:1060
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
2Virtualization/Sandbox Evasion
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.6MB
MD5f79e74c96c523b4de3dfd8955918dbc9
SHA1d2319e15711ed22eb325fe491948a56c4d486a76
SHA256910a6802ca3b255973e4b080d95a17e780081751e1572afee7d5ad7d3bb70053
SHA5122f358dc848176bcd5058e450693e155d87319c31308f4dde26473af02e23ab02312316bd3fbdc9b2b7593494ab4a83af3942e530466a35d9857ff4c114bf7d72
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Filesize
2.6MB
MD586239c36aaa65bb6da918f341e338df6
SHA15f70a670218b79ae418bd14118821d061394bb00
SHA256522247149894a808e87a5e33eb060442488e2690f4e4c4d42abf41cd664a0163
SHA512f34a01ce115159f57adbbbecd56b57ecd145f9591a6c696225687d91a068c1c6a4fae78288a6550267aa4bb106b68f666b2eac5e7e3386839b4c58ad46cf9e08
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Filesize
2.6MB
MD56ac260b57da0130cf0ca91fab5f8e477
SHA1a0ad7eb65ba8ed68b946646f3b4a3409dbd25151
SHA256e01e4127268c44a54be886fa106c60edee56b2656f5f134611f28e4952df8c3c
SHA5125ec3d776b3e19c5d339b1bc59d1a237a7a59c12255d75472e5febd8874a99fdfd3c74af8ba6c0ae2022966b00d726715cf2fa1ee55f0fd73450e4de2a71c4a32