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Analysis
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max time kernel
94s -
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, 06:54
Behavioral task
behavioral1
Sample
8f503a109e77031961be0c791f41c6e0N.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
8f503a109e77031961be0c791f41c6e0N.exe
Resource
win10v2004-20240802-en
General
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Target
8f503a109e77031961be0c791f41c6e0N.exe
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Size
2.6MB
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MD5
8f503a109e77031961be0c791f41c6e0
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SHA1
322e56e5abd3b3f27cbe5d0ae322c9d408a18e78
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SHA256
c010f5ae0c0614c2077f6f346cc82d850b837aa743ecb62eac197ee7e8964f7b
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SHA512
86d64819b112a56a1997f48d043e7fc802fd975d935e19538d6799b2c11321486f5370a10351d305e1040f234435657720ecfd61a408121d884b627f38b87075
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SSDEEP
49152:WXzhpDtKSK1cb8PGK+Tfuqmpc3elWo8GnQAsYZEVu:WXzhW148Pd+Tf1mpcOldJQ3/Vu
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" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.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__ 8f503a109e77031961be0c791f41c6e0N.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 Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ spoolsv.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\VideoBiosVersion 8f503a109e77031961be0c791f41c6e0N.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\SystemBiosVersion svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion spoolsv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 8f503a109e77031961be0c791f41c6e0N.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 spoolsv.exe -
Executes dropped EXE 4 IoCs
pid Process 556 explorer.exe 2456 spoolsv.exe 2840 svchost.exe 2416 spoolsv.exe -
Loads dropped DLL 4 IoCs
pid Process 2540 8f503a109e77031961be0c791f41c6e0N.exe 556 explorer.exe 2456 spoolsv.exe 2840 svchost.exe -
resource yara_rule behavioral1/memory/2540-0-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2540-1-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/files/0x0019000000018b03-7.dat themida behavioral1/memory/556-12-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/556-13-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/files/0x0007000000018b89-23.dat themida behavioral1/memory/2456-25-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2456-26-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/files/0x000a000000018bbf-33.dat themida behavioral1/memory/2540-38-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2840-41-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2416-48-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/556-49-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2416-54-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2456-55-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2540-56-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/556-57-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/556-58-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2840-59-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/556-70-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/556-72-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/556-80-0x0000000000400000-0x0000000000A16000-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\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" explorer.exe 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 -
description ioc Process 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 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 8f503a109e77031961be0c791f41c6e0N.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\explorer.exe explorer.exe File opened for modification C:\Windows\SysWOW64\explorer.exe svchost.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
pid Process 2540 8f503a109e77031961be0c791f41c6e0N.exe 556 explorer.exe 2456 spoolsv.exe 2840 svchost.exe 2416 spoolsv.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File opened for modification \??\c:\windows\resources\themes\explorer.exe 8f503a109e77031961be0c791f41c6e0N.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 8f503a109e77031961be0c791f41c6e0N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language explorer.exe 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 -
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 2612 schtasks.exe 2712 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 556 explorer.exe 556 explorer.exe 2840 svchost.exe 2840 svchost.exe 556 explorer.exe 556 explorer.exe 556 explorer.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 556 explorer.exe 2840 svchost.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 2540 8f503a109e77031961be0c791f41c6e0N.exe 2540 8f503a109e77031961be0c791f41c6e0N.exe 556 explorer.exe 556 explorer.exe 2456 spoolsv.exe 2456 spoolsv.exe 2840 svchost.exe 2840 svchost.exe 2416 spoolsv.exe 2416 spoolsv.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 2540 wrote to memory of 556 2540 8f503a109e77031961be0c791f41c6e0N.exe 29 PID 2540 wrote to memory of 556 2540 8f503a109e77031961be0c791f41c6e0N.exe 29 PID 2540 wrote to memory of 556 2540 8f503a109e77031961be0c791f41c6e0N.exe 29 PID 2540 wrote to memory of 556 2540 8f503a109e77031961be0c791f41c6e0N.exe 29 PID 556 wrote to memory of 2456 556 explorer.exe 30 PID 556 wrote to memory of 2456 556 explorer.exe 30 PID 556 wrote to memory of 2456 556 explorer.exe 30 PID 556 wrote to memory of 2456 556 explorer.exe 30 PID 2456 wrote to memory of 2840 2456 spoolsv.exe 31 PID 2456 wrote to memory of 2840 2456 spoolsv.exe 31 PID 2456 wrote to memory of 2840 2456 spoolsv.exe 31 PID 2456 wrote to memory of 2840 2456 spoolsv.exe 31 PID 2840 wrote to memory of 2416 2840 svchost.exe 32 PID 2840 wrote to memory of 2416 2840 svchost.exe 32 PID 2840 wrote to memory of 2416 2840 svchost.exe 32 PID 2840 wrote to memory of 2416 2840 svchost.exe 32 PID 556 wrote to memory of 2008 556 explorer.exe 33 PID 556 wrote to memory of 2008 556 explorer.exe 33 PID 556 wrote to memory of 2008 556 explorer.exe 33 PID 556 wrote to memory of 2008 556 explorer.exe 33 PID 2840 wrote to memory of 2612 2840 svchost.exe 34 PID 2840 wrote to memory of 2612 2840 svchost.exe 34 PID 2840 wrote to memory of 2612 2840 svchost.exe 34 PID 2840 wrote to memory of 2612 2840 svchost.exe 34 PID 2840 wrote to memory of 2712 2840 svchost.exe 37 PID 2840 wrote to memory of 2712 2840 svchost.exe 37 PID 2840 wrote to memory of 2712 2840 svchost.exe 37 PID 2840 wrote to memory of 2712 2840 svchost.exe 37
Processes
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C:\Users\Admin\AppData\Local\Temp\8f503a109e77031961be0c791f41c6e0N.exe"C:\Users\Admin\AppData\Local\Temp\8f503a109e77031961be0c791f41c6e0N.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:2540 -
\??\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:556 -
\??\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:2456 -
\??\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:2840 -
\??\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:2416
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:56 /f5⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2612
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:57 /f5⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2712
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C:\Windows\Explorer.exeC:\Windows\Explorer.exe3⤵PID:2008
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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
MD5279bb22471d17f3d0b90aac8375fee7d
SHA12e59092f6c938361d7be996f77d2042dbea5ca0d
SHA2567954a05ea5dc04620ddef8931b5b261b6b5b3206eb93d36110b99bfbc704be63
SHA512925793f6ac2ad4ea18e1ee27f7d55aabe3c9db168298b99c54222a3a355c75c437e972a3e16f64d791b124ceeef62060e1f363220494c31a37f0caf827ab1328
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Filesize
2.6MB
MD5a9e636db3a44009c53cab10e17b72491
SHA1c93fbb82e7db76c6191e6d65a1b1cdde8a68a3c3
SHA2568b09af0fd03806ff9e817b68ededc4972cbaa0fbd5283e3b928b7777adeaade1
SHA51211dbd1e142797ae8c5ec005da952ca1d5f7f000cf2b71d9a8a956afaccfa751773d699e540afbf7e163df6a4b14d585937b0761a306175998d40fd5012aa5026
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Filesize
2.6MB
MD5f59d236e6f750cf577d7c7db070ba373
SHA104b04d693a1aed018b4722028f74865ebd7f2029
SHA256026540557d12e9d266f9260b266067278b4d247f7733b8270856e3f90cbf52ca
SHA5128bd46a53a3ea077371ba6cb092ae3661d3f4151a37bc93cd031b1f5d8c671ac6e758b83e94af53c5593698ff624c1525bb0b7ca7c8b0416ca8837e85749e5328