Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
16-12-2024 06:56
Behavioral task
behavioral1
Sample
System32.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
System32.exe
Resource
win10v2004-20241007-en
General
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Target
System32.exe
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Size
5.3MB
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MD5
d4817ea043beaf35d19fa6a5adaa179c
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SHA1
bf5c75100142731e737c04b55769c4479bef0c01
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SHA256
da5844b02ebfa56b4c036ea50136e7766922fa1591d344130f5492e5624fdf5d
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SHA512
98d2f67523de2260cad45ce2b3f0e6edd5322ad4d2d78854983c3410398079f1a0dd3f8b3dc69d3e0f052c566de3eb89d1de9a086378f542b1a2096ce0730277
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SSDEEP
98304:euP+GgrLRHeOxxsJFoQYVCkOTfOKfKQMZ8htPwCakmxrcTZcV+TQB:l+GgLRJghYckmmKfFMZqtMkicZcV2e
Malware Config
Extracted
redline
duc
159.223.34.114:1912
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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.exe -
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine payload 2 IoCs
resource yara_rule behavioral2/files/0x000a000000023b8c-8.dat family_redline behavioral2/memory/1508-11-0x0000000000800000-0x0000000000852000-memory.dmp family_redline -
Redline family
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 6 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ System32.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ icsys.icn.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 12 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion System32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion System32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion icsys.icn.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion icsys.icn.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorer.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\VideoBiosVersion explorer.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 svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion svchost.exe -
Executes dropped EXE 6 IoCs
pid Process 1508 system32.exe 3588 icsys.icn.exe 4804 explorer.exe 4464 spoolsv.exe 4260 svchost.exe 3968 spoolsv.exe -
resource yara_rule behavioral2/memory/3628-0-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/memory/3628-21-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/files/0x000b000000023b88-25.dat themida behavioral2/memory/3588-28-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/files/0x000b000000023b92-34.dat themida behavioral2/files/0x000b000000023b94-43.dat themida behavioral2/memory/4464-45-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/files/0x000b000000023b96-52.dat themida behavioral2/memory/3968-61-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/memory/4464-62-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/memory/3628-64-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/memory/3588-65-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/memory/4804-66-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/memory/4260-68-0x0000000000400000-0x0000000000FE2000-memory.dmp themida behavioral2/memory/4804-80-0x0000000000400000-0x0000000000FE2000-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 spoolsv.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA System32.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA icsys.icn.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 Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA svchost.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 6 IoCs
pid Process 3628 System32.exe 3588 icsys.icn.exe 4804 explorer.exe 4464 spoolsv.exe 4260 svchost.exe 3968 spoolsv.exe -
Drops file in Windows directory 5 IoCs
description ioc Process File opened for modification \??\c:\windows\resources\svchost.exe spoolsv.exe File opened for modification C:\Windows\Resources\tjud.exe explorer.exe File opened for modification C:\Windows\Resources\Themes\icsys.icn.exe System32.exe File opened for modification \??\c:\windows\resources\themes\explorer.exe icsys.icn.exe File opened for modification \??\c:\windows\resources\spoolsv.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 System32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language system32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icsys.icn.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3628 System32.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 3588 icsys.icn.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 4804 explorer.exe 4260 svchost.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 3628 System32.exe 3628 System32.exe 3588 icsys.icn.exe 3588 icsys.icn.exe 4804 explorer.exe 4804 explorer.exe 4464 spoolsv.exe 4464 spoolsv.exe 4260 svchost.exe 4260 svchost.exe 3968 spoolsv.exe 3968 spoolsv.exe -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 3628 wrote to memory of 1508 3628 System32.exe 82 PID 3628 wrote to memory of 1508 3628 System32.exe 82 PID 3628 wrote to memory of 1508 3628 System32.exe 82 PID 3628 wrote to memory of 3588 3628 System32.exe 88 PID 3628 wrote to memory of 3588 3628 System32.exe 88 PID 3628 wrote to memory of 3588 3628 System32.exe 88 PID 3588 wrote to memory of 4804 3588 icsys.icn.exe 89 PID 3588 wrote to memory of 4804 3588 icsys.icn.exe 89 PID 3588 wrote to memory of 4804 3588 icsys.icn.exe 89 PID 4804 wrote to memory of 4464 4804 explorer.exe 90 PID 4804 wrote to memory of 4464 4804 explorer.exe 90 PID 4804 wrote to memory of 4464 4804 explorer.exe 90 PID 4464 wrote to memory of 4260 4464 spoolsv.exe 91 PID 4464 wrote to memory of 4260 4464 spoolsv.exe 91 PID 4464 wrote to memory of 4260 4464 spoolsv.exe 91 PID 4260 wrote to memory of 3968 4260 svchost.exe 92 PID 4260 wrote to memory of 3968 4260 svchost.exe 92 PID 4260 wrote to memory of 3968 4260 svchost.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\System32.exe"C:\Users\Admin\AppData\Local\Temp\System32.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- 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:3628 -
\??\c:\users\admin\appdata\local\temp\system32.exec:\users\admin\appdata\local\temp\system32.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1508
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C:\Windows\Resources\Themes\icsys.icn.exeC:\Windows\Resources\Themes\icsys.icn.exe2⤵
- 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
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3588 -
\??\c:\windows\resources\themes\explorer.exec:\windows\resources\themes\explorer.exe3⤵
- 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
- 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: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4804 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe SE4⤵
- 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
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4464 -
\??\c:\windows\resources\svchost.exec:\windows\resources\svchost.exe5⤵
- 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
- 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: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4260 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe PR6⤵
- 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:3968
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
2Virtualization/Sandbox Evasion
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
300KB
MD5c368cb0e4cc65cbdc012e449de37d973
SHA1ae04d634ff3078e1912dc71d44c893c1dd47c399
SHA25657a8157689acab60874b086408091b4369f3f5f9d62bcc306c9e77ff9f3c5b7e
SHA512e823a91ee1f8901ebc844d16ed1c585bd78fcf6fa143433649c1295f3724ddd29679949ec7b97485505b259e4ce7d012948f971451f0bde6b525cc915e3ed18a
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Filesize
5.6MB
MD57cb5aac1306f6db8e0d69c30d2113318
SHA1cd55ca85d46e24e0c59320f09b7c282e6d12a137
SHA2569ca180e32df731a19cf0e9dbf938342df3d6b32747b30985da5550194165695d
SHA512aa8b985406562e52d28ffc801669be5b2b8896470c33a093dacfe17fe598846e4c21823c4e65383b41c44e46a57a7fbd8d5d416f82d7e292616f174df88a663a
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Filesize
5.0MB
MD56a696257bd624ea0cdde713ff447b134
SHA1fa17806195d1fb5a2077a7d43827f58832d57c35
SHA256c2234864d3687f6eb397fc0fe4c81d2c54dbcf74161ab38b48a1150df753c573
SHA512b49ac9b20ab4f1c8b7793f1c007ee7985f9c11c0c5c67cf99436f22275efca504a20480a0d6cf52c793060eb78f090a66d33a5f37bffe678591b16a55d7d94ae
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Filesize
5.6MB
MD5ea4146451052cd24e5afa11f6bbbb014
SHA1671dd3202bea3a99c9dee67ae8dbc07e93da346f
SHA256183a57b7ce1a6480a92eca49399bb7d0a2d0df323d08ac2e0dcb24ed09222e77
SHA512c2fd2ce41a9f80330ea819e14c6785605a34740e975b483835aad841ef29d306a8fd3f2b5b6f0f517d197dc21d98a7d19733719c6e1f08b8aeeeff897d65368a
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Filesize
5.6MB
MD51dbe3c130fddc2210326bb84c2c5238e
SHA178eb5fff424d927f6d924a8dc174d27feaa58a60
SHA2569c1c20f062025e827c3e747824ba4e849fa9416a44849890fda7cc3c62ba447f
SHA51231f535aad186a462e86eb613a45c91339bf75185e3b0301263b94a33e710ff6552a98d9283332e8e6bf24a3337b06e278cea9d24df45eca2898a9fcdda4b2d92