Resubmissions
04/04/2024, 09:25
240404-ldwhgabh6804/04/2024, 09:17
240404-k83plabg631004/04/2024, 09:09
240404-k4weqaba8z10Analysis
- max time kernel
147s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
04/04/2024, 09:17
General
- Target SeroXenPTO/Gma.System.MouseKeyHook.dll
- Size 57KB
- Sample240404-k83plabg63
- SHA256 a62784297ff461a71e549dd75d0437d37b1cf8d2b88305c6c028ced7555213f7
Malware Config
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Loads dropped DLL 2 IoCs
- Themida packer 18 IoCs
Detects Themida, an advanced Windows software protection system.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SetWindowsHookEx 5 IoCs
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\SeroXenPTO\Gma.System.MouseKeyHook.dll,#11⤵
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
-
C:\Users\Admin\AppData\Local\Temp\SeroXenPTO\SeroXen.exe"C:\Users\Admin\AppData\Local\Temp\SeroXenPTO\SeroXen.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Local\Temp\SeroXenPTO\SeroXen.exe"C:\Users\Admin\AppData\Local\Temp\SeroXenPTO\SeroXen.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
77EC63BDA74BD0D0E0426DC8F8008506
77EC63BDA74BD0D0E0426DC8F8008506
C5VM64.dll
memory/400-31-0x00007FFFBC0F0000-0x00007FFFBC5E2000-memory.dmp
memory/400-4-0x000001D427000000-0x000001D4270CA000-memory.dmp
memory/400-3-0x000001D40E6C0000-0x000001D40E6D6000-memory.dmp
memory/400-11-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/400-13-0x00007FFFE6090000-0x00007FFFE6285000-memory.dmp
memory/400-12-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/400-14-0x00007FFFC4680000-0x00007FFFC47CE000-memory.dmp
memory/400-15-0x000001D4275A0000-0x000001D4276B4000-memory.dmp
memory/400-16-0x000001D40E740000-0x000001D40E76C000-memory.dmp
memory/400-17-0x000001D40E710000-0x000001D40E732000-memory.dmp
memory/400-18-0x00007FFFBC0F0000-0x00007FFFBC5E2000-memory.dmp
memory/400-21-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/400-22-0x00007FFFC5EB0000-0x00007FFFC6971000-memory.dmp
memory/400-23-0x000001D426F20000-0x000001D426F30000-memory.dmp
memory/400-58-0x00007FFFE6090000-0x00007FFFE6285000-memory.dmp
memory/400-57-0x00007FFFBC0F0000-0x00007FFFBC5E2000-memory.dmp
memory/400-56-0x00007FFFC5EB0000-0x00007FFFC6971000-memory.dmp
memory/400-28-0x00007FFFE6090000-0x00007FFFE6285000-memory.dmp
memory/400-55-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/400-0-0x00007FFFC5EB0000-0x00007FFFC6971000-memory.dmp
memory/400-37-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/400-53-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/400-1-0x000001D40A3A0000-0x000001D40CA34000-memory.dmp
memory/400-2-0x000001D426F20000-0x000001D426F30000-memory.dmp
memory/400-39-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/400-45-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-30-0x00007FFFE6090000-0x00007FFFE6285000-memory.dmp
memory/4848-29-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-32-0x00007FFFC4680000-0x00007FFFC47CE000-memory.dmp
memory/4848-46-0x00007FFFE6090000-0x00007FFFE6285000-memory.dmp
memory/4848-47-0x00007FFFBC0F0000-0x00007FFFBC5E2000-memory.dmp
memory/4848-38-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-34-0x00007FFFBC0F0000-0x00007FFFBC5E2000-memory.dmp
memory/4848-41-0x0000021188940000-0x0000021188950000-memory.dmp
memory/4848-42-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-52-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-40-0x00007FFFC5EB0000-0x00007FFFC6971000-memory.dmp
memory/4848-25-0x0000021188940000-0x0000021188950000-memory.dmp
memory/4848-24-0x00007FFFC5EB0000-0x00007FFFC6971000-memory.dmp
memory/4848-59-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-60-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-62-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-63-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp
memory/4848-64-0x00007FFFB9BA0000-0x00007FFFBA3FF000-memory.dmp