Analysis
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max time kernel
38s -
max time network
43s -
platform
windows7_x64 -
resource
win7-20220715-en -
resource tags
arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system -
submitted
18-07-2022 15:24
Behavioral task
behavioral1
Sample
gcpfqzsczq.dll
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
gcpfqzsczq.dll
Resource
win10v2004-20220414-en
Behavioral task
behavioral3
Sample
ms9s539qhd0628mgfggg.exe
Resource
win7-20220414-en
Behavioral task
behavioral4
Sample
ms9s539qhd0628mgfggg.exe
Resource
win10v2004-20220718-en
General
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Target
gcpfqzsczq.dll
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Size
6.8MB
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MD5
cb0e540176159268be4986459091576a
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SHA1
c512c14e8a2afb15636e7b4c6f30284646b8d456
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SHA256
fbe44a3401b91f4fa23f2df40e6844931bfc1e8931fefcf301b786788b44a6f4
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SHA512
a04fc5b10b46bd2cec4ce3ec48b29ca87e3137a3f5e2d3575d18a6282c98a6c9e9e7c9316494fbeb1a4e30ce24842d41c074c3d4c3c122e0378f8259b25a4b1a
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion rundll32.exe -
Processes:
resource yara_rule behavioral1/memory/1048-57-0x0000000001EC0000-0x0000000002FB7000-memory.dmp themida behavioral1/memory/1048-58-0x0000000001EC0000-0x0000000002FB7000-memory.dmp themida behavioral1/memory/1048-59-0x0000000001EC0000-0x0000000002FB7000-memory.dmp themida behavioral1/memory/1048-60-0x0000000001EC0000-0x0000000002FB7000-memory.dmp themida behavioral1/memory/1048-61-0x0000000001EC0000-0x0000000002FB7000-memory.dmp themida behavioral1/memory/1048-62-0x0000000001EC0000-0x0000000002FB7000-memory.dmp themida behavioral1/memory/1048-63-0x0000000001EC0000-0x0000000002FB7000-memory.dmp themida behavioral1/memory/1048-64-0x0000000001EC0000-0x0000000002FB7000-memory.dmp themida -
Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
rundll32.exepid process 1048 rundll32.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 872 1048 WerFault.exe rundll32.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 944 wrote to memory of 1048 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1048 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1048 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1048 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1048 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1048 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1048 944 rundll32.exe rundll32.exe PID 1048 wrote to memory of 872 1048 rundll32.exe WerFault.exe PID 1048 wrote to memory of 872 1048 rundll32.exe WerFault.exe PID 1048 wrote to memory of 872 1048 rundll32.exe WerFault.exe PID 1048 wrote to memory of 872 1048 rundll32.exe WerFault.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\gcpfqzsczq.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:944 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\gcpfqzsczq.dll,#12⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:1048 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1048 -s 3163⤵
- Program crash
PID:872
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/872-65-0x0000000000000000-mapping.dmp
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memory/1048-60-0x0000000001EC0000-0x0000000002FB7000-memory.dmpFilesize
17.0MB
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memory/1048-56-0x00000000774F0000-0x0000000077670000-memory.dmpFilesize
1.5MB
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memory/1048-57-0x0000000001EC0000-0x0000000002FB7000-memory.dmpFilesize
17.0MB
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memory/1048-58-0x0000000001EC0000-0x0000000002FB7000-memory.dmpFilesize
17.0MB
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memory/1048-59-0x0000000001EC0000-0x0000000002FB7000-memory.dmpFilesize
17.0MB
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memory/1048-54-0x0000000000000000-mapping.dmp
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memory/1048-61-0x0000000001EC0000-0x0000000002FB7000-memory.dmpFilesize
17.0MB
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memory/1048-62-0x0000000001EC0000-0x0000000002FB7000-memory.dmpFilesize
17.0MB
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memory/1048-63-0x0000000001EC0000-0x0000000002FB7000-memory.dmpFilesize
17.0MB
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memory/1048-64-0x0000000001EC0000-0x0000000002FB7000-memory.dmpFilesize
17.0MB
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memory/1048-55-0x0000000075241000-0x0000000075243000-memory.dmpFilesize
8KB
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memory/1048-66-0x00000000774F0000-0x0000000077670000-memory.dmpFilesize
1.5MB