Analysis
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max time kernel
55s -
max time network
62s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
01-07-2022 08:25
Static task
static1
Behavioral task
behavioral1
Sample
d939n2z05etw2y8zec.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
d939n2z05etw2y8zec.exe
Resource
win10v2004-20220414-en
Behavioral task
behavioral3
Sample
fbo3xfp9z41vwe0tzc0jd.dll
Resource
win7-20220414-en
General
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Target
fbo3xfp9z41vwe0tzc0jd.dll
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Size
8.5MB
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MD5
ceb7d86b25278e2d828955a398de923c
-
SHA1
21bf41eb81548d5e97ca6e8780f669eb00860d28
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SHA256
f1f0291aed00e8a997b0e8812f4757abdbd9ba85fd5e98f212b183c9f9c0e849
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SHA512
7147a8d8d91319b0f1f82043441efe0b2ec4f55fa6ed3cce22851a43f0a3b0a434e41bf5c53b2cd8bbb089bff88c7269d9d1faa2a023308296a5076dd6441274
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 behavioral4/memory/3068-132-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-133-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-134-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-135-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-136-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-137-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-138-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-139-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-140-0x0000000002E10000-0x000000000443C000-memory.dmp themida behavioral4/memory/3068-141-0x0000000002E10000-0x000000000443C000-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 3068 rundll32.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4144 3068 WerFault.exe rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
rundll32.exedescription pid process target process PID 1668 wrote to memory of 3068 1668 rundll32.exe rundll32.exe PID 1668 wrote to memory of 3068 1668 rundll32.exe rundll32.exe PID 1668 wrote to memory of 3068 1668 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\fbo3xfp9z41vwe0tzc0jd.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\fbo3xfp9z41vwe0tzc0jd.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
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3068 -s 7563⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3068 -ip 30681⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/3068-130-0x0000000000000000-mapping.dmp
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memory/3068-131-0x0000000077550000-0x00000000776F3000-memory.dmpFilesize
1.6MB
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memory/3068-132-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-133-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-134-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-135-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-136-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-137-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-138-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-139-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-140-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB
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memory/3068-141-0x0000000002E10000-0x000000000443C000-memory.dmpFilesize
22.2MB