Analysis
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max time kernel
140s -
max time network
136s -
platform
windows7_x64 -
resource
win7-20230621-en -
resource tags
arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system -
submitted
30-06-2023 14:39
Behavioral task
behavioral1
Sample
64dlldlldlldll.dll
Resource
win7-20230621-en
windows7-x64
7 signatures
150 seconds
General
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Target
64dlldlldlldll.dll
-
Size
3.5MB
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MD5
f40e1a15f93696510e5faef3a216f18f
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SHA1
6d353491cc7f32bcf9211c7dc1a5b7149e4ebf9a
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SHA256
f8d015ac4faff5d7a5da0e95f3cc9e9eb18417cd749b3b4625b5312910a25b7b
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SHA512
5b20529fc6ee3731382d48cf2db7dce8bae0ba753314e8bed07ba993c1ae891134385df7f4ffd7ee62e0b1b6618bfb209b27fac3fdbe88a60b1375747fefe2b2
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SSDEEP
49152:T+y6I9edJ9qu8moH+xNSJJ1LKz+JsK47C:L69RyLqe
Malware Config
Extracted
Family
systembc
C2
5.42.65.67:4298
localhost.exchange:4298
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 -
Blocklisted process makes network request 1 IoCs
Processes:
rundll32.exeflow pid process 1 108 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/108-55-0x000007FEF6270000-0x000007FEF65FD000-memory.dmp themida behavioral1/memory/108-58-0x000007FEF6270000-0x000007FEF65FD000-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 108 rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\64dlldlldlldll.dll,#11⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Blocklisted process makes network request
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:108
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/108-54-0x000007FEF6600000-0x000007FEF698D000-memory.dmpFilesize
3.6MB
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memory/108-55-0x000007FEF6270000-0x000007FEF65FD000-memory.dmpFilesize
3.6MB
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memory/108-57-0x000007FEF6600000-0x000007FEF698D000-memory.dmpFilesize
3.6MB
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memory/108-58-0x000007FEF6270000-0x000007FEF65FD000-memory.dmpFilesize
3.6MB