Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
14/06/2023, 08:43
General
- Target f40e1a15f93696510e5faef3a216f18f.dll
- Size 3.5MB
- Sample230614-kmka5afa65
- SHA256 f8d015ac4faff5d7a5da0e95f3cc9e9eb18417cd749b3b4625b5312910a25b7b
Score
10/10
Malware Config
Extracted
Family
-
systembc
C2
-
5.42.65.67:4298
-
localhost.exchange:4298
Signatures
- SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Blocklisted process makes network request 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Themida packer 3 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\f40e1a15f93696510e5faef3a216f18f.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
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1640-133-0x00007FFA7AD40000-0x00007FFA7B0CD000-memory.dmp
memory/1640-134-0x00007FFA7AD40000-0x00007FFA7B0CD000-memory.dmp
memory/1640-135-0x00007FFA7AD40000-0x00007FFA7B0CD000-memory.dmp