Analysis
- max time kernel
92s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
24/12/2023, 22:30
General
- Target 15dbc954cd4f54abc55486ef11375fa6.exe
- Size 25.5MB
- Sample231224-2e37psfaa5
- SHA256 1e71f322863511ac34ab0013f3740b1921a9756f4b326d2184a8f6159e61ccff
Malware Config
Extracted
-
44caliber
-
https://discord.com/api/webhooks/870377028749242408/bsw2VmRGeiAIilnd9vwqpCOLMZO_5v4RLwcEnrTBTCpbNpQmrUG6iRNERPAwaRZbpXqc
Signatures
- 44Caliber
An open source infostealer written in C#.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 2 IoCs
Detects Themida, an advanced Windows software protection system.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\15dbc954cd4f54abc55486ef11375fa6.exe"C:\Users\Admin\AppData\Local\Temp\15dbc954cd4f54abc55486ef11375fa6.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Process.txt
Process.txt
Process.txt
memory/3480-3-0x00007FFB00030000-0x00007FFB00031000-memory.dmp
memory/3480-4-0x00007FFB039B0000-0x00007FFB03BA5000-memory.dmp
memory/3480-7-0x00007FFAE4FD0000-0x00007FFAE5A91000-memory.dmp
memory/3480-8-0x00007FF6EE7E0000-0x00007FF6F2AE0000-memory.dmp
memory/3480-9-0x00007FF6EE7E0000-0x00007FF6F2AE0000-memory.dmp
memory/3480-10-0x000000001D010000-0x000000001D020000-memory.dmp
memory/3480-0-0x00007FFB01530000-0x00007FFB017F9000-memory.dmp
memory/3480-2-0x00007FFB00000000-0x00007FFB00002000-memory.dmp
memory/3480-1-0x00007FFB01530000-0x00007FFB017F9000-memory.dmp
memory/3480-133-0x00007FFB01530000-0x00007FFB017F9000-memory.dmp
memory/3480-134-0x00007FFB039B0000-0x00007FFB03BA5000-memory.dmp
memory/3480-135-0x00007FFAE4FD0000-0x00007FFAE5A91000-memory.dmp