Analysis
- max time kernel
165s - max time network
176s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
03/01/2024, 15:19
General
- Target 2ba940cf9a7a31aa0cfc73f74e3482e4.exe
- Size 3.1MB
- Sample240103-sqf2waffcj
- SHA256 9d4c0e742192d990d817e17aa3375658cb704ae49b81a0da85fe4b40fcd14465
Malware Config
Extracted
-
44caliber
-
https://discord.com/api/webhooks/867100509307142154/BMIycBNKWEMuXl991uUrUx-2sScTu3a04QCmMfOP8t-z9WEPTh8ZVkINTJPpUma2BdTD
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
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2ba940cf9a7a31aa0cfc73f74e3482e4.exe"C:\Users\Admin\AppData\Local\Temp\2ba940cf9a7a31aa0cfc73f74e3482e4.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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/4724-0-0x00000000003A0000-0x0000000000C04000-memory.dmp
memory/4724-1-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-2-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-3-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-4-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-5-0x00000000003A0000-0x0000000000C04000-memory.dmp
memory/4724-6-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-7-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-8-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-10-0x0000000077114000-0x0000000077116000-memory.dmp
memory/4724-14-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-15-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-16-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-17-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-18-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-19-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-21-0x0000000076440000-0x0000000076530000-memory.dmp
memory/4724-24-0x00000000003A0000-0x0000000000C04000-memory.dmp
memory/4724-25-0x00000000003A0000-0x0000000000C04000-memory.dmp
memory/4724-31-0x0000000006500000-0x0000000006592000-memory.dmp