Analysis
- max time kernel
4s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
25/12/2023, 20:23
General
- Target 3b1e7e5df7f530ad30e29bb081f1c6e1.exe
- Size 20.1MB
- Sample231225-y572sshcbp
- SHA256 50feea35e7a324e67b951d06fc3f0f5b01199b47b3cfb5a693e33eec699f84f2
Malware Config
Extracted
-
44caliber
-
https://discord.com/api/webhooks/870328559921668146/kazDUWGIa2HOkULS2qQpDIz38by-5RiNdWFILJQZSPRi2F9j1-5L1rtRf7yO0-V87Q4N
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 3 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\3b1e7e5df7f530ad30e29bb081f1c6e1.exe"C:\Users\Admin\AppData\Local\Temp\3b1e7e5df7f530ad30e29bb081f1c6e1.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/3660-0-0x0000000000BF0000-0x0000000003EE2000-memory.dmp
memory/3660-1-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-3-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-6-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-7-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-9-0x00000000776F4000-0x00000000776F6000-memory.dmp
memory/3660-8-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-5-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-4-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-2-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-12-0x0000000000BF0000-0x0000000003EE2000-memory.dmp
memory/3660-13-0x0000000000BF0000-0x0000000003EE2000-memory.dmp
memory/3660-14-0x0000000009290000-0x0000000009322000-memory.dmp
memory/3660-47-0x0000000009BE0000-0x000000000A184000-memory.dmp
memory/3660-139-0x0000000009AC0000-0x0000000009B26000-memory.dmp
memory/3660-144-0x0000000075A90000-0x0000000075B80000-memory.dmp
memory/3660-143-0x0000000000BF0000-0x0000000003EE2000-memory.dmp