Analysis
- max time kernel
3s - max time network
136s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
26/12/2023, 19:52
General
- Target 8a098265737317cd7bf7bbef762b81c1.exe
- Size 2.2MB
- Sample231226-ylcrjsagh5
- SHA256 26ef72d7170fa0aa8ffab8695637d465040d1e51a8ba03a22855d7abfb902fbe
Malware Config
Extracted
-
44caliber
-
https://discord.com/api/webhooks/850985103400108043/qMVlcxRCEtOy4d0lLo-ckGGqIgWka8O5mwrGC7NwW7qRJs5beglorhRUk-uRy4jQ1Cbz
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.
- Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8a098265737317cd7bf7bbef762b81c1.exe"C:\Users\Admin\AppData\Local\Temp\8a098265737317cd7bf7bbef762b81c1.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
-
C:\Users\Admin\AppData\Local\Temp\Spy IDChanger (2).exe"C:\Users\Admin\AppData\Local\Temp\Spy IDChanger (2).exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Insidious.exe"C:\Users\Admin\AppData\Local\Temp\Insidious.exe"2⤵
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
memory/3644-0-0x0000000000400000-0x0000000000923000-memory.dmp
memory/3644-1-0x0000000077AF4000-0x0000000077AF6000-memory.dmp
memory/3644-5-0x0000000002C50000-0x0000000002C51000-memory.dmp
memory/3644-4-0x0000000002C40000-0x0000000002C41000-memory.dmp
memory/3644-3-0x0000000000400000-0x0000000000923000-memory.dmp
memory/3644-25-0x0000000000400000-0x0000000000923000-memory.dmp
memory/4172-29-0x000000001AFB0000-0x000000001AFC0000-memory.dmp
memory/4172-26-0x00007FFD80660000-0x00007FFD81121000-memory.dmp
memory/4172-21-0x0000000000210000-0x000000000025A000-memory.dmp
memory/4172-153-0x000000001B5C0000-0x000000001B6C2000-memory.dmp
memory/4172-154-0x00007FFD80660000-0x00007FFD81121000-memory.dmp