Arkei

Arkei is an infostealer written in C++.

SmokeLoader

Modular backdoor trojan in use since 2014.

Suspicious use of NtCreateProcessExOtherParentProcess

Tofsee

Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

Vidar

Vidar is an infostealer based on Arkei stealer.

Windows security bypass

suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)

suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)

suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

xmrig

XMRig is a high performance, open source, cross platform CPU/GPU miner.

Arkei Stealer Payload

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Vidar Stealer

XMRig Miner Payload

Creates new service(s)

Downloads MZ/PE file

Drops file in Drivers directory

Executes dropped EXE

Modifies Windows Firewall

Sets file to hidden

Modifies file attributes to stop it showing in Explorer etc.

Sets service image path in registry

UPX packed file

Detects executables packed with UPX/modified UPX open source packer.