Malware

Final1stspy

Final1stspy is a Windows malware family with spyware-like backdoor characteristics. Documented behavior includes enumerating running processes for host discovery, deobfuscating embedded Base64-encoded strings during execution, establishing persistence through a Registry Run autostart entry, and communicating with command-and-control infrastructure over HTTP. These traits indicate an implant designed to survive reboots, profile the victim environment, and maintain remote operator connectivity while concealing parts of its configuration or logic through lightweight string obfuscation. High-confidence reporting supports Windows as the target platform due to its use of Registry-based persistence and process enumeration on Windows hosts.

For your environment

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MITRE ATT&CK

Techniques & procedures

6 distinct techniques documented for this family, organized by ATT&CK tactic.

Persistence

1 technique

T1547.001Registry Run Keys / Startup FolderEvidence7

The content repeatedly describes malware and threat actors establishing persistence by adding values under Registry Run keys such as HKCU\Software\Microsoft\Windows\CurrentVersion\Run and HKLM\Software\Microsoft\Windows\CurrentVersion\Run, and by placing shortcuts or files in Startup folders.

Privilege Escalation

1 technique

T1547.001Registry Run Keys / Startup FolderEvidence7

Stealth

2 techniques

T1027Obfuscated Files or InformationEvidence5

The content repeatedly describes malware and threat actors using obfuscated code, encrypted strings, Base64/XOR/RC4/AES encoding, VMProtect/ConfuserEx/SmartAssembly, stack strings, control-flow flattening, opaque predicates, and hidden payloads to evade analysis and detection.

T1140Deobfuscate/Decode Files or InformationEvidence8

The content is a long ATT&CK-style listing of malware and threat groups that 'decrypt', 'decode', 'deobfuscate', 'unpack', or 'decompress' payloads, strings, configuration data, shellcode, and files prior to execution or use.

Discovery

2 techniques

T1057Process DiscoveryEvidence5

Tasklist can be used to discover processes running on a system. Numerous malware families and threat groups are described as listing running processes, collecting PIDs, checking for specific process names, or enumerating loaded modules.

T1082System Information DiscoveryEvidence8

The content repeatedly describes malware and threat actors collecting OS version, computer name, architecture, CPU, memory, disk, BIOS, language, and other host details; examples include use of commands such as ver, systeminfo, hostname, uname -m, and WMI to gather host information.

Command and Control

1 technique

T1071.001Web ProtocolsEvidence5

The content is a long ATT&CK-style listing showing numerous malware families and threat groups that 'use HTTP,' 'use HTTPS,' 'HTTP POST requests,' 'HTTP GET requests,' or 'HTTP/S' for command and control communications.

ACTIVITY FEED

Recent activity

8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

8 SOURCESView more in app

mitre attack websiteNews

Oct 21, 2021

Deobfuscate/Decode Files or Information, Technique T1140 - Enterprise | MITRE ATT&CK®

Malware that uses Python code to deobfuscate Base64-encoded strings.

mitre attack websiteNews

Oct 21, 2021

Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder, Sub-technique T1547.001 - Enterprise | MITRE ATT&CK®

Malware that establishes persistence by creating a Registry Run key.

mitre attack websiteNews

Oct 21, 2021

Process Discovery, Technique T1057 - Enterprise | MITRE ATT&CK®

Spyware that obtains a list of running processes.

mitre attack websiteNews

Jan 1, 2021

Deobfuscate/Decode Files or Information, Technique T1140 - Enterprise | MITRE ATT&CK®

Malware that uses Python to deobfuscate Base64-encoded strings.

+4 more in the timeline

What this page doesn’t show

The version that knows your environment.

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IOC matching

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping6

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.

Final1stspy