Backdoor.Mistic
Hunt this family in your stack
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
Groups observed using it
2 distinct threat actors attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
Backdoor.Mistic is a new, stealthy backdoor that has been used in cybercrime intrusions since April 2026. Mistic was in one case deployed in close proximity to ModeloRAT... The backdoor runs payloads in memory with no file written to disk and includes a kill switch that lets it delete itself.
Backdoor.Mistic is a new, stealthy backdoor that has been used in cybercrime intrusions since April 2026. Mistic was in one case deployed in close proximity to ModeloRAT... The backdoor runs payloads in memory with no file written to disk and includes a kill switch that lets it delete itself.
Techniques & procedures
8 distinct techniques documented for this family, organized by ATT&CK tactic.
Execution
4 techniques
Execution
Mistic provides attackers with typical capabilities, including ... code execution.
In each case the victim is ultimately tricked into running an attacker-supplied PowerShell command... Once a command is executed, a multi-stage PowerShell chain downloads and unpacks a portable WinPython environment and launches the ModeloRAT Python scripts.
ClickFix... trick users into pasting malicious scripts into the Windows Run dialog... FileFix... trick users into manually pasting and executing malicious commands directly inside the Windows File Explorer address bar... CrashFix... trick them into manually executing code... In each case the victim is ultimately tricked into running an attacker-supplied PowerShell command.
A loader (version.dll) hooks GetModuleFileNameW and LoadLibraryW. The GetModuleFileNameW hook makes sure that the path mpextms.exe is pointed to the legitimate location of mpextms.exe. The LoadLibraryW hook makes sure it loads the malicious EndpointDlp.dll, which is Backdoor.Mistic.
Stealth
3 techniques
Stealth
loaded from a DLL named EndpointDlp.dll, a name associated with Microsoft endpoint-security tooling. This would help the backdoor blend in with trusted software... Persistence is established through several redundant mechanisms, including Run-key entries that masquerade as legitimate remote-access software, using names such as AnyDesk, Splashtop and Comms.
A loader (version.dll) hooks GetModuleFileNameW and LoadLibraryW. The GetModuleFileNameW hook makes sure that the path mpextms.exe is pointed to the legitimate location of mpextms.exe. The LoadLibraryW hook makes sure it loads the malicious EndpointDlp.dll, which is Backdoor.Mistic.
Credential Access
1 technique
Credential Access
Collection
1 technique
Collection
IOCs tracked for this family
37 indicators attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
IPs, domains, and DNS infrastructure linked to this family.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
Other indicator types observed in public reporting.
Recent activity
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.