Industroyer
Industroyer, also known as CrashOverride and Win32/Industroyer, is a modular ICS/OT malware framework used to disrupt electric power infrastructure. It is most closely associated with Sandworm, a GRU-linked threat group, and was used in the December 2016 attack on Ukraine’s power grid; a newer variant, Industroyer2, was identified by ESET and CERT-UA in 2022 in a thwarted attempt to cut power in Ukraine again.
The malware is protocol-aware and was built to interact directly with industrial control systems using legitimate commands rather than relying primarily on software exploitation. Reported protocol support in the original framework includes IEC 60870-5-101, IEC 60870-5-104, IEC 61850, and OPC DA. In the 2016 Ukraine attack, it used legitimate industrial protocol function codes to open breakers at substations and automatically disconnect portions of the grid. Multiple sources in the content state that the malware can remotely control switches and circuit breakers in high-voltage substations, force breakers to remain open, and repeatedly toggle breakers until protective measures isolate a substation and trigger a blackout. The 2022 Industroyer2 variant is described as customized for IEC-104.
Industroyer also included additional disruptive components. The content states it had a DoS module targeting Siemens SIPROTEC protective relays via CVE-2015-5374, using specially crafted packets to UDP port 50000, and a data wiper component that enumerates keys under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services. The broader Ukraine attack sequence associated with Sandworm also involved destructive tooling such as KillDisk in related operations.
On Windows systems, Industroyer used persistence through Windows service abuse. The content states it could use an arbitrary system service to load at system boot and that attackers replaced the ImagePath registry value of a Windows service with a new backdoor binary. Its main backdoor communicated with a remote command-and-control server over HTTPS, sent hardware profile information and previously received commands back via HTTP POST requests, and reportedly used Tor nodes for C2.
The malware self-identifies as "crash" in multiple locations, which led to the CrashOverride naming convention, but Industroyer is the more widely used industry name. High-confidence associations in the content tie it to attacks against Ukrainian energy infrastructure and to Sandworm’s broader campaign history targeting critical infrastructure and OT environments.
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Vulnerabilities exploited
1 CVE Mallory has correlated with this family across public research and vendor advisories. Each row links to the full Mallory page for that vulnerability.
Дополнительный DoS-модуль эксплуатировал CVE-2015-5374 в Siemens SIPROTEC - специально сформированные пакеты на порт 50000/UDP вызывали отказ защитных реле (CWE-19, затронуты SIPROTEC 4, SIPROTEC Compact, EN100 Ethernet module). | Industroyer (2016) использовал легитимные function codes промышленных протоколов (IEC 60870-5-101/104, IEC 61850, OPC DA) для размыкания выключателей украинских подстанций. Дополнительный DoS-модуль эксплуатировал CVE-2015-5374 в Siemens SIPROTEC.
Groups observed using it
5 distinct threat actors attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
Industroyer can use an arbitrary system service to load at system boot for persistence and replaces the ImagePath registry value of a Windows service with a new backdoor binary.
For example, industrial attack techniques employed by Triton and Industroyer were used by actors ranging from FIN11 to FIN6 during ransomware deployment, extortion and other activities.
For example, industrial attack techniques employed by Triton and Industroyer were used by actors ranging from FIN11 to FIN6 during ransomware deployment, extortion and other activities.
Signature Malware: Custom wipers (e.g. “Av3ngers” family), Industroyer-like ICS tools, Rust-enhanced payloads.
Public reports from ESET and Dragos outlining a new, highly capable Industrial Controls Systems (ICS) attack platform that was reportedly used in 2016 against critical infrastructure in Ukraine... the CrashOverride malware is an extensible platform that could be used to target critical infrastructure sectors.
Techniques & procedures
32 distinct techniques documented for this family, organized by ATT&CK tactic.
Initial Access
1 technique
Initial Access
Execution
2 techniques
Execution
Persistence
2 techniques
Persistence
Privilege Escalation
1 technique
Privilege Escalation
Stealth
7 techniques
Stealth
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.
‘Kills’ legitimate the master process on the victim host • Masquerades as the new master
The content repeatedly describes malware and threat actors decoding, decrypting, deobfuscating, or unpacking payloads, strings, configuration data, commands, and C2 responses prior to execution or use.
Malware families such as CrashOverride and BlackEnergy, among others, demonstrate the ability to disrupt physical processes, while living-off-the-land (LOTL) techniques allow attackers to blend into normal operations.
Discovery
8 techniques
Discovery
The content repeatedly describes malware and threat actors querying, enumerating, searching, reading, or checking Windows Registry keys and values, e.g., "ADVSTORESHELL can enumerate registry keys," "APT41 queried registry values to determine items such as configured RDP ports and network configurations," and "Reg may be used to gather details from the Windows Registry of a local or remote system at the command-line interface."
The content repeatedly describes malware and threat actors using commands and APIs such as ipconfig /all, ifconfig, arp -a, route print, nbtstat, netsh, GetAdaptersInfo, and GetIpNetTable to gather IP addresses, MAC addresses, DNS, DHCP, gateways, routing tables, ARP cache, proxy settings, domains, and network adapter/interface details.
without a configuration file it enumerates the local network to identify potential targets
The command sequence polls the target device for the appropriate addresses.
The first action is to try to kill the communications service process which acts as the master process.
The backdoor then sends a series of HTTP POST requests with the victim’s Windows GUID (a unique identifier set with every Windows installation) in the HTTP body.
The content repeatedly describes malware and threat actors listing files and directories, enumerating drives, searching for files by extension/name/path, retrieving file metadata, and browsing file systems (for example: "APT28 has used Forfiles to locate PDF, Excel, and Word documents during collection" and "cmd can be used to find files and directories with native functionality such as dir commands").
Lateral Movement
2 techniques
Lateral Movement
Collection
1 technique
Collection
Command and Control
5 techniques
Command and Control
AsyncRAT can proxy C2 through a Tor client. Attor has used Tor for C2 communication. Cyclops Blink has used Tor nodes for C2 traffic. GreyEnergy has used Tor relays for Command and Control servers. Siloscape uses Tor to communicate with C2. WannaCry uses Tor for command and control traffic.
The content repeatedly describes threat actors and malware using HTTP and HTTPS for command and control, such as: "Sandworm Team used BlackEnergy to communicate between compromised hosts and their command-and-control servers via HTTP post requests."
On execution, the malware attempts to contact a hard-coded proxy address located within the local network. ELECTRUM must establish the internal proxy before the installation of the backdoor.
During the 2025 Poland Wiper Attacks, the adversaries utilized Tor nodes for C2. APT28 has routed traffic over Tor and VPN servers to obfuscate their activities. A backdoor used by APT29 created a Tor hidden service to forward traffic from the Tor client to local ports 3389 (RDP), 139 (Netbios), and 445 (SMB) enabling full remote access from outside the network.
Exfiltration
1 technique
Exfiltration
ADVSTORESHELL exfiltrates data over the same channel used for C2... Agrius exfiltrated staged data using tools such as Putty and WinSCP, communicating with command and control servers... numerous malware and groups sent victim data, files, credentials, or host information over existing C2 channels.
Impact
6 techniques
Impact
Overwrites all ICS configuration files across the hard drives and all mapped network drives specifically targeting ABB PCM600 configuration files in this sample
The first action is to try to kill the communications service process which acts as the master process.
the module sends UDP packets to port 50000 exploiting CVE-2015-5374 causing the SIPROTEC digital relay to fall into an unresponsive state
The first task of the wiper writes zeros into all of the registry keys in: SYSTEM\CurrentControlSet\Services
IOCs tracked for this family
13 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.
Recent activity
74 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Модульное OT/ICS-вредоносное ПО, разработанное для воздействия на энергетическую инфраструктуру через промышленные протоколы, включая IEC 101/104, IEC 61850 и OPC DA.
ICS malware that disrupted part of Ukraine's power grid by using industrial protocols.
ICS malware used legitimate industrial protocol function codes to open breakers at Ukrainian substations; an additional DoS module exploited Siemens SIPROTEC vulnerability CVE-2015-5374.
ICS malware used to disrupt electric power operations by issuing commands over OT protocols to substations.
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.