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Hecamede is the cybercriminal group tracked as operating the BlackByte ransomware-as-a-service (RaaS) operation, also known as Black Byte and BlackByte Ransomware. Active since 2021, BlackByte has targeted corporate victims worldwide, including U.S. government facilities, financial organizations, and food and agriculture entities. The operation has used double extortion: affiliates or operators steal victim data, encrypt Windows systems and servers, and threaten publication through a leak site if payment is withheld. BlackByte has evolved from early C# ransomware into Go-based variants with strengthened cryptography, packing, and string obfuscation. Its operations have included exploitation of Microsoft Exchange Server vulnerabilities for initial access; reconnaissance using Active Directory and network-enumeration utilities; security-product discovery; deletion of volume shadow copies; termination or disabling of security, backup, database, and business services; firewall and sharing-configuration changes; UAC bypass; scheduled-task-based remote execution; lateral propagation through administrative shares; and process injection or process hollowing to evade defenses. BlackByte has also used custom Go-based exfiltration tooling, known as Exbyte, to identify and upload documents before ransomware deployment. The malware can impair recovery and endpoint defenses, encrypt local and network-accessible data, present ransom instructions through victim portals, and print ransom messages on connected printers.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
50 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
15 malware families attributed to this actor across reporting.
10 additional families tracked in Mallory.
10 CVEs this actor has used in observed campaigns. 10 of them exploited in the wild.
The BlackByte gang often uses phishing and/or vulnerable unpatched applications or services like vulnerable versions of SonicWall VPN or the ProxyShell vulnerability in Microsoft Exchange servers to gain access to the victim's network.
Le groupe de ransomware BlackByte exploite activement la vulnérabilité « CVE-2024-37085 » de contournement d'authentification récemment corrigée dans les hyperviseurs VMware ESXi pour déployer des ransomwares et obtenir un accès administratif complet aux réseaux des victimes.
In recent BlackByte attacks investigated by Symantec, the attackers exploited the ProxyShell (CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207) and ProxyLogon (CVE-2021-26855 and CVE-2021-27065) vulnerabilities in Microsoft Exchange Servers to gain initial access.
In recent BlackByte attacks investigated by Symantec, the attackers exploited the ProxyShell (CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207) and ProxyLogon (CVE-2021-26855 and CVE-2021-27065) vulnerabilities in Microsoft Exchange Servers to gain initial access.
This detection identifies instances where Windows Explorer.exe spawns PowerShell or cmd.exe processes, particularly focusing on executions initiated by LNK files. This behavior is associated with the ZDI-CAN-25373 Windows shortcut zero-day vulnerability, where specially crafted LNK files are used to trigger malicious code execution through cmd.exe or powershell.exe. This technique has been actively exploited by multiple APT groups in targeted attacks through both HTTP and SMB delivery methods.
5 more CVEs tied to this actor tracked in Mallory.
74 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
BlackByte appears only in the detection's annotations list.
Listed in the detection's APT annotations.
Listed in the detection's Annotations section.
BlackByte is listed in the detection's ATT&CK annotations for T1068, Exploitation for Privilege Escalation.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.