ATT&CK Technique · Command and Control
T1573.001 Symmetric CryptographyMapped by 9 reports, 10 detection rules and 8 tracked actors on The Hunters Ledger. Technique page on attack.mitre.org.
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Reports
Each report maps this technique in its own ATT&CK table, at the confidence the report states. The link opens that table.
Detection rules
Rules whose ATT&CK coverage line names this technique, by detection page. The link opens the page's coverage table.
Detection rules
KAIDO: A Brazilian Quasar-Fork RAT with Hidden-Desktop Session HijackingKAIDO Anti-Analysis Sleep Obfuscation + Config Crypto Framing (YARA, Detection); KAIDO TeamKAIDO C2 TLS Certificate Issuer (SURICATA, Detection)
Detection rules
HijackLoader / Penguish / Rugmi to AsyncRAT Multi-Vector Phishing CampaignAsyncRAT SSL JA3 Fingerprint 07af4aa9e4d215a5ee63f9a0a277fbe3 (SURICATA, Detection)
Detection rules
AdaptixC2 Open Directory Exposure (45.130.148.125)AdaptixC2 Default Listener: Anomalous Firefox 20 User-Agent with X-Beacon-Id Header (SIGMA, Hunting); AdaptixC2 Beacon Empty-Body POST Carrying the X-Beacon-Id Header (SURICATA, Detection)
Detection rules
OpenStrike Expanded Toolkit — 106 New Files (2026-04-08)OpenStrike Gen-4 Beacon (YARA, Detection)
Detection rules
OpenStrike Beacon Toolkit (172.105.0.126)OpenStrike C Beacon Debug Strings + AES/HMAC Crypto Constants (YARA, Detection)
Detection rules
Shadow RAT & XWorm Open Directory CampaignShadow RAT v2.6.4.0 Client: Namespace + Costura Fingerprint (YARA, Detection); Shadow RAT v2.6.4.0: Shadow.Common.dll Shared Library (YARA, Detection)
Detection rules
Open Directory at 193.56.255.154 — XiebroC2 v3.1 & Covenant C2XiebroC2 v3.1 Go TCP Implant: Source-Code Artifact Combination (YARA, Detection)
Tracked actors
Designations whose reports map this technique.
- UTA-2026-002: XiebroC2 and Covenant operator working from a Chinese-language build environment
- UTA-2026-003: Commodity MaaS consumer running Shadow RAT and XWorm from one Windows VPS
- UTA-2026-004: Developer of the OpenStrike multi-implant C2 toolkit, with a cracked Cobalt Strike arsenal
- UTA-2026-006: Stock AdaptixC2 operator with an operator-written PowerShell and .NET injection chain
- UTA-2026-007: HijackLoader customer running a 15-month multi-vector phishing campaign into an AsyncRAT-class RAT
- UTA-2026-008: Developer and operator of the BellaMain Turkish phishing-as-a-service panel
- UTA-2026-009: Multi-product fraud operator pairing a real VPN service with a brand-impersonation phishing library
- UTA-2026-010: Rhadamanthys MaaS customer with a self-built loader (customer side only, never the vendor)
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