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THE HUNTER’S LEDGER
ATT&CK Technique · Command and Control
T1573.001 Symmetric Cryptography
Mapped 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.

Report Jul 2026 · under Command and Control · HIGH
KAIDO: A Brazilian Quasar-Fork RAT with Hidden-Desktop Session Hijacking
Report May 2026 · under Command and Control · HIGH
Rhadamanthys MaaS Customer Deep-Dive (79.137.192.3)
Report May 2026 · under Command and Control · HIGH
HijackLoader / Penguish / Rugmi to AsyncRAT Multi-Vector Phishing Campaign
Report Apr 2026 · under Command and Control · HIGH
AdaptixC2 Open Directory Exposure (45.130.148.125)
Report Apr 2026 · under Command and Control · HIGH
OpenStrike Expanded Toolkit — 106 New Files (2026-04-08)
Report Apr 2026 · under Command and Control · DEFINITE
OpenStrike Beacon Toolkit (172.105.0.126)
Report Apr 2026 · under Command and Control · HIGH
Shadow RAT & XWorm Open Directory Campaign
Report Apr 2026 · under Command and Control · HIGH
Open Directory at 193.56.255.154 — XiebroC2 v3.1 & Covenant C2
Report Dec 2025 · under Command and Control · HIGH
PULSAR RAT (server.exe) — Technical Analysis & Business Risk Assessment

Detection rules

Rules whose ATT&CK coverage line names this technique, by detection page. The link opens the page's coverage table.

Detection rules Jul 2026 · 2 rules
KAIDO: A Brazilian Quasar-Fork RAT with Hidden-Desktop Session Hijacking
KAIDO Anti-Analysis Sleep Obfuscation + Config Crypto Framing (YARA, Detection); KAIDO TeamKAIDO C2 TLS Certificate Issuer (SURICATA, Detection)
Detection rules May 2026 · 1 rule
HijackLoader / Penguish / Rugmi to AsyncRAT Multi-Vector Phishing Campaign
AsyncRAT SSL JA3 Fingerprint 07af4aa9e4d215a5ee63f9a0a277fbe3 (SURICATA, Detection)
Detection rules Apr 2026 · 2 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 Apr 2026 · 1 rule
OpenStrike Expanded Toolkit — 106 New Files (2026-04-08)
OpenStrike Gen-4 Beacon (YARA, Detection)
Detection rules Apr 2026 · 1 rule
OpenStrike Beacon Toolkit (172.105.0.126)
OpenStrike C Beacon Debug Strings + AES/HMAC Crypto Constants (YARA, Detection)
Detection rules Apr 2026 · 2 rules
Shadow RAT & XWorm Open Directory Campaign
Shadow 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 Apr 2026 · 1 rule
Open Directory at 193.56.255.154 — XiebroC2 v3.1 & Covenant C2
XiebroC2 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)

ATT&CK v19.2. MITRE ATT&CK® is a registered trademark of The MITRE Corporation; technique names are MITRE's and link to MITRE's own pages. The mapping on each linked page is this publication's reading of its own evidence.