T1132.001 Standard Encoding

Technique: T1132.001
Tactics: Command and Control
Research, 90 days: 3
KEV CVEs mapped: 0
SigmaHQ rules: 4
Elastic, Splunk: 3
thrunt rules: 0
Upstream: https://attack.mitre.org/techniques/T1132/001

MITRE description

Adversaries may encode data with a standard data encoding system to make the content of command and control traffic more difficult to detect. Command and control (C2) information can be encoded using a standard data encoding system that adheres to existing protocol specifications. Common data encoding schemes include ASCII, Unicode, hexadecimal, Base64, and MIME.(Citation: Wikipedia Binary-to-text Encoding)(Citation: Wikipedia Character Encoding) Some data encoding systems may also result in data compression, such as gzip.

Research citing this technique

Reports and advisories from the last 90 days that cite this technique.

2026-10-22 ESET: MythicRatatoskr: An Yggdrasil-enabled backdoor deployed in a UAC-0099-Sandworm collaboration
2026-10-19 Rapid7: Rapid7 Analysis: NetScaler intrusions chaining CVE-2026-88771 and CVE-2026-88779
2026-10-08 ESET: MATCHBOIL: New tricks, same old evil intentions

Detection coverage

SigmaHQ community rules

Elastic and Splunk rules

Base16 or Base32 Encoding/Decoding Activity (elastic)
File Compressed or Archived into Common Format by Unsigned Process (elastic)
HTTP POST Request with Encoded Payload (splunk)

Signal counts reflect the current corpus snapshot. Research citations are the technique IDs named in vendor reports and government advisories from the last 90 days; KEV mappings come from MITRE CTID. Coverage is the SigmaHQ rule inventory (core, emerging-threats, threat-hunting) at release r2026-07-01 plus Elastic and Splunk production rules. Rule bodies are not mirrored; links go upstream.