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sidewinder-rattlesnake

Adversary-emulation profile for SideWinder (G0121 / Rattlesnake / T-APT-04 / Razor Tiger), India's suspected state-sponsored cyber-espionage actor.

55

Quality

63%

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SecuritybySnyk

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tessl review fix ./packages/decepticon/decepticon/skills/shared/adversary-emulation/sidewinder/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

61%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a well-structured, actionable adversary-emulation profile rich in specific IOCs and TTPs, but it repeats techniques across sections and lacks explicit validation checkpoints in its emulation workflow. Splitting deep reference material into bundle files and adding verification steps would raise the weaker dimensions.

Suggestions

Add explicit validation/verification checkpoints to the emulation guidance (e.g., 'Confirm target is in scope and ROE before deploying', 'Verify the side-loaded DLL executes only within the scoped host', 'Confirm implant is decommissionable after the engagement') to lift workflow clarity above the cap.

De-duplicate techniques that recur across the 'TTPs by tactic', 'Emulation guidance', and 'Detection & defense' sections — keep each section's lens distinct or cross-reference instead of restating.

Move the detailed campaign history and/or the full TTP/tooling tables into a references/ bundle file (e.g., CAMPAIGNS.md, TTPO_MATRIX.md) with one-level-deep links from SKILL.md to improve progressive disclosure.

DimensionReasoningScore

Conciseness

Most content is genuinely novel threat intelligence Claude would not already know, but the same techniques (e.g., CVE-2017-11882, DLL side-loading, mshta chains) are restated across the 'TTPs by tactic', 'Emulation guidance', and 'Detection & defense' sections, adding padding that could be tightened.

3 / 5

Actionability

The emulation and detection sections give concrete guidance with specific process names (rekeywiz.exe, mshta.exe, mstsc.exe), CVE numbers, registry paths, and WMI queries, with only minor gaps from relying on referenced sibling skills (phishing, payload-builder).

4 / 5

Workflow Clarity

The emulation guidance is roughly sequenced (initial access → execution → evasion → … → exfiltration) with an authorized-use caveat, but there are no validation/verification checkpoints for a destructive emulation workflow, so per the rubric cap workflow clarity cannot exceed 3.

3 / 5

Progressive Disclosure

The body is well organized with clear section headers and no nested references, and as a single coherent adversary profile a one-file layout is defensible; however it is a ~145-line monolith with no bundle files that could offload campaign history or detailed TTP tables into references.

4 / 5

Total

14

/

20

Passed

Description

65%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is highly specific and distinctive for a single named threat actor with strong alias-based trigger coverage, but it omits an explicit 'Use when…' clause, which caps its completeness. Adding a trigger phrase would lift the weakest dimension.

Suggestions

Append an explicit 'Use when…' clause to the description (e.g., 'Use when emulating SideWinder/T-APT-04 or mapping South Asian APT espionage TTPs') so the 'when' is stated, not just implied.

Add a concrete action verb beyond 'profile' (e.g., 'Maps and emulates SideWinder's TTPs') to strengthen the specificity of capabilities.

Include a couple of broader natural terms like 'APT' or 'threat group' alongside the aliases to broaden trigger coverage.

DimensionReasoningScore

Specificity

The description names the domain ('Adversary-emulation profile') and a concrete named subject with multiple aliases ('SideWinder (G0121 / Rattlesnake / T-APT-04 / Razor Tiger)'), but 'profile' is not a concrete action verb, so it stops at naming the domain plus 1-2 specifics rather than comprehensive actions.

3 / 5

Completeness

The 'what' is clear (an adversary-emulation profile for SideWinder), but the description field itself contains no 'Use when…' trigger clause, so per the rubric guideline completeness is capped at 3.

3 / 5

Trigger Term Quality

It packs four natural actor aliases (SideWinder, Rattlesnake, T-APT-04, Razor Tiger) plus G0121, India, and 'cyber-espionage' — terms a user would actually say — but misses a few common variations like 'APT' or 'threat group'.

4 / 5

Distinctiveness Conflict Risk

It targets a single named APT group with distinct aliases, creating a clear niche with minimal risk of triggering for an unrelated skill.

5 / 5

Total

15

/

20

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

Total

15

/

16

Passed

Repository
PurpleAILAB/Decepticon
Reviewed

Table of Contents

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