tool

WEBC2 S0109

Type: malware
Platform: Windows
Created: 31 May 2017
Last modified: 26 December 2023

WEBC2 is a family of backdoor malware used by APT1 as early as July 2006. WEBC2 backdoors are designed to retrieve a webpage, with commands hidden in HTML comments or special tags, from a predetermined C2 server. [1][2]

TechniquesBottom 12%

TacticsBottom 21%

Threat groupunranked

CampaignsNone recorded

Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.

MITRE reference S0109

Windows Command Shell T1059.003↗

WEBC2 can open an interactive command shell.3

Execution61 detection rules

Ingress Tool Transfer T1105↗

WEBC2 can download and execute a file.4

Command and Control129 detection rules

DLL T1574.001↗

Variants of WEBC2 achieve persistence by using DLL search order hijacking, usually by copying the DLL file to %SYSTEMROOT% (C:\WINDOWS\ntshrui.dll).5

Execution · Stealth110 detection rules

Standing S0109

Reach is how much of ATT&CK this tool touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.

Reach

Techniques3Bottom 12%

12th percentile · 88% of 825 ATT&CK software entries have more Enterprise techniques.

Tactics3Bottom 21%

21st percentile · 79% of 825 ATT&CK software entries have more tactics spanned.

Threat group161% tie · 22 values

61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.

Campaigns085% tie · 8 values

85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.

Coverage

Rules / technique110medTop 1%

100th percentile · None of the 825 ATT&CK software entries has more detection rules per technique — the highest in the population.

Tests / technique7med

Detection coverage S0109

297 distinct rules cover the 3 techniques recorded for this tool. The 300 technique-to-rule mappings resolve to 297 distinct rules, because one rule can cover several techniques. 223 Sigma · 74 Splunk.

3 covered by at least one rule297 distinct rules in total

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MITRE reference S0109

Reach

Coverage

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