tool

ZxxZ S1013

Type: malware
Platform: Windows
Created: 2 June 2022
Last modified: 10 April 2024

ZxxZ is a trojan written in Visual C++ that has been used by BITTER since at least August 2021, including against Bangladeshi government personnel.[1]

Techniques61st pct

TacticsTop 20%

Threat groupunranked

CampaignsNone recorded

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

MITRE reference S1013

Data from Local System T1005↗

ZxxZ can collect data from a compromised host.2

Collection22 detection rules

Query Registry T1012↗

ZxxZ can search the registry of a compromised host.3

Discovery27 detection rules

Encrypted/Encoded File T1027.013↗

ZxxZ has been encoded to avoid detection from static analysis tools.4

Stealth1 detection rules

System Owner/User Discovery T1033↗

ZxxZ can collect the username from a compromised host.5

Discovery47 detection rules

Masquerade Task or Service T1036.004↗

ZxxZ has been disguised as a Windows security update service.6

Stealth4 detection rules

Scheduled Task T1053.005↗

ZxxZ has used scheduled tasks for persistence and execution.7

Execution · Persistence · Privilege Escalation79 detection rules

Standing S1013

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

Techniques1461st pct

61st percentile · 61% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.

Tactics8Top 20%

80th percentile · 80% of 825 ATT&CK software entries have this many tactics spanned or fewer.

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 / technique24.5med58th pct

58th percentile · 58% of 825 ATT&CK software entries have this many detection rules per technique or fewer.

Tests / technique8med

Detection coverage S1013

516 distinct rules cover the 14 techniques recorded for this tool. The 538 technique-to-rule mappings resolve to 516 distinct rules, because one rule can cover several techniques. 335 Sigma · 181 Splunk.

14 covered by at least one rule516 distinct rules in total

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MITRE reference S1013

Reach

Coverage

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