Grandoreiro can identify installed security tools based on window names.3
tool
Grandoreiro S0531
- Type
- malware
- Platform
- Windows
- Created
- 10 November 2020
- Last modified
- 11 April 2024
Grandoreiro is a banking trojan written in Delphi that was first observed in 2016 and uses a Malware-as-a-Service (MaaS) business model. Grandoreiro has confirmed victims in Brazil, Mexico, Portugal, and Spain.[1][2]
43
TechniquesTop 2%
11
TacticsTop 2%
0
Threat groupsNone recorded
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0531
Grandoreiro can determine the IP and physical location of the compromised host via IPinfo.4
Grandoreiro has added BMP images to the resources section of its Portable Executable (PE) file increasing each binary to at least 300MB in size.5
Grandoreiro can store its configuration in the Registry at HKCU\Software\ under frequently changing names including %USERNAME% and ToolTech-RM.6
The Grandoreiro payload has been delivered encrypted with a custom XOR-based algorithm and also as a base64-encoded ZIP file.788
Grandoreiro can collect the username from the victim's machine.10
Standing S0531
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
Techniques43Top 2%
98th percentile · 98% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics11Top 2%
98th percentile · 98% of 825 ATT&CK software entries have this many tactics spanned or fewer.
Threat groups061% 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 / technique12medBottom 21%
21st percentile · 79% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique5med
Detection coverage S0531
1212 distinct rules cover the 43 techniques recorded for this tool. The 1293 technique-to-rule mappings resolve to 1212 distinct rules, because one rule can cover several techniques. 764 Sigma · 448 Splunk.
42 covered by at least one rule1 with no coverage1212 distinct rules in total
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