YARA · Mandiant red team tool countermeasures
FIREEYE_RT_Loader_MSIL_Wildchild_1
The TypeLibGUID present in a .NET binary maps directly to the ProjectGuid found in the '.csproj' file of a .NET project. This rule looks for .NET PE files that contain the ProjectGuid found in the WildChild project.
- Author
- FireEye
- Date
- 2020-12-08
- Modified
- 2020-12-09
- Score / Quality
- 75 / 73
What this rule detects
The TypeLibGUID present in a .NET binary maps directly to the ProjectGuid found in the '.csproj' file of a .NET project. This rule looks for .NET PE files that contain the ProjectGuid found in the WildChild project.
Targets: Windows PE.
It defines 1 patterns (1 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule FIREEYE_RT_Loader_MSIL_Wildchild_1 : FILE
{
meta:
= "The TypeLibGUID present in a .NET binary maps directly to the ProjectGuid found in the '.csproj' file of a .NET project. This rule looks for .NET PE files that contain the ProjectGuid found in the WildChild project."
= "FireEye"
= "350dd658-46c9-573b-b532-07e4b437ba8d"
= "2020-12-08"
= "2020-12-09"
= "https://github.com/mandiant/red_team_tool_countermeasures/"
= "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/rules/WILDCHILD/production/yara/Loader_MSIL_WildChild_1.yar#L4-L15"
= "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/LICENSE.txt"
= "7e6bc0ed11c2532b2ae7060327457812"
= "e4320e33770613542182518ec787e4ccbb32f83c8afca5ec957d4846e6f4eb04"
= 75
= 73
= "FILE"
= 4
strings:
$typelibguid1 = "2e71d5ff-ece4-4006-9e98-37bb724a7780" ascii nocase wide
condition:
( uint16( 0 ) == 0x5A4D and uint32( uint32( 0x3C ) ) == 0x00004550 ) and $typelibguid1
}
Strings (1 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $typelibguid1 | text | "2e71d5ff-ece4-4006-9e98-37bb724a7780" | ascii nocase wide |
Condition
( uint16( 0 ) == 0x5A4D and uint32( uint32( 0x3C ) ) == 0x00004550 ) and $typelibguid1In plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- Pattern $typelibguid1 must be present.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
Sample hashes
Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).
- 7e6bc0ed11c2532b2ae7060327457812
Licence & attribution
Author: FireEye
Source repository: Mandiant red team tool countermeasures @ 3561b71724
Licence: BSD 2-Clause License (repository licence)
Copyright notice: Copyright (c) 2023, MANDIANT
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 350dd658-46c9-573b-b532-07e4b437ba8d
Metadata
| rev | 4 |
|---|
Tags:FILE
Related rules
- MalwareMandiant red team tool countermeasures· FireEye· 2020-12-08
- MalwareMandiant red team tool countermeasures· FireEye· 2020-12-18
- MalwareMandiant red team tool countermeasures· FireEye· 2020-12-18
- MalwareMandiant red team tool countermeasures· FireEye· 2020-12-18
- MalwareMandiant red team tool countermeasures· FireEye· 2020-12-08
- MalwareMandiant red team tool countermeasures· FireEye· 2020-12-03
- MalwareMandiant red team tool countermeasures· FireEye· 2020-12-03
- MalwareMandiant red team tool countermeasures· FireEye· 2020-11-25