YARA · Mandiant red team tool countermeasures
FIREEYE_RT_Tool_MSIL_Sharpgrep_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 'SharpGrep' 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 'SharpGrep' 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_Tool_MSIL_Sharpgrep_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 'SharpGrep' project."
= "FireEye"
= "c7569d33-f57d-5f9c-aa2a-78866c680b5b"
= "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/SHARPPGREP/production/yara/Tool_MSIL_SharpGrep_1.yar#L4-L15"
= "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/LICENSE.txt"
= "dd8805d0e470e59b829d98397507d8c2"
= "c22bfc50b3ab3c4082006aad3c3c89684cffe1e429b001b0bb08758856a47d04"
= 75
= 73
= "FILE"
= 1
strings:
$typelibguid0 = "f65d75b5-a2a6-488f-b745-e67fc075f445" ascii nocase wide
condition:
( uint16( 0 ) == 0x5A4D and uint32( uint32( 0x3C ) ) == 0x00004550 ) and any of them
}
Strings (1 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $typelibguid0 | text | "f65d75b5-a2a6-488f-b745-e67fc075f445" | ascii nocase wide |
Condition
( uint16( 0 ) == 0x5A4D and uint32( uint32( 0x3C ) ) == 0x00004550 ) and any of themIn plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- At least one pattern in the rule must match.
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).
- dd8805d0e470e59b829d98397507d8c2
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: c7569d33-f57d-5f9c-aa2a-78866c680b5b
Metadata
| rev | 1 |
|---|
Tags:FILE
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