YARA · Mandiant red team tool countermeasures
FIREEYE_RT_Credtheft_MSIL_Titospecial_1
This rule looks for .NET PE files that have the strings of various method names in the TitoSpecial code.
- Author
- FireEye
- Date
- 2020-12-08
- Modified
- 2020-12-09
- Score / Quality
- 75 / 75
What this rule detects
This rule looks for .NET PE files that have the strings of various method names in the TitoSpecial code.
Targets: Windows PE.
It defines 13 patterns (13 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule FIREEYE_RT_Credtheft_MSIL_Titospecial_1 : FILE
{
meta:
= "This rule looks for .NET PE files that have the strings of various method names in the TitoSpecial code."
= "FireEye"
= "932bb013-03de-5cf7-89e9-b3232151d303"
= "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/TITOSPECIAL/production/yara/CredTheft_MSIL_TitoSpecial_1.yar#L4-L27"
= "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/LICENSE.txt"
= "4bf96a7040a683bd34c618431e571e26"
= "4ac9a5ede4aea5d73545b459eb635f87ce08ba521afa48b76d2cfa94f1379226"
= 75
= 75
= "FILE"
= 4
strings:
$str1 = "Minidump" ascii wide
$str2 = "dumpType" ascii wide
$str3 = "WriteProcessMemory" ascii wide
$str4 = "bInheritHandle" ascii wide
$str5 = "GetProcessById" ascii wide
$str6 = "SafeHandle" ascii wide
$str7 = "BeginInvoke" ascii wide
$str8 = "EndInvoke" ascii wide
$str9 = "ConsoleApplication1" ascii wide
$str10 = "getOSInfo" ascii wide
$str11 = "OpenProcess" ascii wide
$str12 = "LoadLibrary" ascii wide
$str13 = "GetProcAddress" ascii wide
condition:
( uint16( 0 ) == 0x5A4D and uint32( uint32( 0x3C ) ) == 0x00004550 ) and all of ( $str* )
}
Strings (13 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $str1 | text | "Minidump" | ascii wide |
| $str2 | text | "dumpType" | ascii wide |
| $str3 | text | "WriteProcessMemory" | ascii wide |
| $str4 | text | "bInheritHandle" | ascii wide |
| $str5 | text | "GetProcessById" | ascii wide |
| $str6 | text | "SafeHandle" | ascii wide |
| $str7 | text | "BeginInvoke" | ascii wide |
| $str8 | text | "EndInvoke" | ascii wide |
| $str9 | text | "ConsoleApplication1" | ascii wide |
| $str10 | text | "getOSInfo" | ascii wide |
| $str11 | text | "OpenProcess" | ascii wide |
| $str12 | text | "LoadLibrary" | ascii wide |
| $str13 | text | "GetProcAddress" | ascii wide |
Condition
( uint16( 0 ) == 0x5A4D and uint32( uint32( 0x3C ) ) == 0x00004550 ) and all of ( $str* )In plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- All patterns in ( $str* ) 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).
- 4bf96a7040a683bd34c618431e571e26
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: 932bb013-03de-5cf7-89e9-b3232151d303
Metadata
| rev | 4 |
|---|
Tags:FILE
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