YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_Mimikatz
mimikatz
Hack toolMimikatzSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
- Author
- Benjamin DELPY (gentilkiwi)
- Date
- 2022-11-16
- Modified
- 2023-12-05
- Score / Quality
- 75 / 85
What this rule detects
mimikatz
Associated malware family: Mimikatz.
It defines 6 patterns (0 text, 6 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
mimikatz.yarDetection Rule License 1.1
rule SIGNATURE_BASE_Mimikatz : FILE
{
meta:
= "mimikatz"
= "Benjamin DELPY (gentilkiwi)"
= "840a5b8c-a311-50bc-a099-6b8ab1492e12"
= "2022-11-16"
= "2023-12-05"
= "https://github.com/Neo23x0/signature-base"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/gen_mimikatz.yar#L48-L74"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "bf972a2c0465c3bbdde6f03d91c6f479d0f66c6d3e9512355de5a973164b56a5"
= 75
= 85
= "FILE"
= "Benjamin DELPY (gentilkiwi)"
strings:
$exe_x86_1 = { 89 71 04 89 [0-3] 30 8d 04 bd }
$exe_x86_2 = { 8b 4d e? 8b 45 f4 89 75 e? 89 01 85 ff 74 }
$exe_x64_1 = { 33 ff 4? 89 37 4? 8b f3 45 85 c? 74}
$exe_x64_2 = { 4c 8b df 49 [0-3] c1 e3 04 48 [0-3] 8b cb 4c 03 [0-3] d8 }
$sys_x86 = { a0 00 00 00 24 02 00 00 40 00 00 00 [0-4] b8 00 00 00 6c 02 00 00 40 00 00 00 }
$sys_x64 = { 88 01 00 00 3c 04 00 00 40 00 00 00 [0-4] e8 02 00 00 f8 02 00 00 40 00 00 00 }
condition:
( all of ( $exe_x86_* ) ) or ( all of ( $exe_x64_* ) ) or ( any of ( $sys_* ) )
}
Strings (6 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $exe_x86_1 | hex | { 89 71 04 89 [0-3] 30 8d 04 bd } | |
| $exe_x86_2 | hex | { 8b 4d e? 8b 45 f4 89 75 e? 89 01 85 ff 74 } | |
| $exe_x64_1 | hex | { 33 ff 4? 89 37 4? 8b f3 45 85 c? 74} | |
| $exe_x64_2 | hex | { 4c 8b df 49 [0-3] c1 e3 04 48 [0-3] 8b cb 4c 03 [0-3] d8 } | |
| $sys_x86 | hex | { a0 00 00 00 24 02 00 00 40 00 00 00 [0-4] b8 00 00 00 6c 02 00 00 40 00 00 00 } | |
| $sys_x64 | hex | { 88 01 00 00 3c 04 00 00 40 00 00 00 [0-4] e8 02 00 00 f8 02 00 00 40 00 00 00 } |
Condition
( all of ( $exe_x86_* ) ) or ( all of ( $exe_x64_* ) ) or ( any of ( $sys_* ) )In plain words (Heuristic)
- All patterns in ( $exe_x86_* ) must match.
- All patterns in ( $exe_x64_* ) must match.
- At least one pattern in ( $sys_* ) must match.
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Licence & attribution
Author: Benjamin DELPY (gentilkiwi)
Source repository: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a
Licence: Detection Rule License 1.1 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 840a5b8c-a311-50bc-a099-6b8ab1492e12
Metadata
| tool_author | Benjamin DELPY (gentilkiwi) |
|---|
Tags:FILE
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