YARA · Malpedia signator rules
MALPEDIA_Win_Dyre_Auto
autogenerated rule brought to you by yara-signator
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-05-04
- Modified
- 2026-05-18
- Score / Quality
- 75 / 73
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Dyre.
It defines 23 patterns (0 text, 23 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-dyre-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Dyre_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "879fa518-5ec4-5357-9185-f9232454f0a1"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.dyre"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.dyre_auto.yar#L1-L219"
= "N/A"
= "2b303cca8d128a9a4485286d6382ca7c5e74c54a7012acc9a782dd63fd41e54f"
= 75
= 73
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 6800004000 6800000400 ff15???????? a3???????? }
$sequence_1 = { 32c0 5d c3 55 8bec 56 8bf0 }
$sequence_2 = { 6801010000 ff15???????? 8b4d18 663901 }
$sequence_3 = { 7707 0fbec0 2bc1 eb1e 8d58bf }
$sequence_4 = { 0540060000 c3 8d440064 c3 55 8bec }
$sequence_5 = { 50 ff75f8 ff75f4 ff36 }
$sequence_6 = { 32c0 5e 5d c3 8bc6 }
$sequence_7 = { 0fb7c0 0bc1 c9 c3 }
$sequence_8 = { 4433c0 418bc4 418bd3 c1c806 4433c0 8bc5 }
$sequence_9 = { 4883ec40 488bc2 33ff 4c8be1 48897c2430 4533c9 }
$sequence_10 = { 6689442444 33c0 498bf8 488bf2 }
$sequence_11 = { 488bd9 83fa04 763b 0f1f00 0fb74b02 ff15???????? 440fb7d8 }
$sequence_12 = { 23cd 418bc5 c1c806 8bd3 4433c0 }
$sequence_13 = { 488bd9 b910270000 ff15???????? 488bcb }
$sequence_14 = { 4433c0 418bc4 4123c5 33c8 8bc3 4403c1 418bcb }
$sequence_15 = { 443bdf 7725 663933 7432 }
$sequence_16 = { 668b1401 668910 83c002 4e 75f3 }
$sequence_17 = { 90 ff15???????? 8a0437 8806 46 4b }
$sequence_18 = { 56 8bf1 85db 7416 }
$sequence_19 = { 57 8bfa 2bfe 90 ff15???????? 8a0437 }
$sequence_20 = { 85db 7416 57 8bfa }
$sequence_21 = { 751b 6a00 6800004000 6800000400 }
$sequence_22 = { a1???????? 6a08 50 ff15???????? 8bd8 }
condition:
7 of them and filesize < 590848
}
Strings (23 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 6800004000 6800000400 ff15???????? a3???????? } | |
| $sequence_1 | hex | { 32c0 5d c3 55 8bec 56 8bf0 } | |
| $sequence_2 | hex | { 6801010000 ff15???????? 8b4d18 663901 } | |
| $sequence_3 | hex | { 7707 0fbec0 2bc1 eb1e 8d58bf } | |
| $sequence_4 | hex | { 0540060000 c3 8d440064 c3 55 8bec } | |
| $sequence_5 | hex | { 50 ff75f8 ff75f4 ff36 } | |
| $sequence_6 | hex | { 32c0 5e 5d c3 8bc6 } | |
| $sequence_7 | hex | { 0fb7c0 0bc1 c9 c3 } | |
| $sequence_8 | hex | { 4433c0 418bc4 418bd3 c1c806 4433c0 8bc5 } | |
| $sequence_9 | hex | { 4883ec40 488bc2 33ff 4c8be1 48897c2430 4533c9 } | |
| $sequence_10 | hex | { 6689442444 33c0 498bf8 488bf2 } | |
| $sequence_11 | hex | { 488bd9 83fa04 763b 0f1f00 0fb74b02 ff15???????? 440fb7d8 } | |
| $sequence_12 | hex | { 23cd 418bc5 c1c806 8bd3 4433c0 } | |
| $sequence_13 | hex | { 488bd9 b910270000 ff15???????? 488bcb } | |
| $sequence_14 | hex | { 4433c0 418bc4 4123c5 33c8 8bc3 4403c1 418bcb } | |
| $sequence_15 | hex | { 443bdf 7725 663933 7432 } | |
| $sequence_16 | hex | { 668b1401 668910 83c002 4e 75f3 } | |
| $sequence_17 | hex | { 90 ff15???????? 8a0437 8806 46 4b } | |
| $sequence_18 | hex | { 56 8bf1 85db 7416 } | |
| $sequence_19 | hex | { 57 8bfa 2bfe 90 ff15???????? 8a0437 } | |
| $sequence_20 | hex | { 85db 7416 57 8bfa } | |
| $sequence_21 | hex | { 751b 6a00 6800004000 6800000400 } | |
| $sequence_22 | hex | { a1???????? 6a08 50 ff15???????? 8bd8 } |
Condition
7 of them and filesize < 590848In plain words (Heuristic)
- The file must be smaller than 590848 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
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Licence & attribution
Author: Felix Bilstein - yara-signator at cocacoding dot com
Source repository: Malpedia signator rules @ c901f97b7d
Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 879fa518-5ec4-5357-9185-f9232454f0a1
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260422 |
| malpedia_hash | a182e35da64e6d71cb55f125c4d4225196523f14 |
| malpedia_version | 20260504 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
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