YARA · Malpedia signator rules
MALPEDIA_Win_Icedid_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: Icedid.
It defines 32 patterns (0 text, 32 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-icedid-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Icedid_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "e3feaa9e-d97b-5f74-9f3e-a5fa4f0b6f05"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.icedid"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.icedid_auto.yar#L1-L299"
= "N/A"
= "ed1ed091ec9117c7c218c9d403fcd5fa7b3597478582b7d813b2c339022a1341"
= 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 = { 50 ff15???????? 33c0 40 eb11 }
$sequence_1 = { 83e800 7439 83e801 741f 83e801 }
$sequence_2 = { 7511 56 57 ff15???????? 50 }
$sequence_3 = { 0fb705???????? 50 51 0fb60d???????? }
$sequence_4 = { 7427 6a3b 56 ff15???????? 8bf8 }
$sequence_5 = { be01000080 50 56 ff15???????? }
$sequence_6 = { 7413 ff36 6a08 ff15???????? 50 }
$sequence_7 = { ff15???????? 50 ff15???????? 8bf7 8bc6 eb02 }
$sequence_8 = { 8bf0 8d45fc 50 ff75fc 6a05 }
$sequence_9 = { 3bfd 72c4 8b542414 0302 833800 }
$sequence_10 = { 8954241c 66c16c241c0c 0fb7d2 c744241000100000 663b542410 7215 }
$sequence_11 = { 743f 8d5808 0fb713 8954241c 66c16c241c0c }
$sequence_12 = { 3b7820 72d1 5b 33c0 }
$sequence_13 = { 8b12 85d2 7454 8d6af8 }
$sequence_14 = { 2345fc 8be5 5d c3 55 8bec ff7518 }
$sequence_15 = { 57 33ff 397820 7633 }
$sequence_16 = { ff15???????? 85c0 750a b8010000c0 }
$sequence_17 = { a808 75f5 a804 7406 }
$sequence_18 = { ff5010 85c0 7407 33c0 e9???????? }
$sequence_19 = { 8be9 49 8bd9 b901000000 49 8bf8 }
$sequence_20 = { 3b13 7309 ebea 41 c70601000000 }
$sequence_21 = { 0f8493000000 44 0fb6441309 48 8d442440 48 }
$sequence_22 = { 741f 81fbee1607d8 7410 81fbc46469f1 b803000000 }
$sequence_23 = { ff15???????? 85c0 7507 b806000000 eb11 8b442438 f7d8 }
$sequence_24 = { 488bf2 488bd9 ff15???????? 4885c0 7504 }
$sequence_25 = { 4883ff04 0f8210010000 4883ef04 48897c2430 4885db }
$sequence_26 = { 7504 33c0 eb7e 488d15550d0000 488bc8 ff15???????? 488bf8 }
$sequence_27 = { 443bc9 7458 4585d2 7420 }
$sequence_28 = { ff15???????? 4c8bc3 33d2 488bc8 ff15???????? 488bb590020000 4885f6 }
$sequence_29 = { 741e 498b1f 4885db 7414 ff15???????? 4c8bc3 }
$sequence_30 = { 74e4 4533c9 48895c2420 4533c0 33c9 418d511a ff15???????? }
$sequence_31 = { ff15???????? ffc7 3b7b1c 72d7 8b430c 4803c6 0f845affffff }
condition:
7 of them and filesize < 303104
}
Strings (32 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 50 ff15???????? 33c0 40 eb11 } | |
| $sequence_1 | hex | { 83e800 7439 83e801 741f 83e801 } | |
| $sequence_2 | hex | { 7511 56 57 ff15???????? 50 } | |
| $sequence_3 | hex | { 0fb705???????? 50 51 0fb60d???????? } | |
| $sequence_4 | hex | { 7427 6a3b 56 ff15???????? 8bf8 } | |
| $sequence_5 | hex | { be01000080 50 56 ff15???????? } | |
| $sequence_6 | hex | { 7413 ff36 6a08 ff15???????? 50 } | |
| $sequence_7 | hex | { ff15???????? 50 ff15???????? 8bf7 8bc6 eb02 } | |
| $sequence_8 | hex | { 8bf0 8d45fc 50 ff75fc 6a05 } | |
| $sequence_9 | hex | { 3bfd 72c4 8b542414 0302 833800 } | |
| $sequence_10 | hex | { 8954241c 66c16c241c0c 0fb7d2 c744241000100000 663b542410 7215 } | |
| $sequence_11 | hex | { 743f 8d5808 0fb713 8954241c 66c16c241c0c } | |
| $sequence_12 | hex | { 3b7820 72d1 5b 33c0 } | |
| $sequence_13 | hex | { 8b12 85d2 7454 8d6af8 } | |
| $sequence_14 | hex | { 2345fc 8be5 5d c3 55 8bec ff7518 } | |
| $sequence_15 | hex | { 57 33ff 397820 7633 } | |
| $sequence_16 | hex | { ff15???????? 85c0 750a b8010000c0 } | |
| $sequence_17 | hex | { a808 75f5 a804 7406 } | |
| $sequence_18 | hex | { ff5010 85c0 7407 33c0 e9???????? } | |
| $sequence_19 | hex | { 8be9 49 8bd9 b901000000 49 8bf8 } | |
| $sequence_20 | hex | { 3b13 7309 ebea 41 c70601000000 } | |
| $sequence_21 | hex | { 0f8493000000 44 0fb6441309 48 8d442440 48 } | |
| $sequence_22 | hex | { 741f 81fbee1607d8 7410 81fbc46469f1 b803000000 } | |
| $sequence_23 | hex | { ff15???????? 85c0 7507 b806000000 eb11 8b442438 f7d8 } | |
| $sequence_24 | hex | { 488bf2 488bd9 ff15???????? 4885c0 7504 } | |
| $sequence_25 | hex | { 4883ff04 0f8210010000 4883ef04 48897c2430 4885db } | |
| $sequence_26 | hex | { 7504 33c0 eb7e 488d15550d0000 488bc8 ff15???????? 488bf8 } | |
| $sequence_27 | hex | { 443bc9 7458 4585d2 7420 } | |
| $sequence_28 | hex | { ff15???????? 4c8bc3 33d2 488bc8 ff15???????? 488bb590020000 4885f6 } | |
| $sequence_29 | hex | { 741e 498b1f 4885db 7414 ff15???????? 4c8bc3 } | |
| $sequence_30 | hex | { 74e4 4533c9 48895c2420 4533c0 33c9 418d511a ff15???????? } | |
| $sequence_31 | hex | { ff15???????? ffc7 3b7b1c 72d7 8b430c 4803c6 0f845affffff } |
Condition
7 of them and filesize < 303104In plain words (Heuristic)
- The file must be smaller than 303104 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: e3feaa9e-d97b-5f74-9f3e-a5fa4f0b6f05
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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