YARA · Malpedia signator rules
MALPEDIA_Win_Anchor_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: Anchor.
It defines 23 patterns (0 text, 23 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-anchor-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Anchor_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "6d13839a-1ec1-504f-9a24-f75e63119b5e"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.anchor"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.anchor_auto.yar#L1-L211"
= "N/A"
= "5bbbe06646a03dc8328467a298828d31e85ca378152e4d97a6baf9d0107bf3bd"
= 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 = { 66c740016578 c6400365 eb0a 66c74001646c }
$sequence_1 = { e8???????? 660f6ec0 f30fe6c0 f20f5e05???????? f20f5905???????? e8???????? }
$sequence_2 = { 33c9 8bf8 f7e6 0f90c1 f7d9 0bc8 51 }
$sequence_3 = { 33c9 8b4608 6689581a 8b4608 5b 6689481c }
$sequence_4 = { 66894830 33c9 8b4610 66894832 }
$sequence_5 = { f2e965020000 e9???????? 53 56 57 6a00 68a00f0000 }
$sequence_6 = { 56 e8???????? 8b30 833e00 }
$sequence_7 = { b101 e8???????? e8???????? 84c0 }
$sequence_8 = { 66894304 33c0 6a01 894306 }
$sequence_9 = { 0bc1 488b4d48 8801 488b4548 }
$sequence_10 = { 4c89742420 4c8d4dbb 4533c0 488b4d2f ff15???????? 8b4db7 }
$sequence_11 = { 00040f 830905 0000 83bd641a0000ff }
$sequence_12 = { 85c0 0f8401010000 488d05bffd0000 4a8b04e8 42f644303880 }
$sequence_13 = { 488b4338 6689480c 8d4f53 488b4338 6689480e }
$sequence_14 = { 03c2 c1f802 6bc003 894504 }
$sequence_15 = { 0bc1 4898 488d0d12920200 488b5528 }
$sequence_16 = { 66894810 8d4f7a 488b4320 6644894812 }
$sequence_17 = { 03c8 8bc1 8985a4000000 488d8da8010000 }
$sequence_18 = { e8???????? 90 488d0d06f50000 e9???????? }
$sequence_19 = { 4903c9 488b4360 418d5012 66891448 488b4360 66897c4802 }
$sequence_20 = { 05e0930400 894544 8b5544 488b4508 }
$sequence_21 = { 0000 83bd641a0000ff 0f85fc040000 c6859412000000 }
$sequence_22 = { 034524 3b8520010000 760c c785f400000001000000 }
condition:
7 of them and filesize < 778240
}
Strings (23 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 66c740016578 c6400365 eb0a 66c74001646c } | |
| $sequence_1 | hex | { e8???????? 660f6ec0 f30fe6c0 f20f5e05???????? f20f5905???????? e8???????? } | |
| $sequence_2 | hex | { 33c9 8bf8 f7e6 0f90c1 f7d9 0bc8 51 } | |
| $sequence_3 | hex | { 33c9 8b4608 6689581a 8b4608 5b 6689481c } | |
| $sequence_4 | hex | { 66894830 33c9 8b4610 66894832 } | |
| $sequence_5 | hex | { f2e965020000 e9???????? 53 56 57 6a00 68a00f0000 } | |
| $sequence_6 | hex | { 56 e8???????? 8b30 833e00 } | |
| $sequence_7 | hex | { b101 e8???????? e8???????? 84c0 } | |
| $sequence_8 | hex | { 66894304 33c0 6a01 894306 } | |
| $sequence_9 | hex | { 0bc1 488b4d48 8801 488b4548 } | |
| $sequence_10 | hex | { 4c89742420 4c8d4dbb 4533c0 488b4d2f ff15???????? 8b4db7 } | |
| $sequence_11 | hex | { 00040f 830905 0000 83bd641a0000ff } | |
| $sequence_12 | hex | { 85c0 0f8401010000 488d05bffd0000 4a8b04e8 42f644303880 } | |
| $sequence_13 | hex | { 488b4338 6689480c 8d4f53 488b4338 6689480e } | |
| $sequence_14 | hex | { 03c2 c1f802 6bc003 894504 } | |
| $sequence_15 | hex | { 0bc1 4898 488d0d12920200 488b5528 } | |
| $sequence_16 | hex | { 66894810 8d4f7a 488b4320 6644894812 } | |
| $sequence_17 | hex | { 03c8 8bc1 8985a4000000 488d8da8010000 } | |
| $sequence_18 | hex | { e8???????? 90 488d0d06f50000 e9???????? } | |
| $sequence_19 | hex | { 4903c9 488b4360 418d5012 66891448 488b4360 66897c4802 } | |
| $sequence_20 | hex | { 05e0930400 894544 8b5544 488b4508 } | |
| $sequence_21 | hex | { 0000 83bd641a0000ff 0f85fc040000 c6859412000000 } | |
| $sequence_22 | hex | { 034524 3b8520010000 760c c785f400000001000000 } |
Condition
7 of them and filesize < 778240In plain words (Heuristic)
- The file must be smaller than 778240 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
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: 6d13839a-1ec1-504f-9a24-f75e63119b5e
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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