YARA · Malpedia signator rules
MALPEDIA_Win_Floxif_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 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Floxif.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-floxif-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Floxif_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "acb02d64-9c01-5139-a9b7-c99a7c71c8c5"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.floxif"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.floxif_auto.yar#L1-L126"
= "N/A"
= "65aabe0618ff29144b3651b5eefefbab27efaa678d9484e0fef3171c8e7b36e2"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 53 56 57 e8???????? c3 bd8d459050 8d4df0 }
$sequence_1 = { c70000000000 8b4dfc 83791000 7417 }
$sequence_2 = { 51 8b550c 52 ff15???????? 8b4518 50 8b4d14 }
$sequence_3 = { 8d45fc 50 8b4d1c 51 8b5518 52 8b45b4 }
$sequence_4 = { 7627 8d4df8 51 8b55fc 52 ff15???????? 3b45f4 }
$sequence_5 = { 0f8ca3000000 81fb8a000000 0f8f97000000 56 57 8b7d0c 8b34bd940e0210 }
$sequence_6 = { c1f905 56 57 8b348d805f0210 8d1c8d805f0210 8d3cc0 }
$sequence_7 = { 25ff000000 85c0 7449 6a00 68???????? e8???????? }
$sequence_8 = { 2bd1 8955fc 8b45f0 8b4804 034d0c 894df4 eb1a }
$sequence_9 = { 85c0 7452 c685a4fdffff01 8d4d98 }
condition:
7 of them and filesize < 352256
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 53 56 57 e8???????? c3 bd8d459050 8d4df0 } | |
| $sequence_1 | hex | { c70000000000 8b4dfc 83791000 7417 } | |
| $sequence_2 | hex | { 51 8b550c 52 ff15???????? 8b4518 50 8b4d14 } | |
| $sequence_3 | hex | { 8d45fc 50 8b4d1c 51 8b5518 52 8b45b4 } | |
| $sequence_4 | hex | { 7627 8d4df8 51 8b55fc 52 ff15???????? 3b45f4 } | |
| $sequence_5 | hex | { 0f8ca3000000 81fb8a000000 0f8f97000000 56 57 8b7d0c 8b34bd940e0210 } | |
| $sequence_6 | hex | { c1f905 56 57 8b348d805f0210 8d1c8d805f0210 8d3cc0 } | |
| $sequence_7 | hex | { 25ff000000 85c0 7449 6a00 68???????? e8???????? } | |
| $sequence_8 | hex | { 2bd1 8955fc 8b45f0 8b4804 034d0c 894df4 eb1a } | |
| $sequence_9 | hex | { 85c0 7452 c685a4fdffff01 8d4d98 } |
Condition
7 of them and filesize < 352256In plain words (Heuristic)
- The file must be smaller than 352256 (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: acb02d64-9c01-5139-a9b7-c99a7c71c8c5
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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