YARA · Malpedia signator rules
MALPEDIA_Win_Tflower_Auto
autogenerated rule brought to you by yara-signator
MalwareTflowerMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- 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: Tflower.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-tflower-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Tflower_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "b6b318ab-da35-5322-bfc0-6904101036e2"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.tflower"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.tflower_auto.yar#L1-L155"
= "N/A"
= "363250cdff28fcd23eda1338c19846d3acf92b9a2757198928248141924dee73"
= 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 = { ff15???????? 85db 7423 895e04 }
$sequence_1 = { 8bde ff36 8d85e8fdfdff c7460400000000 68???????? }
$sequence_2 = { 0001 0200 0103 0303 }
$sequence_3 = { 8bba446f4f00 c1e104 33b1416f4f00 33b9456f4f00 0fb6cc 8b842494000000 }
$sequence_4 = { 0fb60c85167c4b00 0fb63485177c4b00 8bf9 8985b4f8ffff c1e702 57 }
$sequence_5 = { 0008 7408 0002 7408 }
$sequence_6 = { 0001 7708 00f3 7608 }
$sequence_7 = { 000f 7708 0001 7708 }
$sequence_8 = { 6a2f 68???????? 56 e8???????? 83c40c 5e }
$sequence_9 = { 0010 740b 0021 740b }
$sequence_10 = { 001a 0c05 003c0c 05004e0c05 }
$sequence_11 = { 330cb5189c4e00 8b5734 33e9 8b7730 33d5 c1ca04 }
$sequence_12 = { 000b 8605???????? 007885 0500788605 }
$sequence_13 = { 0002 7408 00f7 7308 }
$sequence_14 = { 83e03f 330c8518964e00 330c95189d4e00 8b5764 }
$sequence_15 = { 8bc2 c1e818 894efe 0fb60c8520dd4e00 }
condition:
7 of them and filesize < 6578176
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ff15???????? 85db 7423 895e04 } | |
| $sequence_1 | hex | { 8bde ff36 8d85e8fdfdff c7460400000000 68???????? } | |
| $sequence_2 | hex | { 0001 0200 0103 0303 } | |
| $sequence_3 | hex | { 8bba446f4f00 c1e104 33b1416f4f00 33b9456f4f00 0fb6cc 8b842494000000 } | |
| $sequence_4 | hex | { 0fb60c85167c4b00 0fb63485177c4b00 8bf9 8985b4f8ffff c1e702 57 } | |
| $sequence_5 | hex | { 0008 7408 0002 7408 } | |
| $sequence_6 | hex | { 0001 7708 00f3 7608 } | |
| $sequence_7 | hex | { 000f 7708 0001 7708 } | |
| $sequence_8 | hex | { 6a2f 68???????? 56 e8???????? 83c40c 5e } | |
| $sequence_9 | hex | { 0010 740b 0021 740b } | |
| $sequence_10 | hex | { 001a 0c05 003c0c 05004e0c05 } | |
| $sequence_11 | hex | { 330cb5189c4e00 8b5734 33e9 8b7730 33d5 c1ca04 } | |
| $sequence_12 | hex | { 000b 8605???????? 007885 0500788605 } | |
| $sequence_13 | hex | { 0002 7408 00f7 7308 } | |
| $sequence_14 | hex | { 83e03f 330c8518964e00 330c95189d4e00 8b5764 } | |
| $sequence_15 | hex | { 8bc2 c1e818 894efe 0fb60c8520dd4e00 } |
Condition
7 of them and filesize < 6578176In plain words (Heuristic)
- The file must be smaller than 6578176 (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: b6b318ab-da35-5322-bfc0-6904101036e2
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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