YARA · Malpedia signator rules
MALPEDIA_Win_Flash_Develop_Auto
autogenerated rule brought to you by yara-signator
MalwareFlash DevelopMalpedia 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: Flash Develop.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-flash-develop-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Flash_Develop_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "4688ecaa-1305-56f1-b990-d34d1967b3cd"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.flash_develop"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.flash_develop_auto.yar#L1-L125"
= "N/A"
= "1b0b49a0bdf8cbe355d0f549d184abf36cc5a8a27ac3e4b70ddcdc76ec6e38f0"
= 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 = { 55 56 33c9 57 0fb68170034200 99 8bf0 }
$sequence_1 = { 33fa 0fa4f708 c1e608 8934cd40484800 99 }
$sequence_2 = { c78424c8020000e0b04600 c78424cc02000068df4600 c78424d0020000b40d4700 c78424d4020000503e4700 c78424d8020000446e4700 c78424dc0200000c9d4700 c78424e0020000b0cc4700 }
$sequence_3 = { 891ccd28184800 892ccd2c184800 0fa4f710 c1e610 33f0 33fa 0fa4f708 }
$sequence_4 = { 33fa c1e308 892ccd2c204800 8bef 0fa4f708 891ccd28204800 8bde }
$sequence_5 = { 893ccd44484800 8bf0 8bfa 0fa4f708 }
$sequence_6 = { 892ccd34204800 8bef 0fa4f708 33fa 891ccd30204800 8bde c1e608 }
$sequence_7 = { c7842464010000240a4200 c7842468010000043a4200 c784246c01000070694200 c7842470010000cc9a4200 }
$sequence_8 = { 0fb68170054200 33ea 0fa4dd10 33fa 99 8934cd28304800 }
$sequence_9 = { 893ccd44404800 83c104 81f900010000 0f8c39f8ffff 5f 5e 5d }
condition:
7 of them and filesize < 1111040
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 55 56 33c9 57 0fb68170034200 99 8bf0 } | |
| $sequence_1 | hex | { 33fa 0fa4f708 c1e608 8934cd40484800 99 } | |
| $sequence_2 | hex | { c78424c8020000e0b04600 c78424cc02000068df4600 c78424d0020000b40d4700 c78424d4020000503e4700 c78424d8020000446e4700 c78424dc0200000c9d4700 c78424e0020000b0cc47 … | |
| $sequence_3 | hex | { 891ccd28184800 892ccd2c184800 0fa4f710 c1e610 33f0 33fa 0fa4f708 } | |
| $sequence_4 | hex | { 33fa c1e308 892ccd2c204800 8bef 0fa4f708 891ccd28204800 8bde } | |
| $sequence_5 | hex | { 893ccd44484800 8bf0 8bfa 0fa4f708 } | |
| $sequence_6 | hex | { 892ccd34204800 8bef 0fa4f708 33fa 891ccd30204800 8bde c1e608 } | |
| $sequence_7 | hex | { c7842464010000240a4200 c7842468010000043a4200 c784246c01000070694200 c7842470010000cc9a4200 } | |
| $sequence_8 | hex | { 0fb68170054200 33ea 0fa4dd10 33fa 99 8934cd28304800 } | |
| $sequence_9 | hex | { 893ccd44404800 83c104 81f900010000 0f8c39f8ffff 5f 5e 5d } |
Condition
7 of them and filesize < 1111040In plain words (Heuristic)
- The file must be smaller than 1111040 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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: 4688ecaa-1305-56f1-b990-d34d1967b3cd
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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