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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:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "4688ecaa-1305-56f1-b990-d34d1967b3cd"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.flash_develop"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.flash_develop_auto.yar#L1-L125"
		license_url = "N/A"
		logic_hash = "1b0b49a0bdf8cbe355d0f549d184abf36cc5a8a27ac3e4b70ddcdc76ec6e38f0"
		score = 75
		quality = 75
		tags = "FILE"
		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"

	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)

IdentifierTypeValueModifiers
$sequence_0hex{ 55 56 33c9 57 0fb68170034200 99 8bf0 }
$sequence_1hex{ 33fa 0fa4f708 c1e608 8934cd40484800 99 }
$sequence_2hex{ c78424c8020000e0b04600 c78424cc02000068df4600 c78424d0020000b40d4700 c78424d4020000503e4700 c78424d8020000446e4700 c78424dc0200000c9d4700 c78424e0020000b0cc47 …
$sequence_3hex{ 891ccd28184800 892ccd2c184800 0fa4f710 c1e610 33f0 33fa 0fa4f708 }
$sequence_4hex{ 33fa c1e308 892ccd2c204800 8bef 0fa4f708 891ccd28204800 8bde }
$sequence_5hex{ 893ccd44484800 8bf0 8bfa 0fa4f708 }
$sequence_6hex{ 892ccd34204800 8bef 0fa4f708 33fa 891ccd30204800 8bde c1e608 }
$sequence_7hex{ c7842464010000240a4200 c7842468010000043a4200 c784246c01000070694200 c7842470010000cc9a4200 }
$sequence_8hex{ 0fb68170054200 33ea 0fa4dd10 33fa 99 8934cd28304800 }
$sequence_9hex{ 893ccd44404800 83c104 81f900010000 0f8c39f8ffff 5f 5e 5d }

Condition

7 of them and filesize < 1111040

In 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

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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

References

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)

Original rule

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

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE