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MALPEDIA_Win_Webc2_Div_Auto

autogenerated rule brought to you by yara-signator

MalwareWebc2 DivMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-01-05
Modified
2026-01-06
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Webc2 Div.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-webc2-div-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Webc2_Div_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "0487cd24-3efb-59f7-a789-643d02cfd1b0"
		date = "2026-01-05"
		modified = "2026-01-06"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.webc2_div"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.webc2_div_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "fd0dce640f74e7a720d2663bbcad05a022471937161b3c94d0276bbf1eb69f1b"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260105"
		malpedia_hash = "19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79"
		malpedia_version = "20251219"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 7474 56 6800000080 56 56 }
		$sequence_1 = { 8078056e 7512 80780663 750c 80780765 7506 }
		$sequence_2 = { 8d7d02 83c9ff c70001000000 8d5008 33c0 f2ae f7d1 }
		$sequence_3 = { c3 55 e8???????? 59 33c0 ebf0 81ec10020000 }
		$sequence_4 = { 7573 80780661 756d 80780766 }
		$sequence_5 = { 7f09 0fbed0 83ea17 89148e 8d6901 bf16000000 8bc5 }
		$sequence_6 = { 6a20 53 ffd6 59 85c0 }
		$sequence_7 = { ff742410 eb14 817c2410808d5b00 771a 8b442414 }
		$sequence_8 = { 83e803 bf???????? 80240100 83c9ff 33c0 f2ae f7d1 }
		$sequence_9 = { 8b048e 8d1c9510114000 8b17 2bc2 99 }

	condition:
		7 of them and filesize < 32768
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 7474 56 6800000080 56 56 }
$sequence_1hex{ 8078056e 7512 80780663 750c 80780765 7506 }
$sequence_2hex{ 8d7d02 83c9ff c70001000000 8d5008 33c0 f2ae f7d1 }
$sequence_3hex{ c3 55 e8???????? 59 33c0 ebf0 81ec10020000 }
$sequence_4hex{ 7573 80780661 756d 80780766 }
$sequence_5hex{ 7f09 0fbed0 83ea17 89148e 8d6901 bf16000000 8bc5 }
$sequence_6hex{ 6a20 53 ffd6 59 85c0 }
$sequence_7hex{ ff742410 eb14 817c2410808d5b00 771a 8b442414 }
$sequence_8hex{ 83e803 bf???????? 80240100 83c9ff 33c0 f2ae f7d1 }
$sequence_9hex{ 8b048e 8d1c9510114000 8b17 2bc2 99 }

Condition

7 of them and filesize < 32768

In plain words (Heuristic)

  • The file must be smaller than 32768 (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: 0487cd24-3efb-59f7-a789-643d02cfd1b0

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260105
malpedia_hash19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79
malpedia_version20251219
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE