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MALPEDIA_Win_Lolsnif_Auto

autogenerated rule brought to you by yara-signator

MalwareLolsnifMalpedia 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: Lolsnif.

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

Summary generated from the rule's metadata and condition.

Rule source

win-lolsnif-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lolsnif_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "be46f072-cae9-5531-80d1-e1a20fbb98ec"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.lolsnif"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lolsnif_auto.yar#L1-L128"
		license_url = "N/A"
		logic_hash = "ed82ad20a3fc6cb342ecd93ac8cc890ed90601f15751e71833a782fc1792db1a"
		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 = { ff7508 53 53 6808010000 eb8b 3da3dc0816 0f8482000000 }
		$sequence_1 = { ff7508 53 53 680b010000 e9???????? a1???????? 83c808 }
		$sequence_2 = { e8???????? 3bc3 89442414 0f84b9000000 8d4c2410 51 }
		$sequence_3 = { ff7620 ff15???????? ff7620 ff15???????? 8b4610 85c0 53 }
		$sequence_4 = { c9 c21400 55 8bec 83e4f8 83ec28 56 }
		$sequence_5 = { 8be5 5d c21400 55 8bec 56 be???????? }
		$sequence_6 = { 8d47ef beee3f0000 3bc6 7710 8d4508 50 ff7510 }
		$sequence_7 = { e9???????? 33d2 42 52 53 8bc6 }
		$sequence_8 = { 57 53 33ff 57 6802001000 8bf0 }
		$sequence_9 = { 3bde 740d 53 ff15???????? }

	condition:
		7 of them and filesize < 425984
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ ff7508 53 53 6808010000 eb8b 3da3dc0816 0f8482000000 }
$sequence_1hex{ ff7508 53 53 680b010000 e9???????? a1???????? 83c808 }
$sequence_2hex{ e8???????? 3bc3 89442414 0f84b9000000 8d4c2410 51 }
$sequence_3hex{ ff7620 ff15???????? ff7620 ff15???????? 8b4610 85c0 53 }
$sequence_4hex{ c9 c21400 55 8bec 83e4f8 83ec28 56 }
$sequence_5hex{ 8be5 5d c21400 55 8bec 56 be???????? }
$sequence_6hex{ 8d47ef beee3f0000 3bc6 7710 8d4508 50 ff7510 }
$sequence_7hex{ e9???????? 33d2 42 52 53 8bc6 }
$sequence_8hex{ 57 53 33ff 57 6802001000 8bf0 }
$sequence_9hex{ 3bde 740d 53 ff15???????? }

Condition

7 of them and filesize < 425984

In plain words (Heuristic)

  • The file must be smaller than 425984 (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.

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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: be46f072-cae9-5531-80d1-e1a20fbb98ec

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