Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Ice_Cache_Auto

autogenerated rule brought to you by yara-signator

MalwareIce CacheMalpedia 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: Ice Cache.

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

Summary generated from the rule's metadata and condition.

Rule source

win-ice-cache-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ice_Cache_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c8cd297c-ec1f-5fc6-b8b2-e35339b31f52"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ice_cache"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ice_cache_auto.yar#L1-L128"
		license_url = "N/A"
		logic_hash = "559e40e472e46ff9d60659226f58c40932b63678bb97da17fd2e5e3c180662d8"
		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 = { 84c0 0f844e010000 48897b10 48837b1810 7205 488b03 eb03 }
		$sequence_1 = { 4883ec28 488d0d5db40400 ff15???????? 488d0df0b50400 ff15???????? 488d0d8bb40400 ff15???????? }
		$sequence_2 = { 754f 498b4010 80781900 7525 488bd8 488b00 80781900 }
		$sequence_3 = { 48894d68 48c7457007000000 66894d58 4883cbff 488b4588 48394810 }
		$sequence_4 = { e8???????? 4c8d0db1830100 b915000000 4c8d059d830100 }
		$sequence_5 = { 4c8bc7 488d55f7 488d4d97 e8???????? 488b7df7 8b45e7 }
		$sequence_6 = { 4d897c2410 49c744241807000000 6645893c24 eb03 4533ff 4c8b45d8 4983f808 }
		$sequence_7 = { e8???????? 4885db 7528 488d0d5c450400 e8???????? 488b1d???????? }
		$sequence_8 = { 7458 837c245000 7651 4c89742420 4c8d4c2454 41b800100000 488d9580000000 }
		$sequence_9 = { 90 488bd0 488d8c24180a0000 e8???????? 90 41b101 4c8bc3 }

	condition:
		7 of them and filesize < 801792
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 84c0 0f844e010000 48897b10 48837b1810 7205 488b03 eb03 }
$sequence_1hex{ 4883ec28 488d0d5db40400 ff15???????? 488d0df0b50400 ff15???????? 488d0d8bb40400 ff15???????? }
$sequence_2hex{ 754f 498b4010 80781900 7525 488bd8 488b00 80781900 }
$sequence_3hex{ 48894d68 48c7457007000000 66894d58 4883cbff 488b4588 48394810 }
$sequence_4hex{ e8???????? 4c8d0db1830100 b915000000 4c8d059d830100 }
$sequence_5hex{ 4c8bc7 488d55f7 488d4d97 e8???????? 488b7df7 8b45e7 }
$sequence_6hex{ 4d897c2410 49c744241807000000 6645893c24 eb03 4533ff 4c8b45d8 4983f808 }
$sequence_7hex{ e8???????? 4885db 7528 488d0d5c450400 e8???????? 488b1d???????? }
$sequence_8hex{ 7458 837c245000 7651 4c89742420 4c8d4c2454 41b800100000 488d9580000000 }
$sequence_9hex{ 90 488bd0 488d8c24180a0000 e8???????? 90 41b101 4c8bc3 }

Condition

7 of them and filesize < 801792

In plain words (Heuristic)

  • The file must be smaller than 801792 (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.

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: c8cd297c-ec1f-5fc6-b8b2-e35339b31f52

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