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MALPEDIA_Win_Gup_Proxy_Auto

autogenerated rule brought to you by yara-signator

MalwareGup ProxyMalpedia 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: Gup Proxy.

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

Summary generated from the rule's metadata and condition.

Rule source

win-gup-proxy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Gup_Proxy_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "bddfea2f-5980-50a2-824f-c8c992e61d4b"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.gup_proxy"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.gup_proxy_auto.yar#L1-L121"
		license_url = "N/A"
		logic_hash = "a31779681620c829a24a1dd7ede13a209b88a3ec71308cbcd7be1ef7e190536a"
		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 = { 660f6f05???????? f30f7f854cfaffff 660f6f05???????? f30f7f855cfaffff 660f6f05???????? }
		$sequence_1 = { 8bc1 8b4df8 5e 33cd 5b e8???????? 8be5 }
		$sequence_2 = { 8b4dfc f7d2 5f 5e 33cd 8bc2 5b }
		$sequence_3 = { 8b5d08 8d85e0f5ffff 56 57 8bf1 8995dcf5ffff }
		$sequence_4 = { eb83 890cb510974100 013d???????? 8b04b510974100 0500080000 3bc8 }
		$sequence_5 = { 8bce e8???????? 6a04 8d8588feffff c78588feffffc22eab48 50 }
		$sequence_6 = { c7461000000000 7204 8b06 eb02 8bc6 c60000 837e1410 }
		$sequence_7 = { f30f7f45e8 6a50 8bf9 668945e8 }
		$sequence_8 = { 88858afeffff 8bc3 c1e808 888589feffff 8d8588feffff }
		$sequence_9 = { f30f7f853cffffff 660f6f05???????? f30f7f854cffffff 660f6f05???????? }

	condition:
		7 of them and filesize < 247808
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 660f6f05???????? f30f7f854cfaffff 660f6f05???????? f30f7f855cfaffff 660f6f05???????? }
$sequence_1hex{ 8bc1 8b4df8 5e 33cd 5b e8???????? 8be5 }
$sequence_2hex{ 8b4dfc f7d2 5f 5e 33cd 8bc2 5b }
$sequence_3hex{ 8b5d08 8d85e0f5ffff 56 57 8bf1 8995dcf5ffff }
$sequence_4hex{ eb83 890cb510974100 013d???????? 8b04b510974100 0500080000 3bc8 }
$sequence_5hex{ 8bce e8???????? 6a04 8d8588feffff c78588feffffc22eab48 50 }
$sequence_6hex{ c7461000000000 7204 8b06 eb02 8bc6 c60000 837e1410 }
$sequence_7hex{ f30f7f45e8 6a50 8bf9 668945e8 }
$sequence_8hex{ 88858afeffff 8bc3 c1e808 888589feffff 8d8588feffff }
$sequence_9hex{ f30f7f853cffffff 660f6f05???????? f30f7f854cffffff 660f6f05???????? }

Condition

7 of them and filesize < 247808

In plain words (Heuristic)

  • The file must be smaller than 247808 (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: bddfea2f-5980-50a2-824f-c8c992e61d4b

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