YARA · Malpedia signator rules
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:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "bddfea2f-5980-50a2-824f-c8c992e61d4b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.gup_proxy"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.gup_proxy_auto.yar#L1-L121"
= "N/A"
= "a31779681620c829a24a1dd7ede13a209b88a3ec71308cbcd7be1ef7e190536a"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "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)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 660f6f05???????? f30f7f854cfaffff 660f6f05???????? f30f7f855cfaffff 660f6f05???????? } | |
| $sequence_1 | hex | { 8bc1 8b4df8 5e 33cd 5b e8???????? 8be5 } | |
| $sequence_2 | hex | { 8b4dfc f7d2 5f 5e 33cd 8bc2 5b } | |
| $sequence_3 | hex | { 8b5d08 8d85e0f5ffff 56 57 8bf1 8995dcf5ffff } | |
| $sequence_4 | hex | { eb83 890cb510974100 013d???????? 8b04b510974100 0500080000 3bc8 } | |
| $sequence_5 | hex | { 8bce e8???????? 6a04 8d8588feffff c78588feffffc22eab48 50 } | |
| $sequence_6 | hex | { c7461000000000 7204 8b06 eb02 8bc6 c60000 837e1410 } | |
| $sequence_7 | hex | { f30f7f45e8 6a50 8bf9 668945e8 } | |
| $sequence_8 | hex | { 88858afeffff 8bc3 c1e808 888589feffff 8d8588feffff } | |
| $sequence_9 | hex | { f30f7f853cffffff 660f6f05???????? f30f7f854cffffff 660f6f05???????? } |
Condition
7 of them and filesize < 247808In 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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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)
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
| 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 |
Tags:FILE
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