YARA · Malpedia signator rules
MALPEDIA_Win_Iispy_Auto
autogenerated rule brought to you by yara-signator
- 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: Iispy.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-iispy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Iispy_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "deb63250-fcc0-5cfe-be30-ff47ced8d3d1"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.iispy"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.iispy_auto.yar#L1-L129"
= "N/A"
= "a71e9708e64937fd85e928d51eb078aab35675e0d1194499d40fdb1e597ac38a"
= 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 = { 85c0 7514 8b75c0 8bd6 8b4dbc }
$sequence_1 = { 8a044dc1820210 8806 8d4601 5f 5e 5b 8be5 }
$sequence_2 = { 8b17 8bd8 6a20 8bcf 895dc4 ff5248 }
$sequence_3 = { 85c0 742b 8bf0 3b4708 7414 8b7008 50 }
$sequence_4 = { 8b4c2410 8d044502000000 50 ff5248 33d2 8944243c }
$sequence_5 = { 89480c 84db 7466 c6025c 8b16 8b4a0c }
$sequence_6 = { 03c2 c1c005 03c6 8901 8bc1 8b4808 8bd1 }
$sequence_7 = { 8b0f 85c9 0f843b040000 85c0 750a b808000780 e9???????? }
$sequence_8 = { 8a65f7 32c6 32c4 894dc8 3245f9 8aee 3245fb }
$sequence_9 = { 0fb7ff 81cf00000780 e9???????? 8d45c4 50 6a00 6a04 }
condition:
7 of them and filesize < 397312
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 85c0 7514 8b75c0 8bd6 8b4dbc } | |
| $sequence_1 | hex | { 8a044dc1820210 8806 8d4601 5f 5e 5b 8be5 } | |
| $sequence_2 | hex | { 8b17 8bd8 6a20 8bcf 895dc4 ff5248 } | |
| $sequence_3 | hex | { 85c0 742b 8bf0 3b4708 7414 8b7008 50 } | |
| $sequence_4 | hex | { 8b4c2410 8d044502000000 50 ff5248 33d2 8944243c } | |
| $sequence_5 | hex | { 89480c 84db 7466 c6025c 8b16 8b4a0c } | |
| $sequence_6 | hex | { 03c2 c1c005 03c6 8901 8bc1 8b4808 8bd1 } | |
| $sequence_7 | hex | { 8b0f 85c9 0f843b040000 85c0 750a b808000780 e9???????? } | |
| $sequence_8 | hex | { 8a65f7 32c6 32c4 894dc8 3245f9 8aee 3245fb } | |
| $sequence_9 | hex | { 0fb7ff 81cf00000780 e9???????? 8d45c4 50 6a00 6a04 } |
Condition
7 of them and filesize < 397312In plain words (Heuristic)
- The file must be smaller than 397312 (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: deb63250-fcc0-5cfe-be30-ff47ced8d3d1
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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