YARA · Malpedia signator rules
MALPEDIA_Win_Spygrace_Auto
autogenerated rule brought to you by yara-signator
MalwareSpygraceMalpedia 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: Spygrace.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-spygrace-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Spygrace_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "1c1fe014-1102-5578-bc7d-079a9011a6e2"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.spygrace"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.spygrace_auto.yar#L1-L130"
= "N/A"
= "6e55f9093d424c6d2765e46b0480ae56daf5fc27c377637de7ac7a628aa7f53f"
= 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 = { 488d8a30000000 e9???????? 488d8a90000000 e9???????? 488d8ae8000000 e9???????? 488d8aa8000000 }
$sequence_1 = { eb1e 488bc3 498784f640380600 4885c0 7409 488bcb ff15???????? }
$sequence_2 = { 7203 488b12 488bcb e8???????? 488d93c0020000 48396a18 7203 }
$sequence_3 = { c645df00 488b5517 4883fa10 722e 48ffc2 488b4dff 488bc1 }
$sequence_4 = { 488b55a0 483bd7 0f829e050000 48ffc2 488b4d88 }
$sequence_5 = { 44887c2468 488b542458 4883fa10 722e 48ffc2 488b4c2440 488bc1 }
$sequence_6 = { 48035708 0fb60a 83e10f 4c8d05e8b8fdff 4a0fbe8401d8510400 420fb68c01e8510400 482bd0 }
$sequence_7 = { 90 488d4dcf e8???????? 8bc3 488b4d0f 4833cc e8???????? }
$sequence_8 = { 488d542478 488d4d40 e8???????? 488b5590 483bd6 7232 }
$sequence_9 = { f30f7f4537 c6452700 488365c700 660f7f45d7 c645c700 488365e700 }
condition:
7 of them and filesize < 865280
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 488d8a30000000 e9???????? 488d8a90000000 e9???????? 488d8ae8000000 e9???????? 488d8aa8000000 } | |
| $sequence_1 | hex | { eb1e 488bc3 498784f640380600 4885c0 7409 488bcb ff15???????? } | |
| $sequence_2 | hex | { 7203 488b12 488bcb e8???????? 488d93c0020000 48396a18 7203 } | |
| $sequence_3 | hex | { c645df00 488b5517 4883fa10 722e 48ffc2 488b4dff 488bc1 } | |
| $sequence_4 | hex | { 488b55a0 483bd7 0f829e050000 48ffc2 488b4d88 } | |
| $sequence_5 | hex | { 44887c2468 488b542458 4883fa10 722e 48ffc2 488b4c2440 488bc1 } | |
| $sequence_6 | hex | { 48035708 0fb60a 83e10f 4c8d05e8b8fdff 4a0fbe8401d8510400 420fb68c01e8510400 482bd0 } | |
| $sequence_7 | hex | { 90 488d4dcf e8???????? 8bc3 488b4d0f 4833cc e8???????? } | |
| $sequence_8 | hex | { 488d542478 488d4d40 e8???????? 488b5590 483bd6 7232 } | |
| $sequence_9 | hex | { f30f7f4537 c6452700 488365c700 660f7f45d7 c645c700 488365e700 } |
Condition
7 of them and filesize < 865280In plain words (Heuristic)
- The file must be smaller than 865280 (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.
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: 1c1fe014-1102-5578-bc7d-079a9011a6e2
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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