YARA · Malpedia signator rules
MALPEDIA_Win_Funny_Dream_Auto
autogenerated rule brought to you by yara-signator
MalwareFunny DreamMalpedia 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: Funny Dream.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-funny-dream-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Funny_Dream_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "c095950e-5e09-5242-9d6f-90b3e1d697b6"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.funny_dream"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.funny_dream_auto.yar#L1-L125"
= "N/A"
= "993ea95e4e85b2130f6eebbb9c3dd0eae5b28bc29094cd689248b844bcefa621"
= 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 = { 6a00 ff7724 ff15???????? 8b4714 8b35???????? 85c0 }
$sequence_1 = { 0fb6c9 ba01000000 0f44ca 898df4f9ffff 8d85f8f9ffff c785f8f9ffff00000000 }
$sequence_2 = { ff15???????? 85c0 7513 68???????? ff15???????? 85c0 0f84a5000000 }
$sequence_3 = { ff15???????? 85c0 747e 8b9df8fdffff 8d4304 }
$sequence_4 = { ffb5b4feffff ffd7 5f 5e b001 5b 8b4dfc }
$sequence_5 = { 8bce 85c0 741e 83c009 50 57 e8???????? }
$sequence_6 = { 8bf2 50 0f1184242c010000 8d84242c010000 0f2805???????? 50 0f11842420010000 }
$sequence_7 = { ffb5a0fdffff ffd3 ffb594fdffff ff15???????? }
$sequence_8 = { 8db5d0fdffff 2410 8d4e01 88041f 47 6690 8a06 }
$sequence_9 = { 8d95f9f7ffff 668985f2f7ffff c785f4f7ffff00000001 8bce 2bd6 }
condition:
7 of them and filesize < 393216
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 6a00 ff7724 ff15???????? 8b4714 8b35???????? 85c0 } | |
| $sequence_1 | hex | { 0fb6c9 ba01000000 0f44ca 898df4f9ffff 8d85f8f9ffff c785f8f9ffff00000000 } | |
| $sequence_2 | hex | { ff15???????? 85c0 7513 68???????? ff15???????? 85c0 0f84a5000000 } | |
| $sequence_3 | hex | { ff15???????? 85c0 747e 8b9df8fdffff 8d4304 } | |
| $sequence_4 | hex | { ffb5b4feffff ffd7 5f 5e b001 5b 8b4dfc } | |
| $sequence_5 | hex | { 8bce 85c0 741e 83c009 50 57 e8???????? } | |
| $sequence_6 | hex | { 8bf2 50 0f1184242c010000 8d84242c010000 0f2805???????? 50 0f11842420010000 } | |
| $sequence_7 | hex | { ffb5a0fdffff ffd3 ffb594fdffff ff15???????? } | |
| $sequence_8 | hex | { 8db5d0fdffff 2410 8d4e01 88041f 47 6690 8a06 } | |
| $sequence_9 | hex | { 8d95f9f7ffff 668985f2f7ffff c785f4f7ffff00000001 8bce 2bd6 } |
Condition
7 of them and filesize < 393216In plain words (Heuristic)
- The file must be smaller than 393216 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: c095950e-5e09-5242-9d6f-90b3e1d697b6
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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