YARA · Malpedia signator rules
MALPEDIA_Win_Sendsafe_Auto
autogenerated rule brought to you by yara-signator
MalwareSendsafeMalpedia 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: Sendsafe.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-sendsafe-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Sendsafe_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "22ecadd0-d25d-581d-9d09-ca00bea39407"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.sendsafe"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sendsafe_auto.yar#L1-L134"
= "N/A"
= "ff3c7f30f228fce4b7d080e3cae62a8acf0fb6447b41041ce3863f984ead4db4"
= 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 = { 8d8dfcfdffff 51 e8???????? 83c40c 8d95fcfdffff 52 e8???????? }
$sequence_1 = { ff15???????? 85c0 7409 c745cc01000000 eb07 c745cc00000000 8a4dcc }
$sequence_2 = { eb5c 8b55cc 8b4230 8b4dc8 8b1488 837a2c00 744a }
$sequence_3 = { eb1a b816020000 25ffff0000 0d00000700 0d00000080 898578f6ffff 8b8d78f6ffff }
$sequence_4 = { eb0f 8b4df4 51 e8???????? 83c404 8945e8 8b55e8 }
$sequence_5 = { 8b8894000000 51 8d55dc 52 e8???????? 83c408 8d45dc }
$sequence_6 = { e8???????? 8b45e8 898574ffffff 8b4d10 8b9574ffffff 8b01 3b4210 }
$sequence_7 = { c741144d000000 8b5508 8b02 b904000000 6bd100 8b4dfc 894c1018 }
$sequence_8 = { 83c40c 8d95fcfeffff 52 8b85f4faffff 50 8b8df8faffff e8???????? }
$sequence_9 = { 8b8df0feffff 668901 e9???????? 8b95dcfeffff 83ea01 8995dcfeffff 8b4508 }
condition:
7 of them and filesize < 3743744
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8d8dfcfdffff 51 e8???????? 83c40c 8d95fcfdffff 52 e8???????? } | |
| $sequence_1 | hex | { ff15???????? 85c0 7409 c745cc01000000 eb07 c745cc00000000 8a4dcc } | |
| $sequence_2 | hex | { eb5c 8b55cc 8b4230 8b4dc8 8b1488 837a2c00 744a } | |
| $sequence_3 | hex | { eb1a b816020000 25ffff0000 0d00000700 0d00000080 898578f6ffff 8b8d78f6ffff } | |
| $sequence_4 | hex | { eb0f 8b4df4 51 e8???????? 83c404 8945e8 8b55e8 } | |
| $sequence_5 | hex | { 8b8894000000 51 8d55dc 52 e8???????? 83c408 8d45dc } | |
| $sequence_6 | hex | { e8???????? 8b45e8 898574ffffff 8b4d10 8b9574ffffff 8b01 3b4210 } | |
| $sequence_7 | hex | { c741144d000000 8b5508 8b02 b904000000 6bd100 8b4dfc 894c1018 } | |
| $sequence_8 | hex | { 83c40c 8d95fcfeffff 52 8b85f4faffff 50 8b8df8faffff e8???????? } | |
| $sequence_9 | hex | { 8b8df0feffff 668901 e9???????? 8b95dcfeffff 83ea01 8995dcfeffff 8b4508 } |
Condition
7 of them and filesize < 3743744In plain words (Heuristic)
- The file must be smaller than 3743744 (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: 22ecadd0-d25d-581d-9d09-ca00bea39407
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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