YARA · SEKOIA.IO Community
SEKOIA_Loader_Win_Bumblebee
Detect BUMBLEBEE based on specific strings
- Author
- Sekoia.io
- Date
- 2022-04-08
- Modified
- 2024-12-19
- Score / Quality
- 75 / 80
What this rule detects
Detect BUMBLEBEE based on specific strings
Associated malware family: BumbleBee.
Targets: Windows PE.
It defines 3 patterns (3 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
loader-win-bumblebee.yarDetection Rule License 1.1
rule SEKOIA_Loader_Win_Bumblebee : FILE
{
meta:
= "Detect BUMBLEBEE based on specific strings"
= "Sekoia.io"
= "ff36f512-c700-4f52-bc89-68ab9c69462c"
= "2022-04-08"
= "2024-12-19"
= "https://github.com/SEKOIA-IO/Community"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/loader_win_bumblebee.yar#L1-L17"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
= "97755e8d593acbc9acc8ce7f1a82a345fc7eea049addbb96577f6abc1b6d5fd6"
= 75
= 80
= "FILE"
= "1.0"
= "TLP:CLEAR"
strings:
$str0 = "Z:\\hooker2\\Common\\md5.cpp" wide
$str1 = "3C29FEA2-6FE8-4BF9-B98A-0E3442115F67" wide
$str2 = "bumblebee" ascii
condition:
uint16( 0 ) == 0x5A4D and 2 of them
}
Strings (3 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $str0 | text | "Z:\\hooker2\\Common\\md5.cpp" | wide |
| $str1 | text | "3C29FEA2-6FE8-4BF9-B98A-0E3442115F67" | wide |
| $str2 | text | "bumblebee" | ascii |
Condition
uint16( 0 ) == 0x5A4D and 2 of themIn plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- At least 2 patterns in the rule must match.
Test this rule in your browser
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References
Licence & attribution
Author: Sekoia.io
Source repository: SEKOIA.IO Community @ a438a5901a
Licence: Detection Rule License 1.1 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: ff36f512-c700-4f52-bc89-68ab9c69462c
Metadata
| version | 1.0 |
|---|---|
| classification | TLP:CLEAR |
Tags:FILE
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