YARA · SEKOIA.IO Community
SEKOIA_Downloader_Win_Donot
Detect the DoNot's downloader malware. There are big binaries in downloader strings.
- Author
- Sekoia.io
- Date
- 2023-03-20
- Modified
- 2024-12-19
- Score / Quality
- 75 / 80
What this rule detects
Detect the DoNot's downloader malware. There are big binaries in downloader strings.
Associated malware family: Donot.
It defines 3 patterns (3 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
downloader-win-donot.yarDetection Rule License 1.1
rule SEKOIA_Downloader_Win_Donot
{
meta:
= "Detect the DoNot's downloader malware. There are big binaries in downloader strings."
= "Sekoia.io"
= "31b153cc-a4b9-40a0-8bcb-ce1370645b4b"
= "2023-03-20"
= "2024-12-19"
= "https://github.com/SEKOIA-IO/Community"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/downloader_win_donot.yar#L1-L19"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
= "f6a03e6cfda74c1fbb1e8939a66735498d604a821b8b51492c2c5c6a46a38b6e"
= 75
= 80
= ""
= "1.0"
= "TLP:CLEAR"
strings:
$ = "001100000011000100110001001100000011000000110000001100010011000100110000001100010011000100110000001100010011000100110000001100010011"
$ = "01010011011011110110011001110100011101110110000101110010011001010101110001001101011010010110001101110010011011110111001101101111011001100111010001011100010101110110100101101110011001000110111101110111011100110101110001000011011101010111001001110010011001010110111001110100010101100110010101110010011100110110100101101111011011100101110001010101011011100110100101101110011100110111010001100001011011000110110000000000"
$ = "0101110001110011011110010111001101110100011001010110110100110011001100100101110001110010011101010110111001100100011011000110110000110011001100100010111001100101011110000110010100000000"
condition:
1 of them
}
Strings (3 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $ | text | "001100000011000100110001001100000011000000110000001100010011000100110000001100010011000100110000001100010011000100110000001100010011" | |
| $ | text | "010100110110111101100110011101000111011101100001011100100110010101011100010011010110100101100011011100100110111101110011011011110110011001110100010111000101011 … | |
| $ | text | "010111000111001101111001011100110111010001100101011011010011001100110010010111000111001001110101011011100110010001101100011011000011001100110010001011100110010 … |
Condition
1 of themIn plain words (Heuristic)
- At least 1 patterns in the rule must match.
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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: 31b153cc-a4b9-40a0-8bcb-ce1370645b4b
Metadata
| version | 1.0 |
|---|---|
| classification | TLP:CLEAR |
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