YARA · SEKOIA.IO Community
SEKOIA_Apt_Sandworm_Awfulshred_Obfuscation_Apr2022
Detects the AWFULSHRED wiper used by Sandworm
- Author
- Sekoia.io
- Date
- 2022-04-12
- Modified
- 2024-12-19
- Score / Quality
- 75 / 80
What this rule detects
Detects the AWFULSHRED wiper used by Sandworm
It defines 2 patterns (1 text, 1 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
apt-sandworm-awfulshred-obfuscation-apr2022.yarDetection Rule License 1.1
rule SEKOIA_Apt_Sandworm_Awfulshred_Obfuscation_Apr2022 : FILE
{
meta:
= "Detects the AWFULSHRED wiper used by Sandworm"
= "Sekoia.io"
= "52317e6b-7f2c-4c2a-bcfc-ebb4ab4c728e"
= "2022-04-12"
= "2024-12-19"
= "https://github.com/SEKOIA-IO/Community"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_sandworm_awfulshred_obfuscation_apr2022.yar#L1-L16"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
= "3e1eed3a4b638893828289f928a75b855bc9e1e29444ffa81c0461fdc1277cad"
= 75
= 80
= "FILE"
= "1.0"
= "TLP:CLEAR"
strings:
$h = "#!/bin/bash"
$s = { 64 65 63 6c 61 72 65 20 2d 72 20 [8] 3d }
condition:
$h at 0 and #s > 15
}
Strings (2 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $h | text | "#!/bin/bash" | |
| $s | hex | { 64 65 63 6c 61 72 65 20 2d 72 20 [8] 3d } |
Condition
$h at 0 and #s > 15In plain words (Heuristic)
- Pattern $s must occur > 15 times.
- Pattern $h must be found at offset 0.
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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: 52317e6b-7f2c-4c2a-bcfc-ebb4ab4c728e
Metadata
| version | 1.0 |
|---|---|
| classification | TLP:CLEAR |
Tags:FILE
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