YARA · SEKOIA.IO Community
SEKOIA_Ransomware_Win_Raworld
Detects files related to stage 1 of a campaign from the ransomware group RA World.
- Author
- Sekoia.io
- Date
- 2024-07-24
- Modified
- 2024-12-19
- Score / Quality
- 75 / 80
What this rule detects
Detects files related to stage 1 of a campaign from the ransomware group RA World.
It defines 9 patterns (9 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
ransomware-win-raworld.yarDetection Rule License 1.1
rule SEKOIA_Ransomware_Win_Raworld
{
meta:
= "Detects files related to stage 1 of a campaign from the ransomware group RA World."
= "Sekoia.io"
= "a9ed9c5a-7a0e-4c2e-90f4-d52f5589b2b8"
= "2024-07-24"
= "2024-12-19"
= "https://github.com/SEKOIA-IO/Community"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/ransomware_win_raworld.yar#L1-L23"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
= "583dd2ea8e20a87d0b67783d1dd59212eb133de1f945d5b4afad89e8a5017d35"
= 75
= 80
= ""
= "1.0"
= "TLP:CLEAR"
strings:
$s1 = "Loder.exe" ascii fullword
$s2 = "Stage2.exe" wide
$s3 = "SYSVOL" wide
$s4 = "Finish.exe" wide
$s5 = "Exclude.exe" wide
$s6 = "Stage3.exe" wide
$s7 = "Pay.txt" ascii fullword
$s8 = "RA World" ascii fullword
$s9 = "Stage1.exe" ascii fullword
condition:
4 of them
}
Strings (9 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s1 | text | "Loder.exe" | ascii fullword |
| $s2 | text | "Stage2.exe" | wide |
| $s3 | text | "SYSVOL" | wide |
| $s4 | text | "Finish.exe" | wide |
| $s5 | text | "Exclude.exe" | wide |
| $s6 | text | "Stage3.exe" | wide |
| $s7 | text | "Pay.txt" | ascii fullword |
| $s8 | text | "RA World" | ascii fullword |
| $s9 | text | "Stage1.exe" | ascii fullword |
Condition
4 of themIn plain words (Heuristic)
- At least 4 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: a9ed9c5a-7a0e-4c2e-90f4-d52f5589b2b8
Metadata
| version | 1.0 |
|---|---|
| classification | TLP:CLEAR |
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