YARA · SEKOIA.IO Community
SEKOIA_Apt_Apt29_Malicious_Rdp_File
Detects malicious RDP files
- Author
- Sekoia.io
- Date
- 2024-10-25
- Modified
- 2024-12-19
- Score / Quality
- 75 / 80
What this rule detects
Detects malicious RDP files
It defines 7 patterns (7 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
apt-apt29-malicious-rdp-file.yarDetection Rule License 1.1
rule SEKOIA_Apt_Apt29_Malicious_Rdp_File : FILE
{
meta:
= "Detects malicious RDP files"
= "Sekoia.io"
= "a7b092b5-53a1-4638-a6c1-733d3f063139"
= "2024-10-25"
= "2024-12-19"
= "https://github.com/SEKOIA-IO/Community"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_apt29_malicious_rdp_file.yar#L1-L26"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
= "db326d934e386059cc56c4e61695128e"
= "b38e7e8bba44bc5619b2689024ad9fca"
= "f58cf55b944f5942f1d120d95140b800"
= "40f957b756096fa6b80f95334ba92034"
= "da9d8dfbbf82f48c8b880cbde21f75ecd1e9f779e462da5ced32b6587c71eaf2"
= 75
= 80
= "FILE"
= "1.0"
= "TLP:CLEAR"
strings:
$ = "RedirectPrinters" wide
$ = "RedirectCOMPorts" wide
$ = "RedirectSmartCards" wide
$ = "RedirectPOSDevices" wide
$ = "RedirectClipboard" wide
$ = "DrivesToRedirect" wide
$ = "full address:s:" wide
condition:
uint16be( 0 ) == 0xFFFE and all of them and filesize < 20KB
}
Strings (7 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $ | text | "RedirectPrinters" | wide |
| $ | text | "RedirectCOMPorts" | wide |
| $ | text | "RedirectSmartCards" | wide |
| $ | text | "RedirectPOSDevices" | wide |
| $ | text | "RedirectClipboard" | wide |
| $ | text | "DrivesToRedirect" | wide |
| $ | text | "full address:s:" | wide |
Condition
uint16be( 0 ) == 0xFFFE and all of them and filesize < 20KBIn plain words (Heuristic)
- The file must be smaller than 20KB (a cheap guard that skips large files).
- All patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
References
Sample hashes
Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).
- db326d934e386059cc56c4e61695128e
- b38e7e8bba44bc5619b2689024ad9fca
- f58cf55b944f5942f1d120d95140b800
- 40f957b756096fa6b80f95334ba92034
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: a7b092b5-53a1-4638-a6c1-733d3f063139
Metadata
| version | 1.0 |
|---|---|
| classification | TLP:CLEAR |
Tags:FILE
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