YARA · Embee Research
EMBEERESEARCH_Win_Orcus_Rat_Simple_Strings_Dec_2023
Strings observed in Orcus RAT
- Author
- Matthew @ Embee_Research
- Date
- 2023-12-24
- Score / Quality
- 75 / 75
What this rule detects
Strings observed in Orcus RAT
It defines 8 patterns (8 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-orcus-rat-simple-strings-dec-2023.yarDetection Rule License 1.1
rule EMBEERESEARCH_Win_Orcus_Rat_Simple_Strings_Dec_2023
{
meta:
= "Strings observed in Orcus RAT"
= "Matthew @ Embee_Research"
= "baef6b96-bf94-5363-9186-9761a8055afd"
= "2023-12-24"
= "2023-12-24"
= "https://github.com/embee-research/Yara-detection-rules/"
= "https://github.com/embee-research/Yara-detection-rules//blob/ac56d6f6fd2a30c8cb6e5c0455d6519210a8b0f4/Rules/win_orcus_rat_simple_strings_dec_2023.yar#L1-L26"
= "N/A"
= "30a2a674d55d7898d304713dd2f69a043d875230ea7ebee22596ba4c640768db"
= "2e0a44ec2749e0fc646dfb003a2d32b3fecfa07ece72ca5a65116250d80496b8"
= 75
= 75
= ""
strings:
$s1 = "Orcus is a Remote Administration Tool for Windows. It allows the administrator to make changes to the system remotely." wide
$s2 = "Orcus.Service" wide
$s4 = "costura.orcus" wide
$s5 = "Orcus.Commands"
$s6 = "Orcus.Shared"
$s7 = "Orcus.Utilities"
$s8 = "Orcus.StaticCommands"
$s9 = "Orcus.Plugins"
condition:
(5 of them )
}
Strings (8 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s1 | text | "Orcus is a Remote Administration Tool for Windows. It allows the administrator to make changes to the system remotely." | wide |
| $s2 | text | "Orcus.Service" | wide |
| $s4 | text | "costura.orcus" | wide |
| $s5 | text | "Orcus.Commands" | |
| $s6 | text | "Orcus.Shared" | |
| $s7 | text | "Orcus.Utilities" | |
| $s8 | text | "Orcus.StaticCommands" | |
| $s9 | text | "Orcus.Plugins" |
Condition
(5 of them )In plain words (Heuristic)
- At least 5 patterns in the rule must match.
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Sample hashes
Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).
- 30a2a674d55d7898d304713dd2f69a043d875230ea7ebee22596ba4c640768db
Licence & attribution
Author: Matthew @ Embee_Research
Source repository: Embee Research @ ac56d6f6fd
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: baef6b96-bf94-5363-9186-9761a8055afd
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