YARA · Embee Research
EMBEERESEARCH_Win_Remcos_Rat_Unpacked
Detects strings present in remcos rat Samples.
- Author
- Matthew @ Embee_Research
- Date
- 2023-08-27
- Modified
- 2023-10-18
- Score / Quality
- 75 / 75
What this rule detects
Detects strings present in remcos rat Samples.
Associated malware family: Remcos.
It defines 9 patterns (9 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule EMBEERESEARCH_Win_Remcos_Rat_Unpacked : FILE
{
meta:
= "Detects strings present in remcos rat Samples."
= "Matthew @ Embee_Research"
= "d4282638-592a-5c07-b07b-937e2a7879e4"
= "2023-08-27"
= "2023-10-18"
= "https://github.com/embee-research/Yara-detection-rules/"
= "https://github.com/embee-research/Yara-detection-rules//blob/ac56d6f6fd2a30c8cb6e5c0455d6519210a8b0f4/Rules/win_remcos_rat_unpacked_aug_2023.yar#L2-L32"
= "N/A"
= "ec901217558e77f2f449031a6a1190b1e99b30fa1bb8d8dabc3a99bc69833784"
= "c6d1772a5517b104de3022f4bab55d92784d35c3a252a4e0516083d8bd28cad0"
= 75
= 75
= "FILE"
strings:
$r0 = " ______ " ascii
$r1 = "(_____ \\ " ascii
$r2 = " _____) )_____ ____ ____ ___ ___ " ascii
$r3 = "| __ /| ___ | \\ / ___) _ \\ /___)" ascii
$r4 = "| | \\ \\| ____| | | ( (__| |_| |___ |" ascii
$r5 = "|_| |_|_____)_|_|_|\\____)___/(___/ " ascii
$s1 = "Watchdog module activated" ascii
$s2 = "Remcos restarted by watchdog!" ascii
$s3 = " BreakingSecurity.net" ascii
condition:
(( all of ( $r* ) ) or ( all of ( $s* ) ) )
}
Strings (9 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $r0 | text | " ______ " | ascii |
| $r1 | text | "(_____ \\ " | ascii |
| $r2 | text | " _____) )_____ ____ ____ ___ ___ " | ascii |
| $r3 | text | "| __ /| ___ | \\ / ___) _ \\ /___)" | ascii |
| $r4 | text | "| | \\ \\| ____| | | ( (__| |_| |___ |" | ascii |
| $r5 | text | "|_| |_|_____)_|_|_|\\____)___/(___/ " | ascii |
| $s1 | text | "Watchdog module activated" | ascii |
| $s2 | text | "Remcos restarted by watchdog!" | ascii |
| $s3 | text | " BreakingSecurity.net" | ascii |
Condition
(( all of ( $r* ) ) or ( all of ( $s* ) ) )In plain words (Heuristic)
- All patterns in ( $r* ) must match.
- All patterns in ( $s* ) 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.
Sample hashes
Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).
- ec901217558e77f2f449031a6a1190b1e99b30fa1bb8d8dabc3a99bc69833784
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: d4282638-592a-5c07-b07b-937e2a7879e4
Tags:FILE
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