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Detect_Mimic_Ransomware

YARA-2023-0001 Critical general Active

Detect_Mimic_Ransomware

Detect_Mimic_Ransomware.yar Valid Syntax 

rule Detect_Mimic_Ransomware: Mimic Ransomware   
{
     meta:
        description = "Detect_Mimic_Ransomware"
        author = "@MalGamy12"
        date = "2023-01-27"
        license = "DRL 1.1"
        hash = "08f8ae7f25949a742c7896cb76e37fb88c6a7a32398693ec6c2b3d9b488114be"
        hash = "136d05b5132adafc4c7616cd6902700de59f3f326c6931eb6b2f3b1f458c7457"
        hash = "1dea642abe3e27fd91c3db4e0293fb1f7510e14aed73e4ea36bf7299fd8e6506"
        hash = "2e96b55980a827011a7e0784ab95dcee53958a1bb19f5397080a434041bbeeea"
        hash = "30f2fe10229863c57d9aab97ec8b7a157ad3ff9ab0b2110bbb4859694b56923f"
        hash = "480fb2f6bcb1f394dc171ecbce88b9fa64df1491ec65859ee108f2e787b26e03"
        hash = "4a6f8bf2b989fa60daa6c720b2d388651dd8e4c60d0be04aaed4de0c3c064c8f"
        hash = "7ae4c5caf6cda7fa8862f64a74bd7f821b50d855d6403bde7bcbd7398b2c7d99"
        hash = "9c16211296f88e12538792124b62eb00830d0961e9ab24b825edb61bda8f564f"
        hash = "a1eeeeae0eb365ff9a00717846c4806785d55ed20f3f5cbf71cf6710d7913c51"
        hash = "b0c75e92e1fe98715f90b29475de998d0c8c50ca80ce1c141fc09d10a7b8e7ee"
        hash = "b68f469ed8d9deea15af325efc1a56ca8cb5c2b42f2423837a51160456ce0db5"
        hash = "bb28adc32ff1b9dcfaac6b7017b4896d2807b48080f9e6720afde3f89d69676c"
        hash = "bf6fa9b06115a8a4ff3982427ddc12215bd1a3d759ac84895b5fb66eaa568bff"
        hash = "c576f7f55c4c0304b290b15e70a638b037df15c69577cd6263329c73416e490e"
        hash = "c634378691a675acbf57e611b220e676eb19aa190f617c41a56f43ac48ae14c7"
        hash = "c71ce482cf50d59c92cfb1eae560711d47600541b2835182d6e46e0de302ca6c"
        hash = "e67d3682910cf1e7ece356860179ada8e847637a86c1e5f6898c48c956f04590"
        hash = "ed6cf30ee11b169a65c2a27c4178c5a07ff3515daa339033bf83041faa6f49c1"    

    strings:
        $s1 = "Reading tail" wide  
        $s2 = "GetWhiteList" wide
        $s3 = "KillServ" wide
        $s4 = "Kill Serv2" wide
        $s5 = "Kill proc" wide
        $s6 = "AntiKill" wide
        $s7 = "Protect..." wide
        $s8 = "AntiShutdown..." wide
        $s9 = "Found share" wide
        $s10 = "Enum shares on" wide
        $s11 = "Starting search on share" wide
        $s12 = "AddHost" wide
        $s13 = "CreateHostTable..." wide
        $s14 = "Network stack is outdated." wide
        $s15 = "Current IP" wide
   
    condition:
        uint16(0) == 0x5A4D and (10 of them)
}

Rule Metadata

description
Detect_Mimic_Ransomware
author
@MalGamy12
date
2023-01-27
license
DRL 1.1
hash
ed6cf30ee11b169a65c2a27c4178c5a07ff3515daa339033bf83041faa6f49c1

Tags

Mimic Ransomware

String Definitions

{"name":"$s1","value":"\"Reading tail\" wide"}
{"name":"$s2","value":"\"GetWhiteList\" wide"}
{"name":"$s3","value":"\"KillServ\" wide"}
{"name":"$s4","value":"\"Kill Serv2\" wide"}
{"name":"$s5","value":"\"Kill proc\" wide"}
{"name":"$s6","value":"\"AntiKill\" wide"}
{"name":"$s7","value":"\"Protect...\" wide"}
{"name":"$s8","value":"\"AntiShutdown...\" wide"}
{"name":"$s9","value":"\"Found share\" wide"}
{"name":"$s10","value":"\"Enum shares on\" wide"}
{"name":"$s11","value":"\"Starting search on share\" wide"}
{"name":"$s12","value":"\"AddHost\" wide"}
{"name":"$s13","value":"\"CreateHostTable...\" wide"}
{"name":"$s14","value":"\"Network stack is outdated.\" wide"}
{"name":"$s15","value":"\"Current IP\" wide"}

Threat Analysis

This YARA rule is designed to detect general threats.

Severity Level: Critical

The rule uses pattern matching to identify specific byte sequences, strings, or behavioral patterns associated with malicious activity.

Detection Capabilities

  • File-based detection for executables and documents
  • Memory scanning for running processes
  • Network traffic analysis support

Command Line Usage

# Scan a single file
yara Detect_Mimic_Ransomware.yar /path/to/suspicious/file

# Scan a directory recursively
yara -r Detect_Mimic_Ransomware.yar /path/to/directory/

# Scan with metadata output
yara -m Detect_Mimic_Ransomware.yar target_file

# Scan process memory (Linux)
yara Detect_Mimic_Ransomware.yar /proc/[pid]/exe

Integration Examples

Python (yara-python)

import yara
rules = yara.compile(filepath='Detect_Mimic_Ransomware.yar')
matches = rules.match('/path/to/file')

ClamAV Integration

clamscan --yara-rules=Detect_Mimic_Ransomware.yar /path/to/scan

Rule Information

YARA ID
YARA-2023-0001
Created
August 19, 2025
Last Updated
August 19, 2025
Last Imported
Never

Threat Intelligence

Risk Level Critical
Category general
Detection Confidence Analysis Pending
False Positive Rate Not Available
Last Seen in Wild No Data

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Export Options

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