2 Temmuz 2015 Perşembe

Linux/Moose YARA Rule

private rule is_elf
{
    strings:
        $header = { 7F 45 4C 46 }

    condition:
        $header at 0
}

rule moose
{
    meta:
        Author      = "Thomas Dupuy"
        Date        = "2015/04/21"
        Description = "Linux/Moose malware"
        Reference   = "http://www.welivesecurity.com/wp-content/uploads/2015/05/Dissecting-LinuxMoose.pdf"
        Source = "https://github.com/eset/malware-ioc/"
        Contact = "github@eset.com"
        License = "BSD 2-Clause"
    strings:
        $s0 = "Status: OK"
        $s1 = "--scrypt"
        $s2 = "stratum+tcp://"
        $s3 = "cmd.so"
        $s4 = "/Challenge"
        $s7 = "processor"
        $s9 = "cpu model"
        $s21 = "password is wrong"
        $s22 = "password:"
        $s23 = "uthentication failed"
        $s24 = "sh"
        $s25 = "ps"
        $s26 = "echo -n -e "
        $s27 = "chmod"
        $s28 = "elan2"
        $s29 = "elan3"
        $s30 = "chmod: not found"
        $s31 = "cat /proc/cpuinfo"
        $s32 = "/proc/%s/cmdline"
        $s33 = "kill %s"

    condition:
        is_elf and all of them
}

Ref: http://www.welivesecurity.com/

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