Linux_Virus_Vit

YARA detection rule by ReversingLabs · MIT

Yara rule that detects Vit virus.

import "elf"
rule Linux_Virus_Vit : tc_detection malicious
{
    meta:

        author              = "ReversingLabs"

        source              = "ReversingLabs"
        status              = "RELEASED"
        sharing             = "TLP:WHITE"
        category            = "MALWARE"
        malware             = "VIT"
        description         = "Yara rule that detects Vit virus."

        tc_detection_type   = "Virus"
        tc_detection_name   = "Vit"
        tc_detection_factor = 5

    strings:

      $vit_entry_point = {
        55 89 E5 81 EC 40 31 00 00 57 56 50 53 51 52 C7 85 D8 CE FF FF 00 00 00 00 C7 85 D4
        CE FF FF 00 00 00 00 C7 85 FC CF FF FF CA 08 00 00 C7 85 F8 CF FF FF B8 06 00 00 C7
        85 F4 CF FF FF AD 08 00 00 C7 85 F0 CF FF FF 50 06 00 00 6A 00 6A 00 8B 45 08 50 E8
        18 FA FF FF 89 C6 83 C4 0C 85 F6 0F 8C E6 01 00 00 6A 00 68 ?? ?? ?? ?? 56 E8 2E FA
        FF FF 83 C4 0C 85 C0 0F 8C C4 01 00 00 8B 85 FC CF FF FF 50 8D 85 00 D0 FF FF 50 56
        E8 2A FA FF FF 89 C2 8B 85 FC CF FF FF 83 C4 0C 39 C2 0F 85 9D 01 00 00 56 E8 E1 F9
        FF FF BE FF FF FF FF 6A 00 6A 00 E9
      }

      $vit_str = "vi324.tmp"

    condition:
        uint32(0) == 0x464C457F and $vit_entry_point at elf.entry_point and $vit_str
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

20cdb74d-52e6-4a34-88e2-af849f3237fc

Propose edits, view related rules, and engage with the community through comments.

Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

Community Discussion