Crinkler

Created the Sunday 19 June 2022. Updated 6 months, 2 weeks ago.

Crinkler is a compressing linker for Windows, specifically targeted towards executables with a size of just a few kilobytes.

Technique Identifier

U1413

Detection Rules

                                    rule Crinkler_V01_V02_Rune_LHStubbe_and_Aske_Simon_Christensen: PEiD
{
    strings:
        $a = { B9 ?? ?? ?? ?? 01 C0 68 ?? ?? ?? ?? 6A 00 58 50 6A 00 5F 48 5D BB 03 00 00 00 BE ?? ?? ?? ?? E9 }
    condition:
        $a at pe.entry_point

}
rule Crinkler_V03_V04_Rune_LHStubbe_and_Aske_Simon_Christensen_additional: PEiD
{
    strings:
        $a = { B8 00 00 00 00 60 0B C0 74 58 E8 00 00 00 00 58 05 43 00 00 00 80 38 E9 75 03 61 EB 35 E8 00 00 00 00 58 25 00 F0 FF FF 33 FF 66 BB 19 5A 66 83 C3 34 66 39 18 75 12 0F B7 50 3C 03 D0 BB E9 44 }
    condition:
        $a at pe.entry_point

}
rule Crinkler_V01_V02_Rune_LHStubbe_and_Aske_Simon_Christensen_additional: PEiD
{
    strings:
        $a = { B8 EF BE AD DE 50 6A ?? FF 15 10 19 40 ?? E9 AD FF FF FF }
    condition:
        $a at pe.entry_point

}
rule Crinkler_V03_V04_Rune_LHStubbe_and_Aske_Simon_Christensen: PEiD
{
    strings:
        $a = { B8 00 00 42 00 31 DB 43 EB 58 }
    condition:
        $a at pe.entry_point

}

Additional Resources

External Links

The resources provided below are associated links that will give you even more detailed information and research on current evasion technique. It is important to note that, while these resources may be helpful, it is important to exercise caution when following external links. As always, be careful when clicking on links from unknown sources, as they may lead to malicious content.

GitHub - runestubbe/Crinkler: Crinkler is an executable file compressor (or rather, a compressing linker) for Windows for compressing small demoscene executables. As of 2020, it is the most widely used tool for compressing 1k/4k/8k intros.

Crinkler

Technique Identifier

Detection Rules

Additional Resources

External Links

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