(YARA) YARA_Detect_Exestealth

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rule ExeStealth_WebToolMaster: PEiD
{
    strings:
        $a = { EB 58 53 68 61 72 65 77 61 72 65 2D 56 65 72 73 69 6F 6E 20 45 78 65 53 74 65 61 6C 74 68 2C 20 63 6F 6E 74 61 63 74 20 73 75 70 70 6F 72 74 40 77 65 62 74 6F 6F 6C 6D 61 73 74 65 72 2E 63 6F }
    condition:
        $a at pe.entry_point

}
rule EXEStealth_v275a_WebtoolMaster_h_additional: PEiD
{
    strings:
        $a = { EB 58 53 68 61 72 65 77 61 72 65 2D 56 65 72 73 69 6F 6E 20 45 78 65 53 74 65 61 6C 74 68 2C 20 63 6F 6E 74 61 63 74 20 73 75 70 70 6F 72 74 40 77 65 62 74 6F 6F 6C 6D 61 73 74 65 72 2E 63 6F 6D 20 2D 20 77 77 77 2E 77 65 62 74 6F 6F 6C 6D 61 73 74 65 72 2E 63 6F 6D 00 90 60 90 E8 00 00 00 00 5D 81 ED F7 27 40 00 B9 15 00 00 00 83 C1 04 83 C1 01 EB 05 EB FE 83 C7 56 EB 00 EB 00 83 E9 02 81 C1 78 43 27 65 EB 00 81 C1 10 25 94 00 81 E9 63 85 00 00 B9 96 0C 00 00 90 8D BD 74 28 40 00 8B F7 AC ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? AA E2 C5 }
    condition:
        $a at pe.entry_point

}
rule EXEStealth_275_WebtoolMaster_additional: PEiD
{
    strings:
        $a = { 33 C9 B4 4E CD 21 73 02 FF ?? BA ?? 00 B8 ?? 3D CD 21 }
    condition:
        $a at pe.entry_point

}
rule EXEStealth_276_Unregistered_WebtoolMaster_additional: PEiD
{
    strings:
        $a = { EB ?? 45 78 65 53 74 65 61 6C 74 68 20 56 32 20 53 68 61 72 65 77 61 72 65 20 }
    condition:
        $a at pe.entry_point

}
rule EXEStealth_276_Unregistered_WebtoolMaster: PEiD
{
    strings:
        $a = { EB ?? 45 78 65 53 74 65 61 6C 74 68 20 56 32 20 53 68 61 72 65 77 61 72 65 20 }
    condition:
        $a at pe.entry_point

}
rule EXEStealth_275_WebtoolMaster: PEiD
{
    strings:
        $a = { 90 60 90 E8 00 00 00 00 5D 81 ED D1 27 40 00 B9 15 00 00 00 }
    condition:
        $a at pe.entry_point

}
rule EXEStealth_v275a_WebtoolMaster: PEiD
{
    strings:
        $a = { EB 58 53 68 61 72 65 77 61 72 65 2D 56 65 72 73 69 6F 6E 20 45 78 65 53 74 65 61 6C 74 68 2C 20 63 6F 6E 74 61 63 74 20 73 75 70 70 6F 72 74 40 77 65 62 74 6F 6F 6C 6D 61 73 74 65 72 2E 63 6F 6D 20 2D 20 77 77 77 2E 77 65 62 74 6F 6F 6C 6D 61 73 74 65 72 2E 63 6F 6D 00 90 60 90 E8 00 00 00 00 5D 81 ED F7 27 40 00 B9 15 00 00 00 83 C1 04 83 C1 01 EB 05 EB FE 83 C7 56 EB 00 EB 00 83 E9 02 81 C1 78 43 27 65 EB 00 81 C1 10 25 94 00 81 E9 63 85 00 00 B9 96 0C 00 00 90 8D BD 74 28 40 00 8B F7 AC ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? AA E2 C5 }
    condition:
        $a at pe.entry_point

}
rule ExeStealth_WebToolMaster_additional: PEiD
{
    strings:
        $a = { EB 58 53 68 61 72 65 77 61 72 65 2D 56 65 72 73 69 6F 6E 20 45 78 65 53 74 65 61 6C 74 68 2C 20 63 6F 6E 74 61 63 74 20 73 75 70 70 6F 72 74 40 77 65 62 74 6F 6F 6C 6D 61 73 74 65 72 2E 63 6F }
    condition:
        $a at pe.entry_point

}
rule EXEStealth_v275a_WebtoolMaster_h: PEiD
{
    strings:
        $a = { EB 58 53 68 61 72 65 77 61 72 65 2D 56 65 72 73 69 6F 6E 20 45 78 65 53 74 65 61 6C 74 68 2C 20 63 6F 6E 74 61 63 74 20 73 75 70 70 6F 72 74 40 77 65 62 74 6F 6F 6C 6D 61 73 74 65 72 2E 63 6F 6D 20 2D 20 77 77 77 2E 77 65 62 74 6F 6F 6C 6D 61 73 74 65 72 }
    condition:
        $a at pe.entry_point

}

Associated Techniques

Technique Name Technique ID's Snippet(s) OS
ExeStealth U1405

Created

June 28, 2022

Last Revised

June 28, 2022