MPRESS

Created the Sunday 19 June 2022. Updated 5 months, 1 week ago.

MPRESS is a free packer. It makes programs and libraries smaller, and decrease start time when the application loaded from a slow removable media or from the network.

It uses in-place decompression technique, which allows to decompress the executable without memory overhead or other drawbacks; it also protects programs against reverse engineering by non-professional hackers. Programs compressed with MPRESS run exactly as before, with no runtime performance penalties.


Technique Identifier

U1403

Technique Tag

MPRESS


Detection Rules

rule MPRESS_V097_V099_MATCODE_Softwarenbsp_nbsp_SignByfly_20080416: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 49 01 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 2B C0 3B FE 73 28 AC 0A C0 74 23 8A C8 24 3F C1 E0 10 66 AD 80 E1 40 74 0F 8B D6 8B CF 03 F0 E8 60 00 00 00 03 F8 EB D8 8B C8 F3 A4 EB D2 5E 5A 83 EA 05 2B C9 3B CA 73 26 8B D9 AC 41 24 FE 3C E8 75 F2 43 83 C1 04 AD 0B C0 78 06 3B C2 73 E5 EB 06 03 C3 78 DF 03 C2 2B C3 89 46 FC EB D6 E8 00 00 00 00 5F 81 C7 69 FF FF FF B0 E9 AA B8 45 01 00 00 AB E8 00 00 00 00 58 05 A3 00 00 00 E9 93 00 00 00 53 56 57 8B F9 8B F2 8B DA 03 D8 51 55 33 C0 8B EB 8B DE 2B D2 2B C9 EB 4F 3B DD 73 6C 2B C9 66 8B 03 8D 5B 02 8A CC 80 E4 0F 0B C0 75 02 B4 10 C0 E9 04 80 C1 03 80 F9 12 72 19 8A 0B 66 83 C1 12 43 66 81 F9 11 01 72 0B 66 8B 0B 81 C1 11 01 00 00 43 43 8B F7 2B F0 F3 A4 12 D2 74 0A 72 B9 8A 03 43 88 07 47 EB F2 3B DD 73 1D 0A 13 F9 74 03 43 EB E6 8B 43 01 89 07 8B 43 05 89 47 04 8D 5B 09 8D 7F 08 33 C0 EB DF 5D 8B C7 59 2B C1 5F 5E 5B C3 E9 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V107_V125_MATCODE_Softwarenbsp_nbsp_SignByfly_20080730: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 9E 02 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 51 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 8B D6 8B CF E8 56 00 00 00 5E 5A 83 EA 05 2B C9 3B CA 73 26 8B D9 AC 41 24 FE 3C E8 75 F2 43 83 C1 04 AD 0B C0 78 06 3B C2 73 E5 EB 06 03 C3 78 DF 03 C2 2B C3 89 46 FC EB D6 E8 00 00 00 00 5F 81 C7 8D FF FF FF B0 E9 AA B8 9A 02 00 00 AB E8 00 00 00 00 58 05 1C 02 00 00 E9 0C 02 00 00 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V107_V125_MATCODE_Software_20080730: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 9E 02 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 51 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 8B D6 8B CF E8 56 00 00 00 5E 5A 83 EA 05 2B C9 3B CA 73 26 8B D9 AC 41 24 FE 3C E8 75 F2 43 83 C1 04 AD 0B C0 78 06 3B C2 73 E5 EB 06 03 C3 78 DF 03 C2 2B C3 89 46 FC EB D6 E8 00 00 00 00 5F 81 C7 8D FF FF FF B0 E9 AA B8 9A 02 00 00 AB E8 00 00 00 00 58 05 1C 02 00 00 E9 0C 02 00 00 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V200_V20X_MATCODE_Software_20090423: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 ?? ?? ?? ?? 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 51 49 8A 44 39 06 88 04 31 75 F6 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V085_V092_MATCODE_Softwarenbsp_nbsp_SignByfly_20080414: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 48 01 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 2B C0 3B FE 73 28 AC 0A C0 74 23 8A C8 24 3F C1 E0 10 66 AD 80 E1 40 74 0F 8B D6 8B CF 03 F0 E8 5F 00 00 00 03 F8 EB D8 8B C8 F3 A4 EB D2 5E 5A 83 EA 05 2B C9 3B CA 73 25 8B D9 AC 41 24 FE 3C E8 75 F2 83 C1 04 AD 0B C0 78 06 3B C2 73 E6 EB 06 03 C3 78 E0 03 C2 2B C3 89 46 FC EB D7 E8 00 00 00 00 5F 81 C7 6A FF FF FF B0 E9 AA B8 44 01 00 00 AB E8 00 00 00 00 58 05 A3 00 00 00 E9 93 00 00 00 53 56 57 8B F9 8B F2 8B DA 03 D8 51 55 33 C0 8B EB 8B DE 2B D2 2B C9 EB 4F 3B DD 73 6C 2B C9 66 8B 03 8D 5B 02 8A CC 80 E4 0F 0B C0 75 02 B4 10 C0 E9 04 80 C1 03 80 F9 12 72 19 8A 0B 66 83 C1 12 43 66 81 F9 11 01 72 0B 66 8B 0B 81 C1 11 01 00 00 43 43 8B F7 2B F0 F3 A4 12 D2 74 0A 72 B9 8A 03 43 88 07 47 EB F2 3B DD 73 1D 0A 13 F9 74 03 43 EB E6 8B 43 01 89 07 8B 43 05 89 47 04 8D 5B 09 8D 7F 08 33 C0 EB DF 5D 8B C7 59 2B C1 5F 5E 5B C3 E9 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V071a_V075b_MATCODE_Softwarenbsp_nbsp_SignByfly_20080310: PEiD
{
    strings:
        $a = { 57 56 53 51 52 55 E8 10 00 00 00 E8 7A 00 00 00 5D 5A 59 5B 5E 5F E9 84 01 00 00 E8 00 00 00 00 58 05 84 01 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 AD 2B C8 03 F1 8B C8 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 2B C0 AC 0A C0 74 37 8A C8 24 3F 80 E1 C0 C1 E0 10 66 AD 80 F9 C0 74 1E F6 C1 40 75 0A 8B C8 2B C0 F3 AA 75 FC EB D9 8B D6 8B CF 03 F0 E8 8F 00 00 00 03 F8 EB CA 8B C8 F3 A4 75 FC EB C2 C3 E8 00 00 00 00 5F 81 C7 71 FF FF FF B0 E9 AA B8 9A 01 00 00 AB 2B FF E8 00 00 00 00 58 05 FE 00 00 00 8B 78 08 8B D7 8B 78 04 0B FF 74 53 8B 30 03 F0 2B F2 8B EE 8B C2 8B 45 3C 03 C5 8B 48 34 2B CD 74 3D E8 00 00 00 00 58 05 DD 00 00 00 8B 10 03 F2 03 FE 2B C0 AD 3B F7 73 25 8B D8 AD 3B F7 73 1E 8B D0 83 EA 08 03 D6 66 AD 0A E4 74 0B 25 FF 0F 00 00 03 C3 03 C5 29 08 3B F2 73 D8 EB E9 C3 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V097_V099_MATCODE_Software_20080416: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 49 01 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 2B C0 3B FE 73 28 AC 0A C0 74 23 8A C8 24 3F C1 E0 10 66 AD 80 E1 40 74 0F 8B D6 8B CF 03 F0 E8 60 00 00 00 03 F8 EB D8 8B C8 F3 A4 EB D2 5E 5A 83 EA 05 2B C9 3B CA 73 26 8B D9 AC 41 24 FE 3C E8 75 F2 43 83 C1 04 AD 0B C0 78 06 3B C2 73 E5 EB 06 03 C3 78 DF 03 C2 2B C3 89 46 FC EB D6 E8 00 00 00 00 5F 81 C7 69 FF FF FF B0 E9 AA B8 45 01 00 00 AB E8 00 00 00 00 58 05 A3 00 00 00 E9 93 00 00 00 53 56 57 8B F9 8B F2 8B DA 03 D8 51 55 33 C0 8B EB 8B DE 2B D2 2B C9 EB 4F 3B DD 73 6C 2B C9 66 8B 03 8D 5B 02 8A CC 80 E4 0F 0B C0 75 02 B4 10 C0 E9 04 80 C1 03 80 F9 12 72 19 8A 0B 66 83 C1 12 43 66 81 F9 11 01 72 0B 66 8B 0B 81 C1 11 01 00 00 43 43 8B F7 2B F0 F3 A4 12 D2 74 0A 72 B9 8A 03 43 88 07 47 EB F2 3B DD 73 1D 0A 13 F9 74 03 43 EB E6 8B 43 01 89 07 8B 43 05 89 47 04 8D 5B 09 8D 7F 08 33 C0 EB DF 5D 8B C7 59 2B C1 5F 5E 5B C3 E9 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V085_V092_MATCODE_Software_20080414: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 48 01 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 2B C0 3B FE 73 28 AC 0A C0 74 23 8A C8 24 3F C1 E0 10 66 AD 80 E1 40 74 0F 8B D6 8B CF 03 F0 E8 5F 00 00 00 03 F8 EB D8 8B C8 F3 A4 EB D2 5E 5A 83 EA 05 2B C9 3B CA 73 25 8B D9 AC 41 24 FE 3C E8 75 F2 83 C1 04 AD 0B C0 78 06 3B C2 73 E6 EB 06 03 C3 78 E0 03 C2 2B C3 89 46 FC EB D7 E8 00 00 00 00 5F 81 C7 6A FF FF FF B0 E9 AA B8 44 01 00 00 AB E8 00 00 00 00 58 05 A3 00 00 00 E9 93 00 00 00 53 56 57 8B F9 8B F2 8B DA 03 D8 51 55 33 C0 8B EB 8B DE 2B D2 2B C9 EB 4F 3B DD 73 6C 2B C9 66 8B 03 8D 5B 02 8A CC 80 E4 0F 0B C0 75 02 B4 10 C0 E9 04 80 C1 03 80 F9 12 72 19 8A 0B 66 83 C1 12 43 66 81 F9 11 01 72 0B 66 8B 0B 81 C1 11 01 00 00 43 43 8B F7 2B F0 F3 A4 12 D2 74 0A 72 B9 8A 03 43 88 07 47 EB F2 3B DD 73 1D 0A 13 F9 74 03 43 EB E6 8B 43 01 89 07 8B 43 05 89 47 04 8D 5B 09 8D 7F 08 33 C0 EB DF 5D 8B C7 59 2B C1 5F 5E 5B C3 E9 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V077b_MATCODE_Softwarenbsp_nbsp_SignByfly_20080313: PEiD
{
    strings:
        $a = { 60 E8 0B 00 00 00 E8 77 00 00 00 61 E9 75 01 00 00 E8 00 00 00 00 58 05 75 01 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 AD 2B C8 03 F1 8B C8 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 2B C0 3B FE 73 3A AC 0A C0 74 35 8A C8 24 3F 80 E1 C0 C1 E0 10 66 AD 80 F9 C0 74 1C F6 C1 40 75 08 8B C8 2B C0 F3 AA EB D7 8B D6 8B CF 03 F0 E8 7E 00 00 00 03 F8 EB C8 8B C8 F3 A4 75 FC EB C0 C3 E8 00 00 00 00 5F 81 C7 79 FF FF FF B0 E9 AA B8 81 01 00 00 AB 2B FF E8 00 00 00 00 58 05 ED 00 00 00 8B 78 08 8B D7 8B 78 04 0B FF 74 42 8B 30 03 F0 2B F2 8B EE 8B 48 10 2B CD 74 33 8B 50 0C 03 F2 03 FE 2B C0 AD 3B F7 73 25 8B D8 AD 3B F7 73 1E 8B D0 83 EA 08 03 D6 66 AD 0A E4 74 0B 25 FF 0F 00 00 03 C3 03 C5 29 08 3B F2 73 D8 EB E9 C3 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V101_MATCODE_Software_20080730: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 ?? ?? ?? ?? 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 51 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 8B D6 8B CF E8 56 00 00 00 5E 5A 83 EA 05 2B C9 3B CA 73 26 8B D9 AC 41 24 FE 3C E8 75 F2 43 83 C1 04 AD 0B C0 78 06 3B C2 73 E5 EB 06 03 C3 78 DF 03 C2 2B C3 89 46 FC EB D6 E8 00 00 00 00 5F 81 C7 8D FF FF FF B0 E9 AA B8 B2 02 00 00 AB E8 00 00 00 00 58 05 34 02 00 00 E9 24 02 00 00 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V071a_V075b_MATCODE_Software_20080310: PEiD
{
    strings:
        $a = { 57 56 53 51 52 55 E8 10 00 00 00 E8 7A 00 00 00 5D 5A 59 5B 5E 5F E9 84 01 00 00 E8 00 00 00 00 58 05 84 01 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 AD 2B C8 03 F1 8B C8 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 2B C0 AC 0A C0 74 37 8A C8 24 3F 80 E1 C0 C1 E0 10 66 AD 80 F9 C0 74 1E F6 C1 40 75 0A 8B C8 2B C0 F3 AA 75 FC EB D9 8B D6 8B CF 03 F0 E8 8F 00 00 00 03 F8 EB CA 8B C8 F3 A4 75 FC EB C2 C3 E8 00 00 00 00 5F 81 C7 71 FF FF FF B0 E9 AA B8 9A 01 00 00 AB 2B FF E8 00 00 00 00 58 05 FE 00 00 00 8B 78 08 8B D7 8B 78 04 0B FF 74 53 8B 30 03 F0 2B F2 8B EE 8B C2 8B 45 3C 03 C5 8B 48 34 2B CD 74 3D E8 00 00 00 00 58 05 DD 00 00 00 8B 10 03 F2 03 FE 2B C0 AD 3B F7 73 25 8B D8 AD 3B F7 73 1E 8B D0 83 EA 08 03 D6 66 AD 0A E4 74 0B 25 FF 0F 00 00 03 C3 03 C5 29 08 3B F2 73 D8 EB E9 C3 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V077b_MATCODE_Software_20080313: PEiD
{
    strings:
        $a = { 60 E8 0B 00 00 00 E8 77 00 00 00 61 E9 75 01 00 00 E8 00 00 00 00 58 05 75 01 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 AD 2B C8 03 F1 8B C8 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 2B C0 3B FE 73 3A AC 0A C0 74 35 8A C8 24 3F 80 E1 C0 C1 E0 10 66 AD 80 F9 C0 74 1C F6 C1 40 75 08 8B C8 2B C0 F3 AA EB D7 8B D6 8B CF 03 F0 E8 7E 00 00 00 03 F8 EB C8 8B C8 F3 A4 75 FC EB C0 C3 E8 00 00 00 00 5F 81 C7 79 FF FF FF B0 E9 AA B8 81 01 00 00 AB 2B FF E8 00 00 00 00 58 05 ED 00 00 00 8B 78 08 8B D7 8B 78 04 0B FF 74 42 8B 30 03 F0 2B F2 8B EE 8B 48 10 2B CD 74 33 8B 50 0C 03 F2 03 FE 2B C0 AD 3B F7 73 25 8B D8 AD 3B F7 73 1E 8B D0 83 EA 08 03 D6 66 AD 0A E4 74 0B 25 FF 0F 00 00 03 C3 03 C5 29 08 3B F2 73 D8 EB E9 C3 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V107_V12X_MATCODE_Software_20080730: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 9E 02 00 00 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 51 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 8B D6 8B CF E8 56 00 00 00 5E 5A 83 EA 05 2B C9 3B CA 73 26 8B D9 AC 41 24 FE 3C E8 75 F2 43 83 C1 04 AD 0B C0 78 06 3B C2 73 E5 EB 06 03 C3 78 DF 03 C2 2B C3 89 46 FC EB D6 E8 00 00 00 00 5F 81 C7 8D FF FF FF B0 E9 AA B8 9A 02 00 00 AB E8 00 00 00 00 58 05 1C 02 00 00 E9 0C 02 00 00 }
    condition:
        $a at pe.entry_point

}
rule MPRESS_V101_MATCODE_Softwarenbsp_nbsp_SignByfly_20080730: PEiD
{
    strings:
        $a = { 60 E8 00 00 00 00 58 05 ?? ?? ?? ?? 8B 30 03 F0 2B C0 8B FE 66 AD C1 E0 0C 8B C8 50 AD 2B C8 03 F1 8B C8 57 51 49 8A 44 39 06 74 05 88 04 31 EB F4 88 04 31 8B D6 8B CF E8 56 00 00 00 5E 5A 83 EA 05 2B C9 3B CA 73 26 8B D9 AC 41 24 FE 3C E8 75 F2 43 83 C1 04 AD 0B C0 78 06 3B C2 73 E5 EB 06 03 C3 78 DF 03 C2 2B C3 89 46 FC EB D6 E8 00 00 00 00 5F 81 C7 8D FF FF FF B0 E9 AA B8 B2 02 00 00 AB E8 00 00 00 00 58 05 34 02 00 00 E9 24 02 00 00 }
    condition:
        $a at pe.entry_point

}

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