MPRESS

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

}
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.
https://www.autohotkey.com/mpress/mpress_web.htm
MPRESS

Technique Identifier

Technique Tag

Detection Rules

Additional Resources

External Links

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