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Lz installers install creator #858

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merged 2 commits into from
Sep 25, 2020
Merged

Lz installers install creator #858

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d28f594
Added YARA rule for Install Creator
Sep 23, 2020
c169915
Added YARA rule for missing NSIS installers
Sep 23, 2020
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33 changes: 33 additions & 0 deletions support/yara_patterns/tools/pe/x86/installers.yara
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,21 @@ rule ghost_installer {
all of them
}

rule install_creator {
meta:
tool = "I"
name = "InstallCreator"
strings:
$s01 = { 77 77 67 54 29 48 }
condition:
pe.number_of_sections == 3 and
pe.sections[0].name == "UPX0" and
pe.sections[1].name == "UPX1" and
pe.overlay.offset != 0 and
pe.overlay.size != 0 and
$s01 at pe.overlay.offset
}

rule kgb_sfx {
meta:
tool = "I"
Expand Down Expand Up @@ -641,6 +656,24 @@ rule nsis_1xx_pimp {
$1 at pe.entry_point
}

rule nsis_overlay_data {
meta:
tool = "I"
name = "Nullsoft Install System"
strings:
$s01 = { EF BE AD DE 6E 73 69 73 69 6E 73 74 61 6C 6C 00 }
$s02 = { ED BE AD DE 4E 75 6C 6C 53 6F 66 74 49 6E 73 74 }
$s03 = { 0? 00 00 00 EF BE AD DE 4E 75 6C 6C (53|73) 6F 66 74 49 6E 73 74 }
condition:
pe.number_of_sections > 3 and
pe.overlay.size != 0 and
(
@s01 >= pe.overlay.offset or
@s02 >= pe.overlay.offset or
@s03 >= pe.overlay.offset
)
}

rule nsis_13x_pimp {
meta:
tool = "I"
Expand Down