Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Improve the detection of Enigma protector (32-bit). #741

Merged
merged 2 commits into from
Apr 15, 2020
+39 −3
Merged

Improve the detection of Enigma protector (32-bit). #741

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
e94d039
Added detection of 64-bit bit programs protected with Enigma.
Apr 15, 2020
cf379f4
Improve the detection of Enigma protector (32-bit).
Apr 15, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 12 additions & 0 deletions support/yara_patterns/tools/pe/x64/packers.yara
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,18 @@

import "pe"

rule enigma_1x {
meta:
tool = "P"
name = "Enigma"
version = "1.x+ (64-bit)"
pattern = "5051525355565741504151415241534154415541564157489C4881EC080000000FAE1C24E8000000005D4881ED??0000004881ED"
strings:
$1 = { 50 51 52 53 55 56 57 41 50 41 51 41 52 41 53 41 54 41 55 41 56 41 57 48 9C 48 81 EC 08 00 00 00 0F AE 1C 24 E8 00 00 00 00 5D 48 81 ED ?? 00 00 00 48 81 ED }
condition:
@1 < pe.overlay.offset or $1
}

rule upx_39x_lzma {
meta:
tool = "P"
Expand Down
30 changes: 27 additions & 3 deletions support/yara_patterns/tools/pe/x86/packers.yara
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4786,16 +4786,28 @@ rule encryptpe_22008618_02 {
$1 at pe.entry_point
}

rule enigma_protector_102 {
rule enigma_0x {
meta:
tool = "P"
name = "Enigma protector"
name = "Enigma"
version = "0.x beta"
pattern = "60E824000000??????EB02????8B44240C8380B80000000331C0C383C008EB02????89C461EB2E??????83042403EB01??31C0EB01??64FF30EB01??648920EB02????8900"
strings:
$1 = { 60 E8 24 00 00 00 ?? ?? ?? EB 02 ?? ?? 8B 44 24 0C 83 80 B8 00 00 00 03 31 C0 C3 83 C0 08 EB 02 ?? ?? 89 C4 61 EB 2E ?? ?? ?? 83 04 24 03 EB 01 ?? 31 C0 EB 01 ?? 64 FF 30 EB 01 ?? 64 89 20 EB 02 ?? ?? 89 00 }
condition:
@1 < pe.overlay.offset or $1
}

rule enigma_102 {
meta:
tool = "P"
name = "Enigma"
version = "1.02"
pattern = "60E8000000005D83ED0681ED??????????????????????????????????????????????????????????????????????E8010000009A83C404EB02FF3560E8240000000000FFEB02CD208B44240C8380B80000000331C0C383C008EB02FF1589C461EB2EEAEB2B83042403EB010031C0EB018564FF30EB0183648920EB02CD2089009A648F0500000000EB02C1905861EB013EBE01000000C1E60283EC0487DE891C24"
strings:
$1 = { 60 E8 00 00 00 00 5D 83 ED 06 81 ED ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? E8 01 00 00 00 9A 83 C4 04 EB 02 FF 35 60 E8 24 00 00 00 00 00 FF EB 02 CD 20 8B 44 24 0C 83 80 B8 00 00 00 03 31 C0 C3 83 C0 08 EB 02 FF 15 89 C4 61 EB 2E EA EB 2B 83 04 24 03 EB 01 00 31 C0 EB 01 85 64 FF 30 EB 01 83 64 89 20 EB 02 CD 20 89 00 9A 64 8F 05 00 00 00 00 EB 02 C1 90 58 61 EB 01 3E BE 01 00 00 00 C1 E6 02 83 EC 04 87 DE 89 1C 24 }
condition:
$1 at pe.entry_point
@1 < pe.overlay.offset or $1
}

rule enigma_11x {
Expand Down Expand Up @@ -4870,6 +4882,18 @@ rule enigma_1x_02 {
$1 at pe.entry_point
}

rule enigma_1x_03 {
meta:
tool = "P"
name = "Enigma"
version = "1.x+"
pattern = "60E8000000005D81ED0600000081ED????????E9??000000454E49474D41"
strings:
$1 = { 60 E8 00 00 00 00 5D 81 ED 06 00 00 00 81 ED ?? ?? ?? ?? E9 ?? 00 00 00 45 4E 49 47 4D 41 }
condition:
@1 < pe.overlay.offset or $1
}

rule enigma_131 {
meta:
tool = "P"
Expand Down