Commit 970711ef by Marc Rivero López Committed by GitHub

Update MALW_Atmos.yar

parent b03218bf
...@@ -3,8 +3,9 @@ ...@@ -3,8 +3,9 @@
*/ */
rule Atmos_Malware : kutuzov_101 Banker Atmos rule Atmos_Malware
{ {
meta: meta:
description = "Generic Spyware.Citadel.Atmos Signature" description = "Generic Spyware.Citadel.Atmos Signature"
author = "xylitol@temari.fr" author = "xylitol@temari.fr"
...@@ -46,18 +47,15 @@ rule Atmos_Malware : kutuzov_101 Banker Atmos ...@@ -46,18 +47,15 @@ rule Atmos_Malware : kutuzov_101 Banker Atmos
$WB6 = "Chrome" wide ascii $WB6 = "Chrome" wide ascii
condition: condition:
($MZ at 0 and $LKEY) and ($MZ at 0 and $LKEY) and ( (5 of ($TS*) and all of ($WB*)) or (3 of ($VNC*) and all of ($WB*)))
(
(5 of ($TS*) and all of ($WB*)) or
(3 of ($VNC*) and all of ($WB*))
)
and filesize < 300KB // Standard size (raw from builder) should be arround ~264kb and filesize < 300KB // Standard size (raw from builder) should be arround ~264kb
// Remove the above line if you want to trig also on memory dumps, etc... // Remove the above line if you want to trig also on memory dumps, etc...
} }
rule Atmos_Packed_Malware : Packed Atmos Banker rule Atmos_Packed_Malware
{ {
meta: meta:
description = "Second Generic Spyware.Citadel.Atmos signture when builder add a packed layer" description = "Second Generic Spyware.Citadel.Atmos signture when builder add a packed layer"
author = "xylitol@temari.fr" author = "xylitol@temari.fr"
...@@ -67,29 +65,25 @@ rule Atmos_Packed_Malware : Packed Atmos Banker ...@@ -67,29 +65,25 @@ rule Atmos_Packed_Malware : Packed Atmos Banker
strings: strings:
$MZ = {4D 5A} $MZ = {4D 5A}
// Entry point identifier with CreateThread pointer in '??' // Entry point identifier with CreateThread pointer in '??'
$a = {55 8B EC 83 EC 0C 53 56 8B 35 ?? ?? ?? 00 57 33 DB BF 00 28 00 00} $a = {55 8B EC 83 EC 0C 53 56 8B 35 ?? ?? ?? 00 57 33 DB BF 00 28 00 00}
// End of main proc with sleep value in '??' and api call to sleep in '??' // End of main proc with sleep value in '??' and api call to sleep in '??'
$b = {68 ?? ?? ?? ?? FF 15 ?? ?? ?? 00 E9 62 FF FF FF E8 69 10 FE FF 5F 5E 5B C9 C3} $b = {68 ?? ?? ?? ?? FF 15 ?? ?? ?? 00 E9 62 FF FF FF E8 69 10 FE FF 5F 5E 5B C9 C3}
// API String identifier (ShellExecuteExW, SHELL32.dll, GetUserNameExW, Secur32.dll) // API String identifier (ShellExecuteExW, SHELL32.dll, GetUserNameExW, Secur32.dll)
$c = {53 68 65 6C 6C 45 78 65 63 75 74 65 45 78 57 00 53 48 45 4C 4C 33 32 2E 64 6C 6C 00 1E 00 47 65} $c = {53 68 65 6C 6C 45 78 65 63 75 74 65 45 78 57 00 53 48 45 4C 4C 33 32 2E 64 6C 6C 00 1E 00 47 65}
$d = {74 55 73 65 72 4E 61 6D 65 45 78 57 00 00 53 65 63 75 72 33 32 2E 64 6C 6C 00 10 00} $d = {74 55 73 65 72 4E 61 6D 65 45 78 57 00 00 53 65 63 75 72 33 32 2E 64 6C 6C 00 10 00}
// New Thread identifier // New Thread identifier
$e = {55 8B EC 83 E4 F8 83 EC 1C 83 7D 08 00 57 74 ?? 6A FF FF 75 08 FF 15 ?? ?? ?? 00} $e = {55 8B EC 83 E4 F8 83 EC 1C 83 7D 08 00 57 74 ?? 6A FF FF 75 08 FF 15 ?? ?? ?? 00}
condition: condition:
all of them all of them and filesize < 300KB // Standard size (raw from builder) should be arround ~264kb
and filesize < 300KB // Standard size (raw from builder) should be arround ~264kb
// Remove the above line if you want to trig also on memory dumps, etc... // Remove the above line if you want to trig also on memory dumps, etc...
} }
rule Atmos_Builder : Cracked kutuzov Builder rule Atmos_Builder
{ {
meta: meta:
description = "Generic signature for Hacktool.Atmos.Builder cracked version" description = "Generic signature for Hacktool.Atmos.Builder cracked version"
author = "xylitol@temari.fr" author = "xylitol@temari.fr"
......
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