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Commit 1913ff66 by Marc Rivero López Committed by GitHub
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Update APT_Sofacy_Fysbis.yar

parent a6f78737
Showing with 45 additions and 38 deletions
malware/APT_Sofacy_Fysbis.yar
...@@ -9,45 +9,52 @@ ...@@ -9,45 +9,52 @@
Identifier: Sofacy Fysbis Identifier: Sofacy Fysbis
*/ */
rule Sofacy_Fybis_ELF_Backdoor_Gen1 : Sofacy Linux Backdoor APT APT28 { rule Sofacy_Fybis_ELF_Backdoor_Gen1
meta: {
description = "Detects Sofacy Fysbis Linux Backdoor_Naikon_APT_Sample1"
author = "Florian Roth" meta:
reference = "http://researchcenter.paloaltonetworks.com/2016/02/a-look-into-fysbis-sofacys-linux-backdoor/" description = "Detects Sofacy Fysbis Linux Backdoor_Naikon_APT_Sample1"
date = "2016-02-13" author = "Florian Roth"
score = 80 reference = "http://researchcenter.paloaltonetworks.com/2016/02/a-look-into-fysbis-sofacys-linux-backdoor/"
hash1 = "02c7cf55fd5c5809ce2dce56085ba43795f2480423a4256537bfdfda0df85592" date = "2016-02-13"
hash2 = "8bca0031f3b691421cb15f9c6e71ce193355d2d8cf2b190438b6962761d0c6bb" score = 80
strings: hash1 = "02c7cf55fd5c5809ce2dce56085ba43795f2480423a4256537bfdfda0df85592"
$x1 = "Your command not writed to pipe" fullword ascii hash2 = "8bca0031f3b691421cb15f9c6e71ce193355d2d8cf2b190438b6962761d0c6bb"
$x2 = "Terminal don`t started for executing command" fullword ascii
$x3 = "Command will have end with \\n" fullword ascii strings:
$x1 = "Your command not writed to pipe" fullword ascii
$x2 = "Terminal don`t started for executing command" fullword ascii
$x3 = "Command will have end with \\n" fullword ascii
$s1 = "WantedBy=multi-user.target' >> /usr/lib/systemd/system/" fullword ascii
$s2 = "Success execute command or long for waiting executing your command" fullword ascii
$s3 = "ls /etc | egrep -e\"fedora*|debian*|gentoo*|mandriva*|mandrake*|meego*|redhat*|lsb-*|sun-*|SUSE*|release\"" fullword ascii
$s4 = "rm -f /usr/lib/systemd/system/" fullword ascii
$s5 = "ExecStart=" fullword ascii
$s6 = "<table><caption><font size=4 color=red>TABLE EXECUTE FILES</font></caption>" fullword ascii
$s1 = "WantedBy=multi-user.target' >> /usr/lib/systemd/system/" fullword ascii condition:
$s2 = "Success execute command or long for waiting executing your command" fullword ascii ( uint16(0) == 0x457f and filesize < 500KB and 1 of ($x*) ) or ( 1 of ($x*) and 3 of ($s*) )
$s3 = "ls /etc | egrep -e\"fedora*|debian*|gentoo*|mandriva*|mandrake*|meego*|redhat*|lsb-*|sun-*|SUSE*|release\"" fullword ascii
$s4 = "rm -f /usr/lib/systemd/system/" fullword ascii
$s5 = "ExecStart=" fullword ascii
$s6 = "<table><caption><font size=4 color=red>TABLE EXECUTE FILES</font></caption>" fullword ascii
condition:
( uint16(0) == 0x457f and filesize < 500KB and 1 of ($x*) ) or
( 1 of ($x*) and 3 of ($s*) )
} }
rule Sofacy_Fysbis_ELF_Backdoor_Gen2 : Sofacy Linux Backdoor APT APT28 { rule Sofacy_Fysbis_ELF_Backdoor_Gen2
meta: {
description = "Detects Sofacy Fysbis Linux Backdoor"
author = "Florian Roth" meta:
reference = "http://researchcenter.paloaltonetworks.com/2016/02/a-look-into-fysbis-sofacys-linux-backdoor/" description = "Detects Sofacy Fysbis Linux Backdoor"
date = "2016-02-13" author = "Florian Roth"
score = 80 reference = "http://researchcenter.paloaltonetworks.com/2016/02/a-look-into-fysbis-sofacys-linux-backdoor/"
hash1 = "02c7cf55fd5c5809ce2dce56085ba43795f2480423a4256537bfdfda0df85592" date = "2016-02-13"
hash2 = "8bca0031f3b691421cb15f9c6e71ce193355d2d8cf2b190438b6962761d0c6bb" score = 80
hash3 = "fd8b2ea9a2e8a67e4cb3904b49c789d57ed9b1ce5bebfe54fe3d98214d6a0f61" hash1 = "02c7cf55fd5c5809ce2dce56085ba43795f2480423a4256537bfdfda0df85592"
strings: hash2 = "8bca0031f3b691421cb15f9c6e71ce193355d2d8cf2b190438b6962761d0c6bb"
$s1 = "RemoteShell" ascii hash3 = "fd8b2ea9a2e8a67e4cb3904b49c789d57ed9b1ce5bebfe54fe3d98214d6a0f61"
$s2 = "basic_string::_M_replace_dispatch" fullword ascii
$s3 = "HttpChannel" ascii strings:
condition: $s1 = "RemoteShell" ascii
uint16(0) == 0x457f and filesize < 500KB and all of them $s2 = "basic_string::_M_replace_dispatch" fullword ascii
$s3 = "HttpChannel" ascii
condition:
uint16(0) == 0x457f and filesize < 500KB and all of them
} }
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