YARA rules for Remsec
13 rules · scoped to tool · back to Remsec
YARA rules whose family, name, or description matches this tool or its tooling. Use these for binary-pattern hunts.
rule remsec_executable_blob_32 {
meta:
copyright = "Symantec"
description = "Detects malware from Symantec's Strider APT report"
score = 80
date = "2016/08/08"
reference = "http://www.symantec.com/connect/blogs/strider-cyberespionage-group-turns-eye-sauron-targets"
id = "d7a7e57a-b117-5da8-a7a2-4c6351bd9072"
strings:
$code = { 31 06 83 C6 04 D1 E8 73 05 35 01 00 00 D0 E2 F0 }
condition:
all of them
}
rule remsec_executable_blob_64 {
meta:
copyright = "Symantec"
description = "Detects malware from Symantec's Strider APT report"
score = 80
date = "2016/08/08"
reference = "http://www.symantec.com/connect/blogs/strider-cyberespionage-group-turns-eye-sauron-targets"
id = "22345f40-3dae-5d5b-acc6-c67394475636"
strings:
$code = { 31 06 48 83 C6 04 D1 E8 73 05 35 01 00 00 D0 E2 EF }
condition:
all of them
}
rule remsec_executable_blob_parser {
meta:
copyright = "Symantec"
description = "Detects malware from Symantec's Strider APT report"
score = 80
date = "2016/08/08"
reference = "http://www.symantec.com/connect/blogs/strider-cyberespionage-group-turns-eye-sauron-targets"
id = "b2189bfe-7b84-5fe9-8829-64f49d1e2030"
strings:
$code = { ( 0F 82 ?? ?? 00 00 | 72 ?? ) ( 80 | 41 80 ) ( 7? | 7C 24 ) 04 02 ( 0F 85 ?? ?? 00 00 | 75 ?? ) ( 81 | 41 81 ) ( 3? | 3C 24 | 7D 00 ) 02 AA 02 C1 ( 0F 85 ?? ?? 00 00 | 75 ?? ) ( 8B | 41 8B | 44 8B | 45 8B ) ( 4? | 5? | 6? | 7? | ?4 24 | ?C 24 ) 06 }
condition:
all of them
}
rule remsec_encrypted_api {
meta:
copyright = "Symantec"
description = "Detects malware from Symantec's Strider APT report"
score = 80
date = "2016/08/08"
reference = "http://www.symantec.com/connect/blogs/strider-cyberespionage-group-turns-eye-sauron-targets"
id = "1aa3380b-d704-5eb9-b25d-f4bf20ae7179"
strings:
$open_process = { 91 9A 8F B0 9C 90 8D AF 8C 8C 9A FF }
condition:
all of them
}
rule remsec_packer_A {
meta:
copyright = "Symantec"
description = "Detects malware from Symantec's Strider APT report"
score = 80
date = "2016/08/08"
reference = "http://www.symantec.com/connect/blogs/strider-cyberespionage-group-turns-eye-sauron-targets"
id = "d75198ab-b1ea-572a-a674-9a38c3e2958b"
strings:
$code = { 69 ( C? | D? | E? | F? ) AB 00 00 00 ( 81 | 41 81 ) C? CD 2B 00 00 ( F7 | 41 F7 ) E? ( C1 | 41 C1 ) E? 0D ( 69 | 45 69 ) ( C? | D? | E? | F? ) 85 CF 00 00 ( 29 | 41 29 | 44 29 | 45 29 | 2B | 41 2B | 44 2B | 45 2B ) }
condition:
all of them
}
rule remsec_packer_B {
meta:
copyright = "Symantec"
description = "Detects malware from Symantec's Strider APT report"
score = 80
date = "2016/08/08"
reference = "http://www.symantec.com/connect/blogs/strider-cyberespionage-group-turns-eye-sauron-targets"
id = "18e7f84e-27f2-532d-9ead-0db6e9e6c0b2"
strings:
$code = { 48 8B 05 ?? ?? ?? ?? 48 89 44 24 ?? 48 8B 05 ?? ?? ?? ?? 48 8D 4C 24 ?? 48 89 44 24 ?? 48 8D ( 45 ?? | 84 24 ?? ?? 00 00 ) ( 44 88 6? 24 ?? | C6 44 24 ?? 00 ) 48 89 44 24 ?? 48 8D ( 45 ?? | 84 24 ?? ?? 00 00 ) C7 44 24 ?? 0? 00 00 00 2B ?8 48 89 ?C 24 ?? 44 89 6? 24 ?? 83 C? 08 89 ?C 24 ?? ( FF | 41 FF ) D? ( 05 | 8D 88 ) 00 00 00 3A }
condition:
all of them
}
rule apt_ProjectSauron_pipe_backdoor {
meta:
copyright = "Kaspersky Lab"
description = "Rule to detect ProjectSauron pipe backdoors"
version = "1.0"
reference = "https://securelist.com/blog/"
id = "5a1dd4b3-a03c-51bb-a7bc-25729b487f70"
strings:
$a1 = "CreateNamedPipeW" fullword ascii
$a2 = "SetSecurityDescriptorDacl" fullword ascii
$a3 = "GetOverlappedResult" fullword ascii
$a4 = "TerminateThread" fullword ascii
$a5 = "%s%s%X" fullword wide
condition:
uint16(0) == 0x5A4D
and (all of ($a*))
and filesize < 100000
}
rule apt_ProjectSauron_encrypted_LSA {
meta:
copyright = "Kaspersky Lab"
description = "Rule to detect ProjectSauron encrypted LSA samples"
version = "1.0"
reference = "https://securelist.com/blog/"
id = "f6fd8619-60f0-5c0d-aa66-cd0e154de63c"
strings:
$a1 = "EFEB0A9C6ABA4CF5958F41DB6A31929776C643DEDC65CC9B67AB8B0066FF2492" fullword ascii
$a2 = "\\Device\\NdisRaw_" ascii
$a3 = "\\\\.\\GLOBALROOT\\Device\\{8EDB44DC-86F0-4E0E-8068-BD2CABA4057A}" fullword wide
$a4 = "Global\\{a07f6ba7-8383-4104-a154-e582e85a32eb}" fullword wide
$a5 = "Missing function %S::#%d" fullword wide
$a6 = {8945D08D8598FEFFFF2BD08945D88D45BC83C20450C745C0030000008975C48955DCFF55FC8BF88D8F0000003A83F90977305333DB53FF15}
$a7 = {488D4C24304889442450488D452044886424304889442460488D4520C7442434030000002BD848897C243844896C244083C308895C246841FFD68D880000003A8BD883F909772DFF}
condition:
uint16(0) == 0x5A4D
and (any of ($a*) or
(
pe.exports("InitializeChangeNotify") and
pe.exports("PasswordChangeNotify") and
math.entropy(0x400, filesize) >= 7.5
))
and filesize < 1000000
}
rule apt_ProjectSauron_encrypted_SSPI {
meta:
copyright = "Kaspersky Lab"
description = "Rule to detect encrypted ProjectSauron SSPI samples"
version = "1.0"
reference = "https://securelist.com/blog/"
id = "43c0e772-46d2-510e-bea1-6f505199f38c"
condition:
uint16(0) == 0x5A4D and
filesize < 1000000 and
pe.exports("InitSecurityInterfaceA") and
pe.characteristics & pe.DLL and
(pe.machine == pe.MACHINE_AMD64 or pe.machine == pe.MACHINE_IA64) and
math.entropy(0x400, filesize) >= 7.5
}
rule apt_ProjectSauron_MyTrampoline {
meta:
copyright = "Kaspersky Lab"
description = "Rule to detect ProjectSauron MyTrampoline module"
version = "1.0"
reference = "https://securelist.com/blog/"
id = "b4f2cabf-11da-5fa1-8c23-0a177f8a4741"
strings:
$a1 = ":\\System Volume Information\\{" wide
$a2 = "\\\\.\\PhysicalDrive%d" wide
$a3 = "DMWndClassX%d"
$b1 = "{774476DF-C00F-4e3a-BF4A-6D8618CFA532}" ascii wide
$b2 = "{820C02A4-578A-4750-A409-62C98F5E9237}" ascii wide
condition:
uint16(0) == 0x5A4D and
filesize < 5000000 and
(all of ($a*) or any of ($b*))
}
rule apt_ProjectSauron_encrypted_container {
meta:
copyright = "Kaspersky Lab"
description = "Rule to detect ProjectSauron samples encrypted container"
version = "1.0"
reference = "https://securelist.com/blog/"
id = "4462ebd9-24eb-570a-94b8-6fa6bf2a5a63"
strings:
$vfs_header = {02 AA 02 C1 02 0?}
$salt = {91 0A E0 CC 0D FE CE 36 78 48 9B 9C 97 F7 F5 55}
condition:
uint16(0) == 0x5A4D
and ((@vfs_header < 0x4000) or $salt) and
math.entropy(0x400, filesize) >= 6.5 and
(filesize > 0x400) and filesize < 10000000
}
rule apt_ProjectSauron_encryption {
meta:
copyright = "Kaspersky Lab"
description = "Rule to detect ProjectSauron string encryption"
version = "1.0"
reference = "https://securelist.com/blog/"
id = "b3139045-54f5-5d59-980b-8510faa9ad0e"
strings:
$a1 = {81??02AA02C175??8B??0685}
$a2 = {918D9A94CDCC939A93939BD18B9AB8DE9C908DAF8D9B9BBE8C8C9AFF}
$a3 = {803E225775??807E019F75??807E02BE75??807E0309}
condition:
filesize < 5000000 and
any of ($a*)
}
rule apt_ProjectSauron_generic_pipe_backdoor {
meta:
copyright = "Kaspersky Lab"
description = "Rule to detect ProjectSauron generic pipe backdoors"
version = "1.0"
reference = "https://securelist.com/blog/"
id = "77a82c67-7ee1-5d1f-ad75-28ce174e41bc"
strings:
$a = { C7 [2-3] 32 32 32 32 E8 }
$b = { 42 12 67 6B }
$c = { 25 31 5F 73 }
$d = "rand"
$e = "WS2_32"
condition:
uint16(0) == 0x5A4D and
(all of them) and
filesize < 400000
}