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/*
This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as long as you use it under this license.
*/
rule TRITON_ICS_FRAMEWORK
{
meta:
author = "nicholas.carr @itsreallynick"
md5 = "0face841f7b2953e7c29c064d6886523"
description = "TRITON framework recovered during Mandiant ICS incident response"
strings:
$python_compiled = ".pyc" nocase ascii wide
$python_module_01 = "__module__" nocase ascii wide
$python_module_02 = "<module>" nocase ascii wide
$python_script_01 = "import Ts" nocase ascii wide
$python_script_02 = "def ts_" nocase ascii wide
$py_cnames_01 = "TS_cnames.py" nocase ascii wide
$py_cnames_02 = "TRICON" nocase ascii wide
$py_cnames_03 = "TriStation " nocase ascii wide
$py_cnames_04 = " chassis " nocase ascii wide
$py_tslibs_01 = "GetCpStatus" nocase ascii wide
$py_tslibs_02 = "ts_" ascii wide
$py_tslibs_03 = " sequence" nocase ascii wide
$py_tslibs_04 = /import Ts(Hi|Low|Base)[^:alpha:]/ nocase ascii wide
$py_tslibs_05 = /module\s?version/ nocase ascii wide
$py_tslibs_06 = "bad " nocase ascii wide
$py_tslibs_07 = "prog_cnt" nocase ascii wide
$py_tsbase_01 = "TsBase.py" nocase ascii wide
$py_tsbase_02 = ".TsBase(" nocase ascii wide
$py_tshi_01 = "TsHi.py" nocase ascii wide
$py_tshi_02 = "keystate" nocase ascii wide
$py_tshi_03 = "GetProjectInfo" nocase ascii wide
$py_tshi_04 = "GetProgramTable" nocase ascii wide
$py_tshi_05 = "SafeAppendProgramMod" nocase ascii wide
$py_tshi_06 = ".TsHi(" ascii nocase wide
$py_tslow_01 = "TsLow.py" nocase ascii wide
$py_tslow_02 = "print_last_error" ascii nocase wide
$py_tslow_03 = ".TsLow(" ascii nocase wide
$py_tslow_04 = "tcm_" ascii wide
$py_tslow_05 = " TCM found" nocase ascii wide
$py_crc_01 = "crc.pyc" nocase ascii wide
$py_crc_02 = "CRC16_MODBUS" ascii wide
$py_crc_03 = "Kotov Alaxander" nocase ascii wide
$py_crc_04 = "CRC_CCITT_XMODEM" ascii wide
$py_crc_05 = "crc16ret" ascii wide
$py_crc_06 = "CRC16_CCITT_x1D0F" ascii wide
$py_crc_07 = /CRC16_CCITT[^_]/ ascii wide
$py_sh_01 = "sh.pyc" nocase ascii wide
$py_keyword_01 = " FAILURE" ascii wide
$py_keyword_02 = "symbol table" nocase ascii wide
$py_TRIDENT_01 = "inject.bin" ascii nocase wide
$py_TRIDENT_02 = "imain.bin" ascii nocase wide
condition:
2 of ($python_*) and 7 of ($py_*) and filesize < 3MB
}