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89 lines
3.4 KiB
Plaintext
89 lines
3.4 KiB
Plaintext
import "pe"
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/*
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Yara Rule Set
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Author: Florian Roth
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Date: 2017-10-18
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Identifier: HKDoor
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Reference: https://www.cylance.com/en_us/blog/threat-spotlight-opening-hackers-door.html
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*/
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rule hkdoor_backdoor_dll {
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meta:
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description = "Hacker's Door Backdoor DLL"
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author = "Cylance Inc."
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reference = "https://www.cylance.com/en_us/blog/threat-spotlight-opening-hackers-door.html"
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strings:
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$s1 = "The version of personal hacker's door server is" fullword ascii
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$s2 = "The connect back interval is %d (minutes)" fullword ascii
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$s3 = "I'mhackeryythac1977" fullword ascii
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$s4 = "Welcome to http://www.yythac.com" fullword ascii
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$s5 = "SeLoadDriverPrivilege" fullword ascii
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condition:
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uint16(0) == 0x5a4d and
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filesize < 400KB and
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( 3 of ($s*) ) and
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pe.characteristics & pe.DLL and
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pe.imports("ws2_32.dll", "WSAStartup") and
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pe.imports("ws2_32.dll", "sendto")
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}
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rule hkdoor_backdoor {
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meta:
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description = "Hacker's Door Backdoor"
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author = "Cylance Inc."
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reference = "https://www.cylance.com/en_us/blog/threat-spotlight-opening-hackers-door.html"
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strings:
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$s1 = "http://www.yythac.com" fullword ascii
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$s2 = "Example:%s 192.168.1.100 139 -p yyt_hac -t 1" fullword ascii
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$s3 = "password-----------The hacker's door's password" fullword ascii
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$s4 = "It is the client of hacker's door %d.%d public version" fullword ascii
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$s5 = "hkdoordll.dll" fullword ascii
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$s6 = "http://www.yythac.com/images/mm.jpg" fullword ascii
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$s7 = "I'mhackeryythac1977" fullword ascii
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$s8 = "yythac.yeah.net" fullword ascii
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condition:
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uint16(0) == 0x5a4d and
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filesize < 400KB and
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( 4 of ($s*) )
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}
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rule hkdoor_dropper {
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meta:
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description = "Hacker's Door Dropper"
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author = "Cylance Inc."
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reference = "https://www.cylance.com/en_us/blog/threat-spotlight-opening-hackers-door.html"
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strings:
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$s1 = "The version of personal hacker's door server is" fullword ascii
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$s2 = "The connect back interval is %d (minutes)" fullword ascii
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$s3 = "I'mhackeryythac1977" fullword ascii
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$s4 = "Welcome to http://www.yythac.com" fullword ascii
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$s5 = "SeLoadDriverPrivilege" fullword ascii
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$s6 = "\\drivers\\ntfs.sys" fullword ascii
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$s7 = "kifes" fullword ascii
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condition:
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uint16(0) == 0x5a4d and
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filesize < 1000KB and
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( 4 of ($s*) ) and
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pe.number_of_resources > 0 and
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for any i in (0..pe.number_of_resources - 1):
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(pe.resources[i].type_string == "B\x00I\x00N\x00" and
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uint16(pe.resources[i].offset) == 0x5A4D) and
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pe.imports("KERNEL32.dll", "FindResourceW") and
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pe.imports("KERNEL32.dll", "LoadResource")
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}
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rule hkdoor_driver {
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meta:
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description = "Hacker's Door Driver"
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strings:
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$s1 = "ipfltdrv.sys" fullword ascii
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$s2 = "Patch Success." fullword ascii
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$s3 = "\\DosDevices\\kifes" fullword ascii
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$s4 = "\\Device\\kifes" fullword ascii
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$s5 = {75 28 22 36 30 5b 4a 77 7b 58 4d 6c 3f 73 63 5e 38 47 7c 7d 7a 40 3a 41 2a 45 4e 44 79 64 67 6d 65 74 21 39 23 3c 20 49 43 69 4c 3b 31 57 2f 55 3e 26 59 62 61 54 53 5a 2d 25 78 35 5c 76 3d 34 27 6b 5f 72 2c 32 4f 2b 71 66 42 33 37 56 52 60 5d 29 4b 51 2e 6f 50 68 6e 6a 24 48 7e 46 70}
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condition:
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uint16(0) == 0x5a4d and
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pe.subsystem == pe.SUBSYSTEM_NATIVE and
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( 4 of ($s*) )
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} |