Hayabusa high test sigma
Potentially Suspicious Malware Callback Communication
Detects programs that connect to known malware callback ports based on statistical analysis from two different sandbox system databases
Detection Logic
{
"network_connection": {
"EventID": 5156,
"Channel": "Security"
},
"selection": {
"Direction": "%%14593",
"DestPort": [
100,
198,
200,
243,
473,
666,
700,
743,
777,
1443,
1515,
1777,
1817,
1904,
1960,
2443,
2448,
3360,
3675,
3939,
4040,
4433,
4438,
4443,
4444,
4455,
5445,
5552,
5649,
6625,
7210,
7777,
8143,
8843,
9631,
9943,
10101,
12102,
12103,
12322,
13145,
13394,
13504,
13505,
13506,
13507,
14102,
14103,
14154,
49180,
65520,
65535
]
},
"filter_main_local_ranges": {
"DestAddress
| cidr": [
"127.0.0.0/8",
"10.0.0.0/8",
"172.16.0.0/12",
"192.168.0.0/16",
"169.254.0.0/16",
"::1/128",
"fe80::/10",
"fc00::/7"
]
},
"filter_optional_sys_directories": {
"Application
| startswith": [
"\\device\\harddiskvolume?\\Program Files\\",
"\\device\\harddiskvolume?\\Program Files (x86)\\"
]
},
"condition": "network_connection and (selection and not 1 of filter_main_* and not 1 of filter_optional_*)"
} False Positives
- ⚠ Unknown
Field Validations
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