Cobaltbaltstrike_RAW_Payload_http_stager_x86_UTF16

Description

Detects CobaltStrike payloads

Query · yara

strings:
    // x86 default eop utf-16
    $h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }
  condition:
    uint32(@h01+0x013b) == 0x07002600 and
    uint32(@h01+0x0157) == 0xa7007900 and
    uint32(@h01+0x018f) == 0xc6009f00 and
    uint32(@h01+0x01bf) == 0x3b002e00 and
    uint32(@h01+0x01e7) == 0x7b001800 and
    uint32(@h01+0x0219) == 0x5d00e200 and
    uint32(@h01+0x022b) == 0x31005e00 and
    uint32(@h01+0x0249) == 0x0b00e000 and
    uint32(@h01+0x058b) == 0x5600a200 and
    uint32(@h01+0x05b3) == 0xe5005300 and
    uint32(@h01+0x05e9) == 0xe2008900
Raw source Cobaltbaltstrike_RAW_Payload_http_stager_x86_UTF16 · YARA
Esc
Published by Neo23x0/signature-base ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
rule Cobaltbaltstrike_RAW_Payload_http_stager_x86_UTF16
{
  meta:
    author = "Avast Threat Intel Team"
    description = "Detects CobaltStrike payloads"
    reference = "https://github.com/avast/ioc"
    id = "c1602e85-5b42-5005-a6d1-7140cb57a3c7"
  strings:
    // x86 default eop utf-16
    $h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }
  condition:
    uint32(@h01+0x013b) == 0x07002600 and
    uint32(@h01+0x0157) == 0xa7007900 and
    uint32(@h01+0x018f) == 0xc6009f00 and
    uint32(@h01+0x01bf) == 0x3b002e00 and
    uint32(@h01+0x01e7) == 0x7b001800 and
    uint32(@h01+0x0219) == 0x5d00e200 and
    uint32(@h01+0x022b) == 0x31005e00 and
    uint32(@h01+0x0249) == 0x0b00e000 and
    uint32(@h01+0x058b) == 0x5600a200 and
    uint32(@h01+0x05b3) == 0xe5005300 and
    uint32(@h01+0x05e9) == 0xe2008900
}

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