APT_MAL_Sandworm_Exaramel_Struct

Description

Detects the beginning of type _type struct for some of the most important structs in Exaramel malware

Query · yara

strings:
      $struct_le_config = {70 00 00 00 00 00 00 00 58 00 00 00 00 00 00 00 47 2d 28 42 0? [2] 19}
      $struct_le_worker = {30 00 00 00 00 00 00 00 30 00 00 00 00 00 00 00 46 6a 13 e2 0? [2] 19}
      $struct_le_client = {20 00 00 00 00 00 00 00 10 00 00 00 00 00 00 00 7b 6a 49 84 0? [2] 19}
      $struct_le_report = {30 00 00 00 00 00 00 00 28 00 00 00 00 00 00 00 bf 35 0d f9 0? [2] 19}
      $struct_le_task = {50 00 00 00 00 00 00 00 20 00 00 00 00 00 00 00 88 60 a1 c5 0? [2] 19}
   condition:
      any of them
Raw source APT_MAL_Sandworm_Exaramel_Struct · YARA
Esc
Published by Neo23x0/signature-base ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
rule APT_MAL_Sandworm_Exaramel_Struct {
   meta:
      author = "FR/ANSSI/SDO"
      description = "Detects the beginning of type _type struct for some of the most important structs in Exaramel malware"
      reference = "https://www.cert.ssi.gouv.fr/uploads/CERTFR-2021-CTI-005.pdf"
      date = "2021-02-15"
      score = 80
      id = "8282e485-966c-554d-8e41-70dc1657f5ea"
   strings:
      $struct_le_config = {70 00 00 00 00 00 00 00 58 00 00 00 00 00 00 00 47 2d 28 42 0? [2] 19}
      $struct_le_worker = {30 00 00 00 00 00 00 00 30 00 00 00 00 00 00 00 46 6a 13 e2 0? [2] 19}
      $struct_le_client = {20 00 00 00 00 00 00 00 10 00 00 00 00 00 00 00 7b 6a 49 84 0? [2] 19}
      $struct_le_report = {30 00 00 00 00 00 00 00 28 00 00 00 00 00 00 00 bf 35 0d f9 0? [2] 19}
      $struct_le_task = {50 00 00 00 00 00 00 00 20 00 00 00 00 00 00 00 88 60 a1 c5 0? [2] 19}
   condition:
      any of them
}

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