出典: https://www.us-cert.gov/ncas/analysis-reports/AR18-149A
【資料】
◆MAR-10135536-3 - HIDDEN COBRA RAT/Worm (US-CERT, 2018/05/29)
https://www.us-cert.gov/ncas/analysis-reports/AR18-149A
【関連まとめ記事】
◆Joanap (まとめ)
http://malware-log.hatenablog.com/entry/Joanap
【インディケータ情報】
■ハッシュ情報(Sha256)
| 077d9e0e12357d27f7f0c336239e961a7049971446f7a3f10268d9439ef67885 | |
| a1c483b0ee740291b91b11e18dd05f0a460127acfc19d47b446d11cd0e26d717 | scardprv.dll |
| ea46ed5aed900cd9f01156a1cd446cbb3e10191f9f980e9f710ea1c20440c781 | Wmmvsvc.dll |
| fe7d35d19af5f5ae2939457a06868754b8bdd022e1ff5bdbe4e7c135c48f9a16 |
■Yara
rule Enfal_Generic { meta: author = "NCCIC trusted 3rd party" incident = "10135536" date = "2018-04-12" category = "hidden_cobra" family = "BRAMBUL,JOANAP" MD5_1 = "483B95B1498B615A1481345270BFF87D" MD5_2 = "4731CBAEE7ACA37B596E38690160A749" MD5_3 = "CD60FD107BAACCAFA6C24C1478C345C8" MD5_4 = "298775B04A166FF4B8FBD3609E716945" Info = "Detects Hidden Cobra SMB Worm / RAT" strings: $s0 = {6D737373636172647072762E6178} $s1 = {6E3472626872697138393076393D3032333D30312A2628542D30513332354A314E3B4C4B} $s2 = {72656468617440676D61696C2E636F6D} $s3 = {6D69737377616E673831303740676D61696C2E636F6D} $s4 = {534232755365435632564474} $s5 = {794159334D6559704275415756426341} $s6 = {705641325941774242347A41346167664B6232614F7A4259} $s7 = {AE8591916D586DE4F6FB8EE2F0BBF1F9} $s8 = {F96D5DD36D6D9A87DD6D506D6D6D516D} $s9 = {43616E6E6F74206372656174652072656D6F74652066696C652E} $s10 = {43616E6E6F74206F70656E2072656D6F74652066696C65} $s11 = {663D547D75128D85FCFEFFFF5056} $s12 = {663D547D75128D85FCFEFFFF5056E88C060000E9A9000000663D557D7512} $s13 = {663D567D750F8D85FCFEFFFF5056E891070000EB7C663D577D} $s14 = {3141327A3342347935433678374438773945307624465F754774487349724A71} $s15 = {393032356A6864686F333965686532} condition: ($s0) or ($s1) or ($s2) or ($s3) or ($s4 and $s5 and $s6) or ($s7 and $s8) or ($s9 and $s10 and $s11) or ($s12 and $s13) or ($s14 and $s15) }
rule Enfal_Generic { meta: author = "NCCIC trusted 3rd party" incident = "10135536" date = "2018-04-12" category = "hidden_cobra" family = "BRAMBUL,JOANAP" MD5_1 = "483B95B1498B615A1481345270BFF87D" MD5_2 = "4731CBAEE7ACA37B596E38690160A749" MD5_3 = "CD60FD107BAACCAFA6C24C1478C345C8" MD5_4 = "298775B04A166FF4B8FBD3609E716945" Info = "Detects Hidden Cobra SMB Worm / RAT" strings: $s0 = {6D737373636172647072762E6178} $s1 = {6E3472626872697138393076393D3032333D30312A2628542D30513332354A314E3B4C4B} $s2 = {72656468617440676D61696C2E636F6D} $s3 = {6D69737377616E673831303740676D61696C2E636F6D} $s4 = {534232755365435632564474} $s5 = {794159334D6559704275415756426341} $s6 = {705641325941774242347A41346167664B6232614F7A4259} $s7 = {AE8591916D586DE4F6FB8EE2F0BBF1F9} $s8 = {F96D5DD36D6D9A87DD6D506D6D6D516D} $s9 = {43616E6E6F74206372656174652072656D6F74652066696C652E} $s10 = {43616E6E6F74206F70656E2072656D6F74652066696C65} $s11 = {663D547D75128D85FCFEFFFF5056} $s12 = {663D547D75128D85FCFEFFFF5056E88C060000E9A9000000663D557D7512} $s13 = {663D567D750F8D85FCFEFFFF5056E891070000EB7C663D577D} $s14 = {3141327A3342347935433678374438773945307624465F754774487349724A71} $s15 = {393032356A6864686F333965686532} condition: ($s0) or ($s1) or ($s2) or ($s3) or ($s4 and $s5 and $s6) or ($s7 and $s8) or ($s9 and $s10 and $s11) or ($s12 and $s13) or ($s14 and $s15) }
ssdeep Matches
rule Enfal_Generic { meta: author = "NCCIC trusted 3rd party" incident = "10135536" date = "2018-04-12" category = "hidden_cobra" family = "BRAMBUL,JOANAP" MD5_1 = "483B95B1498B615A1481345270BFF87D" MD5_2 = "4731CBAEE7ACA37B596E38690160A749" MD5_3 = "CD60FD107BAACCAFA6C24C1478C345C8" MD5_4 = "298775B04A166FF4B8FBD3609E716945" Info = "Detects Hidden Cobra SMB Worm / RAT" strings: $s0 = {6D737373636172647072762E6178} $s1 = {6E3472626872697138393076393D3032333D30312A2628542D30513332354A314E3B4C4B} $s2 = {72656468617440676D61696C2E636F6D} $s3 = {6D69737377616E673831303740676D61696C2E636F6D} $s4 = {534232755365435632564474} $s5 = {794159334D6559704275415756426341} $s6 = {705641325941774242347A41346167664B6232614F7A4259} $s7 = {AE8591916D586DE4F6FB8EE2F0BBF1F9} $s8 = {F96D5DD36D6D9A87DD6D506D6D6D516D} $s9 = {43616E6E6F74206372656174652072656D6F74652066696C652E} $s10 = {43616E6E6F74206F70656E2072656D6F74652066696C65} $s11 = {663D547D75128D85FCFEFFFF5056} $s12 = {663D547D75128D85FCFEFFFF5056E88C060000E9A9000000663D557D7512} $s13 = {663D567D750F8D85FCFEFFFF5056E891070000EB7C663D577D} $s14 = {3141327A3342347935433678374438773945307624465F754774487349724A71} $s15 = {393032356A6864686F333965686532} condition: ($s0) or ($s1) or ($s2) or ($s3) or ($s4 and $s5 and $s6) or ($s7 and $s8) or ($s9 and $s10 and $s11) or ($s12 and $s13) or ($s14 and $s15) }
rule Enfal_Generic { meta: author = "NCCIC trusted 3rd party" incident = "10135536" date = "2018-04-12" category = "hidden_cobra" family = "BRAMBUL,JOANAP" MD5_1 = "483B95B1498B615A1481345270BFF87D" MD5_2 = "4731CBAEE7ACA37B596E38690160A749" MD5_3 = "CD60FD107BAACCAFA6C24C1478C345C8" MD5_4 = "298775B04A166FF4B8FBD3609E716945" Info = "Detects Hidden Cobra SMB Worm / RAT" strings: $s0 = {6D737373636172647072762E6178} $s1 = {6E3472626872697138393076393D3032333D30312A2628542D30513332354A314E3B4C4B} $s2 = {72656468617440676D61696C2E636F6D} $s3 = {6D69737377616E673831303740676D61696C2E636F6D} $s4 = {534232755365435632564474} $s5 = {794159334D6559704275415756426341} $s6 = {705641325941774242347A41346167664B6232614F7A4259} $s7 = {AE8591916D586DE4F6FB8EE2F0BBF1F9} $s8 = {F96D5DD36D6D9A87DD6D506D6D6D516D} $s9 = {43616E6E6F74206372656174652072656D6F74652066696C652E} $s10 = {43616E6E6F74206F70656E2072656D6F74652066696C65} $s11 = {663D547D75128D85FCFEFFFF5056} $s12 = {663D547D75128D85FCFEFFFF5056E88C060000E9A9000000663D557D7512} $s13 = {663D567D750F8D85FCFEFFFF5056E891070000EB7C663D577D} $s14 = {3141327A3342347935433678374438773945307624465F754774487349724A71} $s15 = {393032356A6864686F333965686532} condition: ($s0) or ($s1) or ($s2) or ($s3) or ($s4 and $s5 and $s6) or ($s7 and $s8) or ($s9 and $s10 and $s11) or ($s12 and $s13) or ($s14 and $s15) }
