MALICIOUS — Inv.18053.xlsb

MALICIOUS — Inv.18053.xlsb is a office-ooxml sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (93/100). 4 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

• SHA-256: 028d2ec02fcc1ea0c3afeaf1e0f612e595ae852d2533fa15b70535a35cb1ec32
• SHA-1: 64ea5bd3b1c5e9b0a3304f93d80bcf18e613196b
• MD5: 440c4e59e8bb1600bf2ce5eb48e6d57a
• ssdeep: 1536:1Wo3yETUs3S6PqrE3gpMokPF58Ik4kosQFVvSuM4yvWvm:woC03eEwFkd58IXkOFVvM4yOvm
• TLSH: T10436F24DA46C0A17F7700A7198AD3CECC45D7D2580AD6FD2103DE4D26AB614BE23388A
• Submitted as: Inv.18053.xlsb
• File type: office-ooxml · Size: 63459 bytes
• Verdict: malicious (93/100)

Detections (4 of 55 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• Microsoft Defender: TrojanDownloader:O97M/Dridex.RAI!MTB
• Emsisoft (Emergency Kit): Trojan.Agent.FRPA
• Kaspersky (KVRT): HEUR:Trojan.Script.Generic

MITRE ATT&CK

• T1105

Why this verdict

The malicious score of 93/100 is the fusion of 7 weighted signals:

• Microsoft Defender flagged TrojanDownloader:O97M/Dridex.RAI!MTB (rule TrojanDownloader:O97M/Dridex.RAI!MTB) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Trojan.Agent.FRPA (rule Trojan.Agent.FRPA) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged HEUR:Trojan.Script.Generic (rule HEUR:Trojan.Script.Generic) - engine signal, weight 0.55, confidence 0.85
• Document contains macros/active content: xlm-macro - static signal, weight 0.35, confidence 0.75
• MalwareAnalyser heuristics (entropy/packer) flagged high-entropy-blob (rule high-entropy-blob) - engine signal, weight 0.35, confidence 0.70
• Packing/obfuscation: high-entropy-blob - static signal, weight 0.25, confidence 0.55
• Contacted 13 external host(s) at runtime - network signal, weight 0.12, confidence 0.55

Dynamic analysis (windows)

1382 behavior events · 0 ATT&CK techniques · 22 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• 250.255.255.239.in-addr.arpa
• ntp.ubuntu.com
• desktop-hsgcbep._dosvc._tcp.local
• desktop-hsgcbep(1)._dosvc._tcp.local
• desktop-hsgcbep(2)._dosvc._tcp.local
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• 23.40.52.121
• 23.11.37.157
• 20.190.167.19
• 20.190.167.66
• 150.171.22.17
• 23.33.238.178
• 52.110.12.51 AU · Sydney · AS8075 Microsoft Corporation
• 4.230.171.124 KR · Seoul · AS8075 Microsoft Corporation

Dropped files

• C:\Users\analyst\AppData\Roaming\LibreOffice\4\user\extensions\buildid - 309397d13bd251edc2329238d5391d5113073b5550a8a795990e4f8f5f3e58e7
• root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7
• root_.cache_mesa_shader_cache_index - 6d0552c4e71fe85e6cdc7e7745882ea91b382fbc56448f2e9e1c2d77dcf67d81
• root_.config_libreoffice_4_.lock - 3b3f14eaa6a7251d60b62b70ceb87111769714fd25a52dde694db53129c4840a
• root_.config_libreoffice_4_user_GraphicsRenderTests.log - ca66014b962c5f87639d09e17a2dc07c7d1657c2f71a392b1d9bb67cd3a511d9
• root_.config_libreoffice_4_user_autotext_mytexts.bau - 951c8adf2ef8d3edeadb03b0c4374a2d75cf5fed945eeff259d33aa2e77acf7f
• root_.config_libreoffice_4_user_basic_Standard_Module1.xba - b434faf21386064e2e81af758f307ae8bea72c0cb6c8510d55b1bc1bb38f8612
• root_.config_libreoffice_4_user_basic_Standard_dialog.xlb - 85c83411f1285a0d0d9b511a7ea7dd06d5ac9b97f90d286adaca084212e3fe80
• root_.config_libreoffice_4_user_basic_Standard_script.xlb - 80cb10b100053f6e0b26bb009a2b8ccbdedb761901680500a4736f7afbf1f959
• root_.config_libreoffice_4_user_basic_dialog.xlc - 5b72c4cc5130eccab44cbfb91270befaeaf8ee7ab97cf205ee2abb582fa4a9e5
• root_.config_libreoffice_4_user_config_autotbl.fmt - 713229151490c66f043cb4865147c97458b4f33e4eb5f2bb4133c58cbe77041e
• root_.config_libreoffice_4_user_database_biblio.odb - c3dd4e9008be33cdede3abf822e9b748a201704adf95aad92ab894dd98b3fe85
• root_.config_libreoffice_4_user_database_biblio_biblio.dbf - aefc2bb614c2e307870405e0fd72f4a22cf794c396a73ce0551f18a478e80ed2
• root_.config_libreoffice_4_user_database_biblio_biblio.dbt - 3ab142231d8075fdd02c95a691ddce590e0f81450744cb87ca610fd06d75cac1
• root_.config_libreoffice_4_user_extensions_buildid - 4e80829cd1c13534fecb420763830c6a6fe6d9a8a463cefc817071e313bdc7bc

Embedded URLs

• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl

Embedded IP addresses

• 20.42.179.192
• 172.215.188.225
• 48.211.4.16
• 20.42.65.94
• 4.247.188.224
• 4.247.188.233
• 20.50.201.195
• 52.110.12.51
• 4.230.171.124
• 135.232.92.97
• 135.233.95.144
• 4.150.223.107
• 20.247.185.124

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report