MALICIOUS — culpt.rtf

MALICIOUS — culpt.rtf is a rtf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (95/100), attributed to the RTFObfustream family. 4 of 51 detection engines flagged it.

Identification

SHA-256: 07b7ae8d56a72160eada35c12e625c1540dab0c2a2880c9199b3ebe2b038e360
SHA-1: 37d394e787406ccb55d3bc7e32ca4c4fa6769d40
MD5: 6f490e61a226bbace3d34979bfa4c4a3
ssdeep: 6144:reNxnzV7Iplfrr4RQr6FCaGWGRuQF2IplaJaOPWJ3A:rCzV7IpljsRQr6FoRuQF2YlaJaOuJ3A
TLSH: T19A6197AD843B9CAC7513FBDA731D56380BAA8613136B3A86511025430ECA61FFB8157F
Submitted as: culpt.rtf
File type: rtf · Size: 3928550 bytes
Verdict: malicious (95/100) · Family: RTFObfustream

Detections (4 of 51 engines)

Microsoft Defender: Trojan:Win32/Leonem!rfn
Emsisoft (Emergency Kit): GT:VB.ObfDldr.32.D51766DE
Trellix Stinger (McAfee): RTFObfustream.c!6F490E61A226
Kaspersky (KVRT): HEUR:Trojan.Script.Generic

Why this verdict

The malicious score of 95/100 is the fusion of 8 weighted signals:

Microsoft Defender flagged Trojan:Win32/Leonem!rfn (rule Trojan:Win32/Leonem!rfn) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged GT:VB.ObfDldr.32.D51766DE (rule GT:VB.ObfDldr.32.D51766DE) - engine signal, weight 0.55, confidence 0.85
Trellix Stinger (McAfee) flagged RTFObfustream.c!6F490E61A226 (rule RTFObfustream.c!6F490E61A226) - 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
Embedded network infrastructure: 3.4.1.8, 7.3.2.9 - static signal, weight 0.35, confidence 0.60
Document active content: ole-objdata, obj-autoupdate, embedded-ole, embedded-ole-compound - static signal, weight 0.30, confidence 0.60
Contacted 1 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
Extracted generic config (2 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

1158 behavior events · 0 ATT&CK techniques · 22 dropped files.

Dropped files

root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7
root_.cache_mesa_shader_cache_index - 6d0552c4e71fe85e6cdc7e7745882ea91b382fbc56448f2e9e1c2d77dcf67d81
root_.config_libreoffice_4_.lock - 1c76ec9f49c688b920baf1a4ac33ad4bdfef270465721a52607cdfa7d955cd33
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
root_.config_libreoffice_4_user_extensions_bundled_lastsynchronized - 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

Embedded IP addresses

3.4.1.8
7.3.2.9

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report