Xls.Trojan.Divi-2 — Office (OLE) malware analysis

Static analysis result for SHA-256 81483e208839d973…

MALICIOUS

Office (OLE)

161.0 KB
MD5: ad8ace9a00c93992c9f2d857c1d53c62 SHA-1: 2c65dadf1e02aeaa5e52553cf6b238afffed5491 SHA-256: 81483e208839d97309276806e1527977c9a35a996dc72e44808fef578afa459e
260 Risk Score

Malware Insights

Xls.Trojan.Divi-2 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

The file is identified as malicious by ClamAV with the signature Xls.Trojan.Divi-2. It contains VBA macros, including Workbook_Open, Auto_Open, and Auto_Close, indicating an attempt to execute code upon opening or closing the workbook. The VBA script attempts to write to the registry key 'Software\Microsoft\Office\8.0\Excel\Microsoft Excel' to establish persistence.

Heuristics 6

  • ClamAV: Xls.Trojan.Divi-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Divi-2
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
139ec57a3ebb8775cf6d25647c49fa0113ef3e086f8119db30b1f74cbd601e01		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 43744 bytes
Detection
ClamAV: Xls.Trojan.Divi-2
Obfuscation or payload: unlikely

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