Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 c788a7e6d4c74e70…

MALICIOUS

Office (OLE) / .XLS

35.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: c3afba0e799cecf164b4e90d045ab468 SHA-1: b91c79b2310949d38df624f9aa912c2cd53291a6 SHA-256: c788a7e6d4c74e709845a01627e3cd7bb596dabbafb75aaf3929315e4b58e3e1
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1204.002 Malicious File

The presence of an Excel 4.0 macro sheet (OLE_XLM_AUTOOPEN) and a lure instructing the user to enable macros (SE_ENABLE_LURE) strongly suggests a malicious document. The impersonation of a document signing service (SE_DOCUSIGN_LURE) is a common social engineering tactic. The embedded URLs likely point to the download location of a second-stage payload, which would be executed using the XLM macro. The extracted document body text contains fragments that appear to be related to executing a file from a specific path.

Heuristics 4

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Document signing service impersonation lure medium SE_DOCUSIGN_LURE
    Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
  • Embedded URL info EMBEDDED_URL
    One 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 https://onlinecompaniehouse.com/sorvD2�
    • https://onlinecompaniehouse.com/sorv.png

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
55c826cfb5063d823dac83545b0d2f09645312e41335e7497470581e3cd3d9af
xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 2097 bytes