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

Static analysis result for SHA-256 dcb7999b5017cb39…

MALICIOUS

Office (OLE) / .XLS

367.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 64d4070bb251f6e8ef7863f4f9fd7f14 SHA-1: cc178dfdc3d7e4069017d19640b97d5ddd84e22f SHA-256: dcb7999b5017cb399f40080863b28e91d257851c93a2b5bfe5f90ab0a5d44121
102 Risk Score

Malware Insights

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

The file contains an Excel 4.0 macro sheet with an Auto_Open defined name, indicating automatic execution upon opening. The presence of an 'enable lure' heuristic suggests the document prompts the user to enable macros or content. The extracted URLs are likely used to download a second-stage payload. Confidence is moderate due to the lack of script content to confirm the exact payload delivery mechanism.

Heuristics 4

  • 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.
  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.
    URL https://smartpalakatva.com/edQsUZOLlE/th.html
    • https://pilstlcommodities.com/Ov4FlB3lpy/th.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
e61304013e31eadd8bf35fc5d3e6cbadd61463966f2a2d09ae24f65eb0ee3106
xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 8349 bytes