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

Static analysis result for SHA-256 0918d8db879b0ecb…

MALICIOUS

Office (OLE) / .XLS

331.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: b6c2588dc80d9a440cd5070d27ffedd2 SHA-1: 8c151374430a6ee4e7ab8c9529dd8888946421fd SHA-256: 0918d8db879b0ecb53e06802a33db65ed2b3d26cc2a4c7eb2a3b2b2a3b6c041b
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution T1105 Ingress Tool Transfer

The file contains Excel 4.0 macros that are configured to automatically execute upon opening. These macros utilize the RUN and CALL functions to execute code, including a call to ShellExecute, and attempt to download a payload from the URL `https://jpsteel.in/ds/261120.gif`. The macro logic appears to be designed to download and execute a second-stage payload, as indicated by the use of `RUN` and `CALL` functions with concatenated strings that likely form executable commands.

Heuristics 6

  • 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.
  • ClamAV: Doc.Downloader.Docusign0521-9864805-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Docusign0521-9864805-0
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • 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.
  • 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://jpsteel.in/ds/261120.gif
    • https://jpsteel.in/ds/261120.gif�

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
0d33d3f7accc92fdd60dbf912082de478929da664f047bbfbed4791982921d46		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 6676 bytes

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