Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 bd5d59ba881beee0…

MALICIOUS

Office (OOXML)

70.0 KB Created: 2021-07-28 13:23:45 UTC Authoring application: Microsoft Excel 16.0300
MD5: 53effd636678045a408a063db017d2ec SHA-1: cbbe07a3d0456da3df9191d8a667561cb819242b SHA-256: bd5d59ba881beee067dbfcfe7bf4bf81147d5f227a24300b022e9c7474f71e29
250 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample is an Excel document containing VBA macros that utilize WScript.Shell and URLDownloadToFile. The script's intent is to download a second-stage payload from the provided URL. The presence of these critical heuristics indicates a malicious intent to download and execute external content.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD
    URLDownloadToFile in VBA
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA project inside OOXML medium OOXML_VBA
    Document contains a VBA project — VBA macros present
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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://github.com/florentbr/SeleniumBasic/releases/download/v2.0.9.0/SeleniumBasic-2.0.9.0.*
    • https://developer.microsoft.com/en-us/microsoft-edge/tools/webdriver/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
1ee5a49c0a0c6a92906117f8ffa6aa99079b78cd19601004f3f4cda380d60014		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 14060 bytes
vbaProject_00.bin
10a0c52919138746c293e318ec96c6fd1d4564f9b3ecff7976bdc343b0a88e16		 vba-project OOXML VBA project: xl/vbaProject.bin 67584 bytes

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