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

Static analysis result for SHA-256 9e44ff1390f565a5…

MALICIOUS

Office (OLE) / .XLSX

31.5 KB Created: 2022-06-08 06:50:44 Authoring application: Microsoft Excel First seen: 2022-06-09
MD5: 019f18de5ee7692efdc9fd6a02708f47 SHA-1: 28a10465c24c8b52c0d1efc9475f5d3163ed524e SHA-256: 9e44ff1390f565a5b8f7cd405c1fd1cb293d5e3a1ead02693cf8f7c26131bda6
342 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.007 JavaScript T1204.002 Malicious File T1059.003 Windows Command Shell

The VBA macro within the Excel file utilizes WScript.Shell to construct and execute a command. This command involves mshta.exe to download and run a JavaScript file from the URL http://www.asianexportglass.shop/p/50.html. The script writes this JavaScript to C:\Users\Public\zaim.js and then executes it. This indicates a downloader or dropper functionality.

Heuristics 9

  • Office EPRINT stream contains EMF object high CVE related OLE_EPRINT_EMF_OBJECT
    OLE ObjectPool contains an EPRINT stream with EMF data. This is rare in normal documents and is CVE-2007-3893/MS07-046-family evidence when paired with Office exploit payload anomalies, but the malformed EMF record is not proven by this rule alone.
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • ClamAV: Xls.Malware.Valyria-10002968-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Malware.Valyria-10002968-0
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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 http://www.asianexportglass.shop/p/50.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4e77cd9b2a4763007e16f41f005fc5d8d0b007d267cf82dfe9a492cd27bbd624		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1273 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 shell/COM execution token(s).

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