Sagent — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 0540d80f7c41cb34…

MALICIOUS

Office (OLE) / .XLS

452.0 KB Created: 2020-10-27 22:22:50
MD5: 4f0a3b4046226936216bfc06d9ec32c8 SHA-1: 3d26c25007f27d4d6fbae46fc6e52a833c056ab2 SHA-256: 0540d80f7c41cb3459842b494f7f4fe152b9e9013245514f64e086bf0ace200a
202 Risk Score

Malware Insights

Sagent · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains VBA macros that leverage CreateObject to execute a PowerShell command. This command downloads a file from http://79.141.165.173/DX/FD-6159.jpg and saves it as C:\Users\Public\sbebghqwa.exe, then executes it. This indicates a downloader or dropper functionality, consistent with the Sagent family.

Heuristics 6

  • ClamAV: Xls.Malware.Sagent-10035294-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Malware.Sagent-10035294-0
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
  • 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://79.141.165.173/DX/FD-6159.jpg

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2617013a75ca1fb84771d1920b105137cf9860b8cce5a1da8d9258fdad6eb074
vba-macro oletools.olevba.extract_macros (decoded VBA source) 1310 bytes