Sagent — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 0c792afd1ade4da6…

MALICIOUS

Office (OLE) / .XLS

203.5 KB Created: 2020-10-29 22:27:27
MD5: 6de1e094bbbcafdd787bf7d97846cec8 SHA-1: 28433d68a6bece7840b24cfdda279d621e8ee497 SHA-256: 0c792afd1ade4da6349e263d4cf5f6504cd57f39393220227323def2caddb130
202 Risk Score

Malware Insights

Sagent · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains VBA macros that leverage CreateObject to execute a PowerShell command. This command downloads a second-stage executable from the URL http://185.183.98.246/150/DL-13011.jpg and saves it as C:\Users\Public\Documents\tdmwojjam.exe, which is then executed. This behavior is characteristic of a downloader malware.

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://185.183.98.246/150/DL-13011.jpg

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7bf863112363e79209b965e8551e4291d65b98db7945bea8d73dc913787aa1f2
vba-macro oletools.olevba.extract_macros (decoded VBA source) 1310 bytes