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

Static analysis result for SHA-256 a39984994f9c40fb…

MALICIOUS

Office (OLE) / .XLS

76.0 KB Created: 2020-04-29 06:58:05 Authoring application: Microsoft Excel
MD5: d80a29f5d58cba8040a96dcdc921625d SHA-1: e3007c46b238135142925123df0202fe220ac722 SHA-256: a39984994f9c40fbdd7dc6239b0dcca3c0110129dfcc6a36fe7253fa9ae9773d
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic

The presence of critical heuristics like OLE_VBA_SHELL and OLE_VBA_WSCRIPT indicates that the VBA macros within this XLS file are designed to execute commands using WScript.Shell. This is a common technique for downloading and executing further malicious payloads. The extracted artifact 'macros.bas' further supports the presence of VBA macros. The document body content is obfuscated and does not provide clear user-facing lures.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
1c92a3b2a84f12dbc58743b4323bf244c6d534b482c644ecf22389d24fb62d36		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1250 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s).

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