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

Static analysis result for SHA-256 5607c606b518b920…

MALICIOUS

Office (OLE) / .DOC

69.5 KB Created: 2024-11-19 09:37:00 Authoring application: Microsoft Office Word
MD5: 2d9d347f7fa64d7b91025e2a12bc11a3 SHA-1: 29bbc0501fb019c55c57a280d89c18fb74af1777 SHA-256: 5607c606b518b92077a4652948b79835b787177836af61f3cd530eea7e63254a
280 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open macro, which is designed to execute automatically. This macro utilizes a Shell() call and references PowerShell, indicating an attempt to download and execute a secondary payload from the URL https://alexanu.com/vnvnomcry.exe. The presence of these elements strongly suggests a malicious downloader.

Heuristics 8

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Suspicious extracted artifact high 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.
  • 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 https://alexanu.com/vnvnomcry.exe
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
14c2502c2838acd95bc4393926e3dc213976e0507ad20223002aec0f5b235669
vba-macro oletools.olevba.extract_macros (decoded VBA source) 737 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.