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

Static analysis result for SHA-256 469b70d30f5762bc…

MALICIOUS

Office (OLE) / .DOC

29.0 KB Created: 2021-08-30 13:41:00 Authoring application: Microsoft Office Word
MD5: b60b59d191a6ec82bcd34bbf3798777e SHA-1: 6b57c8790e0f11d4498d8e72cd297a9140975c24 SHA-256: 469b70d30f5762bced3abbf5aa221b64f9d298b70015d26476cad8c404ec96b5
482 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1059.003 Windows Command Shell

The AutoOpen macro within the VBA script constructs a command to download a file from 'http://orange.com' to the %TEMP% directory using PowerShell, and then attempts to execute it. This is further supported by multiple high-severity heuristics related to VBA, PowerShell, and cmd.exe invocation. The script's intent is to download and execute a second-stage payload.

Heuristics 12

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • PowerShell reference in VBA critical OLE_VBA_PS
    PowerShell reference in VBA
  • ClamAV: Doc.Downloader.Pwshell-10001336-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Pwshell-10001336-0
  • Suspicious cmd.exe invocation with execution flag high SC_STR_CMD
    Suspicious cmd.exe invocation with execution flag
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
  • 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.
  • 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.
  • 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 http://schemas.openxmlformats.org/drawingml/2006/main
    • http://orange.com

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
161c77ac7cf4e64db456b89c594aeb1fae671823a2ec4e62c894a72d71835cbb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 564 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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