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

Static analysis result for SHA-256 2ca7bbf206d26550…

MALICIOUS

Office (OLE) / .DOC

521.5 KB Created: 2021-09-08 12:01:00
MD5: 09a2872294d089c5b78d5bf4baea7ef4 SHA-1: ec41cf762f4f679aee6ec63a9a43457cfb23f204 SHA-256: 2ca7bbf206d265509eedc9a64c69385edd8e4b63cea4115bfb7b137765ec9262
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample is a malicious DOC file containing a VBA macro that executes upon opening the document. The macro attempts to copy content, potentially to be used in a subsequent stage, and then attempts to open a password-protected document named 'reform.doc' with the password '2281337'. The presence of the Document_Open macro and the attempt to open a password-protected file suggest a social engineering lure to bypass security measures or trick the user into further interaction.

Heuristics 5

  • Office EPRINT stream contains EMF object high CVE related OLE_EPRINT_EMF_OBJECT
    OLE ObjectPool contains an EPRINT stream with EMF data. This is rare in normal documents and is CVE-2007-3893/MS07-046-family evidence when paired with Office exploit payload anomalies, but the malformed EMF record is not proven by this rule alone.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Suspicious extracted artifact info 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.
  • 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.microsoft.com/office/2006/encryption
    • http://schemas.microsoft.com/office/2006/keyEncryptor/password
    • http://schemas.microsoft.com/office/2006/keyEncryptor/certificate
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
0a06014613143cbe2a99a6668797fa75d777745e4cb0cc3d3e516c00f52b7709
vba-macro oletools.olevba.extract_macros (decoded VBA source) 2886 bytes
ole10native_00.bin
c14c2950f2bf2b0b9f45bae327f4a499e0e0703355490ddb15278dfc2f446340
ole-package OLE Ole10Native stream: ObjectPool/_1692582292/Ole10Native 340801 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.