Office (OLE) / .DOC malware analysis — malicious · 975c1ab8faa66f9f

MALICIOUS

Office (OLE) / .DOC

112.0 KB Created: 2020-03-31 17:45:14 Authoring application: Microsoft Excel

MD5: a8bf81dea84a669362a59ecc57b4130d SHA-1: 0329195b0970568016cab7c372530bfc9a70d417 SHA-256: 975c1ab8faa66f9fca5bc9d26fe63f52806b13041569cb1a4b52fecb5a314ab8

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample is a malicious Excel document containing Excel 4.0 macros. The heuristics indicate the use of ShellExecute and URLDownloadToFile, suggesting the macro attempts to download and execute a secondary payload. The presence of Auto_Open with dangerous functions like RUN further supports this. The extracted URLs are likely sources for this payload.

Heuristics 6

Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD

Reference to URLDownloadToFile API
Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
XLM Auto_Open with dangerous formula APIs high OLE_XLM_DANGEROUS_FN

Excel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN

Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
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.
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://addledsteamb.xyz/BAYgODA0NUQ2OEY1RTA2ODg4RDhCQzlEQzRBRUU3QTA5OUI=
- https://addledsteamb.xyz/BAYg~

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `bdfb9cb9a6187ae3e5d9a99c893d140c4ab14cfc4d626272ac434b66146f7bad`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	35232 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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