Office (OLE) / .XLS malware analysis — malicious · 310121955d11b8c4

MALICIOUS

Office (OLE) / .XLS

126.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel

MD5: 771470585379f22a6c76e4ff08728512 SHA-1: 996717d117629fb99f697129c98dab92eac0eca2 SHA-256: 310121955d11b8c4ecb14a5373f2dda35ddaac230db890b6e306302e22b11ffe

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1105 Ingress Tool Transfer

The file contains VBA macros, including an Auto_Open subroutine, which is a common technique for executing malicious code upon opening a document. The script references the URLDownloadToFile API, indicating its intent to download a payload from one of the embedded URLs. The ClamAV detection name 'Doc.Downloader.Docusign112100-9908075-0' further supports this downloader functionality. The script attempts to manipulate sheet visibility and cell content, likely as part of its execution or obfuscation process.

Heuristics 7

Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD

Reference to URLDownloadToFile API
ClamAV: Doc.Downloader.Docusign112100-9908075-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Docusign112100-9908075-0
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close macro
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.
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://188.165.62.15/
- http://45.84.0.123/[
- http://45.138.172.22/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `57d45725af4886e8d1a842c345743833b98ddd98ba9d6745c5619e1562904cb0`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3258 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 shell/COM execution token(s).

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