Office (OLE) / .XLS malware analysis — malicious · 84c1d424a67b35ee

MALICIOUS

Office (OLE) / .XLS

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

MD5: 17a9d59c0c446044dab21104aea729b4 SHA-1: 0c8865540b1a3663cd12e28e211c5a2942c34427 SHA-256: 84c1d424a67b35ee39f07084a21329c89d809664b0bf9c8da5bd9e8fea3c9c2b

282 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1105 Ingress Tool Transfer

The file contains VBA macros, specifically triggering on Workbook_Open, which is a common technique for initial execution. The macro references the URLDownloadToFile API, indicating it is designed to download a secondary payload from one of the embedded URLs. The ClamAV detection and heuristic firings further support its malicious nature. The script's primary intent is to download and execute a second-stage payload from the provided URLs.

Heuristics 8

Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD

Reference to URLDownloadToFile API
ClamAV: Xls.Malware.Valyria-10029771-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Malware.Valyria-10029771-0
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
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://94.140.114.44/
- http://103.155.92.211/
- http://193.38.54.149/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `6ea0dcbce704cc9662a989ee429fec0894ed516bccab67b859e6a519d0cedde3`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3824 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 shell/COM execution token(s).

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