Xls.Dropper.Agent-7641967-0 — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 d0566de0cdf222b1…

MALICIOUS

Office (OLE) / .DOC

91.5 KB Created: 2020-03-24 18:47:13 Authoring application: Microsoft Excel
MD5: 24fed9dd10be2ef2872e0c29d68bb017 SHA-1: cbec65c128f2b12330fa99868225f989b24e39e3 SHA-256: d0566de0cdf222b1b8f3a818d24d12d266ad3709c0bfb5723b70e6b9b44f7324
220 Risk Score

Malware Insights

Xls.Dropper.Agent-7641967-0 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1059.001 PowerShell T1059.003 Windows Command Shell T1059 Command and Scripting Interpreter

The presence of Excel 4.0 macros, specifically an Auto_Open routine utilizing dangerous functions like RUN, indicates a malicious intent. The macro references ShellExecute and URLDownloadToFile APIs, strongly suggesting it downloads and executes a second-stage payload from the embedded URLs. The ClamAV detection name 'Xls.Dropper.Agent-7641967-0' further supports this classification.

Heuristics 6

  • Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD
    Reference to URLDownloadToFile API
  • ClamAV: Xls.Dropper.Agent-7641967-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Dropper.Agent-7641967-0
  • 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.
  • 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://zonicseller.com/lns.exe~
    • http://zonicseller.com/lns.exe
    • http://zonicseller.com/lns.ex

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
aba668409be72a46cc2fbca4ce38dc373951c91dc07211d58670beb8c496dfe2		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 22262 bytes

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