Office (OLE) / .XLS malware analysis — malicious · ec9f6a70899278d8

MALICIOUS

Office (OLE) / .XLS

61.0 KB Created: 2020-03-18 09:20:54 Authoring application: Microsoft Excel

MD5: d9a7fb184f4a5144578ba478ea4ff2f9 SHA-1: cc8aee82cd9275d29855b514f4f7e36ca2917d5f SHA-256: ec9f6a70899278d8eecd7c501971b8381b9ef9affae659521f1e5009be15abc7

300 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell

The file is an Excel spreadsheet containing VBA macros. Heuristics indicate the use of WScript.Shell and Shell() calls, suggesting the script attempts to execute commands or download further payloads. The ClamAV detection name 'Xls.Dropper.Agent-7632781-0' further supports its nature as a dropper. The document body text is nonsensical and appears to be filler, not directly related to the malicious functionality.

Heuristics 7

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
WScript.Shell usage critical OLE_VBA_WSCRIPT

WScript.Shell usage
ClamAV: Xls.Dropper.Agent-7632781-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Dropper.Agent-7632781-0
Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `a36866386f036d78c52aa03e9ca045a2524106675d36f9ef8770442d7343cc51`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1638 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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