Office (OLE) / .XLS malware analysis — malicious · 1e85f75e6fd28c89

MALICIOUS

Office (OLE) / .XLS

65.5 KB Created: 2020-04-22 07:21:33 Authoring application: Microsoft Excel

MD5: fdc51b1b690423dbfdd398842d743c0e SHA-1: 24dedf3f10f7a5ab7bdd9f8f0e7a909c841e0236 SHA-256: 1e85f75e6fd28c8976d7494aea9ebb9623d4dd021df516ffd20dec1dc4f37bc5

300 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The file is an XLS document containing VBA macros. Heuristics indicate the use of WScript.Shell and the Shell() function, suggesting the macros are intended to execute commands or download additional payloads. The ClamAV signature 'Xls.Dropper.Agent-7683222-0' further supports its role as a dropper. No specific network IOCs were extracted, but the presence of WScript.Shell and the dropper signature strongly indicate malicious intent.

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-7683222-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Dropper.Agent-7683222-0
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` `bf53a4fc7cc5a6ace7620b325b604b1c351e7fe353b377b60a0d6af08fbbf4aa`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1482 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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