Office (OLE) / .XLS malware analysis — malicious · ae2c52f5968abfb5

MALICIOUS

Office (OLE) / .XLS

76.0 KB Created: 2020-04-29 06:58:05 Authoring application: Microsoft Excel

MD5: b76cd39162664e4d393fa91a98f28aca SHA-1: 9a92acfab4ed735bd296a685526731e47e7e85e6 SHA-256: ae2c52f5968abfb5b786d2d7227d726f5d19808c5611a813e90b2ca484e2414b

300 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is an XLS document containing VBA macros. Heuristics indicate the use of WScript.Shell and the Shell() function, which are commonly used to execute arbitrary commands or download and run additional malware. The ClamAV detection name 'Xls.Dropper.Agent-7725356-0' further supports its role as a dropper. No specific family could be identified, but the techniques suggest a downloader or initial access stage.

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-7725356-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Dropper.Agent-7725356-0
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` `1c92a3b2a84f12dbc58743b4323bf244c6d534b482c644ecf22389d24fb62d36`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1250 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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