Office (OLE) / .XLS malware analysis — malicious · dfbc696627e5156e

MALICIOUS

Office (OLE) / .XLS

59.0 KB Created: 2020-04-07 09:48:49 Authoring application: Microsoft Excel

MD5: 8e8e9fa5aa67b63367dbd5fe2626cf11 SHA-1: 4903c3901ac51466633e826bee8b57f803231551 SHA-256: dfbc696627e5156ec068adab59dd2b90806c20c082d2b7de16732a44dbfa241a

300 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is an Excel spreadsheet containing VBA macros. Heuristics indicate the use of WScript.Shell and the Shell() function, suggesting the macros are designed to execute arbitrary commands or download additional payloads. The ClamAV detection name 'Xls.Dropper.Agent-7659477-0' further supports its nature as a dropper. No specific family could be identified, but the techniques used are common for initial access via macro-enabled documents.

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-7659477-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Dropper.Agent-7659477-0
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` `c55c640dea6229d89e3d05372ba4b930a9ff67c0899325f8b604a9ef9cef4251`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1711 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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