Office (OLE) / .XLS malware analysis — malicious · dd913ff23bc3d60d

MALICIOUS

Office (OLE) / .XLS

83.0 KB Created: 2020-05-06 08:03:04 Authoring application: Microsoft Excel

MD5: b0324b05a4d8b78e8e4e4c7ab9f0dbcf SHA-1: 85b2c40040a0f13403b73cb0f9b45c30b050008d SHA-256: dd913ff23bc3d60dc451967e14ab7dd01a4cee9cb7a8c39c593ffe096513c913

300 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is an Excel file containing VBA macros. Heuristics indicate the presence of WScript.Shell and Shell() calls, suggesting the macros are designed to execute arbitrary commands. The ClamAV detection 'Doc.Dropper.Agent-7770522-0' further confirms its malicious nature as a dropper. The embedded artifact 'macros.bas' is likely the source of this malicious behavior.

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: Doc.Dropper.Agent-7770522-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.Agent-7770522-0
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` `459e9f29407efe5b7a7c4c3b6e1a13dbee0b6a79c1169d0eff4860078e695adc`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1192 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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