Office (OLE) / .XLS malware analysis — malicious · 97bb6f30d2fe5546

MALICIOUS

Office (OLE) / .XLS

66.5 KB Created: 2020-04-21 08:14:48 Authoring application: Microsoft Excel

MD5: a243d9f801c9004299711a96ecdac4fc SHA-1: c2c873baf147aa74843382a1e2dae33659bd49d5 SHA-256: 97bb6f30d2fe5546a810da356e41652d1bccfe2130cf77dec36b9ee17c19259d

300 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is an XLS file containing VBA macros. Critical heuristics indicate the use of Shell() and WScript.Shell, suggesting the execution of external commands or scripts. The ClamAV detection name 'Xls.Dropper.Agent-7682890-0' further supports its role as a dropper. The document body content is heavily corrupted and does not provide clear user-facing lures.

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-7682890-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Dropper.Agent-7682890-0
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` `ae83d32655af6116594beb681a07a4f99d1f404eeb97396cd305f2fce83b2928`	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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