Office (OLE) / .XLS malware analysis — malicious · 7990a62fbdfd918f

MALICIOUS

Office (OLE) / .XLS

133.5 KB Created: 2020-11-20 17:59:00 Authoring application: Microsoft Excel

MD5: 18e4fce8536a37b3b4598393246da02c SHA-1: e2dde9ecbdbaba8b658caf396deb8649ac87eff2 SHA-256: 7990a62fbdfd918fa192e271d5b7af49312a7136c9da62ba4bd184ec3e416011

140 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is an Excel 4.0 macro-enabled spreadsheet. The VBA auto_open macro triggers the execution of an XLM macro. The XLM macro constructs and executes a PowerShell command. This command downloads a file named 'gl.exe' from 'https://cutt.ly/0hIRbFl' to the temporary directory and then executes it. The ClamAV detection also confirms the malicious nature of the file.

Heuristics 4

ClamAV: Xls.Malware.Abracadabra-10031695-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Malware.Abracadabra-10031695-0
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN

Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `92296bf71dcb2393b8effe3a4cf1491fb76aaebc6d07af2e2e7e397f6a7bf362`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	1781 bytes
`macros.bas` `cd570610748f1d9f3b3da8aecc12295e1dff4beebd51624b3e1fafca26bf9c59`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1016 bytes

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