Office (OLE) / .XLSX malware analysis — malicious · dd550274d9b26018

MALICIOUS

Office (OLE) / .XLSX

64.0 KB Created: 2021-08-17 12:24:08 Authoring application: Microsoft Excel

MD5: 51e174b6858cc3e25cf79e0465c5192f SHA-1: 89f442b98b423932b8bfeef10294bb338f8906f0 SHA-256: dd550274d9b2601869c8f9d76a51bf6463967ca79a178e52d395964ca9eebaa0

120 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample is an Excel spreadsheet containing VBA macros. The 'SE_ENABLE_LURE' heuristic indicates the document likely prompts the user to enable macros. The 'Auto_Open' macro uses the ScriptControl object to execute code embedded within the document's 'Subject' and 'Comments' properties. This technique is commonly used to download and execute a second-stage payload, making the document a downloader. The CVE-2015-0097 heuristic suggests a specific vulnerability might be leveraged.

Heuristics 4

MSScriptControl.ScriptControl — CVE-2015-0097 high CVE likely CVE_2015_0097_SC

MSScriptControl.ScriptControl — CVE-2015-0097
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `0278d22c57457c6ea65486c5e13f4b06bae683e9ef9fa360c905d1932da96848`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	862 bytes

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