Office (OLE) / .XLS malware analysis — malicious · b65e9be3fa98ae32

MALICIOUS

Office (OLE) / .XLS

452.0 KB Created: 2020-10-05 07:39:48

MD5: f4068caac80741bef1d10c4d1d325356 SHA-1: d489e731bcc3e83d2a7144885d70a4f11e359112 SHA-256: b65e9be3fa98ae321646a817f559e8f213b7b3e40ab8b68c46a07b153abb48d0

140 Risk Score

Malware Insights

MITRE ATT&CK

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

The Workbook_Open macro is configured to execute a PowerShell command. This command downloads a file from 'http://45.66.250.101/iT/607188.jpg' and saves it as 'C:\Users\Public\Documents\eydbdiir.exe', then executes the saved file. This indicates the macro's intent is to download and run a second-stage payload.

Heuristics 4

Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
Suspicious extracted artifact high 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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `fde7a034832762ebb5caadf88f9a5361838f6970157c9f4e7f44f68fbbb3e88e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1259 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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