Office (OLE) / .XLS malware analysis — malicious · 53a55d9370ca3596

MALICIOUS

Office (OLE) / .XLS

452.0 KB Created: 2020-10-15 00:29:24

MD5: 6c39926865c1402fbb33b16f31bb7b42 SHA-1: 3df80ba2ef08703b2ffecc5efff406815ff5cd16 SHA-256: 53a55d9370ca3596d51b4b22a9b1808ed8f60eedf8d11bc8b81b33d068028fad

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1059.003 Windows Command Shell

The Workbook_Open macro fires upon opening the XLS file, executing a PowerShell command. This command downloads a file from http://104.168.160.209/news/9410226.jpg and saves it as C:\Users\Public\Pictures\xvzwzam.exe, then executes the downloaded file. This indicates a downloader or droppper functionality.

Heuristics 7

Reference to PowerShell high SC_STR_POWERSHELL

Reference to PowerShell
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND

Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
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
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://104.168.160.209/news/9410226.jpg

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `78402978bc64bb0014ccbd60b2b643db308111cb9decf5248aa51eb205eb2bff`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1776 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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