Office (OLE) / .XLS malware analysis — malicious · b50ecc45d524775f

MALICIOUS

Office (OLE) / .XLS

327.0 KB Created: 2020-10-19 00:37:54

MD5: 7d05030d0a4461cf586fa38b58c5c35f SHA-1: af5aa2884d54ec4aac2dcfd761ec76b71d86331e SHA-256: b50ecc45d524775f5d55a0cb0a6438142f10c8c644050bad6f7035b6453aac89

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains a Workbook_Open macro that executes a PowerShell command. This command downloads a file from http://weeshoppi.com/wp-includes/ID3/g1/741000.jpg and saves it as C:\Users\Public\Documents\lvmisap.exe, then executes it. This indicates a downloader functionality, aiming to fetch and run a second-stage payload.

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://weeshoppi.com/wp-includes/ID3/g1/741000.jpg

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `51eccd7ecfe5379837b38ddf30a1374cdb9b6c81d8d06368c6d41473e265732d`	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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