Office (OLE) / .XLS malware analysis — malicious · 824db89a974de2fd

MALICIOUS

Office (OLE) / .XLS

377.5 KB Created: 2020-10-22 22:03:18

MD5: b51e3c4895a53eed7b974c5bf9917190 SHA-1: bd1210ab8ad851ad78de72289efaaa8a7bf257da SHA-256: 824db89a974de2fdd2bab3b28897ebe67bc4efc7cd2dea9245ac4317c35cb909

220 Risk Score

Malware Insights

MITRE ATT&CK

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

The Workbook_Open macro triggers a PowerShell command that downloads a file from http://104.168.160.209/N8/3601997.jpg and saves it as C:\Users\Public\Documents\iqvrtgb.exe, then executes it. This indicates a downloader or droppper functionality, aiming to fetch and run a second-stage payload. The presence of a Workbook_Open macro and a CreateObject call are common indicators for macro-based malware.

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/N8/3601997.jpg

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `8423b75e70f268fdf9654797b9aa0ae66f5fcf545a0c976cdf7f94ecac1ba632`	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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