Office (OLE) / .XLS malware analysis — malicious · a7bed76e3e3a297b

MALICIOUS

Office (OLE) / .XLS

327.0 KB Created: 2020-10-18 23:46:31

MD5: 1410232860344c31ec9196a17ad6189d SHA-1: ccd2fecf1e667866e0f8384f6ad768c5088c7432 SHA-256: a7bed76e3e3a297b0dd90fc1ab64bd6799c3dba188934f995b1a210781657280

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 VBA macro that executes a PowerShell command. This command downloads a file from http://weeshoppi.com/wp-includes/ID3/g1/97103.jpg and saves it as C:\Users\Public\Documents\jbnsdwj.exe, then executes the downloaded file. This indicates a downloader or dropper 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://weeshoppi.com/wp-includes/ID3/g1/97103.jpg

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `9066f47720918b3be5f57fed72c8c8a603a6d44133edd131cd2b63c76508ade9`	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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