Office (OLE) / .XLS malware analysis — malicious · 4c60bb36a8789392

MALICIOUS

Office (OLE) / .XLS

73.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel First seen: 2021-10-12

MD5: be0def7d91c8f70c433e5b0a9ad3b64e SHA-1: 11e3d697fd25f1c2fc1d35aaf3af70e23dbf9e3c SHA-256: 4c60bb36a8789392f4d2c953f08dac0a0056e0c493a0584481ed3fd4a946cad7

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The Workbook_Open macro executes a PowerShell command to download a second-stage executable from 'http://greenpayindia.com/grren/ConsoleApp17.exe' and save it as 'C:\Users\Public\Documents\callscore.exe'. The macro also writes a command to 'C:\Users\Public\Documents\southernrock.cmd' which appears to be a wrapper script for the download and execution.

Heuristics 5

Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
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` `d612d5abb4e355ec30caba5a35b97cb463115c1e6d5432402f6ddf3cc1943302`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1182 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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