Office (OLE) / .XLS malware analysis — malicious · c0c93f169cabc35b

MALICIOUS

Office (OLE) / .XLS

74.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel

MD5: 61cad3efd5f03b11b513cf54c6b2122b SHA-1: 5b5584f7798f33d6bab0c37755f3fe62672b48f7 SHA-256: c0c93f169cabc35bbaac637c0dd6c21112752398c42b3c828d78d9cc4de2eaed

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The Workbook_Open macro executes upon opening the spreadsheet. It constructs a command line that writes a batch file to 'C:\Users\Public\Documents\travelespecially.cmd'. This batch file then downloads an executable from 'http://greenpayindia.com/wp-conternt/ConsoleApp18.exe' to 'C:\Users\Public\Documents\brotherneed.exe' and executes it. The macro uses CreateObject to launch the constructed command.

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` `5fc878911f6fdaca894cc0a9df073ca5ac8389c689f7c1b606d0da25e8345b9c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1227 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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