Office (OLE) / .XLS malware analysis — malicious · 2b24a86b606f43d4

MALICIOUS

Office (OLE) / .XLS

136.0 KB Created: 2015-08-14 13:22:08 Authoring application: Microsoft Excel

MD5: 0f52e83ccd957c9c5f603ad60a26f8d8 SHA-1: 431a1ede0b939f0495ba82c4349b239cb60561eb SHA-256: 2b24a86b606f43d46f1a875ec13260a516407d942ba1dfa357e9d7c71eadbfcb

282 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File

The critical OLE_VBA_SHELL heuristic indicates the use of the Shell() function, which is confirmed by the Workbook_Open macro. This macro creates a JavaScript file named 'sllar.js' and then executes it using 'wscript'. The JavaScript file is likely a downloader for a second-stage payload. The presence of the embedded URL and the 'wscript' execution strongly suggest a malicious intent to download and execute further malicious code.

Heuristics 8

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
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
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://sitestory.dk/excel_vba/vba-start-page.htm

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `5a63c3cd10bdd5b28a37b4674dbcef843d8cd819e60a89ffebb51d5c484dedbd`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	60200 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.