Office (OLE) / .XLS malware analysis — malicious · 2d0009f280f6f8a0

MALICIOUS

Office (OLE) / .XLS

45.5 KB Created: 2010-03-18 19:37:31 Authoring application: Microsoft Excel

MD5: 68832ef46f9ba0e9cb0c5a94db6c0831 SHA-1: bd98b7cfd0cfbe95a52f6cda2026878ec1fa386b SHA-256: 2d0009f280f6f8a0ffbe5d4cfeedd2f106aed95a3f72171f88996aabbb591873

348 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The file is an XLS document containing VBA macros, specifically a Workbook_Open macro that is configured to execute automatically. Heuristics indicate the use of ShellExecute, LoadLibrary, and GetProcAddress APIs, along with a call to CreateObject, suggesting the macro attempts to download and execute a second-stage payload. An embedded PE executable was also detected. The presence of a Workbook_Open macro that calls ShellExecute strongly suggests an attempt to download and run a malicious payload upon opening the document.

Heuristics 10

Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
Reference to LoadLibrary API high SC_STR_LOADLIBRARY

Reference to LoadLibrary API
Reference to GetProcAddress API high SC_STR_GETPROCADDRESS

Reference to GetProcAddress API
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
Embedded PE executable high OLE_EMBEDDED_EXE

MZ/PE header found inside document — possible embedded executable
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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `5da83b5ffc496a1f5a87333e4c20907a4f0025a6ef0b2ac87871a936b95b9e56`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4364 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 shell/COM execution token(s). 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.