Malicious Office (OLE) / .XLA — malware analysis report

Static analysis result for SHA-256 44d0ed8950e40735…

MALICIOUS

Office (OLE) / .XLA

573.5 KB Created: 2003-07-09 16:59:49 Authoring application: Microsoft Excel
MD5: 90597b7a8335c19fba2be9bf15265360 SHA-1: 4734ad98569eab294aac2a1e858b44a61566948a SHA-256: 44d0ed8950e407354bea3a8a94e211da13b825f84133af4d9c71b8327b5d36d0
348 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1059 Command and Scripting Interpreter

The file is an Excel macro-enabled add-in (XLA) containing VBA macros. High-severity heuristics indicate the presence of ShellExecute and Shell() calls, along with an Auto_Open macro, suggesting the execution of arbitrary code upon opening. The script likely downloads and executes a second-stage payload from the embedded URL http://Eplan5-Tools.heim.at. The document body contains menu items related to Eplan software, indicating a potential lure targeting users of that software.

Heuristics 11

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close 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.
  • NOP-equivalent sled detected medium SC_NOP_EQUIV_SLED
    Long run of 0x40 bytes
  • 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)
  • 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://Eplan5-Tools.heim.at
    • http://www.Eplan5-Tools.de.vu

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
52209dd33b2a97d5165bc92b6159319d6dc15728eed122a7722b7816a8796d32		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 290424 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 5 shell/COM execution token(s). Carved artifact contains 76 Chr/ChrW string-construction calls. 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.