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

Static analysis result for SHA-256 3fcb2dde6e1867fd…

MALICIOUS

Office (OLE) / .DOC

196.5 KB Created: 2021-03-04 23:42:00 Authoring application: Microsoft Office Word
MD5: 797f651c45b0b81311e0e23844a448e2 SHA-1: 2bfaa69508304632718274c6a648cf28f0199bd3 SHA-256: 3fcb2dde6e1867fdbb5b6d5d9ed05a486b69855df4438dce4f4313f454effaf2
288 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains a Document_Open macro that utilizes Shell() and CreateObject calls, indicative of executing arbitrary code. The macro likely downloads and executes a second-stage payload from the embedded URL http://malev-bg.com/juop. The presence of VBA p-code auto-execution with execution tokens further supports this malicious intent.

Heuristics 9

  • 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
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_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
  • 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://malev-bg.com/juop
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
c8f60ce4cbf5c35988e771e976c154be3e78463249d9ab710102042e1fd595f0		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2387 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 20 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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