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

Static analysis result for SHA-256 203d96d270e71e85…

MALICIOUS

Office (OLE) / .DOC

745.0 KB Created: 2021-06-01 13:53:00 Authoring application: Microsoft Office Word
MD5: 8566c9b1e8b18b0f23cf21ca5f2d5daf SHA-1: c2cb93f523536858ea982e278ed045cb5a10b85d SHA-256: 203d96d270e71e85cb48f51c91897d30193d65680aa8da0c3fa1547db0eaa615
290 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains a Document_Open VBA macro that uses CreateObject and Shell() calls, indicating it attempts to execute arbitrary code. This macro likely downloads and executes a second-stage payload from one of the embedded URLs. The presence of an appended OLE payload further supports this malicious behavior.

Heuristics 9

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • OLE file has appended executable-looking payload bytes high OLE_APPENDED_PAYLOAD
    OLE compound file contains a large high-entropy region beyond the declared major streams and that region includes shellcode, PE, or loader API markers. This is a payload-carrier signal, not a specific CVE attribution by itself.
  • 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 — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.
    URL https://tkswift.com/wbP*Kg
    • https://brandvoxtech.cogI3Gi\qm/wp-contegI3Gi\qnt/plugins/premium-agI3Gi\qddgI3Gi\qons-for-elementgI3Gi\qor/widgets/dep/DPOySTqLqjmhG.php
    • https://reachmedical.in/zB0Cj
    • https://pillsdDuXmZJaddy.com/a|KAVv
    • https://rockconsultllc.com/Malik2/wp-content/plugins/bluehost-wordpress-plugin/build/KhPxqrfzEA.PGqU&14php
    • https://reachmedical.in/zB0Cjhchanges/uploads/file_formatzB0CjhzB0Cjh/5vixzB0CjhBSDMmITU.php
    • https://marcoLtSIcferriarchitectLtSIc.com/wp-content/pLtSIclugins/wp-optimize/css/tLtSIcablesorter/zjTG2uJlLtSIcKEev.phLtSIcp
    • https://resaltokU0,VdigitakU0,Vl.com/wp-kU0,VcontentkU0,V/uploads/jupitekU0,Vrx/compiler/kU0,Vjupiterx/qwrSrMZN.php
    • https://stskleen.com^m3u*P.au/wp-content/plugins/w^m3u*Poocommerce^m3u*P-services^m3u*P/d^m3u*Pist/chunks/CaUGJzgC.php
    • https://pillsdDuXmZJaddy.com/wp-includes/js/tinymcDuXmZJe/themeDuXmZJs/inlite/vyQ9DuXmZJP2Q9.php
    • https://braFTPessilvioleiro.cFTPesom.br/wp-content/cache/objectFTPes/e3c/9ab/rSpBh8UFTPesHQFTPesx8r.pFTPeshp
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
e9ba52b6a1ec2db43fdc360b7cd0f3ee2e180bfc6a9007fd19a39a900dbb71a5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 141483 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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