Office (OLE) / .XLS malware analysis — malicious · 7da573f1004e4bb9

MALICIOUS

Office (OLE) / .XLS

342.5 KB Created: 2021-04-13 13:37:17 Authoring application: Microsoft Excel

MD5: dcb68156748e6c71ef5df8d9dddb3ff6 SHA-1: ffee33ce2a6b4523a5f7323ca00a7347b1dc986a SHA-256: 7da573f1004e4bb9c6979a6ccca45da8998deaa92dd1e318d128ff4888212536

220 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains VBA macros, specifically a Workbook_Open macro, which is a common technique for initial execution. The macro utilizes CreateObject and references Windows Script Host, indicating it likely attempts to download and execute a second-stage payload from the URL http://iklangratissurabaya.skom.id/zx/Fsbey.ex. The presence of these elements strongly suggests a malicious downloader.

Heuristics 7

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://iklangratissurabaya.skom.id/zx/Fsbey.ex
- http://�iklangr@(

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `efa7db0427c727f93062d4ee2ff7cd9b14760913418e7f34c384fa803252b903`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1196 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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