Office (OLE) malware analysis — malicious · 9cd93b3a7a63ac7a

MALICIOUS

Office (OLE)

48.0 KB Created: 2009-11-20 07:15:28 Authoring application: Microsoft Excel

MD5: e8c368a698faa42efe22b80a23b58651 SHA-1: e57ff6a603722aa832320f6653b354cc065463e7 SHA-256: 9cd93b3a7a63ac7a451f032f4d766f2ad48877e52de838c2bae5ff68cb57cd72

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is an Excel document containing VBA macros, specifically an Auto_Open macro, which is a common technique for executing malicious code upon opening. The document body presents a job recruitment plan, a common lure to trick users into enabling macros. The ClamAV detection 'Xls.Trojan.Yawn-1' indicates a known malicious Excel macro threat. While no specific download URLs or persistence mechanisms were explicitly extracted, the presence of Auto_Open macro strongly suggests the intent to download and execute a second-stage payload.

Heuristics 4

ClamAV: Xls.Trojan.Yawn-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Trojan.Yawn-1
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `ecc07f76952f50579e1aeb4ddc22b331c1d08f5787ac7afdf0437f23b349e204`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5074 bytes
Detection ClamAV: Xls.Trojan.Yawn-1 Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.