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Windows
Analysis Report
Mortgage Calculator and Comparator.xlsx
Overview
General Information
Detection
Score: | 7 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 40% |
Signatures
Creates files inside the system directory
Deletes files inside the Windows folder
Detected non-DNS traffic on DNS port
Drops PE files
Drops PE files to the windows directory (C:\Windows)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
IP address seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
PE file contains more sections than normal
PE file contains sections with non-standard names
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: Excel Network Connections
Sigma detected: Suspicious Office Outbound Connections
Stores files to the Windows start menu directory
Uses insecure TLS / SSL version for HTTPS connection
Classification
- System is w10x64
- EXCEL.EXE (PID: 3788 cmdline:
"C:\Progra m Files (x 86)\Micros oft Office \Root\Offi ce16\EXCEL .EXE" /aut omation -E mbedding MD5: 4A871771235598812032C822E6F68F19) - splwow64.exe (PID: 3176 cmdline:
C:\Windows \splwow64. exe 12288 MD5: 77DE7761B037061C7C112FD3C5B91E73)
- chrome.exe (PID: 3720 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" --st art-maximi zed "about :blank" MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4) - chrome.exe (PID: 5456 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" --ty pe=utility --utility -sub-type= network.mo jom.Networ kService - -lang=en-U S --servic e-sandbox- type=none --mojo-pla tform-chan nel-handle =2164 --fi eld-trial- handle=201 6,i,117837 4307907939 946,244622 8775624378 766,262144 --disable -features= Optimizati onGuideMod elDownload ing,Optimi zationHint s,Optimiza tionHintsF etching,Op timization TargetPred iction /pr efetch:8 MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4)
- chrome.exe (PID: 5784 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" "htt p://www.ex celworks.c o.uk/" MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4)
- EXCEL.EXE (PID: 5412 cmdline:
"C:\Progra m Files (x 86)\Micros oft Office \Root\Offi ce16\EXCEL .EXE" "C:\ Users\user \Desktop\M ortgage Ca lculator a nd Compara tor.xlsx" MD5: 4A871771235598812032C822E6F68F19)
- cleanup
⊘No configs have been found
⊘No yara matches
Source: | Author: Christopher Peacock '@securepeacock', SCYTHE '@scythe_io', Florian Roth '@Neo23x0", Tim Shelton: |
Source: | Author: X__Junior (Nextron Systems): |
⊘No Suricata rule has matched
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There are no malicious signatures, click here to show all signatures.
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