MALICIOUS — 4c5b4f15247d39b2ae19b5a737bf48a935d5c9122eaff09adad444d2fa09289b

MALICIOUS — 4c5b4f15247d39b2ae19b5a737bf48a935d5c9122eaff09adad444d2fa09289b is a script sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (94/100), attributed to the Base64 family. 4 of 54 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

• SHA-256: 4c5b4f15247d39b2ae19b5a737bf48a935d5c9122eaff09adad444d2fa09289b
• SHA-1: 3b4eb0209bea91eb848e7ef61885e72dee8f8049
• MD5: dfccac234d5c9550a4da9d8421a01ad7
• ssdeep: 96:xy7T6T/vXhDGR8jyhwjYJzJVb5g8PKHY4AKvn+S7lM:87qvXhjyhwcTVTMvLlM
• TLSH: T1371D7B096D71FEA60C51EF21425F36CAC5A062648005F090FED95079EE7AF713EA1BE2
• Submitted as: 4c5b4f15247d39b2ae19b5a737bf48a935d5c9122eaff09adad444d2fa09289b
• File type: script · Size: 6072 bytes
• Verdict: malicious (94/100) · Family: Base64

Detections (4 of 54 engines)

• capa (capabilities): capability:execution/powershell
• YARA: MalwareAnalyser community pack: TL_Base64_EncodedCommand
• Microsoft Defender: Trojan:PowerShell/Boxter.HDQ!MTB
• Kaspersky (KVRT): HEUR:Trojan.PowerShell.Generic

MITRE ATT&CK

• T1059.001

Why this verdict

The malicious score of 94/100 is the fusion of 6 weighted signals:

• Microsoft Defender flagged Trojan:PowerShell/Boxter.HDQ!MTB (rule Trojan:PowerShell/Boxter.HDQ!MTB) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged HEUR:Trojan.PowerShell.Generic (rule HEUR:Trojan.PowerShell.Generic) - engine signal, weight 0.55, confidence 0.85
• Obfuscated powershell script: shellcode-injection (layers: powershell-encodedcommand+base64) (rule script-deobfuscation) - static signal, weight 0.55, confidence 0.75
• execute via PowerShell (rule execute via PowerShell) - capa signal, weight 0.40, confidence 0.80
• YARA: MalwareAnalyser community pack flagged TL_Base64_EncodedCommand (rule TL_Base64_EncodedCommand) - engine signal, weight 0.45, confidence 0.70
• capa (capabilities) flagged capability:execution/powershell (rule capability:execution/powershell) - engine signal, weight 0.35, confidence 0.70

Dynamic analysis (windows)

1144 behavior events · 0 ATT&CK techniques · 0 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• 250.255.255.239.in-addr.arpa
• ntp.ubuntu.com
• desktop-hsgcbep._dosvc._tcp.local
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• 23.40.52.209
• 23.11.37.157
• 20.190.167.66
• 23.33.238.188
• 23.198.40.44
• 52.110.12.51 AU · Sydney · AS8075 Microsoft Corporation
• 4.230.171.124 KR · Seoul · AS8075 Microsoft Corporation
• 20.247.184.142 SG · Singapore · AS8075 Microsoft Corporation
• 23.33.238.102
• 74.178.240.51 NL · Amsterdam · AS8075 Microsoft Corporation

Embedded URLs

• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl

Embedded IP addresses

• 20.42.179.192
• 74.178.76.128
• 40.84.85.40
• 40.84.97.4
• 20.42.179.204
• 52.148.114.188
• 52.110.12.51
• 4.230.171.124
• 20.247.184.142
• 74.178.240.51
• 20.42.73.31
• 52.168.117.175

File paths

• C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe\

More Base64 samples · Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report