MALICIOUS — 75751d3397311af25ab59961d2b79fe6ddea54f14cd23d808b4ae2233302a6a7

MALICIOUS — 75751d3397311af25ab59961d2b79fe6ddea54f14cd23d808b4ae2233302a6a7 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: 75751d3397311af25ab59961d2b79fe6ddea54f14cd23d808b4ae2233302a6a7
• SHA-1: d669fd3b2dde2470d8d168b4c8b7917811a086f0
• MD5: 4cadce5a1a1afa617567b265d6947d1c
• ssdeep: 96:xy7T6T/vXhDGR8jyhwjYcEXw9PLU6sIxkKFKagvdKcO9oUx111+3nL+SaTwMXh0:87qvXhjyhwc7YhqJO9ZQ3LKTwMXh0
• TLSH: T1F51D9F096E71BEAA0C51AF21425F35CAC6E161248101F0D0FDD4A43DEE7AF743DA1BA2
• Submitted as: 75751d3397311af25ab59961d2b79fe6ddea54f14cd23d808b4ae2233302a6a7
• File type: script · Size: 6036 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/Rozena.HNAB!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/Rozena.HNAB!MTB (rule Trojan:PowerShell/Rozena.HNAB!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)

1125 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
• desktop-hsgcbep(1)._dosvc._tcp.local
• desktop-hsgcbep(2)._dosvc._tcp.local
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• 23.40.52.85
• 172.66.2.5 US · San Francisco · AS13335 Cloudflare, Inc.
• 23.11.37.157
• 40.126.14.161
• 150.171.22.17
• 23.198.40.44
• 52.110.12.22 AU · Sydney · AS8075 Microsoft Corporation
• 4.230.171.124 KR · Seoul · 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

• 51.116.246.104
• 52.168.117.170
• 72.153.5.61
• 172.66.2.5
• 52.110.12.22
• 4.230.171.124
• 172.215.188.232
• 52.148.114.188

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