MALICIOUS — c845f067da12d5aa0e92ce94bcc8cddf0dc4c6fc54793f58d1812acca542eaf6

MALICIOUS — c845f067da12d5aa0e92ce94bcc8cddf0dc4c6fc54793f58d1812acca542eaf6 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Zusy family. 5 of 56 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: c845f067da12d5aa0e92ce94bcc8cddf0dc4c6fc54793f58d1812acca542eaf6
• SHA-1: 24d6ab37d2e15611b872c7ac81ff54d67056a010
• MD5: 6ff40f0409ef56cf7aefc2dc22f67324
• imphash: 858aee865f44703f181e0ac78825594b
• ssdeep: 24576:aY4G2qLMJalsnqShyoo77lUabuSvbDQOOdIxJsG9y:T3XZynV4oDabuWbDQOcIxJJ9y
• TLSH: T1B051230B32524BEBE768A73E0E5F6D6E6C1EC6391851A5CD6A27FA433DD20430213674
• Submitted as: c845f067da12d5aa0e92ce94bcc8cddf0dc4c6fc54793f58d1812acca542eaf6
• File type: pe · Size: 835592 bytes
• Verdict: malicious (99/100) · Family: Zusy

Detections (5 of 56 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:EsIL1
• ClamAV (daily): Win.Malware.Fragtor-9909039-0
• Microsoft Defender: Trojan:Win32/Zusy.EM!MTB
• Emsisoft (Emergency Kit): Gen:Variant.Zusy.465014
• Kaspersky (KVRT): HEUR:Packed.Win32.Vemply.gen

MITRE ATT&CK

• T1112
• T1105

Why this verdict

The malicious score of 99/100 is the fusion of 10 weighted signals:

• ClamAV (daily) flagged Win.Malware.Fragtor-9909039-0 (rule Win.Malware.Fragtor-9909039-0) - engine signal, weight 0.90, confidence 0.95
• Microsoft Defender flagged Trojan:Win32/Zusy.EM!MTB (rule Trojan:Win32/Zusy.EM!MTB) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Variant.Zusy.465014 (rule Gen:Variant.Zusy.465014) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged HEUR:Packed.Win32.Vemply.gen (rule HEUR:Packed.Win32.Vemply.gen) - engine signal, weight 0.55, confidence 0.85
• Contacted 25 external host(s) and 13 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
• MalwareAnalyser heuristics (entropy/packer) flagged high-entropy-sections:EsIL1 (rule high-entropy-sections:EsIL1) - engine signal, weight 0.35, confidence 0.70
• Packing/obfuscation: high-entropy-sections:EsIL1 - static signal, weight 0.25, confidence 0.55
• Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
• Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
• Memory forensics: 2 finding(s) elsewhere in the guest, not attributed to this sample, e.g. SSDT hook (rule windows.ssdt.SSDT) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

13370 behavior events · 1 ATT&CK techniques · 2 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• 252.0.0.224.in-addr.arpa.
• 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa.
• nexusrules.officeapps.live.com
• 145.109.171.150.in-addr.arpa.
• desktop-hsgcbep
• update.googleapis.com
• self.events.data.microsoft.com
• oneocsp.microsoft.com
• b.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 251.0.0.224.in-addr.arpa
• 2.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 1.0.240.10.in-addr.arpa
• 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 252.0.0.224.in-addr.arpa
• 203.33.253.131.in-addr.arpa
• _dosvc._tcp.local

Dropped files

• C:\Users\analyst\AppData\Local\Temp\1E0B0B0A120B156C155E15A0A0A160E0F160D.exe - 8055b5822b5094b2d647cfab341b3f859f7a6be5b7561b542f68eb1f4c11352a
• 0bf5f82625325112f5a93f9cf7db080b248e09c49ff16db2eafa74ccc31361ef - 0bf5f82625325112f5a93f9cf7db080b248e09c49ff16db2eafa74ccc31361ef

Embedded URLs

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

Embedded domains

• x1.c.lencr.org
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org

Embedded IP addresses

• 57.154.63.210
• 20.89.1.10
• 172.215.188.232
• 40.79.167.9
• 72.153.5.136
• 4.150.223.114
• 4.150.223.110
• 52.182.143.212
• 72.145.35.97
• 52.148.114.188
• 20.184.175.18
• 20.42.179.192
• 20.42.73.30
• 20.42.179.204
• 172.215.188.225
• 52.110.12.55
• 72.145.35.96
• 20.184.175.8
• 172.172.255.218
• 203.26.79.13
• 20.42.65.94
• 20.42.65.84
• 4.247.188.233
• 57.155.101.212
• 92.223.78.30

File paths

• t:\c

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report