MALICIOUS — 651ff76d9eaaa4438e6a434a75fdd374f99c52f733b9def2952b9a4e43e1d3d7

MALICIOUS — 651ff76d9eaaa4438e6a434a75fdd374f99c52f733b9def2952b9a4e43e1d3d7 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Delf family. 6 of 56 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

• SHA-256: 651ff76d9eaaa4438e6a434a75fdd374f99c52f733b9def2952b9a4e43e1d3d7
• SHA-1: 3dde56cf701e252ae2fa262c2b6b7cb7faae0689
• MD5: 9d760b6bd93035d42a9cb5778c78e2bf
• imphash: 842ba1c2436dd1a931cfdde74fd7ef17
• ssdeep: 768:NiOQauOECLIK8u4qc+5aIjK4LrP+K5fE67y7N8FdUV0MeExZ6Tj8UPlWU:Nip8JB5aOLL+K5E6U878XUPlWU
• TLSH: T105338D361F2F2F1BEA7AD66788016B5E0862B8B934D50448D71FA8BD73EEC03685111D
• Submitted as: 651ff76d9eaaa4438e6a434a75fdd374f99c52f733b9def2952b9a4e43e1d3d7
• File type: pe · Size: 52249 bytes
• Verdict: malicious (100/100) · Family: Delf

Detections (6 of 56 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:DATA
• ClamAV (daily): Win.Trojan.Gobot-20
• YARA: Stratosphere IPS: STRATO_IRC_Botnet
• Microsoft Defender: Backdoor:Win32/Delf.BA!MTB
• Emsisoft (Emergency Kit): Gen:Trojan.IRC-Backdoor.dGX@aSF4T5g
• Kaspersky (KVRT): Backdoor.Win32.Delf.ma

MITRE ATT&CK

• T1071.001
• T1547.001
• T1112
• T1105

Why this verdict

The malicious score of 100/100 is the fusion of 14 weighted signals:

• ClamAV (daily) flagged Win.Trojan.Gobot-20 (rule Win.Trojan.Gobot-20) - engine signal, weight 0.90, confidence 0.95
• 1 behavioral detection(s) across 1 rule(s): Registry Run Key Persistence [high] (rule tl-run-key) - dynamic signal, weight 0.60, confidence 0.90
• Microsoft Defender flagged Backdoor:Win32/Delf.BA!MTB (rule Backdoor:Win32/Delf.BA!MTB) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Trojan.IRC-Backdoor.dGX@aSF4T5g (rule Gen:Trojan.IRC-Backdoor.dGX@aSF4T5g) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged Backdoor.Win32.Delf.ma (rule Backdoor.Win32.Delf.ma) - engine signal, weight 0.55, confidence 0.85
• YARA: Stratosphere IPS flagged STRATO_IRC_Botnet (rule STRATO_IRC_Botnet) - engine signal, weight 0.60, confidence 0.70
• Observed at runtime: Registry Run Key Persistence (T1547.001) (rule Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90
• Contacted 177 external host(s) and 9 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
• MalwareAnalyser heuristics (entropy/packer) flagged high-entropy-sections:DATA (rule high-entropy-sections:DATA) - engine signal, weight 0.35, confidence 0.70
• communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
• Packing/obfuscation: high-entropy-sections:DATA - 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)

15152 behavior events · 2 ATT&CK techniques · 1 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• 76.0.240.10.in-addr.arpa.
• 251.0.0.224.in-addr.arpa.
• d.1.d.1.c.4.2.1.4.9.5.2.6.e.8.b.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa.
• 1.0.240.10.in-addr.arpa.
• 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.
• 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.
• DESKTOP-HSGCBEP
• settings-win.data.microsoft.com
• v10.events.data.microsoft.com
• 40.85.84.40.in-addr.arpa.
• 106.223.150.4.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.
• 140.150.246.111.in-addr.arpa.
• watson.events.data.microsoft.com
• 245.160.234.135.in-addr.arpa.

Dropped files

• C:\Windows\ETHVVnbZu.exe - 96876bdf9b709cde51f7b63309ffdd28f8d1c48fd9021d396cf08efe5287bbd2

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

• 52.123.252.234
• 20.42.179.192
• 85.113.183.162
• 111.246.150.140
• 129.27.9.247
• 91.185.222.135
• 57.211.171.72
• 40.202.192.248
• 192.169.241.228
• 177.33.2.190
• 131.223.154.151
• 160.162.125.148
• 146.186.120.135
• 170.32.121.59
• 221.57.46.37
• 89.188.39.216
• 72.165.102.12
• 125.185.132.116
• 83.7.106.96
• 194.84.56.203
• 12.115.172.79
• 185.30.10.226
• 212.45.171.36
• 147.17.43.49
• 52.175.154.75

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report