MALICIOUS — 21b43f5fb1128d91a1caf0807911382d94577bee6cf28c25ce4885ad811f89f2.exe

MALICIOUS — 21b43f5fb1128d91a1caf0807911382d94577bee6cf28c25ce4885ad811f89f2.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (95/100), attributed to the Dnxf family. 4 of 25 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 21b43f5fb1128d91a1caf0807911382d94577bee6cf28c25ce4885ad811f89f2
• SHA-1: a238375a9d04576126c3970ead883d0067cd448a
• MD5: c3f9ceb208715d38e07eda76b25aa169
• imphash: 42492c8bc2aad1800e134cedaf5754c9
• ssdeep: 98304:YKJgtETPzOICDtPfeE/jowqK5LN1KQ0oTh2M9QrABlolllDHVMRwh6tor:GiiICteErownP0oTcMsABqlAuctw
• TLSH: T1CD65335646123391EEF3E870EC809D4D8463B29968B2E59C6987CD5E30F9D33E4F0A46
• Submitted as: 21b43f5fb1128d91a1caf0807911382d94577bee6cf28c25ce4885ad811f89f2.exe
• File type: pe · Size: 5632241 bytes
• Verdict: malicious (95/100) · Family: Dnxf

Source: MalwareBazaar · first seen 2026-08-01T00:00:00.000Z · SHA-256 verified

Detections (4 of 25 engines)

• MalwareAnalyser heuristics (entropy/packer): PyInstaller
• Detect It Easy (packer/type): DIE:PyInstaller
• Emsisoft (Emergency Kit): Gen:Variant.Adware.Yogi.1551
• Kaspersky (KVRT): Trojan-Dropper.Win32.Sysn.dnxf

MITRE ATT&CK

• T1112
• T1071.004

Why this verdict

The malicious score of 95/100 is the fusion of 8 weighted signals:

• Emsisoft (Emergency Kit) flagged Gen:Variant.Adware.Yogi.1551 (rule Gen:Variant.Adware.Yogi.1551) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged Trojan-Dropper.Win32.Sysn.dnxf (rule Trojan-Dropper.Win32.Sysn.dnxf) - engine signal, weight 0.55, confidence 0.85
• 1 behavioral detection(s): Possible DNS tunneling (long/many queries) [medium] (rule tl-dns-tunneling) - dynamic signal, weight 0.40, confidence 0.90
• Contacted 95 external host(s) at runtime (17 HTTP) - network signal, weight 0.40, confidence 0.80
• Anti-analysis: T1082, T1497 - dynamic signal, weight 0.40, confidence 0.75
• Detect It Easy (packer/type) flagged DIE:PyInstaller (rule DIE:PyInstaller) - engine signal, weight 0.35, confidence 0.70
• Packing/obfuscation: PyInstaller - static signal, weight 0.25, confidence 0.55
• Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90

Dynamic analysis (windows)

16534 behavior events · 1 ATT&CK techniques · 0 dropped files.

Runtime network

• ifconfig.me
• tas02.sls.update.microsoft.com
• 145.111.160.34.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.
• 251.0.0.224.in-addr.arpa.
• login.live.com
• 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.
• 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.
• ocsp.digicert.com
• go-ns.org.ua
• 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.
• v10.events.data.microsoft.com
• time.windows.com
• 188.114.148.52.in-addr.arpa.
• ctldl.windowsupdate.com
• 65.167.190.20.in-addr.arpa.
• 174.52.40.23.in-addr.arpa.
• settings-win.data.microsoft.com
• www.facebook.com

Embedded URLs

• http://schemas.microsoft.com/SMI/2016/WindowsSettings

Embedded domains

• schemas.microsoft.com
• 8.gq
• ifconfig.me
• go-ns.org.ua
• t.me
• www.tiktok.com

Embedded IP addresses

• 74.179.77.204
• 92.223.78.30
• 74.178.76.128
• 172.67.208.133
• 74.178.76.44
• 172.66.2.5
• 104.21.85.170
• 20.42.73.31
• 4.150.223.97
• 74.178.232.29
• 149.154.167.99
• 34.160.111.145
• 157.240.8.35
• 52.123.252.244
• 4.247.188.224
• 4.150.223.113
• 74.178.240.61
• 162.159.142.9
• 52.123.252.192
• 4.247.188.233
• 52.123.252.231
• 72.154.7.110
• 52.123.252.225
• 52.148.114.188
• 20.42.73.27

File paths

• G:\($
• Y:\bG
• m:\0HCp

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report