MALICIOUS — KKXBZ.exe

MALICIOUS — KKXBZ.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (93/100), attributed to the Zusy family. 6 of 55 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 954cace2aa2d71da26d874b5b050d0b97432843bac56d5099600be95f8d6bdb8
• SHA-1: 429f2820b7f294c7ab5edeb84aaaaab322a942b9
• MD5: fe502d50745a0a95569e3c0524589dcb
• imphash: 8c235e3a9d7f61224225c532f7c9583a
• ssdeep: 3072:oLQaL9tbLkRIgd1Lye9yjE2hWAN5XbclcdL+LOf34NLthEjQT6j:MlZtbLWIgd1LZ9oECZbclc5+LOvQEj1
• TLSH: T1DA42AF8C856A5702EAB6DB601D81AE0FB0E3B09A603C18DDD3C3D22E16D785FB41651F
• Submitted as: KKXBZ.exe
• File type: pe · Size: 212992 bytes
• Verdict: malicious (93/100) · Family: Zusy

Detections (6 of 55 engines)

• capa (capabilities): capability:collection/keylog
• ClamAV (daily): Win.Malware.Zusy-9759517-0
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• Microsoft Defender: Trojan:Win32/Aenjaris.AL!bit
• Emsisoft (Emergency Kit): Trojan.Agent.DCBC
• Kaspersky (KVRT): Trojan.Win32.Agent.antno

MITRE ATT&CK

• T1547.001
• T1056.001

Why this verdict

The malicious score of 93/100 is the fusion of 4 weighted signals:

• ClamAV (daily) flagged Win.Malware.Zusy-9759517-0 (rule Win.Malware.Zusy-9759517-0) - engine signal, weight 0.90, confidence 0.95
• capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
• YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70
• persist via registry run key (rule persist via registry run key) - capa signal, weight 0.35, confidence 0.60

Dynamic analysis

No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.

File paths

• f:\rtm\vctools\vc7libs\ship\atlmfc\include\afxwin2.inl
• C:\windows\%s
• C:\windows\system32\%s
• C:\windows\system\%s
• c:\stop-adw.txt

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report