MALICIOUS — ZClient.exe

MALICIOUS — ZClient.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (85/100), attributed to the AntiDebug family. 3 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

• SHA-256: 2a8d9976f344fe87f94de46804b540a9b906c4ecd7cf0a1eb0a71ce2905b4434
• SHA-1: fa1513bb3e82d3c0f7087585d3060e3dc3880ac2
• MD5: fa35d8e427eeb6ca5432f8ef9cdbeccb
• imphash: a118f0bdd2baa05010acd7ae064fbef6
• ssdeep: 6144:+OgTC6HSVLwWp3qgLMbU4FT0ufH++uiaMHtiHKA+WtC/KIVAKCFkiPDkniUDoDo9:7H66HMWaK+WtC/KIVAoQDE0EPjh
• TLSH: T1AC4B3A22A55D1305EEE2D578E0DE7F8C9203FA0473BA2B8D0763810456EE4E3953A75B
• Submitted as: ZClient.exe
• File type: pe · Size: 470030 bytes
• Verdict: malicious (85/100) · Family: AntiDebug

Detections (3 of 55 engines)

• YARA: Yara-Rules community: YR_AntiDebug_Checks
• Microsoft Defender: Trojan:Win32/Yomal!rfn
• Emsisoft (Emergency Kit): Gen:Variant.Draftor.21762

MITRE ATT&CK

• T1057

Why this verdict

The malicious score of 85/100 is the fusion of 5 weighted signals:

• Microsoft Defender flagged Trojan:Win32/Yomal!rfn (rule Trojan:Win32/Yomal!rfn) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Variant.Draftor.21762 (rule Gen:Variant.Draftor.21762) - engine signal, weight 0.55, confidence 0.85
• YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: https://gcc.gnu.org/bugs/ - static signal, weight 0.35, confidence 0.60
• enumerate processes (rule enumerate processes) - capa signal, weight 0.20, 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.

Embedded URLs

• https://gcc.gnu.org/bugs/

Embedded domains

• z.dev
• zm.zloemu.net
• gcc.gnu.org
• cftun.zloemu.net
• dwellcloud.zloemu.net
• cdncf.zloemu.net
• dcdn.zloemu.net

File paths

• X:\:`:d:h:l:p:t:x:

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report