MALICIOUS — a88540a19a085bbe628d2ab391d333f5ae3e9585c21d0fe9243ee842f50e2a7d

MALICIOUS — a88540a19a085bbe628d2ab391d333f5ae3e9585c21d0fe9243ee842f50e2a7d is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Zusy family. 6 of 56 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

SHA-256: a88540a19a085bbe628d2ab391d333f5ae3e9585c21d0fe9243ee842f50e2a7d
SHA-1: bf9994f9bdf3109e701581b43e1bc393de7eb9c1
MD5: b4560988ab9ea0b1f6378a55bb167833
imphash: c9b6c3da312e87a7377bab0dcbaf2d4a
ssdeep: 24576:SypW9SgLNZaOdcTMuUvxIg+JXk7tSmTEYMh89NMtMGkjV2NP1W25I:St9SgLNZa6xIpJ07tSmTEYvHMMGw2N9Y
TLSH: T17E5423299822C4FEC6D94F9C4A2F270C9A5B25F5453CED5B2291B23F1C10A77F5640A3
Submitted as: a88540a19a085bbe628d2ab391d333f5ae3e9585c21d0fe9243ee842f50e2a7d
File type: pe · Size: 1108132 bytes
Verdict: malicious (100/100) · Family: Zusy

Detections (6 of 56 engines)

MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:
ClamAV (daily): Win.Malware.Zusy-9781883-0
YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
Detect It Easy (packer/type): DIE:Microsoft Linker
Microsoft Defender: Trojan:Win32/Salgorea.VRR!MTB
Kaspersky (KVRT): Backdoor.Win32.Salgorea.id

MITRE ATT&CK

T1543.003

Why this verdict

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

ClamAV (daily) flagged Win.Malware.Zusy-9781883-0 (rule Win.Malware.Zusy-9781883-0) - engine signal, weight 0.90, confidence 0.95
Microsoft Defender flagged Trojan:Win32/Salgorea.VRR!MTB (rule Trojan:Win32/Salgorea.VRR!MTB) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Backdoor.Win32.Salgorea.id (rule Backdoor.Win32.Salgorea.id) - engine signal, weight 0.55, confidence 0.85
YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.60, confidence 0.70
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
1 behavioral detection(s) across 1 rule(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
Contacted 5 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Detect It Easy (packer/type) flagged DIE:Microsoft Linker (rule DIE:Microsoft Linker) - engine signal, weight 0.35, confidence 0.70
MalwareAnalyser heuristics (entropy/packer) flagged high-entropy-sections: (rule high-entropy-sections:) - engine signal, weight 0.35, confidence 0.70
Packing/obfuscation: high-entropy-sections:, Microsoft Linker - static signal, weight 0.25, confidence 0.55

Dynamic analysis (windows)

163 behavior events · 1 ATT&CK techniques · 5 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Temp\F3F5.tmp - 45e5b302ecdfd4180b7fd117bec54b546727b0ab516270aab3b54ea3078a8f0a
cdab9660cf25db7302b108a6c280b4af5d8f8d9271b48d554c3e76f34b7a51f2 - cdab9660cf25db7302b108a6c280b4af5d8f8d9271b48d554c3e76f34b7a51f2
31c6a7fa2d8a35480e98aeb69c784ecb65c982ebca02636d04f53f45050e8713 - 31c6a7fa2d8a35480e98aeb69c784ecb65c982ebca02636d04f53f45050e8713
f63e158cb57ee86f374f57da1c84d56ec9834ec10c161bb6cd92f202244ab301 - f63e158cb57ee86f374f57da1c84d56ec9834ec10c161bb6cd92f202244ab301
6d5688e8c2bc105ab282adf14dda5805c892867d9424bff40902386d98d8e0e2 - 6d5688e8c2bc105ab282adf14dda5805c892867d9424bff40902386d98d8e0e2

Embedded URLs

http://schemas.microsoft.com/SMI/2005/WindowsSettings
http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Embedded domains

schemas.microsoft.com

Embedded IP addresses

4.150.223.97
52.123.252.247
4.230.171.124
57.155.104.224
20.247.185.124
20.165.94.54
20.184.175.14
74.178.76.128
172.64.154.167
52.110.12.52
52.110.12.3

File paths

Q:\6$L
r:\a~

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report