Categories: Malware

Win32/Napolar.A (file analysis)

The Win32/Napolar.A is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What Win32/Napolar.A virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • Mimics the system’s user agent string for its own requests
  • Reads data out of its own binary image
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Performs some HTTP requests
  • Executed a process and injected code into it, probably while unpacking
  • Tries to unhook or modify Windows functions monitored by Cuckoo
  • A system process is generating network traffic likely as a result of process injection
  • Installs itself for autorun at Windows startup
  • A process sent information about the computer to a remote location.
  • Creates a copy of itself

Related domains:

favoured.in

How to determine Win32/Napolar.A?


File Info:

crc32: 6D6F423Cmd5: e8e4a20a78fb089456e4f06cbbb9bcf5name: E8E4A20A78FB089456E4F06CBBB9BCF5.mlwsha1: 88797faa9d09f86d6502f8989acc94ccb57a08bdsha256: 445999001ebde216e8e465d59cd35867f9a84e181e80986baeffc56709003503sha512: a1a05737bd40a7422c2204c6404e8232c66b969d74c453a623402ebbe1e907a862ed96708c1a8c89e7f5adf2cc640fcd4cabcfd44025f8b6af67cc08b596728assdeep: 6144:1SxmNPIU8+mePL2rebsodQ6Jm9UhaHVqMXYDYVbVPIqh1j7moysMUR1Ib/4:type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0LegalCopyright: x5p2nvh771dhklo9Assembly Version: 7.5.0.3InternalName: Adobe Flash Player 11.2 Installer.exeFileVersion: 7.5.0.3CompanyName: db9ooc8xrjw0xc6rLegalTrademarks: 1qnbkuj3am89wpo5Comments: y4tklu3kck71paq2ProductName: n5mi56wnlkik04jbProductVersion: 7.5.0.3FileDescription: vlw8pv1o9yc5b6q7OriginalFilename: Adobe Flash Player 11.2 Installer.exe

Win32/Napolar.A also known as:

K7AntiVirus Trojan ( 700000121 )
Lionic Trojan.Win32.Napolar.m!c
Elastic malicious (high confidence)
DrWeb Trojan.AVKill.24940
Cynet Malicious (score: 99)
ALYac Gen:Variant.Ransom.Samas.9
Cylance Unsafe
Zillya Backdoor.Napolar.Win32.2
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Trojan:MSIL/Predator.a3713d2c
K7GW Trojan ( 700000121 )
Cybereason malicious.a78fb0
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Napolar.A
APEX Malicious
Avast FileRepMetagen [DRP]
Kaspersky HEUR:Trojan.MSIL.Fsysna.gen
BitDefender Gen:Variant.Ransom.Samas.9
NANO-Antivirus Trojan.Win32.AVKill.dcnecf
ViRobot Trojan.Win32.S.Agent.593920.P
MicroWorld-eScan Gen:Variant.Ransom.Samas.9
Tencent Win32.Trojan.Generic.Anpk
Ad-Aware Gen:Variant.Ransom.Samas.9
Sophos Mal/Generic-R + Troj/Msil-OO
Comodo Malware@#2nurunh2afrso
BitDefenderTheta Gen:NN.ZemsilF.34050.Km0@aOzNX9f
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_VARNEP.UA14
McAfee-GW-Edition BehavesLike.Win32.Generic.hz
FireEye Generic.mg.e8e4a20a78fb0894
Emsisoft Gen:Variant.Ransom.Samas.9 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor/Napolar.m
Webroot W32.Malware.Gen
Avira TR/ATRAPS.Gen
eGambit Generic.Backdoor
Antiy-AVL Trojan/Generic.ASMalwS.6FEF56
Kingsoft Win32.Hack.Napolar.fb.(kcloud)
Microsoft Trojan:MSIL/Predator.BA!MTB
GData Gen:Variant.Ransom.Samas.9
TACHYON Backdoor/W32.DN-Napolar.593920
AhnLab-V3 Trojan/Win32.Agent.C254803
McAfee GenericRXGG-DC!E8E4A20A78FB
MAX malware (ai score=100)
VBA32 Backdoor.Napolar
Malwarebytes Trojan.Crypt.MSIL
Panda Generic Malware
TrendMicro-HouseCall TROJ_VARNEP.UA14
Ikarus Backdoor.Win32.DarkKomet
MaxSecure Trojan.Malware.300983.susgen
Fortinet MSIL/Kryptik.UFS!tr
AVG FileRepMetagen [DRP]
Paloalto generic.ml
Qihoo-360 Generic/TrojanSpy.Fsysna.HwMAEpsA

How to remove Win32/Napolar.A?

  • Download and install GridinSoft Anti-Malware.
  • Open GridinSoft Anti-Malware and perform a “Standard scan“.
  • Move to quarantine” all items.
  • Open “Tools” tab – Press “Reset Browser Settings“.
  • Select proper browser and options – Click “Reset”.
  • Restart your computer.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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