Worm:Win32/Nayrabot removal guide

The Worm:Win32/Nayrabot 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 Worm:Win32/Nayrabot virus can do?

Injection (inter-process)
Injection (Process Hollowing)
Executable code extraction
Injection with CreateRemoteThread in a remote process
Creates RWX memory
A process attempted to delay the analysis task.
Expresses interest in specific running processes
Performs some HTTP requests
Executed a process and injected code into it, probably while unpacking
Deletes its original binary from disk
Code injection with CreateRemoteThread in a remote process
A system process is generating network traffic likely as a result of process injection
Installs itself for autorun at Windows startup
Creates a hidden or system file
Creates a copy of itself
Connects to an IRC server, possibly part of a botnet

Related domains:

filehelp.us

api.wipmania.com

How to determine Worm:Win32/Nayrabot?


File Info:
crc32: 1EBB5B6D
md5: 8dff88cc72e04eb2a6905b5c81b77eec
name: 8DFF88CC72E04EB2A6905B5C81B77EEC.mlw
sha1: cb107c5650a1279019ec7e4e5bb3974a66a5bb26
sha256: 5502cb3d1769597ced14637825559c2fbf42a924292d0205b52f1e02993c2dc1
sha512: 98bedf55b2d120a38ab3c24e19db3e0932e665a79ce731825488af1b1845de3b4835ea8b97761fb5de39ea7528a181ff684d2b80efdafcd6224927d05cbda5a1
ssdeep: 3072:eyiJmqySsZQs2lnybI4lkLuGrpya1dW3JsObI0hAiL9mWMAdj41qr3gvA7g/fbT:ey0ySHyE9MNAiL95D3Z8bke5t20
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:
LegalCopyright: Copyright xa9 1997-2011 Simon Tatham.
InternalName: PuTTY
FileVersion: 0.62
CompanyName: Simon Tatham
ProductName: PuTTY suite
ProductVersion: 0.62
FileDescription: SSH, Telnet and Rlogin client
OriginalFilename: PuTTY
Translation: 0x0409 0x04e4

Worm:Win32/Nayrabot also known as:

K7AntiVirus	Trojan ( 7000000f1 )
DrWeb	Trojan.DownLoader7.8295
Cynet	Malicious (score: 99)
ALYac	Gen:Variant.Jacard.174399
CrowdStrike	win/malicious_confidence_60% (D)
Alibaba	Ransom:Win32/Blocker.1e90ab4a
K7GW	Trojan ( 7000000f1 )
Cybereason	malicious.c72e04
Symantec	ML.Attribute.HighConfidence
ESET-NOD32	a variant of Win32/Injector.AAAD
APEX	Malicious
Avast	Win32:Malware-gen
Kaspersky	Trojan-Ransom.Win32.Blocker.zkt
BitDefender	Gen:Variant.Jacard.174399
NANO-Antivirus	Trojan.Win32.Blocker.ctdukq
ViRobot	Trojan.Win32.A.Blocker.168448.D
MicroWorld-eScan	Gen:Variant.Jacard.174399
Ad-Aware	Gen:Variant.Jacard.174399
Sophos	Mal/Generic-S
Comodo	Malware@#n7wcxbqqhz79
BitDefenderTheta	AI:Packer.57B8C2CB16
VIPRE	Trojan.Win32.Generic.pak!cobra
McAfee-GW-Edition	BehavesLike.Win32.Infected.gm
FireEye	Generic.mg.8dff88cc72e04eb2
Emsisoft	Gen:Variant.Jacard.174399 (B)
Avira	HEUR/AGEN.1115037
eGambit	Generic.Malware
Antiy-AVL	Trojan/Generic.ASMalwS.56CCDF
Microsoft	Worm:Win32/Nayrabot
AegisLab	Trojan.Win32.Blocker.j!c
GData	Gen:Variant.Jacard.174399
McAfee	Artemis!8DFF88CC72E0
MAX	malware (ai score=100)
VBA32	TrojanDownloader.Andromeda
Panda	Trj/Agent.MIZ
Tencent	Malware.Win32.Gencirc.10c00b40
Yandex	Trojan.GenAsa!VcmVFEn2siQ
Ikarus	Trojan-Ransom.Blocker
Fortinet	W32/Generic.AC.202802!tr
AVG	Win32:Malware-gen
Paloalto	generic.ml

How to remove Worm:Win32/Nayrabot?

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.

Worm:Win32/Nayrabot removal guide