NetDooka Malware

Spectating the NetDooka malware means that your computer is in big danger. This computer virus can correctly be identified as ransomware – type of malware which ciphers your files and forces you to pay for their decryption. Removing it requires some peculiar steps that must be done as soon as possible.

What is NetDooka virus?

NetDooka is ransomware-type malware. It searches for the files on your disk drive, encrypts it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your documents locked, this malware additionally does a lot of damage to your system. It modifies the networking setups in order to stop you from reading the elimination articles or downloading the anti-malware program. In rare cases, NetDooka can even prevent the setup of anti-malware programs.

NetDooka Summary

In total, NetDooka virus actions in the infected computer are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Possible date expiration check, exits too soon after checking local time;
  • Anomalous file deletion behavior detected (10+);
  • A process attempted to delay the analysis task.;
  • Dynamic (imported) function loading detected;
  • Manipulates data from or to the Recycle Bin;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • The binary contains an unknown PE section name indicative of packing;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Uses Windows utilities for basic functionality;
  • Behavioural detection: Injection (Process Hollowing);
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to modify desktop wallpaper;
  • Deletes its original binary from disk;
  • Behavioural detection: Injection (inter-process);
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Installs itself for autorun at Windows startup;
  • CAPE detected the Ursnif3 malware family;
  • Creates a copy of itself;
  • Encrypting the files kept on the target’s disks — so the victim cannot check these documents;
  • Blocking the launching of .exe files of anti-malware programs
  • Blocking the launching of installation files of anti-malware apps

Where did I get the NetDooka?

Standard tactics of NetDooka injection are basic for all other ransomware variants. Those are one-day landing websites where users are offered to download and install the free app, so-called bait e-mails and hacktools. Bait emails are a relatively new strategy in malware distribution – you get the e-mail that mimics some normal notifications about shipments or bank service conditions modifications. Within the email, there is an infected MS Office file, or a web link which leads to the exploit landing page.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Preventing it looks quite easy, but still needs a lot of recognition. Malware can hide in different places, and it is far better to prevent it even before it invades your computer than to depend on an anti-malware program. Standard cybersecurity awareness is just an essential item in the modern world, even if your interaction with a computer stays on YouTube videos. That may keep you a lot of money and time which you would spend while searching for a solution.

NetDooka malware technical details

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Generic.4!c
tehtris Generic.Malware
MicroWorld-eScan Gen:Variant.Lazy.100047
CAT-QuickHeal Trojan.Zbot.AM4
ALYac Gen:Variant.Lazy.100047
Cylance Unsafe
Sangfor Trojan.Win32.Kazy.374246
K7AntiVirus Riskware ( 0040eff71 )
Alibaba TrojanSpy:Win32/Ursnif.a474b030
K7GW Riskware ( 0040eff71 )
Cybereason malicious.ada81b
Arcabit Trojan.Lazy.D186CF
Baidu Win32.Trojan.Kryptik.ho
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 Win32/Spy.Ursnif.AA
APEX Malicious
Paloalto generic.ml
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Lazy.100047
NANO-Antivirus Trojan.Win32.Androm.cyclhm
Avast Win32:Crypt-QZF [Trj]
Tencent Win32.Backdoor.Androm.Lhww
Ad-Aware Gen:Variant.Lazy.100047
Sophos ML/PE-A + Mal/Ransom-CO
Comodo Malware@#jwmutpbxi6fq
DrWeb Trojan.KillProc.31695
Zillya Backdoor.Androm.Win32.8396
TrendMicro TROJ_SPNR.0CE314
McAfee-GW-Edition BehavesLike.Win32.Emotet.dc
FireEye Generic.mg.3536d21ada81be50
Emsisoft Gen:Variant.Lazy.100047 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Generic.gyvm
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1237531
Kingsoft Win32.Hack.Androm.ds.(kcloud)
Microsoft TrojanSpy:Win32/Ursnif.gen!K
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Lazy.100047
Cynet Malicious (score: 100)
Acronis suspicious
McAfee PWSZbot-FBSS!3536D21ADA81
MAX malware (ai score=80)
TrendMicro-HouseCall TROJ_SPNR.0CE314
Rising Trojan.Win32.Generic.16BF112B (C64:YzY0OsLnNJV/LMwL)
Yandex Trojan.PWS.Papras!vlWqHzXbER8
Ikarus Trojan.SuspectCRC
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Simda.NEX!tr
BitDefenderTheta Gen:NN.ZexaF.34638.pq0@amF7weki
AVG Win32:Crypt-QZF [Trj]
Panda Trj/Genetic.gen
CrowdStrike win/malicious_confidence_100% (D)

How to remove NetDooka?

About the author

Brendan Smith

Cybersecurity analyst covering malware families, suspicious files, and detection alerts. Brendan focuses on clear explanations of what a warning means, when it may be a false positive, and which cleanup steps are appropriate.

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