Ransom:BAT/DisableDefender.A!dha

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Attention: Your PC is at significant risk due to the detection of the Ransom:BAT/DisableDefender.A!dha malware. This malicious software functions as ransomware, encrypting your files and demanding payment for decryption. Immediate action is necessary to stop its impact.
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You may come across the detection of Ransom:BAT/DisableDefender.A!dha, which is a malware detection on your computer. This detection often occurs as a result of engaging in provoking activities on your computer, such as opening dubious emails, clicking web banners, or installing programs from dubious resources. Once it appears, you have a short time to take action before it initiates its destructive actions. Remember, it is advisable not to wait for these destructive effects.

What is Ransom:BAT/DisableDefender.A!dha virus?

Ransom:BAT/DisableDefender.A!dha operates as ransomware-type malware. It actively searches for files on your disk drives, encrypts them, and demands a ransom in exchange for the decryption key. In addition to locking your documents, this virus also inflicts significant harm to your system. It modifies the networking setups to hinder your access to removal manuals or the download of anti-malware programs. In rare instances, Ransom:BAT/DisableDefender.A!dha may even prevent the launch of anti-malware programs.

Ransom:BAT/DisableDefender.A!dha Summary

In summary, Ransom:BAT/DisableDefender.A!dha virus actions in the infected system are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Anomalous file deletion behavior detected (10+);
  • Dynamic (imported) function loading detected;
  • Enumerates running processes;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A HTTP/S link was seen in a script or command line;
  • Drops a binary and executes it;
  • The binary contains an unknown PE section name indicative of packing;
  • The binary likely contains encrypted or compressed data.;
  • The executable is compressed using UPX;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Deletes its original binary from disk;
  • Created a process from a suspicious location;
  • Creates a copy of itself;
  • Collects information to fingerprint the system;
  • Uses suspicious command line tools or Windows utilities;
  • Encrypting the documents located on the victim’s disk drive — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-malware programs
  • Blocking the launching of installation files of anti-malware programs

Ransomware has been a headache for the last 4 years. It is difficult to imagine a more hazardous malware for both individual users and corporations. The algorithms used in Ransom:BAT/DisableDefender.A!dha (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need more time than our galaxy already exists, and possibly will exist. However, that virus does not do all these horrible things without delay – it can take up to several hours to cipher all of your files. Therefore, seeing the Ransom:BAT/DisableDefender.A!dha detection is a clear signal that you should begin the removal procedure.

Where did I get the Ransom:BAT/DisableDefender.A!dha?

Standard tactics of Ransom:BAT/DisableDefender.A!dha spreading are common for all other ransomware examples. Those are one-day landing web pages where victims are offered to download the free software, so-called bait emails and hacktools. Bait emails are a quite new tactic in malware spreading – you receive the email that mimics some routine notifications about shipments or bank service conditions changes. Within the email, there is an infected MS Office file, or a 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 fairly uncomplicated, however, still demands a lot of recognition. Malware can hide in different places, and it is far better to stop it even before it goes into your computer than to rely upon an anti-malware program. Standard cybersecurity awareness is just an essential item in the modern-day world, even if your relationship with a computer stays on YouTube videos. That may keep you a lot of money and time which you would spend while trying to find a fix guide.

Ransom:BAT/DisableDefender.A!dha malware technical details

File Info:

name: F7B04EB83694EAB061DA.mlw
path: /opt/CAPEv2/storage/binaries/2c88a7bdc01f30db3f0dade89092e7e7c0691ce8fe65708b9f482e92185663bd
crc32: 67CA4E07
md5: f7b04eb83694eab061da08ad4e492eab
sha1: 89ed7b563a8e53604d59bc7f701ee62bb03572e5
sha256: 2c88a7bdc01f30db3f0dade89092e7e7c0691ce8fe65708b9f482e92185663bd
sha512: e61ec1a97296936ae02ef7c1c74e6503094445fb6bd2b17e6239fdc3c1bdb4cc298839eb9dabca1abd216828102aaf5e6d225841863aaaa3f86757c08bb38632
ssdeep: 12288:E6RwQw7OngR7HlZM0/EprtUMLmwdaRrbukjaJ3p:EjOmF20/EHfPK67p
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1F5B42364455931E0C7CA0C384F6F71F2C66A24A206C6B1925FEFCAC1DF3A9D2E3A144B
sha3_384: 41d73474246be9c377629572f929f627155e25f307677369cab9c96697855b03ee56fcfee2a1b982fae856383f388b63
ep_bytes: 60be00f045008dbe0020faff5783cdff
timestamp: 2021-12-05 18:49:38

Version Info:

0: [No Data]

DisableDefender malware is also known as:

Bkav W32.AIDetect.malware2
Lionic Trojan.Win32.Scar.lpjJ
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Fragtor.45302
FireEye Generic.mg.f7b04eb83694eab0
CAT-QuickHeal Trojan.MauvaiseRI.S5244766
McAfee RDN/Generic.cf
Cylance Unsafe
K7AntiVirus Adware ( 005070c51 )
Alibaba Exploit:Win32/BypassUAC.f9520600
K7GW Adware ( 005070c51 )
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Packed.BlackMoon.A potentially unwanted
APEX Malicious
Paloalto generic.ml
ClamAV Win.Dropper.Tiggre-9845940-0
Kaspersky Exploit.Win32.BypassUAC.acfs
BitDefender Gen:Variant.Fragtor.45302
Avast Win32:Evo-gen [Susp]
Ad-Aware Gen:Variant.Fragtor.45302
Emsisoft Gen:Variant.Fragtor.45302 (B)
DrWeb Trojan.Siggen16.422
TrendMicro TROJ_GEN.R002C0WL921
McAfee-GW-Edition BehavesLike.Win32.Trojan.hc
Sophos BlackMoon Packed (PUA)
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_100%
Avira HEUR/AGEN.1135228
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:BAT/DisableDefender.A!dha
GData Win32.Trojan.Agent.WP
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win.Generic.C4710252
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34084.FmGfayoWe1dH
ALYac Gen:Variant.Fragtor.45302
MAX malware (ai score=87)
VBA32 BScope.Trojan.Blamon
TrendMicro-HouseCall TROJ_GEN.R002C0WL921
Rising Trojan.Injector!1.A1C3 (CLASSIC)
Yandex Exploit.BypassUAC!JAyjpGTBwAw
Ikarus Trojan.MSIL.Small
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/CoinMiner.ESFJ!tr
AVG Win32:Evo-gen [Susp]
Cybereason malicious.83694e
Panda Trj/GdSda.A

How to remove the DisableDefender.A!dha malware?

Ransom:BAT/DisableDefender.A!dha malware is incredibly hard to remove by hand. It places its documents in numerous places throughout the disk, and can restore itself from one of the parts. Furthermore, various alterations in the windows registry, networking configurations and also Group Policies are fairly hard to discover and revert to the initial. It is better to use a specific tool – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the most ideal for malware elimination goals.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its databases updated practically every hour. In addition, it does not have such problems and weakness as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware suitable for taking out malware of any kind.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of [SHORT_NAME] the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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