Win32/Remtasu.O Virus Removal

Spectating the Win32/Remtasu.O detection name means that your system is in big danger. This virus can correctly be named as ransomware – type of malware which ciphers your files and asks you to pay for their decryption. Stopping it requires some specific steps that must be taken as soon as possible.

Win32/Remtasu.O detection is a malware detection you can spectate in your system. It generally appears after the provoking procedures on your computer – opening the untrustworthy email messages, clicking the advertisement in the Internet or installing the program from untrustworthy sources. From the second it appears, you have a short time to do something about it before it begins its malicious activity. And be sure – it is much better not to wait for these malicious things.

What is Win32/Remtasu.O virus?

Win32/Remtasu.O is ransomware-type malware. It looks for the documents on your computer, encrypts it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your files inaccessible, this virus additionally does a lot of harm to your system. It alters the networking settings in order to prevent you from looking for the removal tutorials or downloading the antivirus. In some cases, Win32/Remtasu.O can even stop the launching of anti-malware programs.

Win32/Remtasu.O Summary

In summary, Win32/Remtasu.O malware actions in the infected PC are next:

  • CAPE extracted potentially suspicious content;
  • 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;
  • Behavioural detection: Injection (inter-process);
  • Behavioural detection: Injection with CreateRemoteThread in a remote process;
  • CAPE detected the Xtreme malware family;
  • Attempts to modify proxy settings;
  • CAPE detected injection into a browser process, likely for Man-In-Browser (MITB) infostealing;
  • Creates a copy of itself;
  • Touches a file containing cookies, possibly for information gathering;
  • Creates known XtremeRAT mutexes;
  • Yara detections observed in process dumps, payloads or dropped files;
  • Ciphering the documents kept on the target’s disk drive — so the victim cannot open these files;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of anti-virus apps

Ransomware has been a headache for the last 4 years. It is hard to realize a more harmful virus for both individual users and businesses. The algorithms used in Win32/Remtasu.O (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need a lot more time than our galaxy already exists, and possibly will exist. But that malware does not do all these bad things immediately – it may take up to a few hours to cipher all of your files. Thus, seeing the Win32/Remtasu.O detection is a clear signal that you should begin the clearing procedure.

Where did I get the Win32/Remtasu.O?

Typical ways of Win32/Remtasu.O distribution are standard for all other ransomware examples. Those are one-day landing websites where users are offered to download and install the free program, so-called bait emails and hacktools. Bait emails are a relatively new tactic in malware distribution – you receive the email that simulates some standard notifications about shippings or bank service conditions changes. Within the e-mail, there is a corrupted MS Office file, or a link which opens the exploit landing site.

Malicious email spam

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

Preventing it looks quite simple, but still demands a lot of recognition. Malware can hide in different places, and it is far better to stop it even before it invades your PC than to rely upon an anti-malware program. Standard cybersecurity knowledge is just an important thing in the modern world, even if your interaction with a computer remains on YouTube videos. That may keep you a great deal of money and time which you would spend while trying to find a solution.

Win32/Remtasu.O malware technical details

File Info:

name: F4418705CEADD4DE736B.mlwpath: /opt/CAPEv2/storage/binaries/ff9159b1ada580a7286db0951a7f4af31196424a320562acd027a51b5c62af88crc32: 4513A1A3md5: f4418705ceadd4de736b1ec3cd306626sha1: 396f60d2c16ff71f57ed68fc0cd18288757c4862sha256: ff9159b1ada580a7286db0951a7f4af31196424a320562acd027a51b5c62af88sha512: 3216f89571888fe3b2e8847f00b1f3b20c5027fbfb6e0be2815cbaec8343bea901a829d3f092f47b3966b3c1664b94c90e580b44f77712ec928daf59204e7f6bssdeep: 384:1+nD2eetIgFttzfA8WFRGlm/L5wp2ZDvDqVJMoz7x4JbpL1SkLLR:1Y2PtxFt9m7GSL5UVJtz7xcpL1VJtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T19A92C00B3ACD1C11EA6349B85B80734BE709BC2563EB47AD9BB4518F7DBF4900E5543Asha3_384: eff13df1ac0bddc41bd192cb455b2649821c25c33ffabc03ac10c9b76701865e2f84086510310152e6238362497144b7ep_bytes: 60be0000c9008dbe0010ffff57eb0b90timestamp: 1992-06-19 22:22:17

Version Info:

0: [No Data]

Win32/Remtasu.O also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Sasfis.4!c
Elastic malicious (moderate confidence)
MicroWorld-eScan Gen:Variant.Ransom.Loki.9339
CAT-QuickHeal Backdoor.Xtrat.AA8
Skyhigh BehavesLike.Win32.Generic.mc
McAfee GenericRXAA-AA!F4418705CEAD
Malwarebytes Trojan.Agent
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0038dcf91 )
Alibaba TrojanDropper:Win32/Dorv.e6ac1379
K7GW Trojan ( 0038dcf91 )
CrowdStrike win/malicious_confidence_100% (D)
BitDefenderTheta AI:Packer.2BCE169621
VirIT Trojan.Win32.Cryptic.CWS
Symantec W32.Extrat
ESET-NOD32 a variant of Win32/Remtasu.O
APEX Malicious
ClamAV Win.Trojan.XtremeRAT-9817317-0
Kaspersky Trojan-Dropper.Win32.Injector.jovz
BitDefender Gen:Variant.Ransom.Loki.9339
NANO-Antivirus Trojan.Win32.TrjGen.rivlr
Avast Win32:Xtrat-I [Trj]
Tencent Malware.Win32.Gencirc.13c17519
Emsisoft Gen:Variant.Ransom.Loki.9339 (B)
Baidu Win32.Trojan.Remtasu.a
F-Secure Trojan.TR/Downloader.Gen
DrWeb Trojan.Siggen6.54869
VIPRE Gen:Variant.Ransom.Loki.9339
TrendMicro WORM_XTREME.SMM
Trapmine malicious.high.ml.score
FireEye Generic.mg.f4418705ceadd4de
Sophos Mal/DelfInj-A
Ikarus Backdoor.Win32.Xtreme
Jiangmin Trojan.Generic.llsu
Webroot W32.Trojan.Gen
Google Detected
Avira TR/Downloader.Gen
Varist W32/Xtrat.C.gen!Eldorado
Antiy-AVL Trojan/Win32.Sasfis
Kingsoft malware.kb.b.999
Microsoft Trojan:Win32/Dorv.A
Xcitium Backdoor.Win32.Xbot.AZC@4ncsys
Arcabit Trojan.Ransom.Loki.D247B
ViRobot Trojan.Win32.A.Sasfis.23678
ZoneAlarm Trojan-Dropper.Win32.Injector.jovz
GData Win32.Trojan.PSE.16VWBSU
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Scar.R15220
VBA32 BScope.Backdoor.Xtreme
ALYac Gen:Variant.Ransom.Loki.9339
MAX malware (ai score=100)
Cylance unsafe
Panda Generic Malware
TrendMicro-HouseCall WORM_XTREME.SMM
Rising Backdoor.Xtrat!1.6A25 (CLASSIC)
Yandex Trojan.GenAsa!T/U8U9BUJ1Y
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Xtreme.B!tr
AVG Win32:Xtrat-I [Trj]
Cybereason malicious.2c16ff
DeepInstinct MALICIOUS

How to remove Win32/Remtasu.O?

About the author

Robert Bailey

Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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