TrojanDropper:Win32/Surldoe!A Virus Removal

Spectating the TrojanDropper:Win32/Surldoe!A detection name means that your PC is in big danger. This computer virus can correctly be identified as ransomware – type of malware which encrypts your files and asks you to pay for their decryption. Removing it requires some specific steps that must be done as soon as possible.

TrojanDropper:Win32/Surldoe!A detection is a malware detection you can spectate in your system. It generally shows up after the preliminary actions on your PC – opening the suspicious e-mail messages, clicking the advertisement in the Internet or setting up the program from suspicious resources. From the instance it appears, you have a short time to do something about it before it starts its harmful action. And be sure – it is far better not to await these harmful actions.

What is TrojanDropper:Win32/Surldoe!A virus?

TrojanDropper:Win32/Surldoe!A is ransomware-type malware. It looks for the documents on your disk drives, ciphers it, and then asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this virus also does a lot of damage to your system. It changes the networking settings in order to avoid you from reading the elimination guides or downloading the anti-malware program. Sometimes, TrojanDropper:Win32/Surldoe!A can even stop the launching of anti-malware programs.

TrojanDropper:Win32/Surldoe!A Summary

In summary, TrojanDropper:Win32/Surldoe!A malware activities in the infected computer are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • 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;
  • Behavioural detection: Injection (inter-process);
  • Checks for the presence of known windows from debuggers and forensic tools;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Checks the version of Bios, possibly for anti-virtualization;
  • Detected Armadillo packer using a known mutex;
  • Detected Armadillo packer using a known registry key;
  • Attempts to interact with an Alternate Data Stream (ADS);
  • Created a service that was not started;
  • Collects information to fingerprint the system;
  • Installs WinPCAP;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Ciphering the files kept on the target’s disk drives — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-malware apps
  • Blocking the launching of installation files of anti-malware apps

Ransomware has been a major problem for the last 4 years. It is difficult to imagine a more harmful virus for both individuals and businesses. The algorithms used in TrojanDropper:Win32/Surldoe!A (generally, 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 actually exists, and possibly will exist. But that virus does not do all these unpleasant things instantly – it can require up to a few hours to cipher all of your files. Hence, seeing the TrojanDropper:Win32/Surldoe!A detection is a clear signal that you need to begin the clearing procedure.

Where did I get the TrojanDropper:Win32/Surldoe!A?

Usual methods of TrojanDropper:Win32/Surldoe!A spreading are usual for all other ransomware examples. Those are one-day landing web pages where users are offered to download the free software, so-called bait emails and hacktools. Bait e-mails are a quite modern method in malware spreading – you get the email that imitates some regular notifications about shippings or bank service conditions updates. Inside of the e-mail, there is a corrupted MS Office file, or a link which leads to the exploit landing site.

Malicious email spam

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

Avoiding it looks quite easy, however, still demands a lot of focus. Malware can hide in different places, and it is better to stop it even before it gets into your system than to rely upon an anti-malware program. Common cybersecurity awareness is just an important item in the modern world, even if your interaction with a PC remains on YouTube videos. That may keep you a lot of money and time which you would certainly spend while looking for a solution.

TrojanDropper:Win32/Surldoe!A malware technical details

File Info:

name: F30FDE8077316DD20E78.mlwpath: /opt/CAPEv2/storage/binaries/0f5739fec34bfdd5783e0227e386da060fed71b9ed076c93fa1a883365f7a02fcrc32: E96235EFmd5: f30fde8077316dd20e78ec0a240e4ac0sha1: 628607bfb34166e0bdb68440954fb48a0bdb459fsha256: 0f5739fec34bfdd5783e0227e386da060fed71b9ed076c93fa1a883365f7a02fsha512: 4153d4480d99688a0ef5a45a97b8a5c5af016bd556924583850c227943ab1b82e2958da8f3de51c3f9870be8dc5a52fc7ddbb66ddb521538ae8f3a7e3daffa63ssdeep: 24576:oTr7JB5IFJz07GuoUVNZpbq08VfsfpUztGVM+gzHugidSqunQe:ojJB5CJz07+UnZp4tLGVMZugidSlQtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1C15523924045A1E4FBD32DF0562A76E4464B70271A4F73528F27CDD8DAB2DDBCB8290Bsha3_384: c5a800a946647b8c862cd55ba74e4a558d9815578cbb39c9c700db974822180e8522f9150b56af7d145a3b4bf85ededfep_bytes: 60be006096008dbe00b0a9ff5783cdfftimestamp: 1992-06-19 22:22:17

Version Info:

0: [No Data]

TrojanDropper:Win32/Surldoe!A also known as:

Lionic Trojan.Win32.KGen.kZ3j
tehtris Generic.Malware
MicroWorld-eScan Gen:Variant.Jaik.46054
FireEye Generic.mg.f30fde8077316dd2
Skyhigh GenericRXGB-VR!BDA95B1ACA8B
McAfee Artemis!F30FDE807731
Malwarebytes Malware.Heuristic.2047
VIPRE Gen:Variant.Jaik.46054
Sangfor Trojan.Win32.Surldoe.gen!A
K7AntiVirus Trojan ( 0055e3dd1 )
BitDefender Gen:Variant.Jaik.46054
K7GW Trojan ( 0055e3dd1 )
BitDefenderTheta AI:Packer.AFFE330A1F
Symantec ML.Attribute.HighConfidence
Elastic malicious (moderate confidence)
ESET-NOD32 a variant of Win32/TrojanDropper.Delf.NQG
Cynet Malicious (score: 100)
APEX Malicious
ClamAV Win.Malware.Vundo-9850571-0
Kaspersky Backdoor.Win32.SdBot.pyv
Alibaba TrojanDropper:Win32/SdBot.f9ab4c59
NANO-Antivirus Trojan.Win32.Bifrose.beqgh
ViRobot Backdoor.Win32.IRCBot.1377792
Rising Backdoor.SdBot!8.1E8 (CLOUD)
Sophos Mal/Generic-S
F-Secure Dropper.DR/Delphi.Gen
DrWeb BackDoor.Pigeon.12912
Zillya Backdoor.Hupigon.Win32.83993
TrendMicro BKDR_SDBOT.RO
Trapmine malicious.high.ml.score
Emsisoft Gen:Variant.Jaik.46054 (B)
Ikarus Trojan.Win32.ProcessHijack
GData Gen:Variant.Jaik.46054
Jiangmin Backdoor.SdBot.lf
Webroot W32.Malware.Gen
Varist W32/Backdoor.NFES-9296
Avira DR/Delphi.Gen
Antiy-AVL Trojan[Backdoor]/Win32.SdBot
Xcitium TrojWare.Win32.TrojanDropper.Agent.~YCA@197ro
Arcabit Trojan.Jaik.DB3E6
ZoneAlarm Backdoor.Win32.SdBot.pyv
Microsoft TrojanDropper:Win32/Surldoe.gen!A
Google Detected
AhnLab-V3 Worm/Win32.IRCBot.C39679
VBA32 Backdoor.SdBot
ALYac Gen:Variant.Jaik.46054
DeepInstinct MALICIOUS
Cylance unsafe
Panda Generic Malware
TrendMicro-HouseCall BKDR_SDBOT.RO
Tencent Backdoor.Win32.Sdbot.pyv
Yandex Worm.SdBot!hpiJ3e4Wuhs
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.804895.susgen
Fortinet W32/Generic.AC.1F068E!tr
AVG Win32:Evo-gen [Trj]
Avast Win32:Evo-gen [Trj]
CrowdStrike win/malicious_confidence_100% (W)

How to remove TrojanDropper:Win32/Surldoe!A?

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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