Trojan.Agent.CQSQ

Written by Robert Bailey

What is Trojan.Agent.CQSQ infection?

In this short article you will certainly locate concerning the definition of Trojan.Agent.CQSQ as well as its unfavorable influence on your computer. Such ransomware are a kind of malware that is clarified by online fraudulences to require paying the ransom money by a target.

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In the majority of the instances, Trojan.Agent.CQSQ infection will certainly advise its victims to launch funds move for the function of neutralizing the changes that the Trojan infection has presented to the target’s tool.

Trojan.Agent.CQSQ Summary

These modifications can be as complies with:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • A process created a hidden window;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Exhibits behavior characteristic of Nymaim malware;
  • Zeus P2P (Banking Trojan);
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files found on the target’s disk drive — so the victim can no longer make use of the information;
  • Preventing normal accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
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Trojan.Agent.CQSQ

One of the most typical channels where Trojan.Agent.CQSQ Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of user ending up on a resource that holds a malicious software application;

As soon as the Trojan is efficiently injected, it will either cipher the data on the sufferer’s computer or prevent the tool from working in a correct way – while also positioning a ransom note that discusses the need for the sufferers to effect the repayment for the purpose of decrypting the files or restoring the data system back to the preliminary problem. In most circumstances, the ransom note will certainly turn up when the customer restarts the PC after the system has already been damaged.

Trojan.Agent.CQSQ distribution networks.

In numerous corners of the world, Trojan.Agent.CQSQ expands by leaps and bounds. Nonetheless, the ransom money notes and methods of obtaining the ransom money quantity may vary depending upon particular local (regional) setups. The ransom notes and also tricks of extorting the ransom money amount might differ depending on specific regional (local) settings.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software.

    In specific locations, the Trojans often wrongfully report having actually discovered some unlicensed applications made it possible for on the sufferer’s tool. The sharp then demands the individual to pay the ransom.

    Faulty statements about prohibited content.

    In countries where software application piracy is less prominent, this technique is not as reliable for the cyber frauds. Conversely, the Trojan.Agent.CQSQ popup alert might wrongly claim to be deriving from a law enforcement organization as well as will certainly report having located youngster porn or other unlawful data on the gadget.

    Trojan.Agent.CQSQ popup alert may falsely declare to be acquiring from a legislation enforcement establishment and also will report having situated youngster pornography or various other prohibited information on the gadget. The alert will likewise contain a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 746FE736
md5: 9d50c53b9e61b4d6bcd4f7e9ec3fd880
name: 9D50C53B9E61B4D6BCD4F7E9EC3FD880.mlw
sha1: 9987ba598d6ff8c81264c3063adb20e4a160a27b
sha256: ddc7b759b073f51bb67c41aacf0b55fe0167fd6bce7f8ada45d9b828f72c269f
sha512: 5279c717f58d5dce7b3d0e62d028813b3cdc1b4dbae908022a277af31f290aff903c3fcc997b0a9c87c431235f7b5515cf4d82f716c53d9f586dbe80b9f84135
ssdeep: 12288:6Pp2/MsnFMFsNi+igDHwpKjnwXAQNcGitu8tEechZgeW66tKuB5:6x2ksnJY+ZDHwNXAQNbSqeBeW665
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan.Agent.CQSQ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Inject2.63259
MicroWorld-eScan Trojan.Agent.CQSQ
FireEye Generic.mg.9d50c53b9e61b4d6
CAT-QuickHeal Ransom.Cerber.ZZ4
McAfee Trojan-FOIZ!9D50C53B9E61
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Generic.4!c
Sangfor Malware
CrowdStrike win/malicious_confidence_100% (W)
BitDefender Trojan.Agent.CQSQ
K7GW Trojan ( 0051b2281 )
K7AntiVirus Trojan ( 0051b2281 )
BitDefenderTheta Gen:NN.ZexaF.34804.MuW@aSAtqGi
Cyren W32/Nymaim.CI.gen!Eldorado
Symantec Packed.Generic.493
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan-Banker.Win32.GozNym.pef
Alibaba TrojanDownloader:Win32/Kryptik.e04eb06f
NANO-Antivirus Trojan.Win32.Kryptik.evcope
Tencent Malware.Win32.Gencirc.10b36e91
Ad-Aware Trojan.Agent.CQSQ
TACHYON Trojan/W32.Agent.634880.PM
Emsisoft Trojan.Agent.CQSQ (B)
Comodo TrojWare.Win32.Crypt.C@7vajd0
F-Secure Heuristic.HEUR/AGEN.1111254
Zillya Trojan.Kryptik.Win32.1303614
McAfee-GW-Edition BehavesLike.Win32.Trojan.jc
Sophos Mal/Generic-S + Mal/Elenoocka-E
Ikarus Trojan.Win32.Crypt
Jiangmin Trojan.Refinka.ahc
MaxSecure Trojan.Malware.300983.susgen
Avira HEUR/AGEN.1111254
Antiy-AVL Trojan/Win32.Refinka
Microsoft TrojanDownloader:Win32/Nymaim.K
Arcabit Trojan.Agent.CQSQ
ZoneAlarm HEUR:Trojan-Banker.Win32.GozNym.pef
GData Trojan.Agent.CQSQ
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Nymaim.R213858
Acronis suspicious
VBA32 Trojan.Refinka
ALYac Trojan.Agent.CQSQ
MAX malware (ai score=100)
Malwarebytes Trojan.Nymaim
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.GCCF
Rising Trojan.Kryptik!1.AE8F (CLASSIC)
Yandex Trojan.GenAsa!kWyrPVP1imY
SentinelOne Static AI – Malicious PE – Downloader
eGambit Unsafe.AI_Score_97%
Fortinet W32/Kryptik.GKMB!tr
AVG Win32:Malware-gen
Cybereason malicious.b9e61b
Paloalto generic.ml
Qihoo-360 HEUR/QVM19.1.C4F5.Malware.Gen

How to remove Trojan.Agent.CQSQ ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Trojan.Agent.CQSQ files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

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If the guide doesn’t help you to remove Trojan.Agent.CQSQ you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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