Win32/Injector.COAB

Written by Robert Bailey

What is Win32/Injector.COAB infection?

In this post you will locate about the meaning of Win32/Injector.COAB and also its adverse impact on your computer. Such ransomware are a kind of malware that is elaborated by on-line scams to require paying the ransom by a victim.

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In the majority of the instances, Win32/Injector.COAB infection will certainly advise its sufferers to launch funds move for the purpose of neutralizing the changes that the Trojan infection has actually introduced to the victim’s gadget.

Win32/Injector.COAB Summary

These modifications can be as adheres to:

  • 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);
  • Compression (or decompression);
  • 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.
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Unconventionial language used in binary resources: Belarusian;
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Attempts to delete volume shadow copies;
  • Exhibits behavior characteristic of Alphacrypt/Teslacrypt ransomware;
  • Modifies boot configuration settings;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Exhibits possible ransomware file modification behavior;
  • Writes a potential ransom message to disk;
  • Attempts to identify installed AV products by registry key;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Creates a known TeslaCrypt/AlphaCrypt ransomware decryption instruction / key file.;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers situated on the target’s hard disk drive — so the sufferer can no more use the data;
  • Preventing regular access 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.

Win32/Injector.COAB

The most normal channels whereby Win32/Injector.COAB Ransomware are injected are:

  • By means of phishing emails;
  • As a consequence of individual winding up on a resource that organizes a malicious software application;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the victim’s computer or protect against the tool from functioning in a correct manner – while also positioning a ransom money note that discusses the need for the sufferers to effect the payment for the purpose of decrypting the papers or bring back the file system back to the preliminary condition. In many instances, the ransom note will turn up when the customer restarts the PC after the system has currently been damaged.

Win32/Injector.COAB distribution networks.

In different corners of the globe, Win32/Injector.COAB grows by leaps and also bounds. However, the ransom money notes and tricks of obtaining the ransom money amount might differ depending on particular regional (local) setups. The ransom money notes as well as tricks of obtaining the ransom money quantity might differ depending on particular local (local) settings.

Ransomware injection

For instance:

    Faulty signals about unlicensed software.

    In particular areas, the Trojans often wrongfully report having actually identified some unlicensed applications enabled on the target’s device. The sharp then demands the customer to pay the ransom.

    Faulty statements regarding prohibited content.

    In nations where software application piracy is much less preferred, this technique is not as effective for the cyber scams. Additionally, the Win32/Injector.COAB popup alert might wrongly declare to be originating from a police establishment and will certainly report having situated child porn or other illegal information on the tool.

    Win32/Injector.COAB popup alert might wrongly declare to be obtaining from a regulation enforcement institution and will report having situated kid porn or various other prohibited information on the device. The alert will in a similar way contain a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 6C8C9A9A
md5: 0f0ad1f2d8af21607e6ab954b82227cc
name: 0F0AD1F2D8AF21607E6AB954B82227CC.mlw
sha1: 8874734b17c67ee5025bbc552480af26aff8321d
sha256: be5d7e6eacd849414443fdb6e56c9800a5ec4ca5db842a793be7f14be5203a9f
sha512: e300b2454d357e5e581bf1dcf8d839f630e646bbafdd78e5025f78247180e3a2b0902916188f1d854025255e48583c0261d18cd34bde44242932df1ed219050c
ssdeep: 6144:lclgBCoMvJpr3IZVXBRVRC3BMaXGRTuKYAyqeT6y52cZuvrvD1hNVWfO6:l5C9Jpr3I3XBRi3WaXGEKXnW6RjPkv
type: PE32 executable (console) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Warden (C) 2012
InternalName: Tensor
FileDescription: Roadway
OriginalFilename: Unsellable.exe
CompanyName: Actiontec Electronics Inc.

Win32/Injector.COAB also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0001140e1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.3158
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Crowti.MUE.B5
ALYac Trojan.Agent.BOWV
Cylance Unsafe
Zillya Trojan.Fareit.Win32.12731
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Yakes.986e74fa
K7GW Trojan ( 0001140e1 )
Cybereason malicious.2d8af2
Baidu Win32.Trojan.Filecoder.k
Cyren W32/Trojan.EEQL-8964
Symantec Ransom.TeslaCrypt
ESET-NOD32 a variant of Win32/Injector.COAB
APEX Malicious
Avast Win32:TeslaCrypt-AB [Trj]
Kaspersky Trojan.Win32.Yakes.nrhi
BitDefender Trojan.Agent.BOWV
NANO-Antivirus Trojan.Win32.Encoder.dzcdhl
ViRobot Trojan.Win32.TeslaCrypt.Gen.A
SUPERAntiSpyware Trojan.Agent/Gen-Dropper
MicroWorld-eScan Trojan.Agent.BOWV
Tencent Malware.Win32.Gencirc.10c4a2c8
Ad-Aware Trojan.Agent.BOWV
Sophos ML/PE-A + Mal/Tinba-Y
Comodo Malware@#36dkamw8118zv
BitDefenderTheta Gen:NN.ZexaF.34628.vu0@aCoQqrdc
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CRYPTESLA.SMJ4
McAfee-GW-Edition Ransomware-FBH!0F0AD1F2D8AF
FireEye Generic.mg.0f0ad1f2d8af2160
Emsisoft Trojan.Agent.BOWV (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Yakes.dzu
Webroot W32.Trojan.Necurs
Avira HEUR/AGEN.1108567
eGambit Generic.Malware
Microsoft VirTool:Win32/CeeInject.gen!E
Arcabit Trojan.Agent.BOWV
GData Trojan.Agent.BOWV
TACHYON Trojan/W32.Yakes.352256.G
AhnLab-V3 Trojan/Win32.Teslacrypt.R169988
Acronis suspicious
McAfee Ransomware-FBH!0F0AD1F2D8AF
MAX malware (ai score=100)
VBA32 Trojan.Yakes
Malwarebytes Malware.Heuristic.1001
Panda Trj/RansomCrypt.E
TrendMicro-HouseCall Ransom_CRYPTESLA.SMJ4
Rising Trojan.Ransom-Tesla!1.A322 (CLOUD)
Yandex Trojan.Yakes!yeXziCBuNRo
Ikarus Trojan.Win32.Injector
Fortinet W32/Injector.COBY!tr
AVG Win32:TeslaCrypt-AB [Trj]
Qihoo-360 Win32/Trojan.CeeInject.HxQBEpsA

How to remove Win32/Injector.COAB 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

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

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.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

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 Win32/Injector.COAB 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?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Injector.COAB 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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