What is “Trojan-Downloader.Win32.Bitser.emz”?

The Trojan-Downloader.Win32.Bitser.emz is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

What Trojan-Downloader.Win32.Bitser.emz virus can do?

• Behavioural detection: Executable code extraction – unpacking
• Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution
• Sample contains Overlay data
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Presents an Authenticode digital signature
• 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
• Authenticode signature is invalid
• A scripting utility was executed
• Uses Windows utilities for basic functionality
• Uses Windows utilities for basic functionality
• Appears to use command line obfuscation
• Deletes executed files from disk
• Attempts to modify Windows Defender using PowerShell
• Harvests cookies for information gathering
• Powershell arguments were seen on a command line but powershell.exe was not called. Likely indictive of renamed/obfuscated powershell.exe or defining arguments in variables for later use
• Uses suspicious command line tools or Windows utilities

How to determine Trojan-Downloader.Win32.Bitser.emz?

File Info:
name: E17A6AAAFA99F59B2545.mlwpath: /opt/CAPEv2/storage/binaries/f1c922056cc695456d7de8d27143006ad44dd7a79cf080f613570f91fa8f0e82crc32: AC5E4D7Emd5: e17a6aaafa99f59b25459363b6eb58fdsha1: aaa0fe203591fd25ca33e3fd06c99991352bd0ffsha256: f1c922056cc695456d7de8d27143006ad44dd7a79cf080f613570f91fa8f0e82sha512: 70b26b54bf5e4de62381bdd1724b6ff91699e88401a21efca623dd00aa88fed373c193a58992b97d7ab63a4640c30194fd3f33e5630d1d5407520c7c5edda2a9ssdeep: 24576:L7FUDowAyrTVE3U5FZTk2Au7vfNzl/m+9KXSQqo4ERwkea7XCJKjaJZ:LBuZrEUlQKTngXSvEvegCJfZtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T19E75BE3FB268653ED9AE0B3245B39320997BBB61B81B8C1E47F4480DCF664701E3B655sha3_384: 28f192df212fcc9cdc1b3f2c94c8576e9eaabbbb87789e126950cf604d460e3b4eb88f6f991b2e37ded01549f9264197ep_bytes: 558bec83c4a453565733c08945c48945timestamp: 2022-04-14 16:10:23
Version Info:
Comments: This installation was built with Inno Setup.CompanyName: ember.editor.cloud.hetzer.to.bard.exe                       FileDescription: Monagami Vendor GUI Setup                                   FileVersion:                     LegalCopyright:                                                                                                     OriginalFileName:                                                   ProductName: Monagami Vendor GUI                                         ProductVersion: 1.0.0.0                                           Translation: 0x0000 0x04b0

Trojan-Downloader.Win32.Bitser.emz also known as:

How to remove Trojan-Downloader.Win32.Bitser.emz?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.