How to remove “TrojanDownloader.Deyma”?

The TrojanDownloader.Deyma 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 TrojanDownloader.Deyma virus can do?

• Behavioural detection: Executable code extraction – unpacking
• SetUnhandledExceptionFilter detected (possible anti-debug)
• At least one process apparently crashed during execution
• Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Possible date expiration check, exits too soon after checking local time
• NtSetInformationThread: attempt to hide thread from debugger
• Guard pages use detected – possible anti-debugging.
• A process attempted to delay the analysis task.
• Dynamic (imported) function loading detected
• Performs HTTP requests potentially not found in PCAP.
• Enumerates running processes
• Expresses interest in specific running processes
• Reads data out of its own binary image
• A process created a hidden window
• CAPE extracted potentially suspicious content
• Executed a very long command line or script command which may be indicative of chained commands or obfuscation
• Drops a binary and executes it
• Looks up the external IP address
• Authenticode signature is invalid
• A scripting utility was executed
• Uses Windows utilities for basic functionality
• Uses Windows utilities for basic functionality
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Detects Sandboxie through the presence of a library
• Detects Avast Antivirus through the presence of a library
• Behavioural detection: Injection (inter-process)
• Checks for the presence of known windows from debuggers and forensic tools
• Created a process from a suspicious location
• Steals private information from local Internet browsers
• Collects and encrypts information about the computer likely to send to C2 server
• Network activity contains more than one unique useragent.
• The following process appear to have been packed with Themida: Fri1508623be2dc154.exe, tkools.exe
• Installs itself for autorun at Windows startup
• Writes a potential ransom message to disk
• A process sent information about the computer to a remote location.
• A script process created a new process
• Forces a created process to be the child of an unrelated process
• Creates a hidden or system file
• CAPE detected the OnlyLogger malware family
• Attempts to identify installed AV products by installation directory
• Checks the version of Bios, possibly for anti-virtualization
• Checks the CPU name from registry, possibly for anti-virtualization
• Checks the presence of disk drives in the registry, possibly for anti-virtualization
• Detects VirtualBox through the presence of a registry key
• Attempts to modify proxy settings
• Appears to use command line obfuscation
• Accessed credential storage registry keys
• Attempts to disable Windows Defender
• Attempts to modify Windows Defender using PowerShell
• Harvests cookies for information gathering
• Attempts to execute suspicious powershell command arguments
• Collects information to fingerprint the system
• Uses suspicious command line tools or Windows utilities

Related domains:

How to determine TrojanDownloader.Deyma?

File Info:
name: 5c4456803b09ab29c528d0cepath: /opt/CAPEv2/storage/binaries/5c4456803b09ab29c528d0ceeabed717af4b40fc8154a0f04eeea453bdf553edcrc32: 4449601Bmd5: 2ec86535933f0b0a03d936f0718bbc5csha1: 17eb6f182eef7ae3cc5d1afae97585a827ec5a05sha256: 5c4456803b09ab29c528d0ceeabed717af4b40fc8154a0f04eeea453bdf553edsha512: 21628f8849545430026f13102b4668f59cba58da7541d61cd9b955cb3932550d8be4c34d4ab2a53a7391e074304d92d65a890ea6179c791e1bed854b671197f5ssdeep: 393216:JQQbfhPKkPKAma9Mrb7L/8A7OqHwCLjqfKlZG9KKQ0iB6V:JQAft/KAn9uUAfPLjqfK2iUtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1BBE6334506C5C3C9C2BFB276A515CC6C675A0219EA40CE99275A6BCEA193B34CF1F32Fsha3_384: fa5b6df6082ff6b530b5a95c82149574bd1a624104330800d65ad950d1db0cd962f883cbe94f4247e2c485246645efe1ep_bytes: 81ecd40200005356576a205f33db6801timestamp: 2020-08-01 02:44:18
Version Info:
0: [No Data]

TrojanDownloader.Deyma also known as:

How to remove TrojanDownloader.Deyma?

• 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.