Backdoor.Win32.Lotok.fnz (file analysis)

The Backdoor.Win32.Lotok.fnz 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 Backdoor.Win32.Lotok.fnz virus can do?

• Behavioural detection: Executable code extraction – unpacking
• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Presents an Authenticode digital signature
• Creates RWX memory
• NtSetInformationThread: attempt to hide thread from debugger
• Possible date expiration check, exits too soon after checking local time
• Dynamic (imported) function loading detected
• Enumerates the modules from a process (may be used to locate base addresses in process injection)
• Reads data out of its own binary image
• CAPE extracted potentially suspicious content
• The binary contains an unknown PE section name indicative of packing
• The binary likely contains encrypted or compressed data.
• Authenticode signature is invalid
• Uses Windows utilities for basic functionality
• Checks for the presence of known windows from debuggers and forensic tools
• Installs itself for autorun at Windows startup
• CAPE detected the EnigmaStub malware family
• Checks for the presence of known devices from debuggers and forensic tools
• Anomalous binary characteristics
• Uses suspicious command line tools or Windows utilities

How to determine Backdoor.Win32.Lotok.fnz?

File Info:
name: A77F9E36A2344A5F448C.mlwpath: /opt/CAPEv2/storage/binaries/6b88298579108461837e40cab42909d156bacb520bbb35f29194f537226bc82dcrc32: 08362EC2md5: a77f9e36a2344a5f448c7d677d06b8eesha1: fb5e20bd6d1e06c24771cd86ed101156c7133facsha256: 6b88298579108461837e40cab42909d156bacb520bbb35f29194f537226bc82dsha512: 0debd7e67ebd04c3b1f77cac5508b6e0239524eb1a30b67ebfd90dafbc3edfd349a21193e72e1d5027b0864dbd7de06cf91ad86dce85c211cc01d2c1180a633fssdeep: 24576:S/YMi6FZwSCDNdK+KJ1mVuiOEKF+Ubcs/G4RONd3TjUpE:u25djym77kFHOH3/cEtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1563533888D20F45AE9879EBCD455C62CFCA4F2937DD509836CA371D67A46F343ECA122sha3_384: 9b62a33eb576acbb3be331d8f9e10b04964a89a80bbef7295036ad35d8ca367d753cffb3b366a707cc0077e3d125dd49ep_bytes: 558bec83c4f0b800104000e801000000timestamp: 2020-06-22 16:35:16
Version Info:
0: [No Data]

Backdoor.Win32.Lotok.fnz also known as:

How to remove Backdoor.Win32.Lotok.fnz?

• 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.