Trojan:Win32/Gupboot.B malicious file

The Trojan:Win32/Gupboot.B 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.

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What Trojan:Win32/Gupboot.B virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Behavioural detection: Executable code extraction – unpacking
• Attempts to connect to a dead IP:Port (2 unique times)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Possible date expiration check, exits too soon after checking local time
• Creates RWX memory
• Dynamic (imported) function loading detected
• Enumerates running processes
• Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
• Reads data out of its own binary image
• A process created a hidden window
• CAPE extracted potentially suspicious content
• Drops a binary and executes it
• Unconventionial language used in binary resources: Korean
• The binary contains an unknown PE section name indicative of packing
• Executable file is packed/obfuscated with MPRESS
• Authenticode signature is invalid
• Uses Windows utilities for basic functionality
• Uses Windows utilities for basic functionality
• A process attempted to delay the analysis task by a long amount of time.
• Created a process from a suspicious location
• Anomalous binary characteristics

How to determine Trojan:Win32/Gupboot.B?

File Info:
name: 0DADF53E00D4541CAAB2.mlw
path: /opt/CAPEv2/storage/binaries/30283858c34dfb5d45626e3f1bce1d53bd75b51f99fcdbf80c380582d56ffde8
crc32: F6A369FA
md5: 0dadf53e00d4541caab25a77235d1e97
sha1: 8864dba07db5c4a3eacd8274d48a95a06655996e
sha256: 30283858c34dfb5d45626e3f1bce1d53bd75b51f99fcdbf80c380582d56ffde8
sha512: 9545b9d5e4c264995a4cd29b7fce2fcc2565b7f26110d55bd67b6eea9c6698297f7e3d4e6a6610aa545d0d3b9b32045dbaf6c9668df05ae1ebadacfd64725d2c
ssdeep: 12288:XwCXnLquXU99ICwj7xrcqPkePh+RvMaBlYJQCe2m9Or:AFn9pwjFMePh+RpBlU69Or
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1B775DF257A409071E7A90B714816E6B50D79AC3D06A8E5CFF7783E3A5D312D38A7328F
sha3_384: c0cd7d13c2b1597dab52b455172bcef4b5fe97a099d2cc1eb6b1577fbbf06270513287c5ee660b59998319bf3b4c3728
ep_bytes: e8b0750000e979feffff8bff558bec81
timestamp: 2012-11-09 07:14:38

Version Info:
CompanyName: Apple
FileDescription: Apple iCloud
FileVersion: 1, 0, 0, 85
InternalName: Apple New Ipad
LegalCopyright: Copyright (C) 2012
OriginalFilename: app stroe
ProductName: Apple iPad
ProductVersion: 1, 0, 0, 85
Translation: 0x0412 0x04b0

Trojan:Win32/Gupboot.B also known as:

How to remove Trojan:Win32/Gupboot.B?

• 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.