Should I remove “Win32/Kovter.B”?

The Win32/Kovter.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 Win32/Kovter.B virus can do?

• Behavioural detection: Executable code extraction – unpacking
• Sample contains Overlay data
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• CAPE extracted potentially suspicious content
• Unconventionial language used in binary resources: Basque
• The binary likely contains encrypted or compressed data.
• Authenticode signature is invalid
• Behavioural detection: Injection (Process Hollowing)
• Behavioural detection: Injection (inter-process)
• Behavioural detection: Injection with CreateRemoteThread in a remote process
• Attempts to identify installed analysis tools by registry key
• Checks the version of Bios, possibly for anti-virtualization
• Checks the presence of disk drives in the registry, possibly for anti-virtualization
• Detects VirtualBox through the presence of a file
• Detects VirtualBox through the presence of a registry key
• Detects VMware through the presence of a file
• Detects VMware through the presence of a registry key
• Detects Virtual PC through the presence of a file
• Detects Virtual PC through the presence of a registry key
• Attempts to modify browser security settings
• Collects information to fingerprint the system
• Anomalous binary characteristics

How to determine Win32/Kovter.B?

File Info:
name: 65CB7665F6FDA652D59B.mlw
path: /opt/CAPEv2/storage/binaries/3c87fc40bea78e0986007e1520ad68a6964ab2957ac08f45f68c149996ab86ee
crc32: 1D6C22E9
md5: 65cb7665f6fda652d59b1a85a88cb2eb
sha1: 0b20bbdb3a76bbfa59029dffad38478a9dcf92af
sha256: 3c87fc40bea78e0986007e1520ad68a6964ab2957ac08f45f68c149996ab86ee
sha512: fa193dca12ee97b84751501371d7f1c0b0740e890c9c5a1e5847149768c1c70c149ee6121c2c7ddf3b3c62b4fafcbe684b190c0252ad974cb1a9ef2c0aad9c9b
ssdeep: 6144:Ym158BF4T0DzBuY0a0i++sVCzS/2i9sSRSkR8tLzg5TlmzJP:P1u+0zBuYFn++sb2iCqR8pnzJP
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T12074DFD1A767E9A7CDA0C2741F62D2B50BAD7B5764404B2FF4482E1838373C1A8A4BDD
sha3_384: ad1bc7efd69e8abd0d5dbb1abde2224e83ce9cad30a21078c24f93c4dd00d052254e1798a3409321a254ae4f858a3785
ep_bytes: 68ccfc4300e8f0ffffff000000000000
timestamp: 2015-06-03 07:36:42

Version Info:
Translation: 0x042d 0x04b0
Comments: Lebensmittelsektors
CompanyName: Fibrillatore
FileDescription: Fibrillatore
ProductName: Fibrillatore
FileVersion: 3.01.0005
ProductVersion: 3.01.0005
InternalName: Fibrillatore
OriginalFilename: Fibrillatore.exe

Win32/Kovter.B also known as:

How to remove Win32/Kovter.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.