Categories: Backdoor

How to remove “Backdoor:Win32/Zegost.DE!bit”?

The Backdoor:Win32/Zegost.DE!bit 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 Backdoor:Win32/Zegost.DE!bit virus can do?

  • At least one process apparently crashed during execution
  • Attempts to connect to a dead IP:Port (3 unique times)
  • Detected script timer window indicative of sleep style evasion
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Performs some HTTP requests
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • A scripting utility was executed
  • Mimics the file times of a Windows system file
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Checks the system manufacturer, likely for anti-virtualization
  • Creates a copy of itself

Related domains:

users.qzone.qq.com
ocsp.dcocsp.cn
crl4.digicert.com
crl3.digicert.com

How to determine Backdoor:Win32/Zegost.DE!bit?


File Info:

crc32: 514B98F8md5: b0620c3bd14ab1a721e57922eee7cbcdname: B0620C3BD14AB1A721E57922EEE7CBCD.mlwsha1: e43ff64125d9312abd1be9f6213c7cb4289e9e79sha256: 8e82dcf6740a89544feee79ca164fafd890373078241a05c0d01cf689b5b6e22sha512: 056204200f3ae4b24ab591ced09d461c908dd9769144fcfdbc5785ad5b8fa1598d1301e4f9d52a80e12a57c862c2f212411856c7e3e1aa18bb2677f026505086ssdeep: 1536:I+8Y8vyOCn4ONaycgcLWujgFO/qIzVI/:kDZC4qaM5UVItype: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Backdoor:Win32/Zegost.DE!bit also known as:

Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Generic.Mulinex.18C72167
FireEye Generic.mg.b0620c3bd14ab1a7
McAfee Artemis!B0620C3BD14A
Cylance Unsafe
Sangfor Malware
BitDefender Generic.Mulinex.18C72167
Cybereason malicious.bd14ab
Symantec Backdoor.Zegost
APEX Malicious
Avast Win32:Downloader-TZT [Trj]
ClamAV Win.Trojan.Farfli-9817329-0
Kaspersky Backdoor.Win32.Farfli.anyf
Alibaba Backdoor:Win32/Farfli.9c2d8b41
NANO-Antivirus Trojan.Win32.Farfli.eljygf
Rising Backdoor.Farfli!8.B4 (TFE:5:tpCRkSRiJfN)
Ad-Aware Generic.Mulinex.18C72167
Emsisoft Generic.Mulinex.18C72167 (B)
F-Secure Heuristic.HEUR/AGEN.1110694
DrWeb Trojan.DownLoader23.53023
TrendMicro BKDR_ZEGOST.SM40
McAfee-GW-Edition GenericRXAY-MA!E3918549E96A
Sophos Mal/Behav-294
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor.Farfli.bgx
Avira HEUR/AGEN.1110694
Antiy-AVL Trojan[Backdoor]/Win32.Farfli
Microsoft Backdoor:Win32/Zegost.DE!bit
ZoneAlarm Backdoor.Win32.Farfli.anyf
GData Win32.Backdoor.Farfli.H
Cynet Malicious (score: 100)
BitDefenderTheta Gen:NN.ZexaF.34804.dmGfaSMhYakj
ALYac Generic.Mulinex.18C72167
MAX malware (ai score=83)
VBA32 BScope.Backdoor.Farfli
Malwarebytes Malware.AI.1719479668
ESET-NOD32 a variant of Win32/Farfli.BXP
TrendMicro-HouseCall BKDR_ZEGOST.SM40
Tencent Win32.Backdoor.Farfli.Pcry
Yandex Trojan.GenAsa!G24j6QQ9+B0
Ikarus Trojan.Win32.Farfli
AVG Win32:Downloader-TZT [Trj]
CrowdStrike win/malicious_confidence_60% (D)
Qihoo-360 Win32/Trojan.Downloader.341

How to remove Backdoor:Win32/Zegost.DE!bit?

  • 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.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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