Trojan.Generic.20733800 (BitDefender), Virus:Win32/Virut.BN (Microsoft), HEUR:Virus.Win32.Generic (Kaspersky), Trojan.Generic.20733800 (B) (Emsisoft), W32.Virut.CF (Symantec), Virus.Win32.Virut (Ikaru...
Blog rating:1.7 out of5 with6 ratings


by malwarelabrobot on June 23rd, 2018 in Malware Descriptions.

Trojan.Generic.20733800 (BitDefender), Virus:Win32/Virut.BN (Microsoft), HEUR:Virus.Win32.Generic (Kaspersky), Trojan.Generic.20733800 (B) (Emsisoft), W32.Virut.CF (Symantec), Virus.Win32.Virut (Ikarus), Trojan.Generic.20733800 (FSecure), FileRepMalware (AVG), FileRepMalware (Avast), PE_VIRUX.A (TrendMicro), GenericEmailWorm.YR, TrojanFlyStudio.YR (Lavasoft MAS)
Behaviour: Trojan, Worm, EmailWorm, Virus, Malware

The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

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Dynamic Analysis
Static Analysis
Network Activity
Strings from Dumps

MD5: ef193e15172da416b9a2fed792be3b4a
SHA1: 49bc30c530713a18739c9d129f87ab431f6bc6e2
SHA256: 07a4c38ce47ba161991f58a197f6021ad07502bb21d3ce491c2022b4af9a406c
SSDeep: 12288:apxlOhdNfBBBT1DQTFdFINsG14RsehppelNBPyspQmlVuzB o:ashRTdIFdF0sXb15mlVuzBp
Size: 600064 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2017-03-20 11:24:14
Analyzed on: Windows7 SP1 32-bit


Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).


Behaviour Description
EmailWorm Worm can send e-mails.

Process activity

The Trojan creates the following process(es):
No processes have been created.
The Trojan injects its code into the following process(es):

%original file name%.exe:2052


The following mutexes were created/opened:
No objects were found.

File activity

No files have been created.

Registry activity

The process %original file name%.exe:2052 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

"vga.drv 1276x846x32(BGR 0)" = "31,31,31,31"

Dropped PE files

There are no dropped PE files.

HOSTS file anomalies

The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses.
The modified file is 864 bytes in size. The following strings are added to the hosts file listed below:

Rootkit activity

The Trojan installs the following user-mode hooks in ntdll.dll:




Company Name:
Product Name: ?????
Product Version:
Legal Copyright: ?????? ????????
Legal Trademarks:
Original Filename:
Internal Name:
File Version:
File Description: ?????
Comments: ??????????(
Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
UPX0 4096 1056768 0 0 d41d8cd98f00b204e9800998ecf8427e
UPX1 1060864 528384 525824 5.48935 9372dd3e8927c6dc31bf0845d1ea638c
.rsrc 1589248 73728 73216 1.69558 e05be5e10d97c6af88a1e70d7d54d84a

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:



IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET TROJAN IRC Nick change on non-standard port


Web Traffic was not found.

The Trojan connects to the servers at the folowing location(s):

Strings from Dumps were not found.

Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.

Manual removal*

  1. Scan a system with an anti-rootkit tool.
  2. Terminate malicious process(es) (How to End a Process With the Task Manager):No processes have been created.
  3. Delete the original Trojan file.
  4. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): localhost
  5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  6. Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Average: 1.7 (6 votes)


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