Bulz.371521 (B) removal guide

The Bulz.371521 (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.

GridinSoft Anti-Malware

Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.

6-day free trial available.

What Bulz.371521 (B) virus can do?

Creates RWX memory
Drops a binary and executes it
Installs itself for autorun at Windows startup
Creates a copy of itself
Anomalous binary characteristics

How to determine Bulz.371521 (B)?


File Info:
crc32: 0CF4BF8F
md5: 723b3aec3aa90a03812ec9eeeb9b4857
name: 723B3AEC3AA90A03812EC9EEEB9B4857.mlw
sha1: 68d8d8ac3a299dfc30067e244c6caceb24975220
sha256: 0e4b62183d6e80d0e9b0ab730bf3a26c82bc946961d07747ea330280642054ff
sha512: 0a50ef9734258a51d0b270444f4331313bf6455d84c76ecceb32badcb191d481daa610a9543b33916fb32c6dbbc18c741a475335890407c5cc5d6931a3f8fce7
ssdeep: 192:JF4JjlpfsroOncco9Pa/UL9A/ckaylEU9qfS7+IdLqAW7:+jMro5co9PacL9A/cNU9US7Z1qAW7
type: PE32 executable (console) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:
Translation: 0x0000 0x04b0
LegalCopyright: Copyright Microsoftxa9  2018
Assembly Version: 1.0.0.0
InternalName: Windows32.exe
FileVersion: 1.0.0.0
CompanyName: Microsoft
LegalTrademarks: 
Comments: 
ProductName: Windows32
ProductVersion: 1.0.0.0
FileDescription: Windows32
OriginalFilename: Windows32.exe

Bulz.371521 (B) also known as:

K7AntiVirus	Trojan ( 005317fb1 )
Elastic	malicious (high confidence)
DrWeb	Trojan.DownLoader26.49339
McAfee	GenericRXFK-UM!723B3AEC3AA9
Cylance	Unsafe
Sangfor	Trojan.Win32.Save.a
K7GW	Trojan ( 005317fb1 )
Cybereason	malicious.c3aa90
Symantec	Trojan.Gen.MBT
ESET-NOD32	a variant of MSIL/Small.FA
Avast	Win32:Malware-gen
Kaspersky	Trojan-Ransom.Win32.Blocker.laia
BitDefender	Gen:Variant.Bulz.371521
NANO-Antivirus	Trojan.Win32.Blocker.fbyqco
MicroWorld-eScan	Gen:Variant.Bulz.371521
Tencent	Win32.Trojan.Blocker.Aenz
Ad-Aware	Gen:Variant.Bulz.371521
Sophos	Mal/Generic-S
Comodo	Malware@#3m4dww617rfvj
BitDefenderTheta	Gen:NN.ZemsilF.34678.am0@ams0vCo
VIPRE	Trojan.Win32.Generic!BT
McAfee-GW-Edition	GenericRXFK-UM!723B3AEC3AA9
FireEye	Generic.mg.723b3aec3aa90a03
Emsisoft	Gen:Variant.Bulz.371521 (B)
SentinelOne	Static AI – Malicious PE
Avira	TR/ATRAPS.Gen
eGambit	Unsafe.AI_Score_92%
Microsoft	Trojan:Win32/Ymacco.AB0E
AegisLab	Trojan.Win32.Blocker.j!c
GData	Gen:Variant.Bulz.371521
MAX	malware (ai score=98)
Panda	Trj/GdSda.A
Rising	Ransom.Blocker!8.12A (CLOUD)
Yandex	Trojan.Blocker!EDxYUB32HLw
Ikarus	Trojan.ATRAPS
Fortinet	MSIL/Small.FA!tr
AVG	Win32:Malware-gen
Qihoo-360	Win32/Ransom.Blocker.HgIASOQA

How to remove Bulz.371521 (B)?

Bulz.371521 (B) removal tool

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.

About the author

Paul Valéry

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

Leave a Comment X