Trojan

Should I remove “Trojan-Downloader.Win32.Bitser.big”?

Malware Removal

The Trojan-Downloader.Win32.Bitser.big 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-Downloader.Win32.Bitser.big virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Presents an Authenticode digital signature
  • Guard pages use detected – possible anti-debugging.
  • A process attempted to delay the analysis task.
  • Dynamic (imported) function loading detected
  • Reads data out of its own binary image
  • A process created a hidden window
  • A scripting utility was executed
  • Uses Windows utilities for basic functionality
  • Suspicious JavaScript was executed by a script process
  • Attempts to modify browser security settings
  • Attempts to interact with an Alternate Data Stream (ADS)

How to determine Trojan-Downloader.Win32.Bitser.big?


File Info:

name: 887E09F638175CE7E2E8.mlw
path: /opt/CAPEv2/storage/binaries/7960e5f57872a241ea0524bdbce410af7c5f383ba751cb26ae18be2f9b267839
crc32: 168405D9
md5: 887e09f638175ce7e2e89851b3cca6ec
sha1: 179ccf3c2b0a3ada9752af747debb3dee964a676
sha256: 7960e5f57872a241ea0524bdbce410af7c5f383ba751cb26ae18be2f9b267839
sha512: bdca1798f92f57af02950d733c092ac64f2e4c63f0744920ebefd0856647415bb02e4efba82d9f56c6c9e8acb4428e2d50ab2ac4f7bc23b3cc1dab208464aacf
ssdeep: 12288:h5393whFOBbODxT2W5gCpVStcJBHHutd5E:h53uhFdTh5dpVHcXG
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T13EB405FDEC839FA2CC4EFC700638517477A4A9100E0856BEA541E6E697732E2D7B6391
sha3_384: 153688279a024d9e5b74166d7c1f8c04956ed8ca9d80b0eb3b1538ae0c8f5918f141aeb9ae9457be4454968c0470ccee
ep_bytes: 558bec6aff6880fa410068f0c4410064
timestamp: 2016-04-02 22:14:34

Version Info:

CompanyName: DriverPack
FileDescription: DriverPack
FileVersion: 1.0
InternalName: DriverPack
LegalCopyright: Copyright © Kuzyakov Artur
OriginalFilename: DriverPack.exe
PrivateBuild: 2016
ProductName: DriverPack
ProductVersion: 1.0
Translation: 0x0000 0x04b0

Trojan-Downloader.Win32.Bitser.big also known as:

LionicTrojan.Win32.Bitser.a!c
FireEyeGeneric.mg.887e09f638175ce7
CylanceUnsafe
K7AntiVirusRiskware ( 0040eff71 )
K7GWRiskware ( 0040eff71 )
SymantecPUA.DriverPack
ESET-NOD32Win32/DriverPack.B potentially unwanted
ClamAVWin.Trojan.Agent-6301763-0
KasperskyTrojan-Downloader.Win32.Bitser.big
AvastFileRepMalware [PUP]
SophosDriverPack (PUA)
ComodoApplicUnwnt@#mhu47e7pzn57
DrWebProgram.Unwanted.1868
VIPRETrojan.Win32.Generic!BT
TrendMicroPUA_DRIVERPACK
EmsisoftApplication.InstallDrive (A)
JiangminTrojan/CoinMiner.ab.a
WebrootW32.Adware.Gen
AviraPUA/OpenCandy.ZW
MicrosoftPUABundler:Win32/DriverPack
SUPERAntiSpywarePUP.DriverPack/Variant
GDataWin32.Application.Agent.1HJ134
CynetMalicious (score: 100)
AhnLab-V3PUP/Win32.DriverPack.R235132
VBA32Trojan.Hesv
MalwarebytesPUP.Optional.DriverPack
TrendMicro-HouseCallPUA_DRIVERPACK
YandexPUA.Downloader!xA9URRv8ak8
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_72%
AVGFileRepMalware [PUP]
CrowdStrikewin/malicious_confidence_100% (D)
MaxSecureTrojan.bundler.driverpack.1

How to remove Trojan-Downloader.Win32.Bitser.big?

Trojan-Downloader.Win32.Bitser.big 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.

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