Categories: Malware

Win32:Downloader-NBA [Trj] removal tips

The Win32:Downloader-NBA [Trj] 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:Downloader-NBA [Trj] virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Behavioural detection: Executable code extraction – unpacking
  • Dynamic (imported) function loading detected
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Reads data out of its own binary image
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Behavioural detection: Injection (Process Hollowing)
  • Executed a process and injected code into it, probably while unpacking
  • Behavioural detection: Injection (inter-process)
  • Created a process from a suspicious location
  • Anomalous binary characteristics

How to determine Win32:Downloader-NBA [Trj]?


File Info:

name: 46A199B8CBBDC6A6D434.mlwpath: /opt/CAPEv2/storage/binaries/6f33287a9265cd1e0044a877e4b0630e45dc88b787a571edabd0142e9986e41ccrc32: 84175099md5: 46a199b8cbbdc6a6d43462b682049ad0sha1: 587c66a15134e50ded9c49c6a998fc15ad3fc0easha256: 6f33287a9265cd1e0044a877e4b0630e45dc88b787a571edabd0142e9986e41csha512: a64d9afb46cb4169faa4c2f69e09d4ad74ff4b1c17cede3c406ba2fde5fe8278583269ec65c7968f58cd20812ffc98b413bd5ab216a077e9c91acd9682aee7c6ssdeep: 3072:eGpQpL479WKTXJg257empxg03/DRtwf9RAhde8jt4dHZ3:eGokTvtBbkf9Whde8xGHZ3type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1C2E3F1626333793BE2199478138DA97DD26BBCA33F510ECADE74E94893010B5452BB93sha3_384: f0a3a01f0ff60181167ef9d2e374af9dd9105ad8dcfbdc81cc63e0b3c79fef2ab5b33e10269e763ea465eb9dd667b30dep_bytes: 5589e583ec08c7042402000000ff1550timestamp: 2012-02-12 19:03:30

Version Info:

0: [No Data]

Win32:Downloader-NBA [Trj] also known as:

Bkav W32.AIDetect.malware2
Lionic Trojan.Win32.Generic.4!c
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Trojan.ProcessHijack.jyX@amgmGUh
FireEye Generic.mg.46a199b8cbbdc6a6
McAfee PWS-Zbot.gen.rz
Cylance Unsafe
Zillya Downloader.Avalod.Win32.11837
Sangfor Trojan.Win32.Avalod.A
K7AntiVirus Spyware ( 00009b291 )
Alibaba TrojanDownloader:Win32/Avalod.7047c886
K7GW Spyware ( 00009b291 )
Cybereason malicious.8cbbdc
VirIT Trojan.Win32.DownLoad2.DRGM
Cyren W32/Agent.OI.gen!Eldorado
Symantec Trojan Horse
ESET-NOD32 Win32/Spy.Zbot.YW
APEX Malicious
Paloalto generic.ml
ClamAV Win.Malware.Zbot-9863203-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Trojan.ProcessHijack.jyX@amgmGUh
NANO-Antivirus Trojan.Win32.DownLoad2.rhjti
Avast Win32:Downloader-NBA [Trj]
Tencent Win32.Trojan.Generic.Pdwb
Ad-Aware Gen:Trojan.ProcessHijack.jyX@amgmGUh
Emsisoft Gen:Trojan.ProcessHijack.jyX@amgmGUh (B)
Comodo Malware@#3jv3x2x8jkx11
DrWeb Trojan.DownLoad2.64388
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.cc
Sophos ML/PE-A + Troj/Avalod-B
SentinelOne Static AI – Malicious PE
GData Gen:Trojan.ProcessHijack.jyX@amgmGUh
Jiangmin TrojanDownloader.Avalod.kwb
eGambit Generic.PSW
Avira TR/Crypt.ZPACK.Gen2
Antiy-AVL Trojan/Generic.ASMalwS.5D1AB2
Kingsoft Win32.Troj.Undef.(kcloud)
ViRobot Trojan.Win32.A.Downloader.87552.BA
Microsoft TrojanDownloader:Win32/Avalod.A
Cynet Malicious (score: 100)
AhnLab-V3 Downloader/Win32.Avalod.R21101
BitDefenderTheta AI:Packer.171CA8DD1E
ALYac Gen:Trojan.ProcessHijack.jyX@amgmGUh
MAX malware (ai score=99)
VBA32 Trojan.Download
Rising Spyware.Zbot!8.16B (CLOUD)
Ikarus Trojan-Downloader.Win32.Avalod
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Injector.OEC!tr
Webroot W32.InfoStealer.Zeus
AVG Win32:Downloader-NBA [Trj]
Panda Trj/CI.A
CrowdStrike win/malicious_confidence_100% (D)

How to remove Win32:Downloader-NBA [Trj]?

  • 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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