Categories: Trojan

About “Trojan-Downloader.Win32.Small.fbbs” infection

The Trojan-Downloader.Win32.Small.fbbs 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.Small.fbbs virus can do?

  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • Network activity detected but not expressed in API logs
  • Creates a slightly modified copy of itself
  • Anomalous binary characteristics

How to determine Trojan-Downloader.Win32.Small.fbbs?


File Info:

crc32: 91BBF0DAmd5: 34ca2d964c1acac4569d83a9fa91433fname: 34CA2D964C1ACAC4569D83A9FA91433F.mlwsha1: 6fd1c5cfd68f4494163275fe1baf9294b3763402sha256: af62310ea064dea19cbde72420e94a658a5260bf4335d7034be81dbab8c10919sha512: de26214fcd6482cfd2719c7f4c8eaa5288f2ed3c43f6520756227f6719654eb0d08b723d565e95f66c878e2a22b9d56e53cfef0f10326204c5741125655a5e82ssdeep: 96:/jmRjDh7xZjxAnQWRIUZ2Cls5sKYdVTNauplipkOVuPJ7TaCIlC:/YXpCQWRIg8OhNNplipXVuPJ7TPIUtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan-Downloader.Win32.Small.fbbs also known as:

Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Ppatre.Gen.1
FireEye Generic.mg.34ca2d964c1acac4
CAT-QuickHeal Trojan.Mauvaise.SL1
McAfee Downloader-FML!34CA2D964C1A
Cylance Unsafe
Zillya Downloader.SmallGen.Win32.2
AegisLab Trojan.Win32.Small.tqY1
Sangfor Malware
K7AntiVirus Trojan-Downloader ( 0048f6391 )
BitDefender Trojan.Ppatre.Gen.1
K7GW Trojan-Downloader ( 0048f6391 )
Cybereason malicious.64c1ac
Cyren W32/S-73c6c324!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Waski-A [Trj]
ClamAV Win.Packed.Upatre-7168611-0
Kaspersky Trojan-Downloader.Win32.Small.fbbs
Alibaba TrojanDownloader:Win32/Upatre.b7ce5461
NANO-Antivirus Trojan.Win32.DownLoad3.ctgctx
Rising Trojan.Waski!1.A489 (CLASSIC)
Ad-Aware Trojan.Ppatre.Gen.1
Sophos Mal/Generic-R + Mal/EncPk-ACO
Comodo TrojWare.Win32.TrojanDownloader.Waski.AQ@7t0jau
DrWeb Trojan.DownLoad3.28161
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_UPATRE.SM37
McAfee-GW-Edition BehavesLike.Win32.Downloader.zt
Emsisoft Trojan.Ppatre.Gen.1 (B)
Ikarus Trojan.Win32.Crypt
Jiangmin Trojan.Generic.dayyf
Avira HEUR/AGEN.1136562
MAX malware (ai score=80)
Antiy-AVL Trojan[Dropper]/Win32.Injector
Microsoft TrojanDownloader:Win32/Upatre.A
Arcabit Trojan.Ppatre.Gen.1
SUPERAntiSpyware Trojan.Agent/Gen-Ppatre
ZoneAlarm Trojan-Downloader.Win32.Small.fbbs
GData Win32.Trojan-Downloader.Upatre.BJ
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Upatre.R258184
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34804.auX@aCbDtSbi
VBA32 TrojanDropper.Injector
Malwarebytes Upatre.Trojan.Downloader.DDS
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/TrojanDownloader.Waski.A
TrendMicro-HouseCall TROJ_UPATRE.SM37
Tencent Malware.Win32.Gencirc.10b0cc86
Yandex Trojan.GenAsa!EeB+TI3QYUc
SentinelOne Static AI – Malicious PE – Downloader
Fortinet W32/Waski.A!tr
AVG Win32:Waski-A [Trj]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.Downloader.c0d

How to remove Trojan-Downloader.Win32.Small.fbbs?

  • 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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