Categories: Trojan

JS.Trojan.Spawn.A malicious file

The JS.Trojan.Spawn.A 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 JS.Trojan.Spawn.A virus can do?

  • Sample contains Overlay data
  • Reads data out of its own binary image
  • Unconventionial language used in binary resources: Russian
  • The binary contains an unknown PE section name indicative of packing
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Authenticode signature is invalid
  • Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine JS.Trojan.Spawn.A?


File Info:

name: F3BBCA4853C63BDF0424.mlwpath: /opt/CAPEv2/storage/binaries/b68488c02691042215674de1070bc5c35bb0968ea2c01c7300ecd80a5590f4e4crc32: 8F044ABAmd5: f3bbca4853c63bdf04242240a580aeafsha1: d6aedd0d3aeb1ee26f6a1158406f0b7c74108c7fsha256: b68488c02691042215674de1070bc5c35bb0968ea2c01c7300ecd80a5590f4e4sha512: 7691bde5351df48e996bce649689ec86eefbd4f51725ed251aa2a43b3b8c3c5c2d10c3a4f2b298cf79872ffe35fd3f1c13f1396d91edb2772aeae3c6b05a5cc8ssdeep: 3072:okie6B4YdOUtTNwstl5O+EWhD5/O4kZ+Q/rLDcqcPoMXesvjgWcU5:ohe1YdOiCil0ah17kv//4qcHjt5type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1B0F3F13246F05607E4EF2F31448A035698E493273B242B3B49E5E7BF4499FE1E84EE85sha3_384: 2e94dfa043d1ea637f7e908220850433575002528ea38e77ad0a0e79984df3077124ae1b093156fdf2b76bf3bc2cf692ep_bytes: 60be006041008dbe00b0feff5783cdfftimestamp: 2003-05-15 08:30:58

Version Info:

0: [No Data]

JS.Trojan.Spawn.A also known as:

Lionic Trojan.Win32.NoClose.4!c
DrWeb JS.Siggen.381
MicroWorld-eScan JS.Trojan.Spawn.A
FireEye JS.Trojan.Spawn.A
ALYac JS.Trojan.Spawn.A
Malwarebytes Malware.Heuristic.1003
VIPRE JS.Trojan.Spawn.A
Sangfor Trojan.JS.Noclose.V5fm
K7AntiVirus Trojan ( 0015eebd1 )
Alibaba Trojan:JS/NoClose.b7329493
K7GW Trojan ( 0015eebd1 )
Cybereason malicious.853c63
Cyren JS/Spawn.B
Symantec Trojan.Gen.MBT
ESET-NOD32 JS/NoClose.K
Paloalto generic.ml
Cynet Malicious (score: 99)
Kaspersky Trojan.JS.NoClose.q
BitDefender JS.Trojan.Spawn.A
NANO-Antivirus Trojan.Html.NoClose.bynlz
Avast JS:Offiz [Trj]
Rising Trojan.NoClose!8.46 (TOPIS:E0:D2P2zDC6WPC)
Emsisoft JS.Trojan.Spawn.A (B)
F-Secure Malware.JS/Agent.psa.28
Baidu JS.Trojan.NoClose.i
Zillya Trojan.Offiz.JS.1
McAfee-GW-Edition JS/Pita
Sophos Mal/Generic-S
Ikarus Trojan.JS.NoClose
GData JS.Trojan.Spawn.A
Avira JS/Agent.psa.28
Xcitium Malware@#3ktrkq3k7yc23
Arcabit JS.Trojan.Spawn.A
ZoneAlarm Trojan.JS.NoClose.q
Microsoft Trojan:Win32/Wacatac.B!ml
McAfee Artemis!F3BBCA4853C6
MAX malware (ai score=84)
Cylance unsafe
TrendMicro-HouseCall TROJ_GEN.R002H0CB223
Tencent Irc.Trojan.Ls_gencirc.Eplw
Yandex JS.Noclose.N
MaxSecure Trojan.Malware.9315052.susgen
Fortinet JS/NoClose.Q!tr
AVG JS:Offiz [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove JS.Trojan.Spawn.A?

  • 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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