Trojan

Should I remove “Trojan.Agent.CJYY”?

Malware Removal

The Trojan.Agent.CJYY 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.Agent.CJYY virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Dynamic (imported) function loading detected
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Deletes its original binary from disk
  • Installs itself for autorun at Windows startup
  • Installs itself for autorun at Windows startup
  • Creates a copy of itself
  • Anomalous binary characteristics

How to determine Trojan.Agent.CJYY?


File Info:

name: 73C79B33D32A711FC7B7.mlw
path: /opt/CAPEv2/storage/binaries/64a30dcffbcdeb00e3ce306c7db7fdd90777e9ba204c284a067a4503f6bd772b
crc32: 92FD7FD4
md5: 73c79b33d32a711fc7b7f48592c00bc9
sha1: ab322239586646b3b9c3af6eb48a0f4d51904685
sha256: 64a30dcffbcdeb00e3ce306c7db7fdd90777e9ba204c284a067a4503f6bd772b
sha512: c5927f36ec87252dd78ce0be63494da324a8d9e83d776a9b220672d5c5dfef40393cb4977189de8ab463f7e64d04649e327d03d66a1adb16fccba97c8c43725b
ssdeep: 49152:50MVzdzSmAx3MdOEI6lPu8LibTJ1sjsM3S3u9QRs3D7sDw2BXK4OiZrq1DfP+rsD:50izDA8OEI6lPZLibTJ1a3p9QasDw2Bd
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T10FE5C0317D5D407ED46A21318E9BABB8F66BFDB06A35020F21617F3EBA30352491D61B
sha3_384: c1f120f21737a7e33fde5d53e52e3163d87a2ba70eaa52045105b35e42b7dfa47197eb0827c4ae0485f031072aa59c21
ep_bytes: e849940000e989feffff8bff558bec53
timestamp: 2017-07-16 11:31:01

Version Info:

CompanyName: AVAST Software
FileDescription: Avast Emergency Update
FileVersion: 17.5.3559.0
InternalName: AvEmUpdate.exe
LegalCopyright: Copyright (c) 2014 AVAST Software
OriginalFilename: AvEmUpdate.exe
ProductName: Avast Antivirus
ProductVersion: 17.5.3559.0
Translation: 0x0409 0x04e4

Trojan.Agent.CJYY also known as:

LionicTrojan.Win32.Agent.4!c
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Agent.CJYY
FireEyeGeneric.mg.73c79b33d32a711f
ALYacTrojan.Agent.CJYY
CylanceUnsafe
ZillyaTrojan.Agent.Win32.809348
SangforTrojan.Win32.Agent.8
K7AntiVirusTrojan ( 00512f021 )
AlibabaTrojan:Win32/Generic.2470f2b8
K7GWTrojan ( 00512f021 )
CrowdStrikewin/malicious_confidence_90% (W)
BitDefenderThetaGen:NN.ZexaF.34182.6w0@auPZprbb
SymantecML.Attribute.HighConfidence
ESET-NOD32Win32/Agent.ZAM
Paloaltogeneric.ml
CynetMalicious (score: 99)
KasperskyTrojan.Win32.Agent.nfamzb
BitDefenderTrojan.Agent.CJYY
NANO-AntivirusTrojan.Win32.Agent.erfsnp
AvastWin32:Malware-gen
TencentMalware.Win32.Gencirc.10b2bd4b
Ad-AwareTrojan.Agent.CJYY
SophosMal/Generic-S
ComodoTrojWare.Win32.Agent.ZAM@767gpn
DrWebTrojan.DownLoader25.12242
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionGenericRXCB-OQ!73C79B33D32A
EmsisoftTrojan.Agent.CJYY (B)
APEXMalicious
GDataTrojan.Agent.CJYY
JiangminTrojan.Scar.jes
WebrootW32.Smbexploit.Miner
AviraTR/Agent.rqgbn
Antiy-AVLTrojan/Generic.ASMalwS.2151056
MicrosoftTrojan:Win32/Tiggre!rfn
SentinelOneStatic AI – Suspicious PE
AhnLab-V3Trojan/Win32.Scar.C2062159
McAfeeGenericRXCB-OQ!73C79B33D32A
MAXmalware (ai score=99)
VBA32Trojan.Scar
MalwarebytesTrojan.Dropper
RisingTrojan.Agent!8.B1E (CLOUD)
YandexTrojan.GenAsa!c5h+8msWEPg
FortinetW32/Generic.AC.3F4CA4!tr
AVGWin32:Malware-gen
Cybereasonmalicious.3d32a7
PandaTrj/Agent.SM

How to remove Trojan.Agent.CJYY?

Trojan.Agent.CJYY 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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