Malware

What is “Troj/Avaddon-A”?

Malware Removal

The Troj/Avaddon-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 Troj/Avaddon-A virus can do?

  • Attempts to connect to a dead IP:Port (1 unique times)
  • A process attempted to delay the analysis task.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • A process created a hidden window
  • Drops a binary and executes it
  • Creates an autorun.inf file
  • Uses Windows utilities for basic functionality
  • Attempts to delete volume shadow copies
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Clears Windows events or logs
  • Creates a copy of itself
  • Attempts to disable UAC
  • Attempts to modify UAC prompt behavior
  • Uses suspicious command line tools or Windows utilities

How to determine Troj/Avaddon-A?


File Info:

crc32: 6AD508BF
md5: 0b486fe0503524cfe4726a4022fa6a68
name: 0B486FE0503524CFE4726A4022FA6A68.mlw
sha1: 297dea71d489768ce45d23b0f8a45424b469ab00
sha256: 1228d0f04f0ba82569fc1c0609f9fd6c377a91b9ea44c1e7f9f84b2b90552da2
sha512: f4273ca5cc3a9360af67f4b4ee0bf067cf218c5dc8caeafbfa1b809715effe742f2e1f54e4fe9ec8d4b8e3ae697d57f91c2b49bdf203648508d75d4a76f53619
ssdeep: 24576:TCs99+OXLpMePfI8TgmBTCDqEbOpPtpFhyxfq:5GOXLpMePfzVTCD7gPtLhSfq
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.
InternalName: taskhost.exe
FileVersion: 10.0.17763.831 (WinBuild.160101.0800)
CompanyName: Microsoft Corporation
ProductName: Microsoftxae Windowsxae Operating System
ProductVersion: 10.0.17763.831
FileDescription: Host Process for Windows Tasks
OriginalFilename: taskhost.exe
Translation: 0x0409 0x04b0

Troj/Avaddon-A also known as:

K7AntiVirusTrojan ( 00577dec1 )
Elasticmalicious (high confidence)
DrWebTrojan.MulDrop16.12853
CynetMalicious (score: 100)
ALYacGen:Variant.Ransom.Avaddon.3
CylanceUnsafe
ZillyaTrojan.Filecoder.Win32.18512
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_70% (D)
K7GWTrojan ( 00577dec1 )
Cybereasonmalicious.050352
CyrenW32/Ransom.OS.gen!Eldorado
SymantecRansom.Avaddon!g1
ESET-NOD32a variant of Win32/Filecoder.Avaddon.C
APEXMalicious
AvastWin32:Trojan-gen
ClamAVWin.Ransomware.Avaddon-9852658-0
KasperskyHEUR:Trojan.Win32.DelShad.gen
BitDefenderGen:Variant.Ransom.Avaddon.3
MicroWorld-eScanGen:Variant.Ransom.Avaddon.3
TencentMalware.Win32.Gencirc.10ce4b59
Ad-AwareGen:Variant.Ransom.Avaddon.3
SophosTroj/Avaddon-A
BitDefenderThetaGen:NN.ZexaF.34690.Wu0@a8mRu3ni
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom.Win32.AVADDON.SMTHA
McAfee-GW-EditionTrojan-FTMI!0B486FE05035
FireEyeGeneric.mg.0b486fe0503524cf
EmsisoftGen:Variant.Ransom.Avaddon.3 (B)
SentinelOneStatic AI – Suspicious PE
JiangminTrojan.DelShad.bhg
AviraHEUR/AGEN.1136765
eGambitUnsafe.AI_Score_100%
MicrosoftRansom:Win32/Avaddon.MK!MTB
ArcabitTrojan.Ransom.Avaddon.3
GDataGen:Variant.Ransom.Avaddon.3
AhnLab-V3Malware/Win32.Ransom.C4280530
McAfeeTrojan-FTMI!0B486FE05035
MAXmalware (ai score=86)
VBA32Trojan.DelShad
MalwarebytesRansom.Avaddon
PandaTrj/GdSda.A
TrendMicro-HouseCallRansom.Win32.AVADDON.SMTHA
RisingRansom.Avaddon!1.C7A8 (CLASSIC)
YandexTrojan.DelShad!9+W8qxhoK3A
IkarusTrojan-Ransom.Avaddon
MaxSecureTrojan.Malware.74279478.susgen
FortinetW32/Avaddon.C!tr.ransom
AVGWin32:Trojan-gen

How to remove Troj/Avaddon-A?

Troj/Avaddon-A 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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