Categories: Trojan

About “Trojan:Win32/Ymacco.ABFF” infection

The Trojan:Win32/Ymacco.ABFF 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:Win32/Ymacco.ABFF virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Injection with CreateRemoteThread in a remote process
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • At least one IP Address, Domain, or File Name was found in a crypto call
  • Reads data out of its own binary image
  • A process created a hidden window
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Detects the presence of Wine emulator via function name
  • Detects Sandboxie through the presence of a library
  • Executed a process and injected code into it, probably while unpacking
  • Attempts to remove evidence of file being downloaded from the Internet
  • A process was set to shut the system down when terminated
  • Installs itself for autorun at Windows startup
  • Exhibits behavior characteristic of Nanocore RAT
  • Checks the version of Bios, possibly for anti-virtualization
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization
  • Detects VirtualBox through the presence of a registry key
  • Detects VMware through the presence of a registry key
  • Creates a copy of itself
  • Collects information to fingerprint the system

How to determine Trojan:Win32/Ymacco.ABFF?


File Info:

crc32: FBB6F745md5: e4f51af509a39b76e1e5b501776e570bname: E4F51AF509A39B76E1E5B501776E570B.mlwsha1: 146b8cc7533eee437b2aa0c5469e5e05342d0348sha256: ffe87a32645ae094df3ad919bb9967d6c14d1db9baf1c33ff126470754f41eacsha512: 3588f2394e0d35b9d3aa21eba6ff0eede753b1dd67b4e2c6aec1e0674b701fb74a3b23ff0079005cee0cd2cc00f8fa762b6953d506b048fec382b71192cd7142ssdeep: 24576:QRCtZDmR89FXxoIZxtFhTTKaOtyOL+qNVxiGS6qI+R:vtZDmRCXyAxB+aa4qtPZqtype: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0LegalCopyright: Copyright xa9 Darren Horrocks 2013Assembly Version: 1.0.0.0InternalName: x53f8x635x6267F.exeFileVersion: 1.0.0.0CompanyName: www.bizzeh.comLegalTrademarks: Comments: Image resizer/cropper thumbnailerProductName: OKResizerProductVersion: 1.0.0.0FileDescription: OKResizerOriginalFilename: x53f8x635x6267F.exe

Trojan:Win32/Ymacco.ABFF also known as:

K7AntiVirus Trojan ( 0057aab31 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Trojan.GenericKD.36714761
Cylance Unsafe
Sangfor Trojan.Win32.Woreflint.A
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Trojan:Win32/starter.ali1000139
K7GW Trojan ( 0057aab31 )
Cybereason malicious.7533ee
Cyren W32/MSIL_Kryptik.DXA.gen!Eldorado
Symantec Trojan.Gen.2
ESET-NOD32 a variant of MSIL/GenKryptik.FDYX
APEX Malicious
Avast Win32:RATX-gen [Trj]
Kaspersky HEUR:Trojan-PSW.MSIL.Agensla.gen
BitDefender Trojan.GenericKD.36714761
MicroWorld-eScan Trojan.GenericKD.36714761
Ad-Aware Trojan.GenericKD.36714761
Sophos Mal/Generic-S
Comodo TrojWare.Win32.Agent.ucbtp@0
BitDefenderTheta Gen:NN.ZemsilF.34678.6m0@aaB8DSk
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
FireEye Generic.mg.e4f51af509a39b76
Emsisoft Trojan.Agent (A)
SentinelOne Static AI – Malicious PE
Webroot W32.Trojan.Gen
Avira TR/Kryptik.cptnl
Kingsoft Win32.PSWTroj.Undef.(kcloud)
Microsoft Trojan:Win32/Ymacco.ABFF
AegisLab Trojan.MSIL.Agensla.i!c
GData MSIL.Backdoor.Nancat.155RWP
McAfee PWS-FCXL!E4F51AF509A3
MAX malware (ai score=80)
VBA32 CIL.HeapOverride.Heur
Malwarebytes Trojan.MalPack.PNG.Generic
Panda Trj/GdSda.A
Rising Trojan.GenKryptik!8.AA55 (CLOUD)
Ikarus Trojan.MSIL.Krypt
Fortinet MSIL/GenKryptik.FDYX!tr
AVG Win32:RATX-gen [Trj]
Paloalto generic.ml
Qihoo-360 Win32/TrojanSpy.AgentTesla.HgIASSsA

How to remove Trojan:Win32/Ymacco.ABFF?

  • 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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