Categories: Malware

What is “Win32/Injector.CSEM”?

The Win32/Injector.CSEM 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 Win32/Injector.CSEM virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Compression (or decompression)
  • Creates RWX memory
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Attempts to remove evidence of file being downloaded from the Internet
  • Executed a process and injected code into it, probably while unpacking
  • Deletes its original binary from disk
  • Attempts to delete volume shadow copies
  • Modifies boot configuration settings
  • Installs itself for autorun at Windows startup
  • Network activity detected but not expressed in API logs
  • Attempts to identify installed AV products by registry key
  • Creates a copy of itself
  • Anomalous binary characteristics
  • Uses suspicious command line tools or Windows utilities

How to determine Win32/Injector.CSEM?


File Info:

crc32: 72EE1643md5: 8490c76397a82ab04103766289e3597fname: 8490C76397A82AB04103766289E3597F.mlwsha1: 6023e28740521889695388251d48141ecd74adbbsha256: 3f41a5bd2d7b5676a5c98f13d0245265c6faaf01b3893d0af0963c06718d6381sha512: 4765ad95f2c4e403044ab0e5db3e3193403c756af76d1c8c452dfda81d90b840f535038b0d215e077d6200d7c3918d249fc521786f3ca6c7ee661adf630d4f8cssdeep: 12288:BGAG5gGhgOj0KFe4pAfTAkCOj0KFe4piwQwd:BGrSKs4peTUKs4piwLdtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2013InternalName: ClearnessFileVersion: 172, 90, 135, 252CompanyName: Massive Entertainment ABPrivateBuild: 71, 129, 73, 136LegalTrademarks: EmiratesComments: FistfulProductName: Deter CompetedSpecialBuild: 109, 67, 198, 47ProductVersion: 47, 63, 72, 29FileDescription: Dismount Crumbs CitizenshipOriginalFilename: Crackersl.EXE

Win32/Injector.CSEM also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0055e3991 )
Elastic malicious (high confidence)
DrWeb Trojan.AVKill.59903
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Teslacrypt.OL4
ALYac Gen:Variant.Cripack.3
Cylance Unsafe
Zillya Trojan.Injector.Win32.364021
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
K7GW Trojan ( 0055e3991 )
Cybereason malicious.397a82
Baidu Win32.Trojan.Filecoder.k
Symantec Ransom.TeslaCrypt!g4
ESET-NOD32 a variant of Win32/Injector.CSEM
APEX Malicious
Avast Win32:Malware-gen
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender Gen:Variant.Cripack.3
NANO-Antivirus Trojan.Win32.AVKill.ealwff
MicroWorld-eScan Gen:Variant.Cripack.3
Tencent Malware.Win32.Gencirc.10c2ed59
Ad-Aware Gen:Variant.Cripack.3
Sophos ML/PE-A + Mal/Ransom-EK
BitDefenderTheta Gen:NN.ZexaF.34170.Iq0@am2fIkp
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HPLOCKY.SM1
McAfee-GW-Edition BehavesLike.Win32.Generic.hc
FireEye Generic.mg.8490c76397a82ab0
Emsisoft Gen:Variant.Cripack.3 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Packed.Tpyn.xi
Webroot
Avira HEUR/AGEN.1122415
Antiy-AVL Trojan/Generic.ASMalwS.171739B
Kingsoft Win32.Troj.Tpyn.v.(kcloud)
Microsoft Ransom:Win32/Tescrypt.H
GData Gen:Variant.Cripack.3
AhnLab-V3 Trojan/Win32.Teslacrypt.R173404
Acronis suspicious
McAfee Ransomware-FDS!8490C76397A8
MAX malware (ai score=86)
VBA32 Trojan.AVKill
Malwarebytes Ransom.FileLocker
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_HPLOCKY.SM1
Rising Trojan.Agent!1.A322 (CLASSIC)
Yandex Trojan.Injector!zAFty/2KP1c
Ikarus Trojan.Win32.Crypt
Fortinet W32/Injector.CSAW!tr
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove Win32/Injector.CSEM?

  • 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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