Threat Database Trojans Trojan.MSIL.Injector.NEP

Trojan.MSIL.Injector.NEP

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 7,790
Threat Level: 80 % (High)
Infected Computers: 20,180
First Seen: November 26, 2014
Last Seen: January 13, 2026
OS(es) Affected: Windows

Trojan.MSIL.Injector.NEP is distributed via spam emails. Also, Trojan.MSIL.Injector.NEP is part of the deployment kit used by CryptoWall ransomware. Trojan.MSIL.Injector.NEP may pretend to be harmless Microsoft Word document or a ZIP archive. This disguise is used to avoid detection and allows Trojan.MSIL.Injector.NEP to download CryptoWall on the victim's computer. Once in the system, CryptoWall ransomware will use the RSA-2048 encryption algorithm to lock access to video, document and image files. At this stage, CryptoWall instructs its victims to pay a ransom demand for retrieval of the files. Payment does not guarantee you a decryption key to decrypt your files. To avoid getting infected with Trojan.MSIL.Injector.NEP, it is recommended to not open spam emails or download suspicious files attached to them.

SpyHunter Detects & Remove Trojan.MSIL.Injector.NEP

File System Details

Trojan.MSIL.Injector.NEP may create the following file(s):
# File Name MD5 Detections
1. Diagx.exe 19492d5067392d2d2fe15ec161c7722a 1,040
2. Win Update.exe 7f63ddfbd79cf30f7e057bade41d514a 49
3. Microsoft.com d9016566f365b6c8d5cebc7313f7d4d5 46
4. cssrs.exe 411ef5e0cacfc3b2c0d8a22a61a3726a 12
5. fdPrhlpr.exe 198d703ff2b28dba58367b5434232144 0
More files

Registry Details

Trojan.MSIL.Injector.NEP may create the following registry entry or registry entries:
Regexp file mask
%ALLUSERSPROFILE%\Injector.exe
%ALLUSERSPROFILE%\Microsoft.com
%APPDATA%\Maybe.exe
%TEMP%\nvc1.exe
%TEMP%\Win Update\Win Update.exe

Analysis Report

General information

Family Name: Trojan.MSIL.Injector
Signature status: No Signature

Known Samples

MD5: a90a7c91f72744bd1c6fd2273a285b41
SHA1: 27f2a4f37290dc6573f8c297b593ae6c6f433e4c
File Size: 2.12 MB, 2116905 bytes
MD5: 39ba33756f13f9df5a7a7cf120b55b9b
SHA1: 9feb46e8db106bc8206e91b07dc2d48cad06b4f6
SHA256: 9DEA07F4E51D94A68DBE52D3CE49DDC776758B9E1D3719261A23E4D523409B83
File Size: 651.26 KB, 651264 bytes
MD5: a78b51dbb7ca1d66bf2ff5fc787f30dd
SHA1: 16aab0bc72344ac6ca25fc8cb40c46cfdd7330e8
SHA256: 2F7414EACDC9BF8C158CAAAEA8A4117CE71404FFB019676D12FCEA305B57E70C
File Size: 4.45 MB, 4447816 bytes
MD5: fad3fd6e8dec1f1b37b985c7515b63d2
SHA1: 8538305b5ac3c10164f4faa6c8ff899f689cf29a
SHA256: B2425A52769BF77F6DC6DE59A7310478B3DB199204C112FC6723C81669A8526C
File Size: 347.05 KB, 347052 bytes
MD5: 5146c4ebf6976b707cbfb8d88833728c
SHA1: 12e5c992974ea4b1668744f45f992f2d667fb900
SHA256: 03EF846C042BA4E039261612B54D8AFF369FF9EEDA7A76FA82594B46975622A2
File Size: 9.39 MB, 9390524 bytes
Show More
MD5: 452dd2c618b8a02823fbdc7d4e17d030
SHA1: 049e588d56b9ca3b22e6be4d5990231194710d58
SHA256: 7E646188F2B4FE0DD3D4C2F817EBF274A4BDC3AA9DA70F9791C7BAD663925771
File Size: 666.11 KB, 666112 bytes
MD5: 6bfe328347cda0a7e87614d5015bb024
SHA1: a4e4599a5d9ef8077e4d50df8f78a1bb9ece8ba2
SHA256: 888573A1B710CED190065DD070AE854253485980757385D2D9E64DF149F8AD6D
File Size: 768.36 KB, 768359 bytes
MD5: b002a9d2b9beb6ed3f6fbd6f4dc816a9
SHA1: 7d8933bdfe82c63afc6874231a7d834969db5481
SHA256: CC2459BC2EB7B2EAD464EB6CF52FBE9291EB937F3054F7D9AC41DCB6FC8346FA
File Size: 1.89 MB, 1887579 bytes
MD5: 101e62bdca44f60d917c17f5462aacec
SHA1: f5b5102a3c8ca6ee7963d61127ae643b894a27b9
SHA256: 087F7114BB7CF84E9EE561D3458E33D04A256E57F39C0A4CAF8DE61733529255
File Size: 203.26 KB, 203264 bytes
MD5: 2f4615e22aef04f23fb1226ca95ed905
SHA1: 7177b860d42452c94a30d7ad3c58123861bd303a
SHA256: 02FF19FEDDC3C8704297998F546BDCE52D2AC98B9E1A51D51FF34C37F70BBA43
File Size: 7.98 MB, 7983159 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File doesn't have relocations information
  • File doesn't have security information
  • File has exports table
  • File has TLS information
  • File is .NET application
  • File is 32-bit executable
  • File is 64-bit executable
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  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

Windows PE Version Information

Name Value
Assembly Version
  • 1.0.8.0
  • 1.0.2.4
  • 1.0.0.0
Comments
  • This installation was built with Inno Setup.
  • T – Antivirus Security Beta Edition 2014
Company Name
  • Piotrekol
  • Thusith Soft Solution 2013
File Description
  • Explosive Injector
  • StreamCompanion - browser ingame overlay plugin Setup
  • TaaprWare2-UI
  • T – Antivirus Security Beta Edition 2014
File Version
  • 1.0.8.0
  • 1.0.2.4
  • 1.0.0.0
Internal Name
  • Explosive Injector.exe
  • TaaprWare2-UI.exe
  • TAVS.exe
  • zm_1_17.exe
Legal Copyright
  • Copyright © 2018
  • Copyright © 2020
  • Copyright © 2022
  • © Thusith Soft Solution 2013
Legal Trademarks Mr: Thusitha Wijethunga
Original Filename
  • Explosive Injector.exe
  • TaaprWare2-UI.exe
  • TAVS.exe
  • zm_1_17.exe
Product Name
  • Explosive Injector
  • StreamCompanion - browser ingame overlay plugin
  • TaaprWare2-UI
  • T – Antivirus Security Beta Edition 2014
Product Version
  • 1.0.8.0
  • 1.0.2.4
  • 1.0.0.0
  • 1.0.0.0

File Traits

  • .NET
  • .sdata
  • big overlay
  • dll
  • HighEntropy
  • NewLateBinding
  • ntdll
  • VirtualQueryEx
  • WriteProcessMemory
  • x64
Show More
  • x86
  • ZwQueryInformationProcess

Block Information

Total Blocks: 7
Potentially Malicious Blocks: 1
Whitelisted Blocks: 2
Unknown Blocks: 4

Visual Map

? ? 0 ? 0 x ?
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Files Modified

File Attributes
c:\users\user\appdata\local\temp\is-dutjb.tmp\7d8933bdfe82c63afc6874231a7d834969db5481_0001887579.tmp Generic Write,Read Attributes
c:\users\user\appdata\local\temp\is-qkv3i.tmp\_isetup\_setup64.tmp Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\temp\is-qkv3i.tmp\idp.dll Generic Write,Read Attributes

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcConnectPort
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateMutant
Show More
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationJobObject
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Encryption Used
  • BCryptOpenAlgorithmProvider
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • CreateProcess

Shell Command Execution

"C:\Users\Umqchqld\AppData\Local\Temp\is-DUTJB.tmp\7d8933bdfe82c63afc6874231a7d834969db5481_0001887579.tmp" /SL5="$30292,1019830,888320,c:\users\user\downloads\7d8933bdfe82c63afc6874231a7d834969db5481_0001887579"

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