Trojan.MSIL.Downloader.ACD

The detection of Trojan.MSIL.Downloader.ACD on your system indicates a potential security threat that requires immediate attention. This detection name suggests a type of malicious software designed to download additional malware onto an infected computer, which can lead to a range of serious security issues. Understanding what this threat is, how it operates, and the symptoms it may cause is crucial for effective removal and prevention of future infections.

What Is Trojan.MSIL.Downloader.ACD?

Trojan.MSIL.Downloader.ACD is identified as a Trojan-type threat, which is a broad category of malware that disguises itself as legitimate software. The "MSIL" part of its name suggests that it is written in Microsoft Intermediate Language, which is a platform-agnostic, object-oriented programming language used by the .NET Framework. This implies that the malware is designed to operate on Windows systems. The term "Downloader" indicates its primary function: to download and install other malicious programs onto the infected computer, potentially leading to further compromise and data theft.

How Trojan.MSIL.Downloader.ACD Operates

Once installed on a system, Trojan.MSIL.Downloader.ACD can operate in various ways, depending on its specific design and the intentions of its creators. Typically, it will attempt to connect to a command and control server to receive instructions and download additional malware components. These components can include keyloggers, ransomware, spyware, and other types of malware designed to steal sensitive information, disrupt system operation, or extort money from the victim. The malware may also attempt to disable security software or exploit vulnerabilities in the system to maintain its presence and facilitate further malicious activities.

Symptoms of Infection

The symptoms of a Trojan.MSIL.Downloader.ACD infection can vary widely, depending on the specific malware downloaded and installed by the Trojan. Common indicators of infection include unexpected changes in system behavior, such as slow performance, frequent crashes, or the appearance of unwanted programs and pop-ups. You may also notice that your internet connection seems slower than usual or that your browser is being redirected to unwanted websites. In some cases, the malware may not exhibit noticeable symptoms immediately, making it difficult to detect without the use of antivirus software.

How to Remove Trojan.MSIL.Downloader.ACD

1. Enter Safe Mode with Networking to prevent the malware from loading and to gain better control over your system during the removal process.
2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all components of the Trojan and any downloaded malware.
3. Uninstall suspicious programs that you do not recognize or that were installed around the time the infection was detected.
4. Reset your browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by the malware.
5. After completing the above steps, reboot your system and perform another scan with your anti-malware tool to ensure that all threats have been removed.

Conclusion

The removal of Trojan.MSIL.Downloader.ACD requires careful and thorough action to ensure that all components of the malware are eliminated from the infected system. It is also crucial to take preventive measures, such as keeping your operating system and software up to date, using strong antivirus protection, and being cautious when opening email attachments or downloading software from the internet. By understanding the nature of this threat and taking the necessary steps for removal and prevention, you can protect your system and personal data from the risks associated with Trojan.MSIL.Downloader.ACD and other malicious software.

Analysis Report

General information

Family Name:	Trojan.MSIL.Downloader.ACD
Signature status:	No Signature

Known Samples

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Known Samples

This section lists other file samples believed to be associated with this family.

MD5: bad3df107efcea6a0074bfd421f09a2f SHA1: 64d7968fe4b181800019878d743570f7f429e0f8 SHA256: E69131E863C2C14873B89AD219D2840302274D88851205ED26ACEB87CF21829F File Size: 246.18 KB, 246180 bytes

MD5: 3a999edccfb08e7a2f433f506d7005f6 SHA1: f492c0fd75ae55daf1cc1dd57840864b87a00eaf SHA256: 25D9D926B3C0E98CFB21D56E7146BEF3967CA480A4B2216F4979A618EED21DD5 File Size: 394.54 KB, 394538 bytes

MD5: 7eda89d3d8d10bed75f6ffed2c849839 SHA1: 94c3e6ce88889e270b5c9c03c579e101a2ab4970 SHA256: 26F0456F4FF423EC622D11291A52462CF177310D5C8A497513277ED80DEFB634 File Size: 236.79 KB, 236790 bytes

MD5: a09604dddf0efaeaba444ae5a53f0aa1 SHA1: 3d2cec5704d5f8c74352536163a6d6bd3cea9ab4 SHA256: 4E04522FC58AD0C1EE9A3F79FA47E4F4CBDE87F2DB3DF78274F407D4711E4598 File Size: 300.23 KB, 300227 bytes

Windows Portable Executable Attributes

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Windows Portable Executable Attributes

This section lists file attributes found within family samples. These attributes are extracted from the files’ Windows PE (Portable Executable) specification and various system flags. Portable Executable Attributes give malware researchers insight into a file’s functionality, executable details, platform and runtime environment.

• 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 is 32-bit executable
• 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

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• IMAGE_FILE_DLL is not set inside PE header (Executable)
• IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

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File Icons

This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.

Windows PE Version Information

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Windows PE Version Information

This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.

Name	Value
File Description	nichol patrizio secretes
File Version	9.7.2.36 8.9.5.94
Legal Copyright	nichol nichol patrizio patrizio secretes secretes
Original Filename	doulton.exe gunnar.exe minsk.exe
Product Name	nichol 8.9.5.94 patrizio 8.9.5.94 secretes 9.7.2.36
Product Version	9.7.2.36 8.9.5.94

File Traits

• .NET
• x86

Files Modified

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Files Modified

This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.

File	Attributes
\device\namedpipe\gmdasllogger	Generic Write,Read Attributes
c:\program files\common files\system\symsrv.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\soundvolumeview.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\soundvolumeview64.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\a1d26e2\1ec3241c1e70.tmp	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\class.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\class.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\microsoft.web.webview2.core.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\microsoft.web.webview2.core.dll	Synchronize,Write Attributes

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c:\users\user\appdata\local\temp\nsc416a.tmp\microsoft.web.webview2.winforms.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\microsoft.web.webview2.winforms.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\predatory.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\predatory.exe	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\webview2loader.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsc416a.tmp\webview2loader.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\awacs.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\awacs.exe	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\class.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\class.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\microsoft.web.webview2.core.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\microsoft.web.webview2.core.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\microsoft.web.webview2.winforms.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\microsoft.web.webview2.winforms.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\webview2loader.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsf59e9.tmp\webview2loader.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\class.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\class.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\microsoft.web.webview2.core.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\microsoft.web.webview2.core.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\microsoft.web.webview2.winforms.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\microsoft.web.webview2.winforms.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\posses.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\posses.exe	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\webview2loader.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nso1ed4.tmp\webview2loader.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nss428a.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\class.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\class.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\microsoft.web.webview2.core.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\microsoft.web.webview2.core.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\microsoft.web.webview2.winforms.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\microsoft.web.webview2.winforms.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\syndications.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\syndications.exe	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\webview2loader.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nss428a.tmp\webview2loader.dll	Synchronize,Write Attributes

Registry Modifications

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Registry Modifications

This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.

Key::Value	Data	API Name
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	\??\C:\Users\Mlpiqqap\AppData\Local\Temp\nsf59E9.tmp\awacs.exe	RegNtPreCreateKey
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	\??\C:\Users\Mlpiqqap\AppData\Local\Temp\nsf59E9.tmp\awacs.exe\??\C:\Users\Mlpiqqap\AppData\Local\Temp\nsf59E9.tmp\	RegNtPreCreateKey
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	*1\??\C:\Windows\SystemTemp\MicrosoftEdgeUpdate.exe.old5af52*1\??\C:\Windows\SystemTemp\CopilotUpdate.exe.old5af62*1\??\C:\P	RegNtPreCreateKey
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	*1\??\C:\Windows\SystemTemp\MicrosoftEdgeUpdate.exe.old122e4*1\??\C:\Windows\SystemTemp\CopilotUpdate.exe.old12352*1\??\C:\P	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75	�l  �v����(�1`1�1HO@V�H[uk`k�q�P�����m���$ �8��� B1_`�V ���	RegNtPreCreateKey

Windows API Usage

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Windows API Usage

This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.

Category	API
Anti Debug	IsDebuggerPresent
User Data Access	GetComputerNameEx GetUserDefaultLocaleName GetUserObjectInformation
Process Manipulation Evasion	NtUnmapViewOfSection ZwMapViewOfSection
Process Shell Execute	CreateProcess
Syscall Use	ntdll.dll!NtAlertThreadByThreadId ntdll.dll!NtAlpcSendWaitReceivePort ntdll.dll!NtClearEvent ntdll.dll!NtClose ntdll.dll!NtCreateEvent ntdll.dll!NtCreateFile ntdll.dll!NtCreateMutant ntdll.dll!NtCreatePrivateNamespace ntdll.dll!NtCreateSection ntdll.dll!NtCreateSemaphore Show More ntdll.dll!NtCreateThreadEx 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!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!NtReleaseWorkerFactoryWorker ntdll.dll!NtResumeThread ntdll.dll!NtSetEvent ntdll.dll!NtSetInformationFile ntdll.dll!NtSetInformationKey ntdll.dll!NtSetInformationProcess ntdll.dll!NtSetInformationThread 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

Shell Command Execution

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Shell Command Execution

This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.

C:\Users\Mlpiqqap\AppData\Local\Temp\nsf59E9.tmp\Awacs.exe ""

C:\Users\Honjcqtk\AppData\Local\Temp\nsc416A.tmp\Predatory.exe ""

C:\Users\Wzigqexl\AppData\Local\Temp\nss428A.tmp\Syndications.exe ""

C:\Users\Iniajtwm\AppData\Local\Temp\nso1ED4.tmp\Posses.exe ""