Threat Database Trojans Trojan.Downloader.Delf.A

Trojan.Downloader.Delf.A

By CagedTech in Trojans
Published:
Last updated:

Threat Scorecard

Threat Level: 90 % (High)
Infected Computers: 29
First Seen: July 24, 2009
Last Seen: August 2, 2024
OS(es) Affected: Windows

The detection of Trojan.Downloader.Delf.A on your system indicates a potential security threat that requires immediate attention. This Trojan-type threat can compromise your computer's security and put your personal data at risk. It is essential to understand the nature of this threat and take prompt action to remove it from your system.

What Is Trojan.Downloader.Delf.A?

Trojan.Downloader.Delf.A is a type of malware that can download and install additional malicious software on your computer without your knowledge or consent. Trojans are often disguised as legitimate programs or files, making them difficult to detect. They can be spread through various means, including infected software downloads, email attachments, or exploited vulnerabilities in your system.

How Trojan.Downloader.Delf.A Operates

Once Trojan.Downloader.Delf.A infects your system, it can connect to a remote server to download and install additional malware. This can include keyloggers, ransomware, or other types of malicious software. The Trojan can also modify your system settings, create new user accounts, or disable security software to maintain its presence on your computer. It may also attempt to communicate with its creators or other infected systems to receive updates or transmit stolen data.

Symptoms of Infection

Identifying a Trojan infection can be challenging, as it often does not display obvious symptoms. However, you may notice some unusual behavior on your computer, such as slow performance, frequent crashes, or unfamiliar programs running in the background. You may also receive alerts from your security software or notice that your browser settings have been changed without your consent. Additionally, you may experience unexpected pop-ups, redirects, or suspicious network activity.

  • Unexplained changes to your system settings or browser configuration
  • Unfamiliar programs or icons on your desktop or start menu
  • Slow system performance or frequent crashes
  • Security software alerts or warnings
  • Unusual network activity or suspicious connections

How to Remove Trojan.Downloader.Delf.A

  1. Boot your computer in Safe Mode with Networking to prevent the Trojan from loading and to allow your security software to run more effectively.
  2. Run a full scan with a reputable anti-malware tool, such as SpyHunter, to detect and remove the Trojan and any associated malware.
  3. Uninstall any suspicious programs or software that you do not recognize or that were installed without your consent.
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or settings.
  5. Reboot your computer and run another full scan with your anti-malware tool to ensure that the Trojan and all associated malware have been removed.

Conclusion

Removing Trojan.Downloader.Delf.A from your system requires a combination of technical expertise and caution. It is essential to follow the steps outlined above and to use reputable security software to detect and remove the Trojan and any associated malware. Remember to always be cautious when downloading software or opening email attachments, and keep your operating system and security software up to date to prevent future infections. By taking prompt action, you can help protect your personal data and prevent further damage to your system.

Aliases

6 security vendors flagged this file as malicious.

Antivirus Vendor Detection
CAT-QuickHeal TrojanDownloader.Delf.dpe
AVG Downloader.Generic6.ABUH
Prevx1 Generic.Rootkit
Fortinet W32/Delf.DPE!tr.dldr
F-Secure Trojan-Downloader.Win32.Delf.dpe
F-Prot W32/D_Downloader!GSA

SpyHunter Detects & Remove Trojan.Downloader.Delf.A

File System Details

Trojan.Downloader.Delf.A may create the following file(s):
# File Name MD5 Detections
1. perfs.exe a7e97a28d2bb0681b06e675e3933fc2d 0
More files

Analysis Report

General information

Family Name: Trojan.Delf.A
Signature status: No Signature

Known Samples

MD5: f5e75624592210aa2be9d25a3a4b8b76
SHA1: 6be55ff170ef6797b9dfc0a4c502e57a3ca8299c
SHA256: C11E90252ED02E5C1F64C2E7195FE4C8023673B8CF722CCB310971EEEA78455A
File Size: 2.99 MB, 2992665 bytes
MD5: 5249b7f3557cadbf6372525bdd2a92a8
SHA1: 475b08166edaf838c104b26c7f9480225ecc6095
SHA256: 074B94A323EF0A5E7AAB7AFC414669CD6AB1AD60B908C04F64B58037C2251B1E
File Size: 3.30 MB, 3299862 bytes
MD5: 60f3da3789d6132cf588bf3d5c9055e8
SHA1: 342c50bc3a74c7707cba35f5b13a42d8cce5d98d
SHA256: FFD0EB3BBC646FDFBB064D82DF8630C976D80649FF0A1FE5F3457DB412E45D36
File Size: 2.99 MB, 2992665 bytes
MD5: ceec861babdca3b3a2c1952cf8139733
SHA1: da8882f914f9af77b50792ffc0f09df59f4a2046
SHA256: CB90E242533F251EE062C00C086BDF56038BFF444134FEADEBB8C92C151893E3
File Size: 2.99 MB, 2992665 bytes
MD5: aba4f592c6999ba2d87c194878f36423
SHA1: a2ac4a76795d032adf2ecab5ec92a151d08a7930
SHA256: 49B1DE2637A790D4D9CC53968FFC9F5F386A21A95A58017A9F38D4923020461C
File Size: 3.11 MB, 3106474 bytes
Show More
MD5: def4af4acf1b642cd01f7a287141b535
SHA1: 9bd46a84b2f14415ebc7e101420b8aac6798ba6b
SHA256: F81249A92B6AE1769A56E9B621BF13957CC3F91550E59F31D9C338B460EBDB5A
File Size: 3.30 MB, 3299862 bytes
MD5: 830def0d532067178765cbf19f2875dc
SHA1: b77c8f080f62fb6900a7d238a61828a1e17be251
SHA256: 021239DCA90980AC146BD16A49DB76A44BAE49E6367882141A72DF1448D25F43
File Size: 2.99 MB, 2992665 bytes
MD5: cd5e338ba1407f642724703bdf63835f
SHA1: f349c6eeea17c99a72edff2a0189f89cbcff610d
SHA256: D779AD4922FBB445842BC635EC892A70A59A65214D11638C56DAF1EEAED2FFC4
File Size: 2.99 MB, 2992665 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have security information
  • File has exports table
  • File has TLS 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
Show More
  • 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
File Version 1.0.0.0
Product Version 1.0.0.0

File Traits

  • 2+ executable sections
  • big overlay
  • MZ (In Overlay)
  • VirtualQueryEx
  • x86

Block Information

Total Blocks: 7,551
Potentially Malicious Blocks: 123
Whitelisted Blocks: 7,428
Unknown Blocks: 0

Visual Map

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... Data truncated
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

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Show More
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Files Modified

File Attributes
c:\users\user\appdata\local\rcx1187.tmp Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\rcx39d0.tmp Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\svchost.exe Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\svchost.exe Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144
c:\users\user\appdata\local\svchost.exe Synchronize,Write Attributes
c:\users\user\appdata\local\svchost.exe Synchronize,Write Data
c:\users\user\appdata\local\temp\icsys.ico Generic Write,Read Attributes
c:\users\user\appdata\roaming\rcx11a8.tmp Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\roaming\rcx3a00.tmp Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\roaming\spoolsv.exe Generic Read,Write Data,Write Attributes,Write extended,Append data
Show More
c:\users\user\appdata\roaming\spoolsv.exe Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144
c:\users\user\appdata\roaming\spoolsv.exe Synchronize,Write Attributes
c:\users\user\appdata\roaming\spoolsv.exe Synchronize,Write Data
c:\windows\rcx1167.tmp Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\windows\rcx39b0.tmp Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\windows\wininit.exe Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\windows\wininit.exe Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144
c:\windows\wininit.exe Synchronize,Write Attributes
c:\windows\wininit.exe Synchronize,Write Data

Registry Modifications

Key::Value Data API Name
HKLM\software\microsoft\windows\currentversion\policies\system::consentpromptbehavioradmin RegNtPreCreateKey
HKLM\software\microsoft\windows\currentversion\policies\system::enablelua RegNtPreCreateKey
HKLM\software\microsoft\windows\currentversion\policies\system::promptonsecuredesktop RegNtPreCreateKey

Windows API Usage

Category API
User Data Access
  • GetComputerName
  • GetUserName
  • GetUserObjectInformation
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • CreateProcess

Shell Command Execution

c:\windows\wininit.exe
c:\users\jlgdnptl\appdata\local\svchost.exe
c:\users\fmxdrkkj\appdata\local\svchost.exe