Win32/TrojanDownloader.Delf.QDN (file analysis)

The Win32/TrojanDownloader.Delf.QDN 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.

What Win32/TrojanDownloader.Delf.QDN virus can do?

• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Dynamic (imported) function loading detected
• Enumerates running processes
• Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
• CAPE extracted potentially suspicious content
• The binary contains an unknown PE section name indicative of packing
• Authenticode signature is invalid
• Uses Windows utilities for basic functionality
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Detects Sandboxie through the presence of a library
• Detects SunBelt Sandbox through the presence of a library
• Behavioural detection: Injection (inter-process)
• Attempts to identify installed analysis tools by a known file location
• Creates a copy of itself
• The sample wrote data to the system hosts file.
• Anomalous binary characteristics
• Uses suspicious command line tools or Windows utilities

How to determine Win32/TrojanDownloader.Delf.QDN?

File Info:
name: FCDB353B427162605F80.mlwpath: /opt/CAPEv2/storage/binaries/f0315a33395ed81794e78a70ad767262b34cd379580e6435c496fa7e92339d55crc32: 9004EF11md5: fcdb353b427162605f807fabd739b378sha1: bf186e7528401905ce69c66ede853c20ae290bc6sha256: f0315a33395ed81794e78a70ad767262b34cd379580e6435c496fa7e92339d55sha512: d09a5e612fb33d114a6ae8791ab28d4f0bf0d7087db1bddd6395bf33c2d218cf9382c0bb9c11d549220c769f52e35fd2031c227dbb23390c7eed302611873f07ssdeep: 24576:47l0uHin1mseGNNW+S2KmZLxR309zsYyR:4752NNRZLHtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T17E657D32F242C477D533297A9C46D1DD556CFB902E24BC0B3AE81F4C8B7AB82792A157sha3_384: 1bd6255aaf9d41d20b4afc42727092aa45577e1b0440d168835a04e05392ef16b559d800c64dddd0830108f0423ab2c1ep_bytes: 558becb90b0000006a006a004975f953timestamp: 1992-06-19 22:22:17
Version Info:
0: [No Data]

Win32/TrojanDownloader.Delf.QDN also known as:

How to remove Win32/TrojanDownloader.Delf.QDN?

• 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.