NSIS:Dropper-KO [Drp] (file analysis)

The NSIS:Dropper-KO [Drp] 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 NSIS:Dropper-KO [Drp] virus can do?

• Behavioural detection: Executable code extraction – unpacking
• Sample contains Overlay data
• Reads data out of its own binary image
• CAPE extracted potentially suspicious content
• Drops a binary and executes it
• The binary contains an unknown PE section name indicative of packing
• Authenticode signature is invalid
• Uses Windows utilities to create a scheduled task
• Behavioural detection: Transacted Hollowing
• Deletes executed files from disk

How to determine NSIS:Dropper-KO [Drp]?

File Info:
name: D3FF1A75F2902D865A65.mlw
path: /opt/CAPEv2/storage/binaries/ae3a1d7c1a58f2c74ed5bd168a6a466d9cc2c1fe2092fc4bdd14eb043986aef2
crc32: 9688115F
md5: d3ff1a75f2902d865a65b0e156b889bc
sha1: 33750e436d1d80b8754f9db6b0ac4ae6a354d1ab
sha256: ae3a1d7c1a58f2c74ed5bd168a6a466d9cc2c1fe2092fc4bdd14eb043986aef2
sha512: 52bc7a4a5d96933202bb337e43493834190cc6e09f8acf05bddbe71c002ffcc1605830f3747191c2e2f92f30c31ebd5de105a0a641bd97dfa33abc8cacf7e7f0
ssdeep: 12288:uaHc64b888888888888W88888888888MsscV7/9GqeMo3JM5oJI9R33rD+zG/oBO:F86JXW7/9oJTJ8NezG/aYFkJR30F6rpU
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T188F40213B3C34031F5265A35CC768044AD6779B909F0606A2EF9EB0E4EBA6C69D77F21
sha3_384: af2d0a2bba3b083fc5e6e2270ef8c843d5055980e752ae24b7c07989351085778df5d68162bca360c695a6e80aa14df5
ep_bytes: 558bec83c4a453565733c08945c48945
timestamp: 2018-06-14 13:27:46

Version Info:
Comments: This installation was built with Inno Setup.
CompanyName:                                                             
FileDescription:                                                             
FileVersion: 3.4                 
LegalCopyright:                                                                                                     
ProductName:                                                             
ProductVersion: 3.4                                               
Translation: 0x0000 0x04b0

NSIS:Dropper-KO [Drp] also known as:

How to remove NSIS:Dropper-KO [Drp]?

• 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.