Trojan.DDoSTF.S8420 (file analysis)

The Trojan.DDoSTF.S8420 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 Trojan.DDoSTF.S8420 virus can do?

• Attempts to connect to a dead IP:Port (3 unique times)
• Possible date expiration check, exits too soon after checking local time
• Reads data out of its own binary image
• Drops a binary and executes it
• Unconventionial binary language: Chinese (Simplified)
• Unconventionial language used in binary resources: Chinese (Simplified)
• The binary likely contains encrypted or compressed data.
• The executable is compressed using UPX
• Deletes its original binary from disk
• Attempts to repeatedly call a single API many times in order to delay analysis time
• Installs itself for autorun at Windows startup
• Creates a hidden or system file
• Creates a copy of itself

Related domains:

How to determine Trojan.DDoSTF.S8420?

File Info:
crc32: 39029282
md5: 45f71b9d5a0677e07e3588f5e3cf1dca
name: 45F71B9D5A0677E07E3588F5E3CF1DCA.mlw
sha1: 0172568910c9f359e940bf7da8239f753ce3b8fb
sha256: 9774e30e9eb56d8af439d141cd838736a19b120b4b53ea633cf7071e551275cd
sha512: d5b75956a14fa8ca9b593d0d75b352f91cc01f206af079135a1f1073481d7b29995cc893f41925a893d485bbaa5dd74b3a01a8bb8c678b66ce8558969eeb32e4
ssdeep: 384:C1I0+Fkm7SWZZYO5uez+b+hCNzfdZvJQtCzsoRs/Ivk6YsI4S0XWh9mWsm:C1I0+FNSW3YO5z+b+hCFfHE0sv/HD55
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:
LegalCopyright: ? Microsoft Corporation. All rights reserved.
InternalName: 
FileVersion: 6.1.7600.16385 (win7_rtm.090713-1255)
CompanyName: Microsoft Corporation
PrivateBuild: 
LegalTrademarks: 
Comments: 
ProductName: Microsoft? Windows? Operating System
SpecialBuild: 
ProductVersion: 6.1.7600.16385
FileDescription: Windows Enhanced Storage Password Authentication Program
OriginalFilename: EhStorAuthn.exe
Translation: 0x0804 0x04b0

Trojan.DDoSTF.S8420 also known as:

How to remove Trojan.DDoSTF.S8420?

• 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.