Threat Database Trojans Trojan.MSIL.Downloader.FSB

Trojan.MSIL.Downloader.FSB

By CagedTech in Trojans

Analysis Report

General information

Family Name: Trojan.MSIL.Downloader.FSB
Signature status: Hash Mismatch

Known Samples

MD5: 9994d0ed9cf5fc8740b6173eaa7a649a
SHA1: 184776ffc2b587c82192c1b34c5062b2f91a4519
SHA256: C927F754A367CEC65DDE372E6955D1D70E52A04A4BEE037E244DF2F74125D75F
File Size: 5.39 MB, 5389392 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File is .NET application
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
Comments 2E<;:6B6>IA:83@?F6?9
Company Name F<6;5<??B86D2BG>
File Description >FGF;<8JD:EB25I3GHI
File Version 9.26.48.175
Internal Name 11.exe
Legal Copyright Copyright © 1988 F<6;5<??B86D2BG>. All rights reserved.
Original Filename 11.exe
Product Name >FGF;<8JD:EB25I3GHI
Product Version 9.26.48.175

Digital Signatures

Signer Root Status
Ghisler Software GmbH Symantec Class 3 SHA256 Code Signing CA Hash Mismatch
Ghisler Software GmbH VeriSign Class 3 Code Signing 2010 CA Hash Mismatch

File Traits

  • .NET
  • NewLateBinding
  • x86

Block Information

Total Blocks: 355
Potentially Malicious Blocks: 201
Whitelisted Blocks: 154
Unknown Blocks: 0

Visual Map

0 0 0 x x 0 0 0 0 0 x 0 x 0 0 x 0 0 0 0 0 0 0 0 0 0 0 x x x x x x x 0 0 0 x 0 x x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x x x x x x x x x x x x x x x x x x x x x x 0 0 0 0 x x x x x x 0 0 x x x x x 0 0 0 0 0 0 0 0 0 x x x x x x x x x x x x x x x x 0 x x x x x x 0 x x x x x 0 0 x x x x x x x x x 0 x x x x x 0 0 x 0 0 0 0 0 x x 0 0 x 0 x x x x 0 x x x x x x x x x x x x x x x x x x x x x x x x x x 0 0 0 x x x x x x x x x x x x x 0 0 0 x x 0 0 0 0 x 0 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 0 x x x x x x x x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x x x x x x x x x 0 0 0 0 0 0 0 0 0 0 x x x x x
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • MSIL.Downloader.FSB

Registry Modifications

Key::Value Data API Name
HKLM\software\wow6432node\microsoft\tracing::enableconsoletracing RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasapi32::enablefiletracing RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasapi32::enableautofiletracing RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasapi32::enableconsoletracing RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasapi32::filetracingmask ￿ RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasapi32::consoletracingmask ￿ RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasapi32::maxfilesize  RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasapi32::filedirectory %windir%\tracing RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasmancs::enablefiletracing RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasmancs::enableautofiletracing RegNtPreCreateKey
Show More
HKLM\software\wow6432node\microsoft\tracing\rasmancs::enableconsoletracing RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasmancs::filetracingmask ￿ RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasmancs::consoletracingmask ￿ RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasmancs::maxfilesize  RegNtPreCreateKey
HKLM\software\wow6432node\microsoft\tracing\rasmancs::filedirectory %windir%\tracing RegNtPreCreateKey

Windows API Usage

Category API
User Data Access
  • GetComputerName
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
Other Suspicious
  • AdjustTokenPrivileges
Network Winsock2
  • WSAConnect
  • WSASocket
  • WSAStartup
  • WSAttemptAutodialName
Network Winsock
  • closesocket
  • freeaddrinfo
  • getaddrinfo
  • recv
  • send
  • setsockopt
Network Winhttp
  • WinHttpOpen
Network Info Queried
  • GetAdaptersAddresses
  • GetNetworkParams