Analysis by: John Anthony Banes
ALIASES:

Downloader.Win32.OpenCandy.lc (Kaspersky); a variant of Win32/MagicalJellyBean.B (NOD32)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be manually installed by a user.

However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: 1,199,992 bytes
File Type: EXE
Initial Samples Received Date: 04 Mar 2019

Arrival Details

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It may be manually installed by a user.

Installation

This Potentially Unwanted Application adds the following folders:

  • %Program Files%\Magical Jelly Bean
  • %Start Menu%\Programs\KeyFinder
  • %User Temp%\is-{random}.tmp
  • %User Temp%\is-{random}.tmp\_isetup

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), 7 (32-bit), and 8 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), 7 (64-bit), and 8 (64-bit).. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista, 7, and 8.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.)

It drops the following files:

  • %Program Files%\Magical Jelly Bean\is-{random}.tmp
  • %Program Files%\Magical Jelly Bean\keyfinder.cfg
  • %Program Files%\Magical Jelly Bean\keyfinder.exe
  • %Program Files%\Magical Jelly Bean\unins000.dat
  • %Program Files%\Magical Jelly Bean\unins000.exe
  • %Program Files%\Magical Jelly Bean\unins000.msg
  • %Start Menu%\Programs\KeyFinder\KeyFinder on the Web.url
  • %Start Menu%\Programs\KeyFinder\KeyFinder.lnk
  • %Start Menu%\Programs\KeyFinder\Uninstall KeyFinder.lnk
  • %User Temp%\is-{random}.tmp\_isetup\_shfoldr.dll
  • %User Temp%\is-{random}.tmp\{installer filename}.tmp
  • %User Temp%\is-{random}.tmp\OCSetupHlp.dll

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), 7 (32-bit), and 8 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), 7 (64-bit), and 8 (64-bit).. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista, 7, and 8.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.)

Other System Modifications

This Potentially Unwanted Application adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
Inno Setup: Setup Version = 5.5.2 (u)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
Inno Setup: Icon Group = KeyFinder

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
Inno Setup: User = {user name}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
Inno Setup: Selected Tasks = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
Inno Setup: Deselected Tasks = desktopicon,quicklaunchicon

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
Inno Setup: Language = default

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
DisplayName = Magical Jelly Bean KeyFinder

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
DisplayIcon = %Program Files%\Magical Jelly Bean\keyfinder.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
UninstallString = %Program Files%\Magical Jelly Bean\unins000.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
QuietUninstallString = %Program Files%\Magical Jelly Bean\unins000.exe /SILENT

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
DisplayVersion = 2.0.9.8

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
Publisher = Magical Jelly Bean

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
URLInfoAbout = http://www.{BLOCKED}jellybean.com/keyfinder/

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
HelpLink = http://www.{BLOCKED}ljellybean.com/keyfinder/

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
URLUpdateInfo = http://www.{BLOCKED}ljellybean.com/keyfinder/

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
NoModify = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
NoRepair = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
InstallDate = {yyyymmdd}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
MajorVersion = 2

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
MinorVersion = 0

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
EstimatedSize = 1972

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
Inno Setup: App Path = %Program Files%\Magical Jelly Bean

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
KeyFinder_is1
InstallLocation = %Program Files%\Magical Jelly Bean\

Other Details

This Potentially Unwanted Application connects to the following possibly malicious URL:

  • http://api.{BLOCKED}ndy.com?bn={value}&bv={version}&clientv={value}&cltzone={value}&language={value}&method=get_offers&mstime=0.187&os={OS name}&product_key={value}&v={version}&signature={value}
  • http://api.{BLOCKED}ndy.com?clientv={value}&method=track_product_installed&mstime={value}&product_key={value}&v={value}&signature={value}

However, as of this writing, the said sites are inaccessible.