Original Issue Date:- June 4, 2019
Virus Type:-Android Malware
Severity:- Medium

Android.hiddad is an ad-distributing malware targeting android devices. The apps containing hiddad malware mostly gets 5-star ratings from infected users. Earlier the malicious apps were hosted on the Google Play store but now it has been removed from the Google Play store. The malware has the following features:

  • It hides itself after installation and displays ads periodically.
  • Install itself with genuine android app names, default android icons or YouTube downloading app.
  • It doesn’t require any suspicious permissions.
  • Malicious apps lure users to give high rating to apps to unlock complete app features. This happens mostly in gaming apps.

Indicators of Compromise:

Command and Control servers contacted:

C2 servers

  • cdn.partycross[dot]com
  • dialog.usatek[dot]eu
  • dialog-4a78.kxcdn[dot]com
  • goldapp-bcf4.kxcdn[dot]com
  • mny-3f29.kxcdn[dot]com
  • remoteapp-3d8f.kxcdn[dot]com
  • remotesettings-3f29.kxcdn[dot]com

File Hashes

  • 8a1bd531fc85034924bf4e4eac4c337b
  • c30984890d94f6571d71445fae7b0070
  • 4f6937b42d01e247480bf12598333639
  • b8865e339190ca608a60d47a49d9eeab
  • df48af1e778d962990cd2a4be3660f9f
  • 281eb6d8eee11b5c049cb4785fc27f02
  • 2dcca52562f96a1f4f57b0c634383b48
  • fe0a52e4cee084c518c74f9630e8b778
  • Fe343939daf702f0fd4c8767d23b2480

Malicious App names:

  • com.coloringkids.color
  • com.draw_dresses.dawsigdraw
  • horror.clown.grandpa
  • com.lovesms.messageslove
  • com.hemanlia.cityracing.parking
  • com.wastickerapps.flags.stickers
  • com.wastickerapps.heart.stickers
  • com.wastickerapps.animals.stickers
  • com.wastickerapps.espana.stickers
  • com.wastickerapps.nodrugs.stickers

Best Practices:

  • If you have been infected by Apps such as those mentioned above, kindly uninstall it and if required, reinstall the apps from authentic app stores.
  • Do not download and install applications from untrusted sources [offered via unknown websites/ links on unscrupulous messages]. Install applications downloaded from reputed application market only.
  • Install and maintain updated antivirus solution on android devices. Scan the suspected device with antivirus solutions to detect and clean infections.
  • Prior to downloading / installing apps on android devices (even from Google Play Store), Always review the app details, number of downloads, user reviews, comments and "ADDITIONAL INFORMATION" section.
  • Verify app permissions and grant only those permissions which have relevant context for the app's purpose.
  • In settings, do not enable installation of apps from "Untrusted Sources".
  • Exercise caution while visiting trusted/untrusted sites for clicking links.
  • Install Android updates and patches as and when available from Android device vendors.
  • Users are advised to use device encryption or encrypting external SD card feature available with most of the android OS.
  • Do not download or open attachment in emails received from untrusted sources or unexpectedly received from trusted users.
  • Avoid using unsecured, unknown Wi-Fi networks. There may be rogue Wi-Fi access points at public places used for distributing malicious applications.
  • Confirm that the banking app you’re using is the official, verified version.
  • If anything looks awry or suddenly unfamiliar, check in with your bank’s customer service team.
  • Use two-factor authentication if it’s available.
  • Make sure you have a strong AI-powered mobile antivirus installed to detect and block this kind of tricky malware if it ever makes its way onto your system.
  • Refer to security best practices for mobile Phone users: