Extracted

• • Target
    315a7a626ea7b7ed34175cf75ed0b3ced9dcc1a6ab3cf03f16934560f49780c7.apk
  • Size 4.8MB
  • SHA256 315a7a626ea7b7ed34175cf75ed0b3ced9dcc1a6ab3cf03f16934560f49780c7
  • MD5 83d42ce6e28f24b2bd3685eeec139ad8
  • SHA1 39b0e12038f37242cc047129d44ec12a06f15ef3
  • SHA512 cec72805d5ce8334adf97d581ebd5fe72399071714530c7b2bc5ef2dacc1d800b08f3076deb8cab3e1654c6b1222a0099372a5c5fd3e68de44583ff7ff56e996
  • SSDEEP 49152:pRsEXJGxKlgj7Q45iS7xrGWviA8stjVKScLS5HxzzdhImm1aegkh:pRsbx0gj7J5iSRGIFVKsfzdTm1aeXh
  • TLSH
    T15D36CF03B79F8979F9C2BEB8424B6376A9206C28A76050DF4A05D6106D733E5AF3D7C1
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  10^/10

  bankercollectioncredential_accessdefense_evasiondiscoverydropperevasionoctoimpactinfostealerobfuscatedotpoverlaypersistenceratsmsspywarestealertrojan

  • Family: Octo

    Octo is a banking malware with remote access capabilities first seen in April 2022.

    bankertrojaninfostealerratocto

  • Octo payload

  • Accessibility-driven UI automation to self-grant permissions

    Locates nodes in the Settings or package-installer user interface by text or view identifier and dispatches synthetic clicks. This lets the application approve its own permission dialogs, complete side-loading, and intercept attempts to reach the uninstall screen without any real user consent.

    evasionpersistencedropper

  • Android SMS interception and OTP exfiltration

    Registers a high-priority SMS_RECEIVED receiver, parses inbound message bodies and aborts the broadcast to hide messages from the user, alongside network exfiltration primitives. This is the standard 2FA/OTP theft pattern used to complete fraudulent transactions.

    stealersmsotp

  • Android banker: accessibility service abuse with overlay injection

    DEX references AccessibilityService event hooks together with window-overlay creation and credential-capture primitives. This combination is the canonical Android banking-trojan pattern: the app reads screen content and injects fake login windows over legitimate banking apps.

    bankertrojanoverlay

  • Boot-triggered restart with disguised foreground service

    Restarts itself on device boot and holds a foreground service with a low-visibility notification channel, keeping the process alive across reboots and outside normal background limits. Malicious use is distinguished by pairing this with surveillance or remote-control primitives.

    persistence

  • Keylogging via accessibility text-change events

    Subscribes to text-change and view-focus accessibility events and reads the text of nodes belonging to other applications, capturing everything typed on the device including passwords entered into unrelated apps. Password-field flags are typically inspected so credential entry can be prioritised.

    stealerspywarebanker

  • Notification listener abuse for OTP and message theft

    Binds a notification listener service and reads posted notification content, optionally dismissing notifications afterwards to hide them. This harvests one-time passcodes and private messages without ever requesting SMS permissions, which is why it has largely replaced SMS interception in modern ban

    stealerotpbanker

  • Runtime string decryption with reflective method dispatch

    Combines symmetric decryption or base64 decoding of embedded string tables with reflective class and method resolution, so sensitive API names never appear in plaintext. This defeats naive string-based detection and indicates deliberate anti-analysis engineering.

    obfuscatedevasion

  • Scripted prompt coaching the user to enable Accessibility

    Contains step-by-step instructional text walking the victim through enabling an accessibility service. Because Android deliberately makes this flow difficult, malware ships explicit coaching copy; the presence of such a script alongside an accessibility service is a strong abuse indicator.

    bankerratoverlay

  • Loads dropped Dex/Jar

    Runs executable file dropped to the device during analysis.

    evasion

  • Makes use of the framework's Accessibility service

    Retrieves information displayed on the phone screen using AccessibilityService.

    collectiondefense_evasioncredential_access

  • Obtains sensitive information copied to the device clipboard

    Application may abuse the framework's APIs to obtain sensitive information copied to the device clipboard.

    collectioncredential_accessimpact

  • Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

    bankerdiscovery

  • Queries the phone number (MSISDN for GSM devices)

    discovery

  • Acquires the wake lock

  • Makes use of the framework's foreground persistence service

    Application may abuse the framework's foreground service to continue running in the foreground.

    defense_evasionpersistence

  • Queries the mobile country code (MCC)

    discovery

  • Reads information about phone network operator.

    discovery

  • Requests disabling of battery optimizations (often used to enable hiding in the background).

    defense_evasion
  behavioral1