Extracted

• • Target
    7bb9d049ebd45bfc84e68d03db315f003d040af4a3856315ca75c5166a34503e.apk
  • Size 10.9MB
  • SHA256 7bb9d049ebd45bfc84e68d03db315f003d040af4a3856315ca75c5166a34503e
  • MD5 7622b200c3e9c4a12413b965b67a8ff4
  • SHA1 e99fecf4e9edef9c7b44ef2181a814d093da48d5
  • SHA512 23c9557dd9e999ecab15038314f4198093e8b5c10ad66a1f1151f73ad3ab35aa7d14e1e837e9adbf82fa3ea9d0fb92da337cd84f29a1e4fd26f524bc12323730
  • SSDEEP 196608:7nB2N9RArFb+/nerbOoOpTik4rhRRplJRjWO1o2rkROBHx7okTT6mm2/vEqN/7aE:7QHarFbCnwtxHDlrjpL+ePdcWaLOp
  • TLSH
    T176B63396AB40563BC876443241AB4B2277A76D9985A3DB1F3A08710CBC73A4C1FFDE5C
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  9^/10

  discoverydropperevasionobfuscatedpersistencecollectioncredential_accessimpact

  • Encrypted or packed staged payload inside Android package

    Extracted asset shows near-random entropy without a recognised container header, indicating an encrypted secondary payload staged for runtime decryption and loading. Correlate with any runtime class-loading detection on the same sample.

    obfuscateddropper

  • Loads dropped Dex/Jar

    Runs executable file dropped to the device during analysis.

    evasion

  • 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 the mobile country code (MCC)

    discovery
  behavioral1behavioral2behavioral3
• • Target
    1_f5558645c8.cat
  • Size 9.4MB
  • SHA256 8daf9ed069291b148847ebf8ddb01d6e5dfa32ddc13117497cb94362e9e222b8
  • MD5 b85f43c7ed38d7217e7413a5661bdb6c
  • SHA1 0b9915c68c173f461f2356145c19abf269b0e120
  • SHA512 efe8e97d8370827db2886331fe2d27b18d1d065bd7d08c04f1d68c31de9a397ea6c066d89fa587a788f69673166182da67f092dd1fb2b4eb4f1cd4728a9c7d62
  • SSDEEP 98304:zk3tooj7GVKwC5iSRGAPRsGFa7Bdn+p0PIfEiLRTLs94dy2A4P7dTRBVLlnlwnWT:g3t/j7GU7rNRY7T5iZIS5V7hRBHlZ
  • TLSH
    T163A6C01777864F39F88D7934814F13378513B91967A151DB096BC100EE2EBF2AEB9B82
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  10^/10

  bankerc2collectioncredential_accessdefense_evasiondiscoverydropperevasionexfiltrationoctoimpactinfostealerobfuscatedotpoverlaypersistenceratsmsspywarestealertrojan

  • 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

  • Contact harvesting with SMS self-propagation

    Reads the device contact list and sends messages to the retrieved numbers, the distribution mechanism behind SMS worm campaigns. The victim's own address book becomes the delivery channel, which is why these campaigns spread rapidly within a region.

    smstrojanexfiltration

  • 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

  • Persistent WebSocket channel used for remote tasking

    Bundles a WebSocket client and opens a long-lived bidirectional connection, the transport typically used by Android remote-access tooling for live command dispatch and streaming. Suspicious when paired with surveillance capabilities rather than an obvious in-app messaging feature.

    c2rat

  • 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

  • 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

  • Performs UI accessibility actions on behalf of the user

    Application may abuse the accessibility service to prevent their removal.

    evasion

  • Queries the mobile country code (MCC)

    discovery

  • Reads information about phone network operator.

    discovery

  • Requests enabling of the accessibility settings.

  behavioral4