Analysis

  • custom tags

    c2dropperexfiltrationobfuscatedotpoverlaysmsspywarestealer
  • max time kernel
    146s
  • max time network
    151s
  • platform
    android-11_x64
  • resource
    android-x64-arm64-20260325-en
  • resource tags

    arch:armarch:arm64arch:x64arch:x86image:android-x64-arm64-20260325-enlocale:en-usos:android-11-x64system
  • submitted
    19/08/2026, 00:58

General

  • Target
    faa774978f43368357f553a1e45a2f9465fcfa50c6c09dbf6004304db03bc641.apk
  • Size 1.1MB
  • Sample260819-bbwekstfle
  • SHA256 faa774978f43368357f553a1e45a2f9465fcfa50c6c09dbf6004304db03bc641
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • octo

C2
  • https://64.89.163.37/ZWFlY2Q1NjdmZmI3/

  • https://46.151.182.213/ZWFlY2Q1NjdmZmI3/

  • https://a93f6d2b7SDSGx0k1m9q4r8s5v.com/ZWFlY2Q1NjdmZmI3/

  • https://h6d23bsdgsdsgsd8d7f1qk4m5x.com/ZWFlY2Q1NjdmZmI3/

  • https://5f46236sdgagjkkfhfhdxzh1k9m8s7q4x.com/ZWFlY2Q1NjdmZmI3/

  • https://34g9s7b6sdgjkkjkhjkgdsg0f6k1m8q5x.com/ZWFlY2Q1NjdmZmI3/

  • https://344d9g3sdgsgs8d1kjhjfjghdkhk7m5f2x.com/ZWFlY2Q1NjdmZmI3/

  • https://54sdf7sdskjjghgfkmdg3b6a0d1k9m8q.com/ZWFlY2Q1NjdmZmI3/

rc4.plain

Extracted

Family
  • octo

C2
  • https://64.89.163.37/ZWFlY2Q1NjdmZmI3/

  • https://46.151.182.213/ZWFlY2Q1NjdmZmI3/

  • https://a93f6d2b7SDSGx0k1m9q4r8s5v.com/ZWFlY2Q1NjdmZmI3/

  • https://h6d23bsdgsdsgsd8d7f1qk4m5x.com/ZWFlY2Q1NjdmZmI3/

  • https://5f46236sdgagjkkfhfhdxzh1k9m8s7q4x.com/ZWFlY2Q1NjdmZmI3/

  • https://34g9s7b6sdgjkkjkhjkgdsg0f6k1m8q5x.com/ZWFlY2Q1NjdmZmI3/

  • https://344d9g3sdgsgs8d1kjhjfjghdkhk7m5f2x.com/ZWFlY2Q1NjdmZmI3/

  • https://54sdf7sdskjjghgfkmdg3b6a0d1k9m8q.com/ZWFlY2Q1NjdmZmI3/

AES_key

Signatures

  • Family: Octo

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

  • Octo payload 1 IoCs
  • Accessibility-driven UI automation to self-grant permissions 1 IoCs

    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.

  • Android banker: accessibility service abuse with overlay injection 1 IoCs

    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.

  • Contact harvesting with SMS self-propagation 1 IoCs

    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.

  • Notification listener abuse for OTP and message theft 1 IoCs

    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

  • Persistent WebSocket channel used for remote tasking 1 IoCs

    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.

  • Runtime string decryption with reflective method dispatch 1 IoCs

    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.

  • Silent screen capture via MediaProjection 1 IoCs

    Acquires a MediaProjection session and pipes the virtual display into an image reader or encoder, enabling continuous capture of everything shown on screen including credentials and one-time codes. Combined with accessibility auto-approval this runs without further user interaction.

  • Loads dropped Dex/Jar 1 TTPs 2 IoCs

    Runs executable file dropped to the device during analysis.

  • Makes use of the framework's Accessibility service 4 TTPs 2 IoCs

    Retrieves information displayed on the phone screen using AccessibilityService.

  • Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
  • Queries the phone number (MSISDN for GSM devices) 1 TTPs
  • Acquires the wake lock 1 IoCs
  • Makes use of the framework's foreground persistence service 1 TTPs 1 IoCs

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

  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
  • Reads information about phone network operator. 1 TTPs
  • Schedules tasks to execute at a specified time 1 TTPs 1 IoCs

    Application may abuse the framework's APIs to perform task scheduling for initial or recurring execution of malicious code.

  • Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs

Processes

  • com.morningriver8
    1⤵
    • Loads dropped Dex/Jar
    • Makes use of the framework's Accessibility service
    • Acquires the wake lock
    • Makes use of the framework's foreground persistence service
    • Queries the mobile country code (MCC)
    • Schedules tasks to execute at a specified time
    • Uses Crypto APIs (Might try to encrypt user data)
    PID:4812

Network

        MITRE ATT&CK Mobile v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        rppeihqw.cur.prof

        • Path /data/data/com.morningriver8/cache/oat/rppeihqw.cur.prof
        • Size 2KB
        • SHA256 bbddc2d2b6adec501f3ad5a1a9d917fb2c0a4a984592263f988a68ef36aba0c6
        • MD5 SHA1 SHA512 TLSH

        rppeihqw

        • Path /data/data/com.morningriver8/cache/rppeihqw
        • Size 1013KB
        • SHA256 d9647737c30bcd6888723bd7d81192958a79cd855f5d91ba15bccd5163fa1f8e
        • MD5 SHA1 SHA512 SSDEEP TLSH