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Overview

overview

10

Static

static

6

20658f2bb9...aa.apk

android-9-x86

10

20658f2bb9...aa.apk

android-13-x64

10

Analysis

  • max time kernel
    146s
  • max time network
    146s
  • platform
    android_x86
  • resource
    android-x86-arm-20240624-en
  • resource tags

    androidarch:armarch:x86image:android-x86-arm-20240624-enlocale:en-usos:android-9-x86system
  • submitted
    06/02/2025, 22:03

Sharing

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General

  • Target

    20658f2bb9fd798ca424ad878ed9c1218b082d285b3a7d26a2779431dd875caa.apk

  • Size

    3.3MB

  • MD5

    1b3a682339f8361f75c35547479f80db

  • SHA1

    a28265d0c14de31240bd3b4440f06d93f728d00c

  • SHA256

    20658f2bb9fd798ca424ad878ed9c1218b082d285b3a7d26a2779431dd875caa

  • SHA512

    52f284715692813c1ea26d278ea80c2e70932aad94cdb426cfd3d4b7d32eac1b4ea5a1499d7b15b10ba44670aeb2c45f47b15a8cf47c7eee08439fcae83d13c7

  • SSDEEP

    98304:dB/UO6SNOs+DNPGKRQ9jVINEusLaaAspxVbT38jxlGgavdNRBBidd:dBB690eEushA6/lY

Score
10/10
octobankercollectioncredential_accessdefense_evasiondiscoveryevasionimpactinfostealerpersistenceratstealthtrojan

Malware Config

Extracted

Family

octo

C2

https://kobrasaldiristratejileri.xyz/MzhiMTg0NTAwOTY5S/

https://kobratehlikeanalizleri.xyz/MzhiMTg0NTAwOTY5S/

https://kobravesurprizhikayeler.xyz/MzhiMTg0NTAwOTY5S/

https://kobrayanasistemverileri.xyz/MzhiMTg0NTAwOTY5S/

https://kobrakulturvesavasanati.xyz/MzhiMTg0NTAwOTY5S/

https://kobrabilimvegizemlerdunyasi.xyz/MzhiMTg0NTAwOTY5S/

https://kobragesmisiylebilimtarihi.xyz/MzhiMTg0NTAwOTY5S/

https://kobraversanatinbirlestigi.xyz/MzhiMTg0NTAwOTY5S/

https://kobrataktiklersistematik.xyz/MzhiMTg0NTAwOTY5S/

https://kobralaryasadogasi.xyz/MzhiMTg0NTAwOTY5S/

https://kobravesavasfelsefesi.xyz/MzhiMTg0NTAwOTY5S/

https://kobratedbirvetaktik.xyz/MzhiMTg0NTAwOTY5S/

https://kobratehlikeveguvenlik.xyz/MzhiMTg0NTAwOTY5S/

https://kobravesavunmasistemi.xyz/MzhiMTg0NTAwOTY5S/

https://kobraveavlanmataktikleri.xyz/MzhiMTg0NTAwOTY5S/

https://kobrakisiselyetenekler.xyz/MzhiMTg0NTAwOTY5S/

https://kobratehlikeharitasi.xyz/MzhiMTg0NTAwOTY5S/

https://kobravesavasstratejileri.xyz/MzhiMTg0NTAwOTY5S/

https://kobrabilimveanaliz.xyz/MzhiMTg0NTAwOTY5S/

https://kobratehditveonleme.xyz/MzhiMTg0NTAwOTY5S/
rc4.plain

Extracted

Family

octo

C2

https://kobrasaldiristratejileri.xyz/MzhiMTg0NTAwOTY5S/

https://kobratehlikeanalizleri.xyz/MzhiMTg0NTAwOTY5S/

https://kobravesurprizhikayeler.xyz/MzhiMTg0NTAwOTY5S/

https://kobrayanasistemverileri.xyz/MzhiMTg0NTAwOTY5S/

https://kobrakulturvesavasanati.xyz/MzhiMTg0NTAwOTY5S/

https://kobrabilimvegizemlerdunyasi.xyz/MzhiMTg0NTAwOTY5S/

https://kobragesmisiylebilimtarihi.xyz/MzhiMTg0NTAwOTY5S/

https://kobraversanatinbirlestigi.xyz/MzhiMTg0NTAwOTY5S/

https://kobrataktiklersistematik.xyz/MzhiMTg0NTAwOTY5S/

https://kobralaryasadogasi.xyz/MzhiMTg0NTAwOTY5S/

https://kobravesavasfelsefesi.xyz/MzhiMTg0NTAwOTY5S/

https://kobratedbirvetaktik.xyz/MzhiMTg0NTAwOTY5S/

https://kobratehlikeveguvenlik.xyz/MzhiMTg0NTAwOTY5S/

https://kobravesavunmasistemi.xyz/MzhiMTg0NTAwOTY5S/

https://kobraveavlanmataktikleri.xyz/MzhiMTg0NTAwOTY5S/

https://kobrakisiselyetenekler.xyz/MzhiMTg0NTAwOTY5S/

https://kobratehlikeharitasi.xyz/MzhiMTg0NTAwOTY5S/

https://kobravesavasstratejileri.xyz/MzhiMTg0NTAwOTY5S/

https://kobrabilimveanaliz.xyz/MzhiMTg0NTAwOTY5S/

https://kobratehditveonleme.xyz/MzhiMTg0NTAwOTY5S/
Attributes
  • target_apps

    at.spardat.bcrmobile

    at.spardat.netbanking

    com.bankaustria.android.olb

    com.bmo.mobile

    com.cibc.android.mobi

    com.rbc.mobile.android

    com.scotiabank.mobile

    com.td

    cz.airbank.android

    eu.inmite.prj.kb.mobilbank

    com.bankinter.launcher

    com.kutxabank.android

    com.rsi

    com.tecnocom.cajalaboral

    es.bancopopular.nbmpopular

    es.evobanco.bancamovil

    es.lacaixa.mobile.android.newwapicon

    com.dbs.hk.dbsmbanking

    com.FubonMobileClient

    com.hangseng.rbmobile

    com.MobileTreeApp

    com.mtel.androidbea

    com.scb.breezebanking.hk

    hk.com.hsbc.hsbchkmobilebanking

    com.aff.otpdirekt

    com.ideomobile.hapoalim

    com.infrasofttech.indianBank

    com.mobikwik_new

    com.oxigen.oxigenwallet

    jp.co.aeonbank.android.passbook

AES_key

Signatures

  • Octo

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

    bankertrojaninfostealerratocto
  • Octo family
    octo
  • Octo payload 2 IoCs
  • Removes its main activity from the application launcher 1 TTPs 1 IoCs
    stealthtrojanevasion
  • Loads dropped Dex/Jar 1 TTPs 2 IoCs

    Runs executable file dropped to the device during analysis.

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

    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) 1 TTPs
    bankerdiscovery
  • Queries the phone number (MSISDN for GSM devices) 1 TTPs
    discovery
  • 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.

    defense_evasionpersistence
  • Performs UI accessibility actions on behalf of the user 1 TTPs 4 IoCs

    Application may abuse the accessibility service to prevent their removal.

    evasion
  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
    discovery
  • Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
    discovery
  • Requests accessing notifications (often used to intercept notifications before users become aware). 1 TTPs 1 IoCs
    collectioncredential_access
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
    defense_evasion
  • Requests modifying system settings. 1 IoCs
    defense_evasion
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
    persistence
  • Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
    impact

Processes

  • com.fun.walnut
    1⤵
    • Removes its main activity from the application launcher
    • 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
    • Performs UI accessibility actions on behalf of the user
    • Queries the mobile country code (MCC)
    • Requests accessing notifications (often used to intercept notifications before users become aware).
    • Requests disabling of battery optimizations (often used to enable hiding in the background).
    • Requests modifying system settings.
    • Registers a broadcast receiver at runtime (usually for listening for system events)
    • Uses Crypto APIs (Might try to encrypt user data)
    PID:4222
    • /system/bin/dex2oat --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --dex-file=/data/user/0/com.fun.walnut/app_indoor/myCFXeW.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.fun.walnut/app_indoor/oat/x86/myCFXeW.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4247

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

1
T1624

Broadcast Receivers

1
T1624.001

Foreground Persistence

1
T1541

Privilege Escalation

Defense Evasion

Download New Code at Runtime

1
T1407

Foreground Persistence

1
T1541

Hide Artifacts

2
T1628

Suppress Application Icon

1
T1628.001

User Evasion

1
T1628.002

Impair Defenses

1
T1629

Prevent Application Removal

1
T1629.001

Input Injection

1
T1516

Credential Access

Access Notifications

1
T1517

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Discovery

Software Discovery

1
T1418

Security Software Discovery

1
T1418.001

System Network Configuration Discovery

3
T1422

Lateral Movement

Collection

Access Notifications

1
T1517

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Screen Capture

1
T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

1
T1471

Input Injection

1
T1516

Replay Monitor

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Downloads

  • /data/data/com.fun.walnut/.qcom.fun.walnut
    Filesize

    48B

    MD5

    046a414913add6f5bb60072c7db819b6

    SHA1

    451ee4f6809260aec622d772fd329c7d0297a842

    SHA256

    b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a

    SHA512

    4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

    Download Submit

  • /data/data/com.fun.walnut/app_indoor/myCFXeW.json
    Filesize

    153KB

    MD5

    74a756c8e2d16ef1645bac035ec8efc7

    SHA1

    3eec99e75bad7d27f88980882aa2ebc2e4a66928

    SHA256

    35d8a346d06deddb687df9f1ad632b8385007f4a6b1b42fae094e6b97cc52a53

    SHA512

    036e4993aff88b6d16e95bdd757cf3b1f804979d03984680740b9af1a0b1f3b442805c659402966b5499389967c3d8032ee52f6c401efa3abaa887f3d7977990

    Download Submit

  • /data/data/com.fun.walnut/app_indoor/myCFXeW.json
    Filesize

    153KB

    MD5

    44e92bd4ded54ac1782132c3785ee96a

    SHA1

    7cbdae8ceae18a779a7cc3697085b1785f7636b7

    SHA256

    28b107173e1f080c568631bf06de4938b7ed474bcd626185dbe02d0458b37433

    SHA512

    c4a448dbe1b8b67c706fe843736c45952566be669bda720fb63ea37ae2be1be0052730f79ccfedd568e8c2b02983dfafbb91204c41dd342675661977b03302d4

    Download Submit

  • /data/data/com.fun.walnut/kl.txt
    Filesize

    45B

    MD5

    4e0c5964bef1c3e3eed7e22b8ff9f49e

    SHA1

    76272865e1b7589a436ecd256c4896a7c0a4fd1f

    SHA256

    3909bb607cc82198ad3ddb74e485eecb9f7bb4e2e6b710fbe969842706047a42

    SHA512

    eee445f0a155e042406cb34e4eab4ab5d41db82193c26b0d1501ba635e3e151e4e31e55bedc9b202ac5793e6badabc08846f6b5c1cd058faa0acd04478420128

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  • /data/data/com.fun.walnut/kl.txt
    Filesize

    423B

    MD5

    6ddd57c21e5f425ee0fb243f25ea2e9b

    SHA1

    760f31110f40c3545857dcf218e3f74fc7b3348e

    SHA256

    6c11c422b0064252d2dbbc8ad6af2acebfa8e9022c41cb68d074a9994fbff39e

    SHA512

    de038db787c604de318361622ccbdeec4643ca7009c957a340b2ccdef0b2c1e197802189622e90500bcd59250b14e2862a73efcda3dcb34962a0bf35057eb854

    Download Submit

  • /data/data/com.fun.walnut/kl.txt
    Filesize

    230B

    MD5

    160d5f8a7d2528f4405242e39fc3126b

    SHA1

    e1182b2f86ab3b451672acdf6d4839f1261616c9

    SHA256

    7d36289974839f36b94ea750afc4e7026625b073e4e837698d8cf741571ce9f4

    SHA512

    4dc75c170925f15855ac05753e98fcdcd4118213b7d31d442b480d2fc72bc29f4f9739f4d9cbc5c50b1f2e462f2b93f7a937876b9b527d5f0eb4cbda24c7ac75

    Download Submit

  • /data/data/com.fun.walnut/kl.txt
    Filesize

    54B

    MD5

    136682d74ea2b2dfc1799fe4d94e2cad

    SHA1

    c2057e73934171c1ee17d5bb569af2f814ed7eb4

    SHA256

    6e7dd4b0c28b7eec35b05b440f75763e083befaf74e03f293d68eaf430906d63

    SHA512

    4aa7bc43a6014bd0850913bf32d7aa32f5811fa39cdb49f5fd419c43642f67d40bb06409d7e6d5f0d2e846311cd0f23fc5ad83118a0442b1d786e9da1808f242

    Download Submit

  • /data/data/com.fun.walnut/kl.txt
    Filesize

    63B

    MD5

    9e09cf036561358e5d3b275e0c31f307

    SHA1

    d5df7364c6604596100219550297108e3a999d15

    SHA256

    ce1e255d4ffc39adca242435bcc5435df39cc46042a7933d31a05bd8a3a12a66

    SHA512

    567535da4b57ebce31e93ab236d3c65dd7afc9c7065523c770d0931a2eb228af0b6a6a3461b5e4f2a927c464459f1c12a489e2d9da029ffe931f5e1d59449a32

    Download Submit

  • /data/user/0/com.fun.walnut/app_indoor/myCFXeW.json
    Filesize

    451KB

    MD5

    564d2c2210ee7fb80ced0d15983a5f11

    SHA1

    dc3ded2643fa976b854041ab5417b98fd642a368

    SHA256

    acce01e7e7b8fd6cbccae0783b14fe10ba0f434d7abfc2291325852134f4dd7d

    SHA512

    213bdb8ee3bda9084a03733146e2a55ea9da5a530c7af9a2ddcfb3c4c81d2b21bf1d7194ffc1028178070fc185ea7a3ab7c5d0c3a569ae860c1722b9a74c334f

    Download Submit

  • /data/user/0/com.fun.walnut/app_indoor/myCFXeW.json
    Filesize

    451KB

    MD5

    2b44a74bdb8cc2ab33ff1a434fb4ea0e

    SHA1

    b1ec5c157e000ec4a18e1fb95c0e04f1c2c4aa2a

    SHA256

    b0f592378c01d5a6ca3ba3ce1d15cc3b875f5fb41f0a3e911e5b5916094348cf

    SHA512

    0a0d6561a72a8e00fbd3d65f83be9213c949276579cc1f97f49f9ac447f9b04d5a989f9dedaf85548f13c31cbca65275bb38488ce7b27146f98f957bee6591c8

    Download Submit