Analysis

  • max time kernel
    22s
  • max time network
    37s
  • 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
    16-12-2024 02:17

General

  • Target

    base.apk

  • Size

    7.6MB

  • MD5

    4533b2231f3e08626cf63cdb8555c1ce

  • SHA1

    190a9329fafba8cc1101368020f860c0cde8b730

  • SHA256

    0d1dbbbcf2d9f6e66c931a4e0594322b4c37d4c00b31e88b4b43bcf3295da5d0

  • SHA512

    a9f37d06c6347e1bd1fcd9ccdee725cad2ebac6843324e3e2eb4300455076cbb3e796e21436c36b9c53a18e8e6294cb28153b5b6c74a12f9d8fc4131b9b44ede

  • SSDEEP

    196608:efYmEq3XnRwPrdU0nvLfPFqd9GwrQ01jElY:lLrdLDy3Q1lY

Malware Config

Extracted

Family

octo

AES_key
AES_key

Signatures

  • Octo

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

  • Octo family
  • Octo payload 1 IoCs
  • Loads dropped Dex/Jar 1 TTPs 3 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
  • Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
  • Reads information about phone network operator. 1 TTPs
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
  • Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
  • Checks CPU information 2 TTPs 1 IoCs
  • Checks memory information 2 TTPs 1 IoCs

Processes

  • com.hotspot_watchdc82
    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)
    • Requests disabling of battery optimizations (often used to enable hiding in the background).
    • Registers a broadcast receiver at runtime (usually for listening for system events)
    • Uses Crypto APIs (Might try to encrypt user data)
    • Checks CPU information
    • Checks memory information
    PID:4311
    • /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.hotspot_watchdc82/app_casual/bsgBaZ.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.hotspot_watchdc82/app_casual/oat/x86/bsgBaZ.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4337

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads

  • /data/data/com.hotspot_watchdc82/.global.com.hotspot_watchdc82

    Filesize

    48B

    MD5

    046a414913add6f5bb60072c7db819b6

    SHA1

    451ee4f6809260aec622d772fd329c7d0297a842

    SHA256

    b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a

    SHA512

    4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

  • /data/data/com.hotspot_watchdc82/app_casual/bsgBaZ.json

    Filesize

    1014B

    MD5

    cf908bf0d9762e9aa86c732041816c48

    SHA1

    58d6469ea5894ba0bc2aaf65ee13e5adcc818819

    SHA256

    9e461845f779a51a286c4828672e796eaa682fd6999860597a34ebb9e7de58b6

    SHA512

    abbefdf3eb1c2dbc862e148cd8659269b6d604a3dc574f414d02efa514a07139da48172d5789781d80639d15dbb486d8eeb55fda84a0f99c09f85efd62cee189

  • /data/data/com.hotspot_watchdc82/app_casual/bsgBaZ.json

    Filesize

    1014B

    MD5

    743fe886416c1f41786171ea5d5c5f5d

    SHA1

    087f97c3f3f89db07ea377ffaa0763bacde31811

    SHA256

    8410804acf60db712e0c63f0b9613df83285442b539177837998a586ee9e925c

    SHA512

    982f418519a7e6a111c3a0cfa392aa224b72904448fe80b8a8207ecabf2a2b4242cbd8db717b86c2255a00166f52c5ed92a3cc2e015d3bfc0498ae8121b7ba77

  • /data/data/com.hotspot_watchdc82/files/.h

    Filesize

    307KB

    MD5

    4e73947cabb5db3f92ca85004981b754

    SHA1

    6d9667fdb0280ed2dcb782b4683e422a51bdc601

    SHA256

    6db94232e756b90ed437f1bc87dc38cf20fb2e7c7a19a5e40c6c17254b7e234c

    SHA512

    be8b500a7070af1dfb53b0cf1a7b327dadc4e163a6dad905496ac228c58cd1ed87b054533917924455d35e9b300683ae33e1bcdd91935a5dbae1d693c3e13d69

  • /data/user/0/com.hotspot_watchdc82/app_casual/bsgBaZ.json

    Filesize

    1KB

    MD5

    45e8b1bd8e1b19bd446d0f1b779d3a70

    SHA1

    f8b4c3b1df1179952a29f82970b548566493144e

    SHA256

    57776b55688322d982255767ccd2d29bc990157579e04c84831e71e5c1d513c6

    SHA512

    16f8212c1b0a7933ba6ef55ce76338284485393bd4797d6f6da536eb8b3eacc4dffafa0609cb026c7eadc0f0f7cd792f2cbcd5a5dd996fe63c380406cddbcc80

  • /data/user/0/com.hotspot_watchdc82/app_casual/bsgBaZ.json

    Filesize

    1KB

    MD5

    ecf37163010b9f1ee0503d7027d35184

    SHA1

    f7495368461db44442ebfcbd97bf6e9aa2524db9

    SHA256

    fc577d468f553a45c62982978af785d265b7c188d4d96bc7db62fe9e9c6f150d

    SHA512

    d1e65c43bd0864eda83952114bbd75b409abf946b214c9fdf2a00e4b8ac025cef1b3c3241607155e16fa5ed19b6aebd20f6961e618daa4be6372fd4b3ce2f0a5

  • Anonymous-DexFile@0xc973b000-0xc97be770

    Filesize

    525KB

    MD5

    a97e8a5bfdc50032209115f4102bd9be

    SHA1

    9687f4326da1ded33f2ac49c7c4b84eb23e48fdd

    SHA256

    013b4609bfe03f82fceaa40b12dd670c5ad9f0a1a23b42c3321fa763de2b5c37

    SHA512

    8fb82962999c0f3f7dd326a20e4a452beeba9875d57e3b00b980b862ab58ddc0a30a25daa131f11528476277bed3f6d1748589172ce90d9dffbbdee234d1c261