Analysis

  • max time kernel
    87s
  • max time network
    131s
  • 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
    04-01-2025 22:06

General

  • Target

    99636071a041eb47ddf2643f7679aa15dca390bf6a74576c009b291fed89e93c.apk

  • Size

    1.5MB

  • MD5

    bec12b71796dc3ad130c410f58f5d299

  • SHA1

    2edd55a52c512ca686fac7d82747be9c4469167c

  • SHA256

    99636071a041eb47ddf2643f7679aa15dca390bf6a74576c009b291fed89e93c

  • SHA512

    16ae0278fd1158ddcec46b49b3630689a46bddc010963abbc36cb4609cbfee1a58c77731e1fb6f7992c19b3ab5b6187d1c8ebf885b67f05ee4847b905d87bd55

  • SSDEEP

    49152:vsVXZMN6ZOilFsDbVN9uFPZIlfLVsem5WhLfsZu:vaXicImuH9KulfLuems2U

Malware Config

Extracted

Family

cerberus

C2

http://94.250.253.26

Signatures

  • Cerberus

    An Android banker that is being rented to actors beginning in 2019.

  • Cerberus family
  • Removes its main activity from the application launcher 1 TTPs 2 IoCs
  • 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 3 IoCs

    Retrieves information displayed on the phone screen using AccessibilityService.

  • Queries the phone number (MSISDN for GSM devices) 1 TTPs
  • Performs UI accessibility actions on behalf of the user 1 TTPs 4 IoCs

    Application may abuse the accessibility service to prevent their removal.

  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
  • Requests changing the default SMS application. 2 TTPs 1 IoCs
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
  • Listens for changes in the sensor environment (might be used to detect emulation) 1 TTPs 1 IoCs
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
  • Checks CPU information 2 TTPs 1 IoCs
  • Checks memory information 2 TTPs 1 IoCs

Processes

  • com.bicycle.tortoise
    1⤵
    • Removes its main activity from the application launcher
    • Loads dropped Dex/Jar
    • Makes use of the framework's Accessibility service
    • Performs UI accessibility actions on behalf of the user
    • Queries the mobile country code (MCC)
    • Requests changing the default SMS application.
    • Requests disabling of battery optimizations (often used to enable hiding in the background).
    • Listens for changes in the sensor environment (might be used to detect emulation)
    • Registers a broadcast receiver at runtime (usually for listening for system events)
    • Checks CPU information
    • Checks memory information
    PID:4318
    • /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.bicycle.tortoise/app_DynamicOptDex/nB.json --output-vdex-fd=42 --oat-fd=43 --oat-location=/data/user/0/com.bicycle.tortoise/app_DynamicOptDex/oat/x86/nB.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4343

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • /data/data/com.bicycle.tortoise/app_DynamicOptDex/nB.json

    Filesize

    35KB

    MD5

    3369fdcbb816556d2fa130f250679ccc

    SHA1

    f7a7f2b44943e0fb01b0a74d04bb2ad982d1dd09

    SHA256

    c315364707f42db525a38f93843644a4b66d762520a0e6710a2acb02214f17f7

    SHA512

    ecb09df174dafed1d72e2c200d09b7feb36eea1d57a8364c277858f859c6ceb43b1ef2f0b8897445efc73b06a69703c95c1d24333ba8393630a94f24043b92cc

  • /data/data/com.bicycle.tortoise/app_DynamicOptDex/nB.json

    Filesize

    35KB

    MD5

    fa21280f4f07e6a5412fd674d5fae8d7

    SHA1

    d2104a59c8acb97fbc36afdea57b75820a0fc8da

    SHA256

    04fd70e578d8028854021b7bee1051ace236ec353c47a786a7f57d9e9597d0df

    SHA512

    401784a1b6b1f225b666c9471ea90b819e51cc3c5246b9e06b5d8e8303cc2a56be15a4da046d94adeb822ab88a6df87731597b40093fa15db1b4436c28746346

  • /data/data/com.bicycle.tortoise/app_DynamicOptDex/oat/nB.json.cur.prof

    Filesize

    237B

    MD5

    08a196a4e2911bf5de082980dec8aead

    SHA1

    9819a986a6153626de516d0b747ac998cb765695

    SHA256

    f3e1772822201bb62136196ee88676cb123256f5a5474132d4bfcbc3dd74a182

    SHA512

    4f26d5eb4d3131e966776000d263b15da36fb5812bee9606cbeb547bc25d64956ab65f80a67a528c9113cf7a48f9c123eaadbf631e4eaef527f409c1aa10323c

  • /data/user/0/com.bicycle.tortoise/app_DynamicOptDex/nB.json

    Filesize

    77KB

    MD5

    9dfa580aa93694ae97b83ecb5cfa9ff5

    SHA1

    b17c51cbd1dad8b069e2ac3adab7fccfd6bd624f

    SHA256

    caaa953fc8d5eb5d2cbac6e280ed76c7e3ddaa2f0f4eb2ed5e7d58b7b7015ddf

    SHA512

    22c51103d9bdf7997ccb6557c92613f431b9c643a1825d4264fd4767a0f1f8e66b8f2719ccbcda1bf5aae2c9448729212e722b6d9091a4f1c7eb6cb6bdb034fb

  • /data/user/0/com.bicycle.tortoise/app_DynamicOptDex/nB.json

    Filesize

    77KB

    MD5

    fbfec32963eec74794d898179aee8b56

    SHA1

    cc98bdf6e6fc12d7fb8ec6caf36d7b0cb35f7ca6

    SHA256

    d15f4935437ed4422d98c2c68a1d352a781300349596adba217d9b2b94e2eca9

    SHA512

    f846a87654034a0e00044859e354598e244d4d52c0af1bc9240b143c566919c0aa108baaeb9bf24e8c030f973b1202c417e82d72db7b0b045ba2371fdc5c1bfe