Analysis

  • max time kernel
    21s
  • max time network
    31s
  • platform
    android-9_x86
  • resource
    android-x86-arm-20240910-en
  • resource tags

    arch:armarch:x86image:android-x86-arm-20240910-enlocale:en-usos:android-9-x86system
  • submitted
    01-12-2024 21:51

General

  • Target

    135e417376f55c903a93e171776ef569fc6fa8368be46e2d19dd3f403feff262.apk

  • Size

    7.6MB

  • MD5

    e8f3a59c4a680e8581cdb9e1209a6924

  • SHA1

    2cbea5a429fad8f2d62d5ca0d82ccd08e66d4d3b

  • SHA256

    135e417376f55c903a93e171776ef569fc6fa8368be46e2d19dd3f403feff262

  • SHA512

    96baac8b302f6dacd0c22368226739ffbdf151dbc181a62a04331c323fd1ce91a1860c4cfad9ba45be36a428622b7133daaa208679e88d047ddf39eed615c3c6

  • SSDEEP

    98304:wCow3Pql+eNeuFVKTHgeKj7jRsl75iSRGEvqJoOLDH:5ow3ylFUMrj7jRCrdooOX

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
  • 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.calculator_telephonyr7
    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)
    • 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:4266
    • /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.calculator_telephonyr7/app_gift/NW.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.calculator_telephonyr7/app_gift/oat/x86/NW.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4294

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads

  • /data/data/com.calculator_telephonyr7/.global.com.calculator_telephonyr7

    Filesize

    48B

    MD5

    046a414913add6f5bb60072c7db819b6

    SHA1

    451ee4f6809260aec622d772fd329c7d0297a842

    SHA256

    b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a

    SHA512

    4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

  • /data/data/com.calculator_telephonyr7/app_gift/NW.json

    Filesize

    1021B

    MD5

    0cb98f65b66023c0e11efdb7041bc314

    SHA1

    eb735ce01758288fdeee4a309dc508a17680e920

    SHA256

    82b5a011d7c434231385286f9e717d58fa00f88fcb4fa9b5ef0d69f8c792e9ab

    SHA512

    bdcbe0d5ebbc5e711f34028e0b212ec70d8da391d16a8a3404de3dfce56a6020ef706e083e2b522e9c1a286c5f917483666f190db1acde24fc9d8b61c42dd871

  • /data/data/com.calculator_telephonyr7/app_gift/NW.json

    Filesize

    1021B

    MD5

    24de4d4c6d0c358b05f4f7dce4018234

    SHA1

    665e37bbbf08b444ef84e105ce595b0374125114

    SHA256

    b5ac4882bfd0423c4fbcde92dc3e292d24c24eabec1910b7eb34c2db771384de

    SHA512

    e5de64d3f3179cf8bca7fd9a4b225d985bd63408d0f4b771adc79f6038cae4d10860e014e56165f31bd984e3ca4494240c81d9acb136b1172391876d97dd3d16

  • /data/data/com.calculator_telephonyr7/files/.m

    Filesize

    307KB

    MD5

    4e73947cabb5db3f92ca85004981b754

    SHA1

    6d9667fdb0280ed2dcb782b4683e422a51bdc601

    SHA256

    6db94232e756b90ed437f1bc87dc38cf20fb2e7c7a19a5e40c6c17254b7e234c

    SHA512

    be8b500a7070af1dfb53b0cf1a7b327dadc4e163a6dad905496ac228c58cd1ed87b054533917924455d35e9b300683ae33e1bcdd91935a5dbae1d693c3e13d69

  • /data/user/0/com.calculator_telephonyr7/app_gift/NW.json

    Filesize

    1KB

    MD5

    f5cd800b6da9fb13dad1f89931e50029

    SHA1

    a03d4a094ecd762a540ef134bfa1cae2f9e66c8e

    SHA256

    e5c92b42200dd010076cf6b64f55efea4cf0e56044f165253acf15fa7a1903b9

    SHA512

    810f4299738dc6ab4d4e31323517276f95c438b9404efafd0557f8e3b2984363763b97e9e10bab80dc9daa61fcf4cfed075dc1ab4ae6b66c77b753d70703ca99

  • /data/user/0/com.calculator_telephonyr7/app_gift/NW.json

    Filesize

    1KB

    MD5

    4859cc7298a3e78918e297879eed7482

    SHA1

    6ec75520a3d80fabba89b564aa8f5dbdab94a4c3

    SHA256

    54c46a5a85846b8f7ca7a2a26d5dc634ff3ff88af570e73bd65ee0d869df2a27

    SHA512

    92adbaa420e6007852651bc0169878e2f78107c986de069f91c94f84390248dead278876e063723b48ad96a00ae7750773f8a01494930ab361fc9db68a9b798c

  • Anonymous-DexFile@0xd5378000-0xd53fb9f4

    Filesize

    526KB

    MD5

    b39479b4020eccfc39370b15966c7d9c

    SHA1

    6c9df1bcad179514cf46576e3aeb6cb56d07f0c4

    SHA256

    63ca29d1336fff680915a8f17ff5097c4a7f1f8eaa836fae6ab12c27084f0b1d

    SHA512

    7d1a1f0374ef34615bceac53aba08937a804ed53bfe729703213a0226d5eef5ede9d55a70996dcda5d9216744728087ee4ed5e538269ca989b1de0f4477f8c3b