Analysis

  • max time kernel
    147s
  • max time network
    153s
  • 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
    18-12-2024 22:04

General

  • Target

    a3a7ac72f6c84995cc013c4e9b55470d405ca5484c2d511cbde3dd689fb0d176.apk

  • Size

    3.1MB

  • MD5

    ce9e6ccdae01bbfe906ceeea7637df66

  • SHA1

    9b2f30ddc97260a1fea8a83227f6722967d0a0cc

  • SHA256

    a3a7ac72f6c84995cc013c4e9b55470d405ca5484c2d511cbde3dd689fb0d176

  • SHA512

    880e719ce476f1033ff6cc0b9b746690d8bfc371dda0dead2ede1c6de96691663219afc06ba2770eec824f4f8bfe696f449bbec3db80589c768a532e6f6a656a

  • SSDEEP

    98304:s3lPxBolaf0UcNbydyEZqP0kJBxWNuiArhZe:s3wEZyrjJhZe

Malware Config

Extracted

Family

ermac

C2

http://154.216.20.102

AES_key

Extracted

Family

hook

C2

http://154.216.20.102

AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

  • Ermac family
  • Ermac2 payload 2 IoCs
  • Hook

    Hook is an Android malware that is based on Ermac with RAT capabilities.

  • Hook family
  • 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 a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
  • Queries information about running processes on the device 1 TTPs 1 IoCs

    Application may abuse the framework's APIs to collect information about running processes on the device.

  • 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.

  • Performs UI accessibility actions on behalf of the user 1 TTPs 5 IoCs

    Application may abuse the accessibility service to prevent their removal.

  • Queries information about the current Wi-Fi connection 1 TTPs 1 IoCs

    Application may abuse the framework's APIs to collect information about the current Wi-Fi connection.

  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
  • Reads information about phone network operator. 1 TTPs
  • Requests accessing notifications (often used to intercept notifications before users become aware). 1 TTPs 1 IoCs
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
  • 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
  • Checks CPU information 2 TTPs 1 IoCs
  • Checks memory information 2 TTPs 1 IoCs

Processes

  • com.ameliami.kuri
    1⤵
    • Loads dropped Dex/Jar
    • Makes use of the framework's Accessibility service
    • Queries information about running processes on the device
    • Acquires the wake lock
    • Makes use of the framework's foreground persistence service
    • Performs UI accessibility actions on behalf of the user
    • Queries information about the current Wi-Fi connection
    • Queries the mobile country code (MCC)
    • Requests accessing notifications (often used to intercept notifications before users become aware).
    • Registers a broadcast receiver at runtime (usually for listening for system events)
    • Schedules tasks to execute at a specified time
    • Uses Crypto APIs (Might try to encrypt user data)
    • Checks CPU information
    • Checks memory information
    PID:4260
    • /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.ameliami.kuri/app_waste/aYFQOds.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.ameliami.kuri/app_waste/oat/x86/aYFQOds.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4285

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • /data/data/com.ameliami.kuri/app_waste/aYFQOds.json

    Filesize

    735KB

    MD5

    da8dd007ff8679c6f76791e3770d4387

    SHA1

    afa0f7c78b9d4ac3d7c368486f3d6d9bf65b1cd0

    SHA256

    e3d50f891c6d30c697e9f8d2141e5c90116afe2bd0d8e804a439c3eed09d9e6c

    SHA512

    b22dc223631e5e25469b95a657059fe2a14107e769fc6428f4265fe02b33720f75ad4aa8642afd8d051ad0040c47769b62c4900491a6dbef33017e758fde86ad

  • /data/data/com.ameliami.kuri/app_waste/aYFQOds.json

    Filesize

    735KB

    MD5

    7d26bf9639dbb6f272646d94780cc967

    SHA1

    a296000f94e8d0c1078e3d13b6ddc4b79ee4ab73

    SHA256

    05936241b83ba312861ce30b0e37d0d2b3139efc6a3e3e9b5f53e35b2c7c89db

    SHA512

    36a8565d3f86a6b3f9a21d2a88e397faa294746b190181d9270aeae7b0ff1e12943770c722dffeedc0a0f351402239d8ece8249280283d4bac8011612f63d459

  • /data/data/com.ameliami.kuri/app_waste/oat/aYFQOds.json.cur.prof

    Filesize

    3KB

    MD5

    714057c9febab4cacf51885e4cacc99c

    SHA1

    d5f8d090252aadd0463e19fe68fa4f70b4267ce7

    SHA256

    b6f6e217220502df2b8dab4787bdc417877e084311671887b461cfd5f21611d1

    SHA512

    7fbcc7dd5e6a11c6e9e83bcf587d65eb627b7977ea30dc849dd1d2c116383179660cda39896c6d21ce3628f782453c996f607934c158587b06c4b210f135cc28

  • /data/data/com.ameliami.kuri/no_backup/androidx.work.workdb

    Filesize

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

  • /data/data/com.ameliami.kuri/no_backup/androidx.work.workdb-journal

    Filesize

    512B

    MD5

    293fbd37b965a888a7e5107e78b6af88

    SHA1

    e8ecb3fec75213079d226a846d8603a88eb2f039

    SHA256

    826d4b9a06372e45f889ccd810f559e1da0c2f438af939f2aa4bf043687b5c6d

    SHA512

    a6b95285c060273fd2cf7283adb083113abb5eb71950404f8618dd0132a07eab1cb0e8a56a944df23effd794d41e556ad10f205780a852c622083854b8bc7e10

  • /data/data/com.ameliami.kuri/no_backup/androidx.work.workdb-shm

    Filesize

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

  • /data/data/com.ameliami.kuri/no_backup/androidx.work.workdb-wal

    Filesize

    108KB

    MD5

    e2d5443dc085ce1305d9876ff958a363

    SHA1

    ac72559b3d9a010e9259d34b25f78964e5b2c6e6

    SHA256

    7c933c41bfa8503b50021504c0eab5f27c72a025fb253922401cd74781886a4d

    SHA512

    4b1d61f8b5ef65036f651c3cedd9e6a10ff0e4fe7b50f3902762c1f9eac56f75b6cfd17e675d7d81f6070d9baaab064b993325e78a71ad2410636fc12fab1bdd

  • /data/data/com.ameliami.kuri/no_backup/androidx.work.workdb-wal

    Filesize

    173KB

    MD5

    a8261cadfab7b905469522506c5de1fd

    SHA1

    01f64d960540b73e05ff1e03ff328b0c594f5970

    SHA256

    4d693e4e826cdb0180134911b4065a456dcac1581a152bca0ac9633387654e81

    SHA512

    610bdb48117ebb7e6671864ca27065adb8c805301da3732106a8f1ac70ac5b670fb8fb9b6065967dfff723487e61b325118d6b877e9633d046731d466335219f

  • /data/data/com.ameliami.kuri/no_backup/androidx.work.workdb-wal

    Filesize

    16KB

    MD5

    c95e7fecd6234d1cceea2d2013733622

    SHA1

    4273cd6921091bf6a01c449e5eee0b70c1487bb1

    SHA256

    9140593eb775fa55a8fad505d44b3e9297ffb5a9fd77bd35835ddaeb785ee869

    SHA512

    65e1867a9a63b392ed87c8b3ed4443d57575bc7ca5338fffe7e84f4e20c1eac1accd91ef12d494c49d34d760d8f59da27d2bc014c5d30e02750c37f21fe0c910

  • /data/user/0/com.ameliami.kuri/app_waste/aYFQOds.json

    Filesize

    1.7MB

    MD5

    b588406bb52e1bbe63faed6e89652b1a

    SHA1

    70568e247c89bff614685fc7431ff14a1e548570

    SHA256

    ed95ca85cc00df4c5da7a0ad9b5f2c46c0fcce7c25814bede8173c10ec8cb29d

    SHA512

    0a4f2d85bd6de5b69435c4dc4e8124e806e246d8e1080fd34b8665f2c70d2e8ff8132bbf129959aa5146a686f9442296c569a29c358ee0bd6c25e7b6bc176330

  • /data/user/0/com.ameliami.kuri/app_waste/aYFQOds.json

    Filesize

    1.7MB

    MD5

    a6ed08358a93a224a3f8810e4734388d

    SHA1

    9f2bc2746061857531303c9fa5888939aff7453a

    SHA256

    14c0adb7693f3addd612684186c80035724ab1c41d0266c445c44e771c8ae6df

    SHA512

    daa6f21899432071a8b73e04535338c6ee25450f04f98db59fa28d31738e7e6308949df948795bbd024ba4244588937831d50360734755b9a3abc03585fdf87d