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Analysis

  • max time kernel
    149s
  • max time network
    157s
  • 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
    12/12/2024, 22:02

General

  • Target

    87537c080fc83533dd1251018f3c9398e23d553d12ad173360d5c90e23ca52a4.apk

  • Size

    3.0MB

  • MD5

    b902e6eb2050769aa1de411f4395e008

  • SHA1

    03f43237468e7324b18e0f3cd78e3f7d6117d6f1

  • SHA256

    87537c080fc83533dd1251018f3c9398e23d553d12ad173360d5c90e23ca52a4

  • SHA512

    5bd9fc658428cf697d1f95976c8ac314e4c9f5c3b5a1394a57ebb40f0b071012b2ab946473614f34b35688ad1cdf1dda5239f7bb1b9d7afea32a2e1f4da6a698

  • SSDEEP

    49152:cuc17q9AXlFCorNoi7rgIIl1E38hchqWrqcvWb+BTgHNRg8jIB7aihmm1HhMt:GxXqoB9608yhjecuO0HNlhcr1BMt

Malware Config

Extracted

Family

ermac

C2

http://154.216.19.93

AES_key

Extracted

Family

hook

C2

http://154.216.19.93

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.xskjlrfapapkaraglzakasd.staretxjk
    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:4248
    • /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.xskjlrfapapkaraglzakasd.staretxjk/app_claim/WsYunp.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.xskjlrfapapkaraglzakasd.staretxjk/app_claim/oat/x86/WsYunp.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4275

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/app_claim/WsYunp.json

    Filesize

    736KB

    MD5

    795397719d1e1bd545fda82b5b9fbfec

    SHA1

    b5252d2899c8e93f33b0ff4b9e510a4a940ad784

    SHA256

    fed69a958cf0bf3b5896c6f92c7cfa4596f0a54085e18b6faf5f40b4a6237395

    SHA512

    e814be54d1b79aaec6c8d083a94c2e22b5baf8ee3bded1cc58c7c4e67232dd43f21cd13a98f89d19cd3f9e7615acb1a2d9327a466025788555a393869e8a1f97

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/app_claim/WsYunp.json

    Filesize

    736KB

    MD5

    dfd48f4a84a0dad508ea5ccfd704ca7f

    SHA1

    90b6a027bbe702ce0e26adbe507889165bb96041

    SHA256

    afd9a023668cd29adea5c60646f5fea0d3b31afca301f5ded8cc9aea1d1d1c1e

    SHA512

    9250bdd92c8917620ae0601ca3a1d12b0a9893dfb00f096e4e1775af76593f9327da35e30976715482cdb897d7d543d6dfd275c3001f61a648108db0bb356d48

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/app_claim/oat/WsYunp.json.cur.prof

    Filesize

    2KB

    MD5

    21fe0857ddd1fc5dfa0fcad2d47bbcc1

    SHA1

    b70dc6c72f086109f79e66e8a19fcf3380e44bac

    SHA256

    a828ab00c8a335ff6a38430cdd0d8eb1f13f0ec6f3e65a4ad1dc190f09d1f192

    SHA512

    6182413f1ea5796af4eecc4e4b143734f88849461fd8ae68e829a21f62feb879659de9cd9d57924d9ceaa7771d2b4b8637dbcebdb7c8e0d26157164fe23beb98

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/app_claim/oat/WsYunp.json.cur.prof

    Filesize

    2KB

    MD5

    7f8ea9d7a5f692d7159704b9910928c5

    SHA1

    4ee725f94f029de95f8d25a30d34eb3df4322f86

    SHA256

    07baecf919962a7acf747bc55687cb3ff8feb354d3ca3feb133e151750232fb4

    SHA512

    0e515b77d530c2e883ac44ce6716752817793ae6528ac9a007284fed9c803221300c3585631083ae07834b4a0a6b297b4da5ae0ef2c54ec745fb1c5c01ec31a2

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/no_backup/androidx.work.workdb

    Filesize

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/no_backup/androidx.work.workdb-journal

    Filesize

    512B

    MD5

    ca88ac57b9b4f040567d86fa5442dc0f

    SHA1

    2fb78ab08c2a8ef2892893d748fa8ececdda589a

    SHA256

    4a35375ee3e0b758fc5b0c00e8b386b4aba4635b552b031ec3f52c1734f97b85

    SHA512

    c74d03f3d9c31016092a5ca48848398647ff899d9bbc694730a65e535d6b9a6627e765850ac192c48eb720af8bfd338d137a3a3b7541b73c426fd3b5a533373c

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/no_backup/androidx.work.workdb-shm

    Filesize

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/no_backup/androidx.work.workdb-wal

    Filesize

    108KB

    MD5

    7d4c04a15c7054ccc51b7fa78cc9afe9

    SHA1

    6808d7bd7f09cad1aa053f6e57e67ad155356109

    SHA256

    14a16a9c359c68c7f291a7fb1a008ede3e99422220d59cc8b0939c3a62b2723f

    SHA512

    bae0a5253625715ba3e2f1dbcf00b5da5dd0118f4f1d917b162a3acd96203d2f5182e1ea591986ed6ac89b21354e82340694ae5130037340aba8c4ac7e183703

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/no_backup/androidx.work.workdb-wal

    Filesize

    173KB

    MD5

    13f410d7af3681a1d385396d1a235317

    SHA1

    3ec994589e473dfdb0a3657e1dd9b3a4e7f3f05d

    SHA256

    78df5b9d9b7871df303fe9fad52172822debd842a65a8f2903a7118d292dd7ce

    SHA512

    99788b9ccc7b6400708db8539f64f9c9a9bdf317f5663cbf826297a7d94e7196ca033e76befe8d2a0ed5680f67501f434dc8211d65086f159e7644ce7f727d6d

  • /data/data/com.xskjlrfapapkaraglzakasd.staretxjk/no_backup/androidx.work.workdb-wal

    Filesize

    16KB

    MD5

    2ebcb69d7b27e69822ae3b51230600ca

    SHA1

    d11b67222bd8a46ccf796a7cb34d5c10dcd4d0e3

    SHA256

    520e6f77a704b3d07aef86dd530d38e0ce6b4f25414c6f11a60e4cf70c2a05f2

    SHA512

    6407fc11122331840991ee23c699fab1f2357f8953991ac4001c1d4933de596b35a256f9533daacc56447818576deaa5dda5a794f1324e99e540522dc92926d9

  • /data/user/0/com.xskjlrfapapkaraglzakasd.staretxjk/app_claim/WsYunp.json

    Filesize

    1.7MB

    MD5

    d5af1f4c1e4fdc647f05ff82e81a0d63

    SHA1

    e2b3d20613170c37ed33d09075b85a77d6ca94a3

    SHA256

    dbf1787aecf19d4c08af8dd7fd631f1252fab194c25a4efd376a3dd6a715bd64

    SHA512

    f1450c99d9a1a547571d15f4498fdf8dc0a537af823718f61b8dd5cc10f2919819f8c0684845da1b134f7a9f8a263cf4a78afe095066e9acaa19724f19e878e1

  • /data/user/0/com.xskjlrfapapkaraglzakasd.staretxjk/app_claim/WsYunp.json

    Filesize

    1.7MB

    MD5

    ffcaa9e688b50ccf1b005883919c9c74

    SHA1

    185fad91d59541ab6f803f597a6211e175bdf954

    SHA256

    d60b15bd863a547743f5862075f3bfc4faab3588775ccf345b40ac8f0f6ce767

    SHA512

    9666de529f3fe843c252c489662bac2f54270dcbc10705abcfd68f808e124f7fa58fcd7509f574df56420f5227c2d132dacf41ba1b4e8efe05373c4f21ff2299