Analysis

  • max time kernel
    147s
  • max time network
    155s
  • 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
    07-10-2024 22:04

General

  • Target

    3fb8abfe4878d0644588effa1a2fe6fa55caaf3df800fc2dd34a60c82aecc70a.apk

  • Size

    3.4MB

  • MD5

    40ae63de85092c97b7ab5e40733e22e3

  • SHA1

    bb31eef59dbd915d0510f48b73214fd47871e547

  • SHA256

    3fb8abfe4878d0644588effa1a2fe6fa55caaf3df800fc2dd34a60c82aecc70a

  • SHA512

    026ee1c5a35295fc4eba6c8bf3f371ae0ea948727032874b0db5f028d96307f7fd3f14dad5a1d274b5d642a571e7d81a7352951f27a2f177f801c972d10c8fdd

  • SSDEEP

    98304:BTdMGFUcKx8r3NINj9ts99tNitbUDPR2ybP++PhjIo51VFw:ZdZBDrdqfs9MtgjR2ybmqpLw

Malware Config

Extracted

Family

hook

C2

http://85.209.11.193

DES_key
AES_key

Signatures

  • Hook

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

  • 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 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.ehmygokzi.cjbpfdbdj
    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:4264
    • /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.ehmygokzi.cjbpfdbdj/app_dex/classes.dex --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.ehmygokzi.cjbpfdbdj/app_dex/oat/x86/classes.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4290

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • /data/data/com.ehmygokzi.cjbpfdbdj/app_dex/classes.dex

    Filesize

    2.9MB

    MD5

    7df07a8e0ba5aa9ada1285c7226efbee

    SHA1

    d00d6c228a1e33db46e348283897bcc081218c9f

    SHA256

    e172cb64a5bc8d8da5102b02cb4f242e4e42daa735657363a8aed7e26b1436ed

    SHA512

    8828274c08305d4e96f37474ffade446ee271ecc829f092cf0c184fd68ef65c2d2d1a71d730332d6637344a993a8cbbe2a2e3df259071c5b00ebc15084e8a684

  • /data/data/com.ehmygokzi.cjbpfdbdj/cache/classes.dex

    Filesize

    1.0MB

    MD5

    a06a80d3cd1e299ee92a541d8634c67c

    SHA1

    caf3809ee0de695c06b69c7cebc87655b42bb06a

    SHA256

    837111a5f17f0ca1b122c33a16be54130d43d73ac1ce9faa2e65c1f9f133787d

    SHA512

    c330d0b042e00aa00014a06fe42ea121879ea600a803bfd58e3943c06df55bc4444b3f4f59f503b7814137b2ba732a594f22db15c71f3a65e05fd4116621e64e

  • /data/data/com.ehmygokzi.cjbpfdbdj/cache/classes.zip

    Filesize

    1.0MB

    MD5

    6ba0782b490600a3648790c4b4ff16fb

    SHA1

    73f337518576de9c4c46e5f8dfe6681e470ab595

    SHA256

    23e114be70367b63e463223dcf96eab32672bc3c275424cf185b061c6cf2b176

    SHA512

    9fba89d8850f26c2f164f8cd107c38d3db1a63a5b69c610b07ce3b1af543f296109580d8fe3f509f9a0f9fd94e8168a3ba17664e6eb90afa6143dd553bcc790b

  • /data/data/com.ehmygokzi.cjbpfdbdj/no_backup/androidx.work.workdb

    Filesize

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

  • /data/data/com.ehmygokzi.cjbpfdbdj/no_backup/androidx.work.workdb-journal

    Filesize

    512B

    MD5

    a19b997ea7bd22f5065b2b841ad9bff2

    SHA1

    e4e9c3618c1c58666901dbe10b47f4a1e3e3b047

    SHA256

    b5a54f2445f0972344c033cc45dfbab290a1adf0132d46ba20dc4ddfe225e87e

    SHA512

    0c02eb6fe3d17418cd57fee5fb16559f58d3fff199dc3bbcb15f35348c0666ce60bffadf69fd8de303f03e28427fd06a9c88d30097409e9ccac2c20928b746d2

  • /data/data/com.ehmygokzi.cjbpfdbdj/no_backup/androidx.work.workdb-shm

    Filesize

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

  • /data/data/com.ehmygokzi.cjbpfdbdj/no_backup/androidx.work.workdb-wal

    Filesize

    108KB

    MD5

    a42fc0c2aef2a803e5478b82bb9f53ff

    SHA1

    25244a86a07efae3de6d3b9078e23c6b2ebbfe4a

    SHA256

    08f998c85c5b257980e6fc47051c1f2b27b2cfaf3a3a033ad5d0d526507cd708

    SHA512

    388588e2804f078606e6b06286badaea74ccbefaf0c0d8a0acb7090fb89327d5b0a7bcb4663362bbfe1d0ab33dd37907d883498403c33114a765e1a68d788673

  • /data/data/com.ehmygokzi.cjbpfdbdj/no_backup/androidx.work.workdb-wal

    Filesize

    173KB

    MD5

    5a1d9b95433974d209e6ab904606bd81

    SHA1

    c29a5571356775c4350e51ef980f60cb4ca7edc1

    SHA256

    6a7f20dc403923408680f9d226f6309f083b7277860e3ff745b390b1b22f2946

    SHA512

    ffdbf9ab3133d35328ce05cdf1af334786ff0d57f6ddd1b05957e1c3d54aac988e0313a535bd2590aa46a418e2f28c8f3c1dfcdffa100f95a6de3be55f29e81d

  • /data/data/com.ehmygokzi.cjbpfdbdj/no_backup/androidx.work.workdb-wal

    Filesize

    16KB

    MD5

    45f588f8dc22d944953248155471f28c

    SHA1

    36097c606b4f8c44b1c82d6dd1548b5f07a08a53

    SHA256

    b83a6a2da9fb0d6910e0c8f06d2cc6562974349ef37c6c782cfda74dc4720e76

    SHA512

    bf26cd240b0ef86526f9d6b0af122d0f01f380bf8cb94dc0e5c08121e12d60c8b60bf342c08dd790ad8f5311321be611f54dbd43da53396a138cdedd3aa58431

  • /data/user/0/com.ehmygokzi.cjbpfdbdj/app_dex/classes.dex

    Filesize

    2.9MB

    MD5

    2b4be443eaf9ba1a12d2f679907c3cc3

    SHA1

    b9022e94e9444ea8436d60366de9c18428773c7d

    SHA256

    094903c8fca0b6457b741ca7fa0525550ce80536448280e070531443c3280445

    SHA512

    749eedcc868a95aec89f8a5dd1a1da935ac500a1d945daee17eae23ab1ec7f7fce89c34266fb3911fcff4470437a4151503362dd235427ef77fd9afc7f1a8d2d