Analysis

  • max time kernel
    145s
  • max time network
    151s
  • 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
    21/03/2025, 22:25

General

  • Target

    cfd7495d787e33920fda854b8fd008e05e428fdcdaab76575ed932189b95e13e.apk

  • Size

    4.8MB

  • MD5

    97a74ac186fd3327a7a5c141430e756b

  • SHA1

    4c50de2ad383c5d1530330221cc420c5b6485f17

  • SHA256

    cfd7495d787e33920fda854b8fd008e05e428fdcdaab76575ed932189b95e13e

  • SHA512

    2d362df7c37fc13ffcb40e21992629bdee80b55010f071819e4cc0e616deeb3f3945a4deb5d5f9c5e54aed9fab4eecff0e4c07e6c4613bf2e6a31a042e9ddea5

  • SSDEEP

    98304:sqt56Zw/boLHyn0DmjFOOWLJGLIxbEBow9Jov62l8f/NvP6U9GBta:3t0qziyhj2nxGowPovr8flvP6Nta

Malware Config

Extracted

Family

ermac

C2

http://5.42.67.88

AES_key

Extracted

Family

hook

C2

http://5.42.67.88

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 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.

  • 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
  • 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.tencent.mm
    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
    • Queries information about the current Wi-Fi connection
    • Queries the mobile country code (MCC)
    • 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:4211
    • /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.tencent.mm/app_DynamicOptDex/eBayDMY.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.tencent.mm/app_DynamicOptDex/oat/x86/eBayDMY.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4237

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • /data/data/com.tencent.mm/app_DynamicOptDex/eBayDMY.json

    Filesize

    2.6MB

    MD5

    f5793fe7eff01c737010b5629219b260

    SHA1

    6f7f34366d09673f8b218fb39a5a6749ca373b32

    SHA256

    9ddb548ef6a77f0caa5ee3645c532f12e5308c73c0ef3a653b841c8fbf6f03ab

    SHA512

    25d8a4b88ca10bb53c8e3ff09d254d70e66da267cf2fef24a7c9b9c8b3297fb3314e87b53bf64c6b928a4bbd3490565bd309925858416d697aace34cffee6ceb

  • /data/data/com.tencent.mm/app_DynamicOptDex/eBayDMY.json

    Filesize

    2.6MB

    MD5

    23b46ec4bda8739c78f7247989653662

    SHA1

    396fa499110c77823022deb12c4f8ef4dda2df09

    SHA256

    0ddc0d87b6901432d4a96beaf0d15e8c69a158b1ad57b14268c424f2d959a445

    SHA512

    818a7636bd9beaca54c7a94fe49e200d2d9cf301ba187525285f29b4bbeeeb210c9dd98fb707d00f7a37e9315a3870cb86adc604a6c6f4baf3d460fb462729e9

  • /data/data/com.tencent.mm/app_DynamicOptDex/oat/eBayDMY.json.cur.prof

    Filesize

    5KB

    MD5

    1315e4f1bd2270f3f35158495174d31e

    SHA1

    282f88237e3d52a92726d31a69168713a3ebbc12

    SHA256

    a7ef0b37013f79d68c4cf15351663c259ad0febbff7cde969961bad8b660663e

    SHA512

    123ca8885d2a2d0238fd3c9faff95c58724fa3c66be47bf4893c9f83931073a21e73612fbc16f6552b99a7b19e2944a7bd3aa38a581ac6b643a3d020b27b73d5

  • /data/data/com.tencent.mm/no_backup/androidx.work.workdb

    Filesize

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

  • /data/data/com.tencent.mm/no_backup/androidx.work.workdb-journal

    Filesize

    512B

    MD5

    a5cb504466dcb97f1a03ee19164893e2

    SHA1

    0af9c4e3a19f0cdce101c2ce050706db173ce793

    SHA256

    2c82da1705ae1268d46820fefce36b3cc7c59c87f53848cc9acca779fe3528c4

    SHA512

    fc9f13b56e2f676b748ebcb9b885df5f165168260c79f24f16f8ce17b2cfff6da66ea5eb797464a71e236b779f22c005c7b5899cc53c7816906b0e8279547ec8

  • /data/data/com.tencent.mm/no_backup/androidx.work.workdb-shm

    Filesize

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

  • /data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal

    Filesize

    108KB

    MD5

    a74304090ddaced5d50d6b176078c37b

    SHA1

    31b3bea1576c734897e9a949ce5da0cfa51d3488

    SHA256

    831875b370b9d8e292b95da467b317e2b6f0d87cd89447e2725d2ade930c0e2f

    SHA512

    355d4e51f3b139a4ab239b7608932984b5c5ddc917fe584a74d0e5f2c90a7a1bcf0c964818385210daa5866205c179a5482c6027a82b742bca3d5b45956c7615

  • /data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal

    Filesize

    173KB

    MD5

    bdf9430c5ab802898d3c721d1c268d13

    SHA1

    e6bead9cb2fd68697e93495d115ec7511f5db0cd

    SHA256

    7b655b0235bed48181e11f6d49808f6765dc3dd1904fb67017ea8c569fb2fd8f

    SHA512

    93813699631944fa638bad4a75b06a3b9ddd984eb9e6607ac117b73ac1d5105ad4b9399ee2fcd758659460f281bf008e9475840a95e1997af7e746185929ac63

  • /data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal

    Filesize

    16KB

    MD5

    c361b314d480b289125982dee2422a11

    SHA1

    5e8d97b034125ed6bb6c88ca03d6fe9a25b5b9bd

    SHA256

    1111a6825eb49096a033c310e18c2ed3c0590e320d6e57f81bed805a7ae27e09

    SHA512

    c41fe4a8a23bcdf1516a7dba4eb58f35e4d9e279ff456b1e07f86d5639be1267c37f3bd8fccd1adea026548126a06870429b9e398ef8b4d3678b855e8af21db4

  • /data/user/0/com.tencent.mm/app_DynamicOptDex/eBayDMY.json

    Filesize

    6.7MB

    MD5

    64b946b8b5b65aeefe3146912b41f208

    SHA1

    c03ba7d82b04c1c71dab25d8a350a4c80f1b6c0a

    SHA256

    c0208ffaed55648345f34f4e5fa72a0f0b40e1148ac75e17400d95966a896881

    SHA512

    6dad8aa41700984a81557760abd3b03c103aff10a2a77f93a1b0ee0f889841e6b950dec6d296b7e9b343c286fc68ed0afadcfd5d92505cd25b74307f7a96e4d3

  • /data/user/0/com.tencent.mm/app_DynamicOptDex/eBayDMY.json

    Filesize

    6.7MB

    MD5

    79ba52989185b39a50e4d81244a7032b

    SHA1

    70c8a24bc94dea95799a8f516326cc0d2b577d55

    SHA256

    6849c00c63eb73b1e1db8ddf0209bbce1bff3adbe640049d49afc0a256609df7

    SHA512

    b0e83ff14f37f8b71941e05e4364e33e61f51b56d527f6c3871bafc978cefff966f2c67db16a765be1998cc76d6c51a6095bcd2eee676503144ae23421f50b4c