Overview

overview

10

Static

static

6

c37196d467...57.apk

android-9-x86

10

c37196d467...57.apk

android-10-x64

10

c37196d467...57.apk

android-11-x64

10

Analysis

  • max time kernel
    150s
  • 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
    20-10-2024 22:12

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General

  • Target

    c37196d4675cf0740828d2ff35803222f545918fcce9067bf513518d7822b557.apk

  • Size

    2.9MB

  • MD5

    1ddf4a7348f0d3a70aec759c57de1248

  • SHA1

    281673404c7ae7526a355feaca354458fc7f3b07

  • SHA256

    c37196d4675cf0740828d2ff35803222f545918fcce9067bf513518d7822b557

  • SHA512

    2fbd4e49c8bddd0a643e7fef45cb8a2434506374315d651c6e19cf9aabcfedfcfbf29afe958ec1fc776ee499b2502ed5230592542da14153e23578dbc73b8d3d

  • SSDEEP

    49152:U++++lXPmZbVeAMTY2fvdAFXuH+ht9Yg8DjngKYTya1JCFHnrNUlO0tHUncfOOX7:U++++lX+5kXfv+F++t9AjnITyiCnrylz

Score
10/10
ermachookbankercollectioncredential_accessdiscoveryevasionexecutionimpactinfostealerpersistencerattrojan

Malware Config

Extracted

Family

ermac

C2

http://91.215.85.37:3434

AES_key

Extracted

Family

hook

C2

http://91.215.85.37:3434

AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

    bankertrojaninfostealerermac
  • Ermac2 payload 2 IoCs
  • Hook

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

    rattrojaninfostealerhook
  • Loads dropped Dex/Jar 1 TTPs 2 IoCs

    Runs executable file dropped to the device during analysis.

    evasion
  • Makes use of the framework's Accessibility service 4 TTPs 3 IoCs

    Retrieves information displayed on the phone screen using AccessibilityService.

    collectionevasioncredential_access
  • 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.

    discovery
  • Queries the phone number (MSISDN for GSM devices) 1 TTPs
    discovery
  • 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.

    evasionpersistence
  • 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.

    discovery
  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
    discovery
  • Reads information about phone network operator. 1 TTPs
    discovery
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
    persistence
  • 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.

    executionpersistence
  • Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
    impact
  • Checks CPU information 2 TTPs 1 IoCs
  • Checks memory information 2 TTPs 1 IoCs

Processes

  • com.yiyukeyahixu.tuji
    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:4362
    • /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.yiyukeyahixu.tuji/app_DynamicOptDex/jnMlIJI.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.yiyukeyahixu.tuji/app_DynamicOptDex/oat/x86/jnMlIJI.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4430

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

1
T1603

Persistence

Event Triggered Execution

1
T1624

Broadcast Receivers

1
T1624.001

Foreground Persistence

1
T1541

Scheduled Task/Job

1
T1603

Privilege Escalation

Defense Evasion

Download New Code at Runtime

1
T1407

Foreground Persistence

1
T1541

Input Injection

1
T1516

Virtualization/Sandbox Evasion

2
T1633

System Checks

2
T1633.001

Credential Access

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Discovery

Process Discovery

1
T1424

System Information Discovery

2
T1426

System Network Configuration Discovery

3
T1422

System Network Connections Discovery

1
T1421

Lateral Movement

Collection

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Screen Capture

1
T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

1
T1471

Input Injection

1
T1516

Replay Monitor

Loading Replay Monitor...

Downloads

  • /data/data/com.yiyukeyahixu.tuji/app_DynamicOptDex/jnMlIJI.json
    Filesize

    674KB

    MD5

    75b09d6b73cef56004ff89c7cbb58b43

    SHA1

    e6fbed764b1b829441b62e3e6780de626c119be8

    SHA256

    ea64714411b400aa469fa3d06e1efc6cf1e50bd8bac25e6825af34fa8a767271

    SHA512

    0ea2233e911925438e06a27681ee1e1abb8e2eef20f4563084f7ed0fa0e498f8b2c402d773a2012fc21f5782fd1ce21b87db046a2062b0aea066f19eb20130d1

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/app_DynamicOptDex/jnMlIJI.json
    Filesize

    674KB

    MD5

    c48b7cb8f1d224aa08c665dcb0255991

    SHA1

    5579a6c0eaf97b6cd5b85979ee44d256a9a7694c

    SHA256

    7f2c04b0a2b990475a2c0a52a2c6a25794637dea72b0497ad749d227d25d0101

    SHA512

    f360625ce199943654cd906cc2144963837f4a5ba89bc212afb861f6215e3ee913e72ce09c4540aa7846d9eb4732f1f864eb776eb71a036a71766cfe1413d1a5

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/app_DynamicOptDex/oat/jnMlIJI.json.cur.prof
    Filesize

    3KB

    MD5

    99d2add89a9a6fe79172f6b6499a176d

    SHA1

    7e6cfe61552ef747acdec4685042ea1dfebbb7e1

    SHA256

    fcefc537bc6156fa4618f9ed9bf34e22110499e3cde0a48111961bdfc94ce3a6

    SHA512

    245662c80a97d02755fc6b286b2f89f11a7f6e3cc76dbe1374f01478dc81b7a6be61bba693fe3d053b2eee3d2aa9639857703cd5719e5d909bd4634304e8d84e

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/app_DynamicOptDex/oat/jnMlIJI.json.cur.prof
    Filesize

    3KB

    MD5

    51a2ef4d65e57c8d78cac95fe34b732b

    SHA1

    9d2d1174117b6bd3400cc6afd4829f916e66d9cd

    SHA256

    b84e6dfcea921c2a0b09e250034e409eac9ed4d879337aef92ca075ac8d89e46

    SHA512

    6394db6c4a77c0022e0e3e48988ed77e2372ebc8d9b47d5ff6849765c2a6d75843f492898415233908a7a593f4c62fc03c2aaeb86213aaef5970bbb388a56e15

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/no_backup/androidx.work.workdb
    Filesize

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/no_backup/androidx.work.workdb-journal
    Filesize

    512B

    MD5

    6e850cc5a13b29cddb2db6257fb759da

    SHA1

    7f1543ee58c306f6c5e7569a05e7a98baddd0df5

    SHA256

    215ece83a3a9f57e6a49d37583ce8031ff69ee65456884c828da5e6ee911fa8b

    SHA512

    cc3c1f26c621fddf4134b94a1c0660234f415c19a8359f388d1e4218be7a836947304fa0907b32cb01a30254c9f0969aec19ef40f43368fa9a948f4172100075

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/no_backup/androidx.work.workdb-shm
    Filesize

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/no_backup/androidx.work.workdb-wal
    Filesize

    108KB

    MD5

    de6c2fcaba5351e451b3786515d24585

    SHA1

    70cbad81623072ec9ae47dbd749ed5ca1dceb87d

    SHA256

    90cd5504271bc9fa36300df0119812c1f8f910ba2edd6082260bde5e54acb60c

    SHA512

    57b449ac1f822fb0ff44167e38e218ec214c12d701414b90d8b0febae52d08fbdf1e306c868cea016ecc6e2bf253ecadb6e3b1f3673b95e7f609ded76aad4a0f

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/no_backup/androidx.work.workdb-wal
    Filesize

    173KB

    MD5

    dd48dc5297339804baeab18f2add3cc1

    SHA1

    dbe21de259e3923e36b0c67c5dc7a333325ad37d

    SHA256

    4c0ab45b40f7dab1e660eb68a63d496fdb3dd9b2e09a82f9868e8939b7548578

    SHA512

    e0e9a958600e86eb6c3d6aa7613a88a88ae9b952ac82850aa31a78211c6199e07abeadebc7d2c142c216211a40a0fc9e15a6f8f56e5a9b92f9e52c8bdf57f019

    Download Submit

  • /data/data/com.yiyukeyahixu.tuji/no_backup/androidx.work.workdb-wal
    Filesize

    16KB

    MD5

    92f97427ae7d3a2b6e5c79073380c8c3

    SHA1

    cb5a9e72d0e00ec316ade920fd57e4d016f5aa4a

    SHA256

    2a1c68057f172fbbb4bbaf1c7776f59b2706aac3390fc997252768fa4ca8b39c

    SHA512

    f76cf1a09be84b2ceb3184400329863367f57a88e1261b10bc29ac69c00cf9a9f0a053fae8edd994ddd123f5d770556129569e7b346f9b960e7095b5fe82ca90

    Download Submit

  • /data/user/0/com.yiyukeyahixu.tuji/app_DynamicOptDex/jnMlIJI.json
    Filesize

    1.5MB

    MD5

    43df747c78d862728ecd932d5c361d84

    SHA1

    b09ed032012ca9fb5b3b0801fc5895fbcb57440b

    SHA256

    ddbd30e98aaefe796ea96fc2486bb0f8f882fb5f37c88bd4d20fa29b056310ac

    SHA512

    3e3e55f9f4acf9260d853896cb6cca22553889c38e49cf77f82a57ff1d5111d0c1ae948986e186e73023ad023a7d99abaf1ff99d8b5075ea13918d885e1006b1

    Download Submit

  • /data/user/0/com.yiyukeyahixu.tuji/app_DynamicOptDex/jnMlIJI.json
    Filesize

    1.5MB

    MD5

    fd71ac57aea1d7640599fe2a7dc1e18e

    SHA1

    c7e802dea51a0e8526d79d431ea87d348bec65fa

    SHA256

    0292cc94a29562b337629fb0c9428fc3e49d21105b2d8f2df77c8d45f8ce8808

    SHA512

    ecaa7050cd81973eda6120b9a8e535139dc417acac4f083e960050734bde2e195e61b25b38187ff7be0b09876d2063df26ed5010a457334360333e71126d0ab6

    Download Submit