Overview

overview

10

Static

static

6

9ebea35751...2a.apk

android-9-x86

10

9ebea35751...2a.apk

android-10-x64

10

9ebea35751...2a.apk

android-11-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    154s
  • 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
    29-12-2024 22:00

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General

  • Target

    9ebea357516638a32bd1022b946a561ec848e9de456da210291dc80863577e2a.apk

  • Size

    4.1MB

  • MD5

    e04bfabcc135c8899271fdaf3fb0b3a9

  • SHA1

    97e79aee40b9d4d9b1c5ed153fc585b62d7f0496

  • SHA256

    9ebea357516638a32bd1022b946a561ec848e9de456da210291dc80863577e2a

  • SHA512

    c5ff6515cab103b3b0432ff3effb0117c4ad7f699d1dddf44dc600bb9e81a10ac278c8611a8f78e116aa4a2344bb43d37528275b49a28df28cf99e1107aa1d59

  • SSDEEP

    98304:4WqwE2sbRpJluzDN7Qoq7icd3wgIbZGDsLVgvXMeiCtBzbkIU+jqEWwb:VbE2sbRxuzDN7Qoq+cd3wg8GDsCPMelb

Score
10/10
ermacbankercollectioncredential_accessdiscoveryevasionimpactinfostealerpersistencestealthtrojan

Malware Config

Extracted

Family

ermac

C2

http://154.216.20.225:3434

DES_key
AES_key
AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

    bankertrojaninfostealerermac
  • Ermac family
    ermac
  • Ermac2 payload 2 IoCs
  • Removes its main activity from the application launcher 1 TTPs 1 IoCs
    stealthtrojanevasion
  • Loads dropped Dex/Jar 1 TTPs 3 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 a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
    bankerdiscovery
  • 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
  • Performs UI accessibility actions on behalf of the user 1 TTPs 11 IoCs

    Application may abuse the accessibility service to prevent their removal.

    evasion
  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
    discovery
  • Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
    discovery
  • Reads information about phone network operator. 1 TTPs
    discovery
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
    evasion
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
    persistence
  • 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.cvbqkcjjf.lygyyefyq
    1⤵
    • Removes its main activity from the application launcher
    • Loads dropped Dex/Jar
    • Makes use of the framework's Accessibility service
    • Acquires the wake lock
    • Makes use of the framework's foreground persistence service
    • Performs UI accessibility actions on behalf of the user
    • Queries the mobile country code (MCC)
    • Requests disabling of battery optimizations (often used to enable hiding in the background).
    • Registers a broadcast receiver at runtime (usually for listening for system events)
    • Uses Crypto APIs (Might try to encrypt user data)
    • Checks CPU information
    • Checks memory information
    PID:4213
    • /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.cvbqkcjjf.lygyyefyq/app_dex/classes.dex --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.cvbqkcjjf.lygyyefyq/app_dex/oat/x86/classes.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4240

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

1
T1624

Broadcast Receivers

1
T1624.001

Foreground Persistence

1
T1541

Privilege Escalation

Defense Evasion

Download New Code at Runtime

1
T1407

Foreground Persistence

1
T1541

Hide Artifacts

2
T1628

Suppress Application Icon

1
T1628.001

User Evasion

1
T1628.002

Impair Defenses

1
T1629

Prevent Application Removal

1
T1629.001

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

Software Discovery

1
T1418

Security Software Discovery

1
T1418.001

System Information Discovery

2
T1426

System Network Configuration Discovery

4
T1422

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

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Downloads

  • /data/data/com.cvbqkcjjf.lygyyefyq/app_dex/classes.dex
    Filesize

    900KB

    MD5

    6018833f854da3e5bbadd9987808d4b8

    SHA1

    76551b680e531cb0938635a6406e23e778d86d03

    SHA256

    5909507e829c098d5b2454c13b50fa64cb9a8b934368250580bf501adb481f66

    SHA512

    5f9a5378c474bc3bb1121a87e12d4acb6a0b52527da0cdfdff2a484593925ca9eaa7ab3927c51b912391505aafa065746e7aab39bcc782ab7f0090ecdba51523

    Download Submit

  • /data/data/com.cvbqkcjjf.lygyyefyq/cache/classes.dex
    Filesize

    443KB

    MD5

    6c5cc6e72509c8d4d3156d4c3fa42150

    SHA1

    7df751317c0b356708c2dc62e7ee75d0a48ae7d0

    SHA256

    9d09d3254df4fa091f219fdf1e6ab265b3f787b4ac27df8a89433bbaf9d75f9b

    SHA512

    96db8702f50c06f877bdddfd67bcbcc6a5b6e51c83aa2d860aa7165ff32b056bca062671b18dfa1fb6f9ae21a1c5997e37c07e5183b0d3cf5a64ac3e8b1a395c

    Download Submit

  • /data/data/com.cvbqkcjjf.lygyyefyq/cache/classes.zip
    Filesize

    443KB

    MD5

    62bdc5b660e14534b9aae0780573b227

    SHA1

    38e8251b2944a81b25bfbe8c278daac169b6997a

    SHA256

    03f0b8d3883309b6b1dd10c4c2bb2b1a0b8bc2219ef3a3f8e89f12551f854549

    SHA512

    8fee6921b241197115e21390923ba848fd5d01e1c58af861714693910c463a528a32a466d254cfa68e36f4803848dfb3b1ec76de37ecdff0e5d2519424908a50

    Download Submit

  • /data/user/0/com.cvbqkcjjf.lygyyefyq/app_dex/classes.dex
    Filesize

    900KB

    MD5

    8b96cd2e6cd4ff750512f5b787c98219

    SHA1

    51fdda52e34fb1bffde7fd8617e68c636c042005

    SHA256

    711f41752b2680b8fb5f1656ce8c76e25d6726d8609bb69f498042d0d8071517

    SHA512

    68230ec4e65e018b28b47fc51b9a2c923290dc26a65850de084bdc59e4fd81f447dff5c7b10a985682cd997330ecb983a63936a6b491de30b9d13a4e3c3911bb

    Download Submit