Overview

overview

10

Static

static

6

bf3ffeb170...29.apk

android-9-x86

10

bf3ffeb170...29.apk

android-10-x64

10

bf3ffeb170...29.apk

android-11-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    159s
  • 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
    30-08-2024 22:04

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General

  • Target

    bf3ffeb17088835da1b143a9d5ab3c12beab6343420596d2413b1f3153283329.apk

  • Size

    3.8MB

  • MD5

    835fd67ff29ceffd40e69cec1a9387a0

  • SHA1

    6ef78912b3e0b4d4fe5262191313a70a09cd13f9

  • SHA256

    bf3ffeb17088835da1b143a9d5ab3c12beab6343420596d2413b1f3153283329

  • SHA512

    be990e536fb163061a4e8c2ccc2dd28a7f32b33a06ad8d109b8f65d3a8359c0e9e22b48dfd438464662224608e08832c20cae664269e20c731df63cdaef18dc3

  • SSDEEP

    98304:MRr6FQVSCyhyqbZ4kpV1B1qmZcA8YS95ZAMw4Wxuoa+719YGssi:MyCSCyMqbZ4mV1X76f95ZS4WEUjRssi

Score
10/10
ermacbankercollectioncredential_accessdiscoveryevasionimpactinfostealerpersistencestealthtrojan

Malware Config

Extracted

Family

ermac

C2

http://91.92.255.65:3434

DES_key
AES_key
AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

    bankertrojaninfostealerermac
  • 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 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 13 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
  • 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.ueonkgnhp.gicztgizn
    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:4263
    • /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.ueonkgnhp.gicztgizn/app_dex/classes.dex --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.ueonkgnhp.gicztgizn/app_dex/oat/x86/classes.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4288

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

System Information Discovery

2
T1426

System Network Configuration Discovery

3
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.ueonkgnhp.gicztgizn/app_dex/classes.dex
    Filesize

    942KB

    MD5

    b7a63af6e3c017d27832376d90c10b66

    SHA1

    8f9f938c33c99c3ad1b3d65285ebd921b1e84322

    SHA256

    86eda2ac571ab87788d8730419fea24962549d211b1ef3e4130affdc1f5d84b8

    SHA512

    6f4c4cd636f7d50178356dff1a3004b52180709cb68ca05e1d6c3ef3448735c1f1dab4e1f062529407a06de07e3212e51f561f75be91412a94e78930f0726794

    Download Submit

  • /data/data/com.ueonkgnhp.gicztgizn/cache/classes.dex
    Filesize

    455KB

    MD5

    8ca85e1253b6a3ab98c04a5e4d447cc0

    SHA1

    620be83840be9b585afad290e1ee66f7f706c107

    SHA256

    51214d5b0f78e20fa0ed2652be0823b4750c9a39b07d46d79296a25ebc946fff

    SHA512

    b258f441089aba453f9c102265400d30a53e38ba8b82ad131e7f1626a62783836e34154b9cbe17d509cc74a461a76fe2c3fbffa15e8780dd7e8f5e4b57a2eaa9

    Download Submit

  • /data/data/com.ueonkgnhp.gicztgizn/cache/classes.zip
    Filesize

    456KB

    MD5

    25a2e3d558b429d673ba369fe74042b8

    SHA1

    37570dd23f266f54a28184b35489e1fe0cc714db

    SHA256

    59b9bc6a0432c7b85e13490f5b66e2bfde31437a11dd891dbaaf1733e65726cd

    SHA512

    cb6d6814534b2afba5c6ccab239c0cf84311a731f7596129720de03f2642490b6b0941a882cce7c55324a0217dcf5f0f69acbbf17f377dfe65e65ec4735e735e

    Download Submit

  • /data/user/0/com.ueonkgnhp.gicztgizn/app_dex/classes.dex
    Filesize

    942KB

    MD5

    77b84684e63851f40629f7495fcfe73d

    SHA1

    ed2b10768eca8f7d69cfb21a6e6b11a437997465

    SHA256

    ff35cdd5e7ca4532ea152fda8172d9c5f1977ea34a95ae844b708702ec3a7796

    SHA512

    1d6fe7044ba2db566310acf5829fd4f5deea8f1bcaf2b70d397b7ef1db80003be4a8e6fdc9128911b6784aa61c84d1480269da22c6a416bb72eabd2814a19787

    Download Submit