Overview

overview

10

Static

static

6

b39066b6ef...c9.apk

android-9-x86

10

b39066b6ef...c9.apk

android-10-x64

10

b39066b6ef...c9.apk

android-11-x64

10

Analysis

  • max time kernel
    131s
  • max time network
    161s
  • platform
    android_x64
  • resource
    android-x64-arm64-20240624-en
  • resource tags

    androidarch:armarch:arm64arch:x64arch:x86image:android-x64-arm64-20240624-enlocale:en-usos:android-11-x64system
  • submitted
    14-01-2025 22:01

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General

  • Target

    b39066b6ef956b773733e3441485e2e3a6b412251a33113bf7f29de7f010d3c9.apk

  • Size

    3.9MB

  • MD5

    bd281af4799e607361972e7db41aeb84

  • SHA1

    0fbfd66b84bef8c44f8cc1eb222ce39b40f5e9aa

  • SHA256

    b39066b6ef956b773733e3441485e2e3a6b412251a33113bf7f29de7f010d3c9

  • SHA512

    86f1fe505b00fdb2c8a14addbb98159eb5c980d7a81036c7d017573465eab5a425da25718d4403d0118ad726640021e947044eb5f99155a0b1dad1b3a95da887

  • SSDEEP

    98304:9L2WOfKPr7DNEj05LKba0ySreQY6V4FlX8ExdXRElQaqv:oWOoDNEjoLgCQb4oExlREcv

Score
10/10
ermachookbankercollectioncredential_accessdiscoveryevasionexecutionimpactinfostealerpersistencerattrojan

Malware Config

Extracted

Family

ermac

C2

http://154.216.18.137

AES_key

Extracted

Family

hook

C2

http://154.216.18.137

AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

    bankertrojaninfostealerermac
  • Ermac family
    ermac
  • Ermac2 payload 1 IoCs
  • Hook

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

    rattrojaninfostealerhook
  • Hook family
    hook
  • Loads dropped Dex/Jar 1 TTPs 1 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
  • Obtains sensitive information copied to the device clipboard 2 TTPs 1 IoCs

    Application may abuse the framework's APIs to obtain sensitive information copied to the device clipboard.

    collectioncredential_accessimpact
  • 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 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
  • Performs UI accessibility actions on behalf of the user 1 TTPs 5 IoCs

    Application may abuse the accessibility service to prevent their removal.

    evasion
  • 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
  • Reads information about phone network operator. 1 TTPs
    discovery
  • 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.zkasaslkasata.kuri
    1⤵
    • Loads dropped Dex/Jar
    • Makes use of the framework's Accessibility service
    • Obtains sensitive information copied to the device clipboard
    • 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
    • Schedules tasks to execute at a specified time
    • Uses Crypto APIs (Might try to encrypt user data)
    • Checks CPU information
    • Checks memory information
    PID:4581

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

1
T1603

Persistence

Foreground Persistence

1
T1541

Scheduled Task/Job

1
T1603

Privilege Escalation

Defense Evasion

Download New Code at Runtime

1
T1407

Foreground Persistence

1
T1541

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

Clipboard Data

1
T1414

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Discovery

Process Discovery

1
T1424

Software Discovery

1
T1418

Security Software Discovery

1
T1418.001

System Information Discovery

2
T1426

System Network Configuration Discovery

2
T1422

System Network Connections Discovery

1
T1421

Lateral Movement

Collection

Clipboard Data

1
T1414

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

Data Manipulation

1
T1641

Transmitted Data Manipulation

1
T1641.001

Input Injection

1
T1516

Replay Monitor

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Downloads

  • /data/data/com.zkasaslkasata.kuri/app_exercise/UNq.json
    Filesize

    736KB

    MD5

    5d672c08aad79b225d9e420bf4089408

    SHA1

    8c9d7e9e94c8866dd2df48123ed223c59f615188

    SHA256

    af8d3366a547d8fdabd01b98da0c947b8477aa81f85e3c1672303a3f5064b29e

    SHA512

    c31d09e892ae0a1bf3d1bd903648f773607fe163b8ee386c11e4b5516c68db747f4d7ad91bba17443b446589c4b70db62e1079afca5badbc3f63968dcd8d6c4b

    Download Submit

  • /data/data/com.zkasaslkasata.kuri/app_exercise/UNq.json
    Filesize

    736KB

    MD5

    9aa5cea33b9868b1a19149a4f89be59d

    SHA1

    32b040b6f045c127da1ae04dc33737914cb6e01f

    SHA256

    e1df0b98068001a3532efca304f30e272c9f4661bc62e5ec952b1399ddbd639b

    SHA512

    d81e4943c13ff2bb484b297ac35e2fd20b6fbfd8d49c649c6ffea8574316abf626316a18793e196f2c785bbdd4fd01f11fab828caeae0611247bcbb39d75dc96

    Download Submit

  • /data/data/com.zkasaslkasata.kuri/app_exercise/oat/UNq.json.cur.prof
    Filesize

    2KB

    MD5

    b76beb56946d2c235022edcdbb70edbb

    SHA1

    e75b301cd6e473055207b498dbb1ad3ac5dda298

    SHA256

    0662235037cdc074b7ff288d03265463466b70a68b71d1f7bd2732b83a658e54

    SHA512

    2e7145f9325f428ebd18d335fb7b656e16e76789a4febde4562ada1fda0b2888fd91615a12bfd30d16dba364af30ea40d4187b7518a0a724a8dcbb0a714cd5c2

    Download Submit

  • /data/data/com.zkasaslkasata.kuri/no_backup/androidx.work.workdb
    Filesize

    4KB

    MD5

    7e858c4054eb00fcddc653a04e5cd1c6

    SHA1

    2e056bf31a8d78df136f02a62afeeca77f4faccf

    SHA256

    9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad

    SHA512

    d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

    Download Submit

  • /data/data/com.zkasaslkasata.kuri/no_backup/androidx.work.workdb-journal
    Filesize

    512B

    MD5

    3ad51f842817248bcf70bf08f0a64aa9

    SHA1

    8108507d14495d5be84ceba87779e9bdaeb5da3a

    SHA256

    99950dc49a5b8da2a57a8c50aae6e9fb28d919c4f4437b644823810f1adca1e1

    SHA512

    5f9efe704271d7d3094d80c2d96420cca0832b90b3f72ffd8a7b89704541962b10538eab824073363fc4dd08bfea27db75e376faa6492ab6d7a34ff725741b82

    Download Submit

  • /data/data/com.zkasaslkasata.kuri/no_backup/androidx.work.workdb-shm
    Filesize

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

    Download Submit

  • /data/data/com.zkasaslkasata.kuri/no_backup/androidx.work.workdb-wal
    Filesize

    16KB

    MD5

    c889b819a1bbb66cf92b7746a5959d40

    SHA1

    e9ae8d26bef6de883e23cab6085aea1ef51ac932

    SHA256

    7d81f4de0b63fb2ef53522d0f5ee8841ceb7ec4f1ce23dd6d7bf42ecabe22632

    SHA512

    ee6697e587eea276f36afbd8af444a39279c6aaad13a4b949bbc6d9af48167bc7a2f46057b11c30b2a4938ab91ebbb451ba92b7a7d4fe2e019b3ca44b64ab6ff

    Download Submit

  • /data/data/com.zkasaslkasata.kuri/no_backup/androidx.work.workdb-wal
    Filesize

    108KB

    MD5

    b2c0f62bb76ca12bf75bdb44546a3869

    SHA1

    0b4ba9e72cc59b803ed49a96fde86355b99f1d77

    SHA256

    dbdd94651549c4a012f7dc3dcc77a8993b2fb9175c0189e4e4863601b17ea6d7

    SHA512

    f7d7a60b512ed25e4be72758c3e91c4403bbe7624c74b0b1413456c8d4fbc7eb71f255659f84a24aec4875fd78d5d8e682d08f9c5c186260f56fbdf9b1dde3b6

    Download Submit

  • /data/data/com.zkasaslkasata.kuri/no_backup/androidx.work.workdb-wal
    Filesize

    173KB

    MD5

    a464bce292a92bb2f1fb5f625098607f

    SHA1

    7a68123dad60415f7860b28ed649eaa804955edc

    SHA256

    b7cc96a80063c9daa1c41ef758c3685d3a367890ad25131e54b0c8dd14334789

    SHA512

    8aa73c1affff81f6276312ab3ec1e5d1067880b4182f36624753c5051ad39cc602e710aaec89e27b269535a2743643af979324f050f3fb390ecd53fc38fc6eb4

    Download Submit

  • /data/user/0/com.zkasaslkasata.kuri/app_exercise/UNq.json
    Filesize

    1.7MB

    MD5

    40a20d8c23e21773552ed5f59ecb321f

    SHA1

    4823c1f50540d987bd530b729f908fbefce04def

    SHA256

    b5c5ef231d9a03d37e7c9b99e2796734f072cc085b117f4e424c9583db02dc01

    SHA512

    5e4634b040c5989763fce4f9e8776d19687f0dd2a169cbbc13ef4ae4563aba1a1fcb19b22486814bf3d220eb87db7c5437433a2fd3310b5378d804b4fe5f3570

    Download Submit