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
    148s
  • max time network
    157s
  • 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
    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 2 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 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 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 8 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
  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
    discovery
  • Reads information about phone network operator. 1 TTPs
    discovery
  • Requests accessing notifications (often used to intercept notifications before users become aware). 1 TTPs 1 IoCs
    collectioncredential_access
  • 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.zkasaslkasata.kuri
    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
    • Performs UI accessibility actions on behalf of the user
    • Queries information about the current Wi-Fi connection
    • Queries the mobile country code (MCC)
    • Requests accessing notifications (often used to intercept notifications before users become aware).
    • 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:4341
    • /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.zkasaslkasata.kuri/app_exercise/UNq.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.zkasaslkasata.kuri/app_exercise/oat/x86/UNq.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4367

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

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

Access Notifications

1
T1517

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

3
T1422

System Network Connections Discovery

1
T1421

Lateral Movement

Collection

Access Notifications

1
T1517

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.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

    3KB

    MD5

    2403c1453e905d8067d9042b62a6dc98

    SHA1

    c5d4041b121389c30a80159ad657d09ef8a3e308

    SHA256

    bb1580747f70097d215670330ef313ff1444d6cadd7d42b68199a573ae82c076

    SHA512

    657ebccfc33e71fa599506e50fc0edc06163310faa6cba556dd71165349974c5656c92cf0ab7eab9bb6d63c288613ff51921c8727eb7279f6c53aa8a800a7b18

    Download Submit

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

    3KB

    MD5

    f4f25673d7c1dc1c99e63667cf97a7d4

    SHA1

    ac4e067a533e0091140b8b9d868888855b9e2acf

    SHA256

    862f4ffe15c5b0f35154c2745927d9847ee9f5697a8998d5d48639abb12f4e22

    SHA512

    5701ec23d3ae1cb92b5c8f84b25b8fcbbeb876e5331ec6ed95701acfd8658e30f92016eab748a635b580585a805bd214f90c612093c5a251230869349a9cffd9

    Download Submit

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

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

    Download Submit

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

    512B

    MD5

    929b8be91d4cf0d1945447f5c0276592

    SHA1

    1060825706569b1da923771c68a5a5e24e99baa5

    SHA256

    e3e13e04a2287816b89d82e2ca7f67f4866f42e1e038d501a52d0dc23fc901be

    SHA512

    b002b87dbc0239cd195f275364ada9e9a411701d7a849e5644fd7a2e6dd76d183432aded4247cb85de3c64e60f2c75bb8270ff1b498aa8e20a0e58ee691a9bef

    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

    108KB

    MD5

    5a9668fd2186ea604a2136194afc4633

    SHA1

    ea2a0f37c67f201f2605f488abf52ef9fda9ac43

    SHA256

    cccb96603acb7f9dd2f121fab9c2d6fe64c653e2a79c4b048f353510b1c209ed

    SHA512

    5d190f0c943e300d67aaa2a1c8b4204cca61dad21ec042078e5b0a8117f07ccd8d93c1d2e24b59a5d3a71e518a31a3c345d44f632e9da462be8be7537f8d7191

    Download Submit

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

    173KB

    MD5

    1fb741e130a006d93822c191972c8700

    SHA1

    8d7b4a74da0510db06a7e0d7cf8b611cdf62ceef

    SHA256

    13985a69d26664bfa42b8e77eb91c4187ddd2ae2f4f64892de29ee075ea4ec73

    SHA512

    aa9b155a400c23f7f44064e0bd461775fe0f1fed410052857a14703def1c953b61394940656470f9f985bad6302dffd6fae925810f41e0009f0158f4ec1947c7

    Download Submit

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

    16KB

    MD5

    6ee946b9127653af1ac549213e6f5da8

    SHA1

    34b4f78145769873a3e934da8152cca1715e59ab

    SHA256

    722703b417974f61292669b69f194e1386496cc6d21524404977e0daea77636f

    SHA512

    5488ec34b6216992d842cd1c86fab593e4a52fc5b2c5e5d970f85a3ee569003ebcd68f078241bb7554250f6e49d68996e481b564c211642124774ad25b61ab57

    Download Submit

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

    1.7MB

    MD5

    f72ba8a0c961759492323994be4cf7c8

    SHA1

    c38d874f53cf1dfc3e637ea997a40fdd52221470

    SHA256

    bb94a826fb0a38d73245b7401d2c2dc1845e7366ba7068ac57196b855c505419

    SHA512

    7a69b621866a1e6820c4394d303570270c4d022d903a629b45e7fd715a9f6649b4c65a7f1c5c94853e4336b804440dd4ff11af95ea6ed3e4e78398b577ddd1bf

    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