Overview

overview

10

Static

static

6

7cf9de0bb3...c1.apk

android-9-x86

10

7cf9de0bb3...c1.apk

android-10-x64

10

7cf9de0bb3...c1.apk

android-11-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    157s
  • 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
    10-09-2024 22:00

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General

  • Target

    7cf9de0bb33002957d7645ba2c7a4f780ec0937fc21f1471c6b665352a04eec1.apk

  • Size

    1.1MB

  • MD5

    6b64372da9eb946b68afe29f93988e4d

  • SHA1

    c6a22ecd0a29ae96ad795480ec75564c7362b562

  • SHA256

    7cf9de0bb33002957d7645ba2c7a4f780ec0937fc21f1471c6b665352a04eec1

  • SHA512

    aba562609a6171f8c2b4902989c4528b1df3ee269a1a153171fe5c0601850f19d01cbfd6f7da06f6dea6577f7515f643f161421967d690f7f040b73f4b94afe3

  • SSDEEP

    24576:QigmO91v2Ow1G02U9+9+lo/beUjFQXML+VghOjaRZjRqybK:QigmYw1GeWFQXML+VsRZsSK

Score
10/10
ermachookbankercollectioncredential_accessdiscoveryevasionexecutionimpactinfostealerpersistenceratstealthtrojan

Malware Config

Extracted

Family

ermac

C2

http://91.92.242.166:3434

AES_key

Extracted

Family

hook

C2

http://91.92.242.166:3434

AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

    bankertrojaninfostealerermac
  • Ermac2 payload 1 IoCs
  • Hook

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

    rattrojaninfostealerhook
  • Removes its main activity from the application launcher 1 TTPs 1 IoCs
    stealthtrojanevasion
  • 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 4 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 disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
    evasion
  • Requests enabling of the accessibility settings. 1 IoCs
  • 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

Processes

  • nrv.yqmmemf.oh
    1⤵
    • Removes its main activity from the application launcher
    • 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 disabling of battery optimizations (often used to enable hiding in the background).
    • Requests enabling of the accessibility settings.
    • Schedules tasks to execute at a specified time
    • Uses Crypto APIs (Might try to encrypt user data)
    PID:4508

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

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

Credential Access

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 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

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Downloads

  • /data/user/0/nrv.yqmmemf.oh/app_apkprotector_dex/classes-v1.bin
    Filesize

    1.5MB

    MD5

    79a4680b0f4d5270e41b56096949d1c8

    SHA1

    00eef360ba587f685e5f0745526031e1d648d4ce

    SHA256

    b90194b0357d4c06a7519897a6f2937e9f0c11b092391a628ed18c30fdf2629c

    SHA512

    41a3d8c7039a060e28431f840c39403cc2fe5ba91800f27c9313f75f686d4dcf341018d1ce26ce0a5f1e234833339ad8a84feb1c6a1e3da2f42419a9797a36b3

    Download Submit

  • /data/user/0/nrv.yqmmemf.oh/no_backup/androidx.work.workdb
    Filesize

    4KB

    MD5

    7e858c4054eb00fcddc653a04e5cd1c6

    SHA1

    2e056bf31a8d78df136f02a62afeeca77f4faccf

    SHA256

    9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad

    SHA512

    d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

    Download Submit

  • /data/user/0/nrv.yqmmemf.oh/no_backup/androidx.work.workdb-journal
    Filesize

    512B

    MD5

    8930ad5656aa1f0ef39860f93d5c77bc

    SHA1

    c09f9b6b78057dc0be4cc530d5c98953f0a39593

    SHA256

    94a3a396232b7ff10dd0062d478f35f46496cc55757da06e46a95e460ace7ffc

    SHA512

    766fe8433862560001ac6cca7453c4f4171fcd84e979ae673cf5873eb944fe1398b31cf395ab20ee51aa76912f3ba7d3e7b34cb86043dcb7e6ca97c669012c16

    Download Submit

  • /data/user/0/nrv.yqmmemf.oh/no_backup/androidx.work.workdb-shm
    Filesize

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

    Download Submit

  • /data/user/0/nrv.yqmmemf.oh/no_backup/androidx.work.workdb-wal
    Filesize

    16KB

    MD5

    23594d85052516921ee7f7d5ebfb6ce9

    SHA1

    d9ab57b626b4dad809f1116d6396eb4a0a783561

    SHA256

    f6abd1015d237d55a8938669b4e11c77569783573a538de34194e63c9fcbf92b

    SHA512

    b4532571854b99ad2d06380ba618069fa1ed8898669b9360b7d62c6d0ec47e46f7b175b00de59cf770c1ec72b2c922850728da24d4d39714aa0a10ce2fa9650e

    Download Submit

  • /data/user/0/nrv.yqmmemf.oh/no_backup/androidx.work.workdb-wal
    Filesize

    108KB

    MD5

    8e2c5853eb125e01127a956523647d19

    SHA1

    d9cfc6ea7ec2b07beb0a7d665757dabc945c3cbb

    SHA256

    227fd924fd2b9cc44add855e9a2dae48ff464dd5453c70facb6bc6297e6ea696

    SHA512

    799d3dcc692814dd0a3998d07088cf1f8ce455665e242776f1d3fc2a70750e4b0ecab29b1fe0343f45fb1ae764d581b205719e828b06f7f9321c2289a91d9468

    Download Submit

  • /data/user/0/nrv.yqmmemf.oh/no_backup/androidx.work.workdb-wal
    Filesize

    173KB

    MD5

    687cd7c58f8a380cc374e1ddbcfd3d45

    SHA1

    3fa7f5e305008a2c4c0f92777e594b1a837a9d32

    SHA256

    d8ce852a403489cf8b4e3c37e3399eb0212d9e18b6468ab526cd321bc5733976

    SHA512

    bddf1f00f85f1f6c902fbb4fe3ff515d9b3cc702080a9d3ae8d1e626926fac16b6a859fd8fd530b7c4b3bd68b6d2838d10528bab8675020986952dc0f86aaee4

    Download Submit