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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
    30s
  • max time network
    157s
  • platform
    android_x64
  • resource
    android-x64-20240624-en
  • resource tags

    androidarch:x64arch:x86image:android-x64-20240624-enlocale:en-usos:android-10-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_accessdiscoveryevasionexecutionimpactinfostealerpersistencerattrojan

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
  • 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
  • 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
  • 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

Processes

  • nrv.yqmmemf.oh
    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
    • Queries information about the current Wi-Fi connection
    • Queries the mobile country code (MCC)
    • 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)
    PID:4972

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

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

    1.5MB

    MD5

    79a4680b0f4d5270e41b56096949d1c8

    SHA1

    00eef360ba587f685e5f0745526031e1d648d4ce

    SHA256

    b90194b0357d4c06a7519897a6f2937e9f0c11b092391a628ed18c30fdf2629c

    SHA512

    41a3d8c7039a060e28431f840c39403cc2fe5ba91800f27c9313f75f686d4dcf341018d1ce26ce0a5f1e234833339ad8a84feb1c6a1e3da2f42419a9797a36b3

    Download Submit

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

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

    Download Submit

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

    512B

    MD5

    8812f4b67d75e240c94dfb4b923e28c9

    SHA1

    1c99b00d4a67185a0fb9269ff12f3dd3e6da7e13

    SHA256

    5e55c526973753102004910aa0d8a2b2c6efcc986749370214d7598d02c1e7d4

    SHA512

    19635bb72e8f665dcb801ebe33428eb07bec2f88343e2df4f57461c6662d11b2125ca93e87977d358977cfb3b9fc57d14be64e408143aba70b6327bf50e0e107

    Download Submit

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

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

    Download Submit

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

    16KB

    MD5

    e3f7bef861d9519eaf73e432cc2d236c

    SHA1

    a1070bbfc65c86ed4cf3656d0179aee8b1c5f81b

    SHA256

    0b23cbd20091628a758a972659fb79b7d77534636969115ac018a0c616ec0b46

    SHA512

    f4a722ffdc7f31f5585320185c99845acd0c1909d89f612ab417cecfe69336520f81157cb10db29dbe54a7121ab1cbbd95e2859a3cb87b869767c79cd42cfb9c

    Download Submit

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

    108KB

    MD5

    6ef7ccc75474af0c353d2d18da569a3f

    SHA1

    5d48a98f52b6c4bb5699797953ea4216c9857781

    SHA256

    b9a9671b463d177cae2a4033da232db033977d3aaf1121f4cbbea996a1098161

    SHA512

    acda48b8bab381e1587f620e45b1d663e1e1d732ddb672b031cd3b4e7d8ff02e7b903f311fb13bf46c349397fb8761fc2c6f1ea0efea2e8299465a96f66d1396

    Download Submit

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

    173KB

    MD5

    5ede7b83c122764e791be7ee07abfd8a

    SHA1

    3a662ef85d8bbbe8f8c370efb9780d8bca31d43e

    SHA256

    03aea8540a4944c7c278879e64dfd04ec5be985d46b2ced032cac10c3040ee84

    SHA512

    efa3c125ee69247d3e7ca452d80c5b72f9e0f79a3d19243f25ebef6aae1abb693b0365e0e151b49dd47f93da01abf88ab111f841b56705a7e9b497e01db685e6

    Download Submit