Overview

overview

10

Static

static

6

fa38e83fb3...6f.apk

android-9-x86

10

fa38e83fb3...6f.apk

android-10-x64

10

fa38e83fb3...6f.apk

android-11-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    156s
  • 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
    14-01-2025 22:00

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General

  • Target

    fa38e83fb3671a46a81588270447804d6b6fd582f1097bcb83403f48a92d3c6f.apk

  • Size

    2.9MB

  • MD5

    264b546ecd0f21514fcd34034d20b375

  • SHA1

    cea0b5218d3b0c513c726a5754f20b3aa3b56b06

  • SHA256

    fa38e83fb3671a46a81588270447804d6b6fd582f1097bcb83403f48a92d3c6f

  • SHA512

    0b1fd6d9fb4bf8d6b61b0ed9694951361f17f33868cda7867fd48b680c413d30e864152fbfb7b85d0a85ab1223ed02152dd42fbc01cf1d03e6ebeb31db586480

  • SSDEEP

    49152:HqQ58MSL+3bIOpdziY81Wuz9rg7FO0tMZ39KhKDuTrsEhtuS3Rqjnq4VPn7ZqC/7:HFyMSLKIe2Y+7zErotUTrHtvRq+gv9qQ

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 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
  • 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.kaskasaslkasata.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:4266
    • /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.kaskasaslkasata.kuri/app_slot/SKja.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.kaskasaslkasata.kuri/app_slot/oat/x86/SKja.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4293

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.kaskasaslkasata.kuri/app_slot/SKja.json
    Filesize

    736KB

    MD5

    737752da762d9de1a28e32fc49eb72e3

    SHA1

    b2739d2102efa1f401547f0d31689c4b695fbe27

    SHA256

    3030081646124dc970f08fd8f031a4359e269657a16d579767a0421b7d64e3e3

    SHA512

    c00ce61d21ed5d7c3eef1240c3cd940abd028642f02b7898ceb07070749d1f59d39817f4033e3c65128174deadfbb243210ceca4a87e985ac50597d3bda69123

    Download Submit

  • /data/data/com.kaskasaslkasata.kuri/app_slot/SKja.json
    Filesize

    736KB

    MD5

    35dbd4d4bc1fd290aebb6b5339b62487

    SHA1

    5c7178af333481216f99ac3178b09586d4f37d18

    SHA256

    d3353684d46a65480b82ddc53b9653015d6cd5cef0d07980c056d253b674e88e

    SHA512

    107d043547cc0076a3956f85c4ce994122f677a7b60e4a0294e77d0fb48ea5d158dc557de9c870c4ebc8f93ffbcbbf5e23e8b9eded18db49d32e4e9b3b0cbb10

    Download Submit

  • /data/data/com.kaskasaslkasata.kuri/app_slot/oat/SKja.json.cur.prof
    Filesize

    2KB

    MD5

    57f01cc5edcdb4a33e861c5900715759

    SHA1

    9962368e21ad3e152cb9779c1067224bfe550e2a

    SHA256

    faf959745be4c614e3450ae99f8ba6334ef8d1426a4749f133bf5fc31da1a916

    SHA512

    9f0bcc89f71141548c218ad1f3716c17c98bd8e4cb965973e1b38f4a0f1d2d8ecd1f9e71359905b3c03af669f418cbc234d70a29429dd2bfc55ce8b182053905

    Download Submit

  • /data/data/com.kaskasaslkasata.kuri/app_slot/oat/SKja.json.cur.prof
    Filesize

    2KB

    MD5

    f8990cf6a38e3facdaf3116d7e61086d

    SHA1

    e52d6d7e2ccdbcc390cc58d16454c7e44e10b62f

    SHA256

    df8281cd72e99a1fd4f8a235f2cec4c48556bacc5e79acf32d6039e6139d3bcf

    SHA512

    b708877dd0fa0e71fc99a9889e8d32d2d2323c22eb70a25ed05d1484ba6688bcac7351f0b2df6c544527e3af42f6b7e3968532857480b1a2cb5f57e48bd264e6

    Download Submit

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

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

    Download Submit

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

    512B

    MD5

    44cb1d59bbd7a92c463cfe6c8c8ce0ab

    SHA1

    de7c7ff0fcbbbdb015d8a789bc3081bad4710c02

    SHA256

    b812d34fa4d0412ac5b3977a9c076fa7add5f652a5aa39fea2b9951a011b1d82

    SHA512

    b1b40add0e20616da25b97efb7cc29cd493222dd2f9a25f7997d246023e2212affa1e553036468e69d522b0d60f51de09c185f128d2192c7ee1bd159ca09b8f5

    Download Submit

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

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

    Download Submit

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

    108KB

    MD5

    51e8a9e2577d870ed89ab58e855439ce

    SHA1

    8d6325b9f717d6da15a71ab13d8e67f9818768c8

    SHA256

    4616f1b9708c74e5d481269dae43fc606f26a12bdc278e6195dd7f2e964ee3d9

    SHA512

    1c210da776755df4fa98243b887337dcd420b094823d0e41dd8170e5c4f4a46363c57372d082497e5ae4b11ed3e8617b26cef56f1b10de82a2914d3e558600d2

    Download Submit

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

    173KB

    MD5

    5e4dd224e742c2fea3bea6f0ea610145

    SHA1

    b63cd18b043df8a90c2847b7785d3c674f043271

    SHA256

    d0d994e3c039cd246cff645a9e111462ca7f4c674d9c261c0cb61bf701fa507c

    SHA512

    a4376e293d4f236f3966ed6c14e51583f6d63d7592c7f6b9266af62259d54e1c34e4820229482e512769cf68ebaead9325b454f37a402c3d1cd4cc6d08849306

    Download Submit

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

    16KB

    MD5

    bcbb02340d1903f984779e72ca40dbc4

    SHA1

    f89548c8b49b40b71682d816780d627738058f64

    SHA256

    aa2ee73690a3f0593baf43af6031a8642cf848dee38da5ca476f03b9ae204126

    SHA512

    fca0eec11d680dc770362c071a93e6d6eae880a435bc797b73a84ab2dea68fad6a640e140cef9dc65befab977f3b44d9be3f5704d63273d34d5e2c6702287397

    Download Submit

  • /data/user/0/com.kaskasaslkasata.kuri/app_slot/SKja.json
    Filesize

    1.7MB

    MD5

    973f08c8ceaff6a87fe37623ba41e96b

    SHA1

    eea39f86894642fa8fcd438d6f67c5f0199e9926

    SHA256

    31db1d7fb0c5fb11ec3eecb7bbfa201e46bb4eaf5a7a7d0f74da385e62fdfad3

    SHA512

    17122113e0e821eaf30bcf35bad6025b92ad488a22d6c74f78d9f4915d708483496d195c0eb3ab67c5e98f6772987fdbc04167593dbb09b54fc45d12a8eaa932

    Download Submit

  • /data/user/0/com.kaskasaslkasata.kuri/app_slot/SKja.json
    Filesize

    1.7MB

    MD5

    b5a1aeefd71d8cbb9e33d373af5d291e

    SHA1

    d04776acf6adf304decd51d472ea7dbd5b3e0a43

    SHA256

    ebb2421d9052850293657f1560435e18d2a8c6e454ed72483f67b2f9f86d132b

    SHA512

    235301dd4ed83564bf233257f1acbf254d27ffd535cc08fc31866cd8cbfee70328215057848fc8ed59d28a0cf6b4220e00ada08b620bba159cff35441ad78d4e

    Download Submit