hook | d509b8190a0a0638f2843d5131b889bbd706e1fea92ca7afe9f6d36fa04dce31

Analysis

max time kernel
20s
max time network
164s
platform
android_x64
resource
android-x64-20240624-en
resource tags

androidarch:x64arch:x86image:android-x64-20240624-enlocale:en-usos:android-10-x64system
submitted
09-10-2024 22:08

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General

Target

d509b8190a0a0638f2843d5131b889bbd706e1fea92ca7afe9f6d36fa04dce31.apk
Size

3.4MB
MD5

2f6113bd114d16add9d0a5fda8b9f77a
SHA1

5cf070ff727454e2010215546740fa33c4ad42f2
SHA256

d509b8190a0a0638f2843d5131b889bbd706e1fea92ca7afe9f6d36fa04dce31
SHA512

e57897151222a5b698266b96e7a1a962ff4982eee7385419d647e43f27d0df1d077338f803b34691aabbceb1c7e694623d5e1bff465b4ef0a0a55d0712f2ffee
SSDEEP

49152:olkBrgukPnA66MQ6TQFheOPBMldxGIqiuCjpuylt3QbDNXXzcREc9KwRVzLokGO7:oGQPnA66J/qjkiuPjJXj7c8wRFoZy

Score

10^/10

hook banker collection credential_access discovery evasion execution impact infostealer persistence rat trojan

Malware Config

Extracted

Family

hook

http://89.248.201.43

DES_key

AES_key

Signatures

Hook
Hook is an Android malware that is based on Ermac with RAT capabilities.
rat trojan infostealer hook

Loads dropped Dex/Jar 1 TTPs 2 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

Processes:

com.yxsfjxnfs.avkeoizrg

ioc	pid	process
/data/user/0/com.yxsfjxnfs.avkeoizrg/app_dex/classes.dex	4979	com.yxsfjxnfs.avkeoizrg
/data/user/0/com.yxsfjxnfs.avkeoizrg/app_dex/classes.dex	4979	com.yxsfjxnfs.avkeoizrg

Makes use of the framework's Accessibility service 4 TTPs 3 IoCs

Retrieves information displayed on the phone screen using AccessibilityService.

collection evasion credential_access

Input Injection

T1516

Screen Capture

T1513

Keylogging

T1417.001

GUI Input Capture

T1417.002

Processes:

com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.yxsfjxnfs.avkeoizrg
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.yxsfjxnfs.avkeoizrg
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.yxsfjxnfs.avkeoizrg

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
banker discovery

Security Software Discovery
T1418.001
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

Process Discovery
T1424

Processes:

com.yxsfjxnfs.avkeoizrg

description ioc process

Framework service call android.app.IActivityManager.getRunningAppProcesses com.yxsfjxnfs.avkeoizrg
Queries the phone number (MSISDN for GSM devices) 1 TTPs
discovery

System Network Configuration Discovery
T1422
Acquires the wake lock 1 IoCs

Processes:

com.yxsfjxnfs.avkeoizrg

description ioc process

Framework service call android.os.IPowerManager.acquireWakeLock com.yxsfjxnfs.avkeoizrg
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.
evasion persistence

Foreground Persistence
T1541

Processes:

com.yxsfjxnfs.avkeoizrg

description ioc process

Framework service call android.app.IActivityManager.setServiceForeground com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework service call	android.app.IActivityManager.getRunningAppProcesses	com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework service call	android.app.IActivityManager.setServiceForeground	com.yxsfjxnfs.avkeoizrg

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

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

Processes:

com.yxsfjxnfs.avkeoizrg

ioc	process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.yxsfjxnfs.avkeoizrg
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.yxsfjxnfs.avkeoizrg
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.yxsfjxnfs.avkeoizrg
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.yxsfjxnfs.avkeoizrg
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.yxsfjxnfs.avkeoizrg

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

System Network Connections Discovery
T1421

Processes:

com.yxsfjxnfs.avkeoizrg

description ioc process

Framework service call android.net.wifi.IWifiManager.getConnectionInfo com.yxsfjxnfs.avkeoizrg
Queries the mobile country code (MCC) 1 TTPs 1 IoCs
discovery

System Network Configuration Discovery
T1422

Processes:

com.yxsfjxnfs.avkeoizrg

description ioc process

Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone com.yxsfjxnfs.avkeoizrg
Reads information about phone network operator. 1 TTPs
discovery

System Network Configuration Discovery
T1422
Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
persistence

Broadcast Receivers
T1624.001

Processes:

com.yxsfjxnfs.avkeoizrg

description ioc process

Framework service call android.app.IActivityManager.registerReceiver com.yxsfjxnfs.avkeoizrg
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.
execution persistence

Scheduled Task/Job
T1603

Processes:

com.yxsfjxnfs.avkeoizrg

description ioc process

Framework service call android.app.job.IJobScheduler.schedule com.yxsfjxnfs.avkeoizrg
Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
impact

Data Encrypted for Impact
T1471

Processes:

com.yxsfjxnfs.avkeoizrg

description ioc process

Framework API call javax.crypto.Cipher.doFinal com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework service call	android.net.wifi.IWifiManager.getConnectionInfo	com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework service call	com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone	com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework service call	android.app.IActivityManager.registerReceiver	com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework service call	android.app.job.IJobScheduler.schedule	com.yxsfjxnfs.avkeoizrg

description	ioc	process
Framework API call	javax.crypto.Cipher.doFinal	com.yxsfjxnfs.avkeoizrg

com.yxsfjxnfs.avkeoizrg
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)
- 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:4979

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

T1603

Persistence

Event Triggered Execution

T1624

Broadcast Receivers

T1624.001

Foreground Persistence

T1541

Scheduled Task/Job

T1603

Privilege Escalation

Defense Evasion

Download New Code at Runtime

T1407

Foreground Persistence

T1541

Impair Defenses

T1629

Prevent Application Removal

T1629.001

Input Injection

T1516

Credential Access

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Discovery

Process Discovery

T1424

Software Discovery

T1418

Security Software Discovery

T1418.001

System Network Configuration Discovery

T1422

System Network Connections Discovery

T1421

Lateral Movement

Collection

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Screen Capture

T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Input Injection

T1516

Replay Monitor

Loading Replay Monitor...

Downloads

/data/data/com.yxsfjxnfs.avkeoizrg/app_dex/classes.dex

Filesize
2.9MB

MD5
bda7cb8932f952def25e3f1198a095d6

SHA1
a770ca68717d1f3fa7b1e089ad55ab834ff9ab2d

SHA256
6f8a840bac0431d20b98765fa20cf0c8ee792eb31c70a1cfda03a84770f5c3d2

SHA512
a48451f24edf81365e9c92e379b7f8a10df376b0128240642204de2e12bad062f9ec1eaf6f647962fc801b6601d313a6d901b1996a1de0ddd46b0fd9598165d8

Download Submit
/data/data/com.yxsfjxnfs.avkeoizrg/cache/classes.dex

Filesize
1.0MB

MD5
7a315a420f1455f5a7197a2b88ac55dd

SHA1
c89c2bb2c037457969e1747f1e7ffbb5bcd05be1

SHA256
0c0cd8185278b34db1d76a4b3c54460a6d2b044bb88308d9de28e38a2e545121

SHA512
68a5d990432b9161dcd4ca811919d2c7c725661558ba30413c7347e5144b886d35160c35eba5efe6b273855f60d5aa42de0e24f6380e4d19069fb9163f979233

Download Submit
/data/data/com.yxsfjxnfs.avkeoizrg/cache/classes.zip

Filesize
1.0MB

MD5
bbae5bf3b8d7b3174cd6a68e2b8c91fe

SHA1
54187229d0fd597ffff8ee18f8668887986e0641

SHA256
aecfa3f2dcdf61bc8a2975dc25ca36d1ac811ed583a03451a712b861549fddf1

SHA512
7c802bf7be35a2c441b460b500011499b56c16d3b8bb5d021227fffaa6a493c466cf02161bb7dae1fbdef2e7792ba9adc0a02bbf32015654988056a39e2dadf1

Download Submit
/data/data/com.yxsfjxnfs.avkeoizrg/no_backup/androidx.work.workdb

Filesize
4KB

MD5
f2b4b0190b9f384ca885f0c8c9b14700

SHA1
934ff2646757b5b6e7f20f6a0aa76c7f995d9361

SHA256
0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

SHA512
ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

Download Submit
/data/data/com.yxsfjxnfs.avkeoizrg/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
f782c43838b6157c3614dbd76f9518eb

SHA1
fde4d3c40f19f996086776cf1fe377a33f846434

SHA256
08348c5eca3a12303ece4fd17c10f1d7adaf56d7247ee413ccafb029c4e3b021

SHA512
4c5eeecd5d2f3d1e6421a7bf7331844eda04b6fa3f349312ed24c044e84f70345612bed4d146f714e3c798f26763c9dc121538fcf167faae9fb3ad3a1fe590ed

Download Submit
/data/data/com.yxsfjxnfs.avkeoizrg/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/data/com.yxsfjxnfs.avkeoizrg/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
fb45bc3f2ccaa835c752ba3b40578a87

SHA1
fe09e7600da426f450a732057049dce834c2cd4d

SHA256
a1ffae014acfbdfe6aa41f606ca322cce30fa3bdf6b7f1e56b6d1908ac13f45e

SHA512
b7064275b25d916578741193145a389bc0f03301160ffcf59be4524e1c32e22ccffde2e8e71e07de64875437d6f37869aae2c9489129c977f02ff9e25952d362

Download Submit
/data/data/com.yxsfjxnfs.avkeoizrg/no_backup/androidx.work.workdb-wal

Filesize
108KB

MD5
a339ca0348e29767091e45baa148c343

SHA1
174b154bf18e4c8c2e16f67d873e111276d7ff14

SHA256
3864c4e624a1d1c6e539468e82eec8ad046c51c32158acab8f4eaeb96c6f9f69

SHA512
d587ffaeaad02d1f490f3bd50073c986cf5d22b8fb7cbd6a54752316ec0f690e870d665709185e6faef9642336df974ada6e4862314b4bfe2a4f53f60080977b

Download Submit
/data/data/com.yxsfjxnfs.avkeoizrg/no_backup/androidx.work.workdb-wal

Filesize
173KB

MD5
b80f8f64a0c9313a20e56025d98a3737

SHA1
8d5da9c25d42fc74114f1144c41179bdbd23f8ca

SHA256
92bdc220edbd499c2651344ce5ffcd7787c6f1968b0c99af56a9e0fe89c15fe8

SHA512
b22cc65d8ca429c68bfd1c5cd467a8457e49cd604ccff1a5acfe265825d811f9503886ca5ac58cd7fafbc8349b00f0e41905410909e9c8c40400b2f2ef3d37e3

Download Submit