hook | 2413614c65aa57d7e28177706be1fe50eea04c9488984644be7e3478855b1120

General

Target

2413614c65aa57d7e28177706be1fe50eea04c9488984644be7e3478855b1120.apk
Size

1.7MB
MD5

e50727bcee795f3c02d79977444a9a4f
SHA1

f0c53fc2225cccc71d875cafe0782c166745213f
SHA256

2413614c65aa57d7e28177706be1fe50eea04c9488984644be7e3478855b1120
SHA512

cc008c0aa4103b3836f61a14b2537f3a00ef9ef6ad3e925bbff8443b64cb84b34617eb80bfa4ac84bb18ec2ba024621fb85bcfe721f9a0a9e2c54f915208f717
SSDEEP

24576:jCuvK37eBIV3caDPe4LnwiRp+QTJFsj25Po4vHMqUAKyeTBg/BKOv8n:FvKLXVtb9TlJk25Po4EJWeFg/A

Score

10^/10

hook collection credential_access discovery evasion execution impact infostealer persistence rat trojan

Malware Config

Extracted

Family

hook

C2

http://134.255.180.156:3434

AES_key

Signatures

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

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

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.viber.voip
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.viber.voip
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.viber.voip

Obtains sensitive information copied to the device clipboard 2 TTPs 1 IoCs

Application may abuse the framework's APIs to obtain sensitive information copied to the device clipboard.

collection credential_access impact

Clipboard Data

T1414

Transmitted Data Manipulation

T1641.001

description	ioc	Process
Framework service call	android.content.IClipboard.addPrimaryClipChangedListener	com.viber.voip

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

description	ioc	Process
Framework service call	android.app.IActivityManager.getRunningAppProcesses	com.viber.voip

Queries the phone number (MSISDN for GSM devices) 1 TTPs
discovery

System Network Configuration Discovery
T1422

Acquires the wake lock 1 IoCs

description	ioc	Process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.viber.voip

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

description	ioc	Process
Framework service call	android.app.IActivityManager.setServiceForeground	com.viber.voip

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

description	ioc	Process
Framework service call	android.net.wifi.IWifiManager.getConnectionInfo	com.viber.voip

Reads information about phone network operator. 1 TTPs
discovery

System Network Configuration Discovery
T1422

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

description	ioc	Process
Framework service call	android.app.job.IJobScheduler.schedule	com.viber.voip

Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs

impact

Data Encrypted for Impact

T1471

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.viber.voip

Checks CPU information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/cpuinfo	com.viber.voip

Checks memory information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/meminfo	com.viber.voip

com.viber.voip
1⤵
- Makes use of the framework's Accessibility service
- Obtains sensitive information copied to the device clipboard
- 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
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4573

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

1

T1603

Persistence

Foreground Persistence

Scheduled Task/Job

Privilege Escalation

Defense Evasion

Foreground Persistence

Input Injection

Virtualization/Sandbox Evasion

2

T1633

System Checks

2

T1633.001

Credential Access

Clipboard Data

1

T1414

Input Capture

2

T1417

GUI Input Capture

1

T1417.002

Keylogging

1

T1417.001

Discovery

Process Discovery

1

T1424

System Information Discovery

2

T1426

System Network Configuration Discovery

2

T1422

System Network Connections Discovery

1

T1421

Lateral Movement

Collection

Clipboard Data

1

T1414

Input Capture

2

T1417

GUI Input Capture

1

T1417.002

Keylogging

Screen Capture

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

1

T1471

Data Manipulation

1

T1641

Transmitted Data Manipulation

Input Injection

Replay Monitor

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Downloads

/data/user/0/com.viber.voip/no_backup/androidx.work.workdb

Filesize
4KB

MD5
7e858c4054eb00fcddc653a04e5cd1c6

SHA1
2e056bf31a8d78df136f02a62afeeca77f4faccf

SHA256
9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad

SHA512
d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

Download Submit
/data/user/0/com.viber.voip/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
148d35a84f4a506f546e402f3da80ea7

SHA1
09ceb6416fd4966a24593976ecfb296ab6d7825a

SHA256
db986df3889b57f8da6e91781623141dbe8056522c4e78cf0432ae01adcb7018

SHA512
8a22c0f8ad93fd6ec0c998bae159168ce17002c98b27007e3d105a525fb3441a4d4f31053e005b32252014c3cee2658906dd49475032ddb2bd57263e85473c87

Download Submit
/data/user/0/com.viber.voip/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/user/0/com.viber.voip/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
6ec00a75a3a1ac06921dad544f44cae7

SHA1
10399bbb9efa03162b40790470392cf6760a1c3e

SHA256
af4b5f82b12f9b5dc59aeaa809c2e0782df0fa968a913e1ea7efae2c9adb3c48

SHA512
d6acb795501785f49ceb968687fcd5a6ba4a0f213c55641560cdfe38fc4dbd96eb0197f7138180ecf38524acae60d69f1c55cc487cfe02f9bbc38283b0f064e6

Download Submit
/data/user/0/com.viber.voip/no_backup/androidx.work.workdb-wal

Filesize
108KB

MD5
8f33f884c467373db9e408eb07ae156e

SHA1
4d4b7f8f0ec4880354bcd54ca1dab36fa04e4c3e

SHA256
023b64b1359768e56a24a173d9335ea2878d0ac90b4341dc5c9cc68ff251c8cc

SHA512
143d86370a754a1f826dcef849b1350683e8349406bf2e6242b690755fd772ca70942195b65885b23cfff44e61db1fb84abc8118eeb749d394e0f984d06ee2cc

Download Submit
/data/user/0/com.viber.voip/no_backup/androidx.work.workdb-wal

Filesize
173KB

MD5
7fcaf5ccae2d626605e409c277deeb9a

SHA1
10fc6cf266787a210e86dbcc17a1ff973eb68321

SHA256
7ffa2ad336d73695f30bb3eeda021a99787007fbac8f934598d27aae9114f1be

SHA512
85dfa68d247a2a0b7ed08dbd922ba1e08b1e9024d639b54374ffa446081cc4166f5a6dd7b51cdd846986468868357c15e429670f01954483232b761740aa0d0a

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads