Malware Analysis Report

2024-09-09 15:31

Sample ID 240319-t44krsgf26
Target app-debug-1.apk
SHA256 6bdbfdf7ecea8e11bf64900c381b5372358074d42e54b355ac9156ad40d1eaa1
Tags
ermac hook collection evasion infostealer rat stealth trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

6bdbfdf7ecea8e11bf64900c381b5372358074d42e54b355ac9156ad40d1eaa1

Threat Level: Known bad

The file app-debug-1.apk was found to be: Known bad.

Malicious Activity Summary

ermac hook collection evasion infostealer rat stealth trojan

Ermac family

Ermac2 payload

Hook

Makes use of the framework's Accessibility service

Removes its main activity from the application launcher

Requests enabling of the accessibility settings.

Declares broadcast receivers with permission to handle system events

Acquires the wake lock

Declares services with permission to bind to the system

Requests dangerous framework permissions

Requests disabling of battery optimizations (often used to enable hiding in the background).

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-19 16:37

Signatures

Ermac family

ermac

Ermac2 payload

Description Indicator Process Target
N/A N/A N/A N/A

Declares broadcast receivers with permission to handle system events

Description Indicator Process Target
Required by device admin receivers to bind with the system. Allows apps to manage device administration features. android.permission.BIND_DEVICE_ADMIN N/A N/A

Declares services with permission to bind to the system

Description Indicator Process Target
Required by notification listener services to bind with the system. Allows apps to listen to and interact with notifications on the device. android.permission.BIND_NOTIFICATION_LISTENER_SERVICE N/A N/A
Required by accessibility services to bind with the system. Allows apps to access accessibility features. android.permission.BIND_ACCESSIBILITY_SERVICE N/A N/A

Requests dangerous framework permissions

Description Indicator Process Target
Required to be able to access the camera device. android.permission.CAMERA N/A N/A
Allows an application to write to external storage. android.permission.WRITE_EXTERNAL_STORAGE N/A N/A
Allows an application to read from external storage. android.permission.READ_EXTERNAL_STORAGE N/A N/A
Allows an application to read SMS messages. android.permission.READ_SMS N/A N/A
Allows an application to send SMS messages. android.permission.SEND_SMS N/A N/A
Allows an application to receive SMS messages. android.permission.RECEIVE_SMS N/A N/A
Allows read only access to phone state, including the current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device. android.permission.READ_PHONE_STATE N/A N/A
Allows read access to the device's phone number(s). android.permission.READ_PHONE_NUMBERS N/A N/A
Allows an application to read the user's call log. android.permission.READ_CALL_LOG N/A N/A
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call. android.permission.CALL_PHONE N/A N/A
Allows an app to access approximate location. android.permission.ACCESS_COARSE_LOCATION N/A N/A
Allows an application to read the user's contacts data. android.permission.READ_CONTACTS N/A N/A
Allows an application to write the user's contacts data. android.permission.WRITE_CONTACTS N/A N/A
Allows access to the list of accounts in the Accounts Service. android.permission.GET_ACCOUNTS N/A N/A
Allows an app to create windows using the type LayoutParams.TYPE_APPLICATION_OVERLAY, shown on top of all other apps. android.permission.SYSTEM_ALERT_WINDOW N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-19 16:37

Reported

2024-03-19 17:37

Platform

android-x64-arm64-20240221-en

Max time kernel

304s

Max time network

310s

Command Line

com.desemohacate.rujigepe

Signatures

Hook

rat trojan infostealer hook

Makes use of the framework's Accessibility service

collection evasion
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText N/A N/A
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId N/A N/A
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A

Removes its main activity from the application launcher

stealth trojan evasion
Description Indicator Process Target
N/A N/A N/A N/A

Requests enabling of the accessibility settings.

Description Indicator Process Target
Intent action android.settings.ACCESSIBILITY_SETTINGS N/A N/A

Acquires the wake lock

Description Indicator Process Target
Framework service call android.os.IPowerManager.acquireWakeLock N/A N/A

Requests disabling of battery optimizations (often used to enable hiding in the background).

evasion
Description Indicator Process Target
Intent action android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS N/A N/A

Processes

com.desemohacate.rujigepe

Network

Country Destination Domain Proto
GB 142.250.180.14:443 tcp
GB 142.250.180.14:443 tcp
GB 142.250.180.14:443 tcp
N/A 224.0.0.251:5353 udp
GB 216.58.213.10:443 udp
GB 142.250.200.46:443 udp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.200.8:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 null udp
US 1.1.1.1:53 accounts.google.com udp
US 1.1.1.1:53 accounts.google.com udp
US 1.1.1.1:53 static.xx.fbcdn.net udp
US 1.1.1.1:53 m.youtube.com udp
US 1.1.1.1:53 images-na.ssl-images-amazon.com udp
US 1.1.1.1:53 en.m.wikipedia.org udp
US 1.1.1.1:53 a.espncdn.com udp
NL 185.15.59.224:443 en.m.wikipedia.org tcp
US 1.1.1.1:53 s.yimg.com udp
GB 104.86.110.176:80 a.espncdn.com tcp
US 1.1.1.1:53 ir.ebaystatic.com udp
GB 87.248.114.11:443 s.yimg.com tcp
US 1.1.1.1:53 www.instagram.com udp
PL 93.184.223.214:443 ir.ebaystatic.com tcp
GB 163.70.151.174:443 www.instagram.com tcp
US 1.1.1.1:53 www.google.com udp
GB 142.250.187.228:443 www.google.com tcp
US 1.1.1.1:53 accounts.google.com udp
BE 64.233.184.84:443 accounts.google.com tcp
US 1.1.1.1:53 static.xx.fbcdn.net udp
US 1.1.1.1:53 m.youtube.com udp
US 1.1.1.1:53 images-na.ssl-images-amazon.com udp
GB 157.240.221.16:443 static.xx.fbcdn.net tcp
GB 157.240.221.16:443 static.xx.fbcdn.net tcp
US 1.1.1.1:53 images-na.ssl-images-amazon.com udp
US 1.1.1.1:53 m.youtube.com udp
GB 18.244.181.41:443 images-na.ssl-images-amazon.com tcp
GB 216.58.201.110:443 m.youtube.com tcp
US 1.1.1.1:53 update.googleapis.com udp
GB 142.250.180.3:443 update.googleapis.com tcp
US 1.1.1.1:53 mcletkat udp
US 1.1.1.1:53 oujzveilgk udp
US 1.1.1.1:53 aisuywmkbvhm udp
GB 216.58.201.100:443 tcp
GB 216.58.201.100:443 tcp
US 1.1.1.1:53 update.googleapis.com udp
GB 172.217.16.227:443 update.googleapis.com tcp
GB 172.217.16.227:443 update.googleapis.com tcp
GB 142.250.187.226:443 tcp
GB 142.250.200.3:443 tcp

Files

/data/user/0/com.desemohacate.rujigepe/no_backup/androidx.work.workdb-journal

MD5 c0d5406e84532cab80001c89603878be
SHA1 cbe12a9f4f72c298d71868f2d0ac332731184d5d
SHA256 842d445b917347ff526b51c77eed1877eeff9dc57c5f1f749c94966f3ffc6896
SHA512 f9a9f5790dbf62d4172a65acbdf22ffb233d3f3ebf8ab8e510bc7b2123464f177e9693773c923e4bef2374e75641ad55687ddb821d225b8903fea2608349cebc

/data/user/0/com.desemohacate.rujigepe/no_backup/androidx.work.workdb

MD5 7e858c4054eb00fcddc653a04e5cd1c6
SHA1 2e056bf31a8d78df136f02a62afeeca77f4faccf
SHA256 9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad
SHA512 d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

/data/user/0/com.desemohacate.rujigepe/no_backup/androidx.work.workdb-shm

MD5 bb7df04e1b0a2570657527a7e108ae23
SHA1 5188431849b4613152fd7bdba6a3ff0a4fd6424b
SHA256 c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479
SHA512 768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

/data/user/0/com.desemohacate.rujigepe/no_backup/androidx.work.workdb-wal

MD5 991cb8125a80e20bfd40125bd63d71a8
SHA1 1cb73805ab43b1cf0feefe5689a853a17fa288fe
SHA256 19d6eee2d0caff78ea0b7ce7c536aacebb4c42c34b713f4d4a566bed114249ff
SHA512 0f931f9aa2e9392f6ef470e6cb1764520e765174817fa2c8fd1a0978cac71a364e82f67dc3804f6783044e63dee570dc91c64fb5846f0b8e52c2e2f9df6edc34

/data/user/0/com.desemohacate.rujigepe/no_backup/androidx.work.workdb-wal

MD5 1641f18c615f9bb0042adcc45150483d
SHA1 7d1da846388f800ef3eea9e4a3180375f3de9594
SHA256 e4ecc9c8ea14e1c8da67eafe0f585635179fbb63740de01c652ed0a7a97353e4
SHA512 0cfe86d7dd5afa407f0d59a8403e1ef41178303db609de3cba566044d92fb3cad2056586117e3799ec3b22fc32252f07eba2e8ab41f635b4ffeb3dbff9db9d59

/data/user/0/com.desemohacate.rujigepe/no_backup/androidx.work.workdb-wal

MD5 ebce885668602e6dbdf833f52d5250f8
SHA1 2b80bf0af4337b892e62414c089a3d273b96b417
SHA256 7ec3c2448279210cefab678301e0595dca8fd62008646c7dd9799c019adcccbf
SHA512 43674f541760e1c7e96a557942bf11fd1a6f296cd1e341445e8cb93a31385323bfa3b9929c75b3020489bd5ee40bb30385dc7c4fad3fb8088cf6751b80ec44e9