Malware Analysis Report

2024-09-09 14:00

Sample ID 240501-1w3f3aha8v
Target ae502f67782e9cc2a6e33b868f14467f3dabf126e868a8e10a68aa2ddd4092e1.bin
SHA256 ae502f67782e9cc2a6e33b868f14467f3dabf126e868a8e10a68aa2ddd4092e1
Tags
ermac evasion stealth trojan discovery persistence
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

ae502f67782e9cc2a6e33b868f14467f3dabf126e868a8e10a68aa2ddd4092e1

Threat Level: Known bad

The file ae502f67782e9cc2a6e33b868f14467f3dabf126e868a8e10a68aa2ddd4092e1.bin was found to be: Known bad.

Malicious Activity Summary

ermac evasion stealth trojan discovery persistence

Ermac family

Ermac2 payload

Removes its main activity from the application launcher

Queries the mobile country code (MCC)

Registers a broadcast receiver at runtime (usually for listening for system events)

Loads dropped Dex/Jar

Declares broadcast receivers with permission to handle system events

Declares services with permission to bind to the system

Requests dangerous framework permissions

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-01 22:00

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

2024-05-01 22:00

Reported

2024-05-01 22:11

Platform

android-x86-arm-20240221-en

Max time kernel

3s

Max time network

82s

Command Line

com.rekezapayojekubu.kebi

Signatures

Removes its main activity from the application launcher

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

Processes

com.rekezapayojekubu.kebi

Network

Country Destination Domain Proto
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 142.250.200.42:443 semanticlocation-pa.googleapis.com tcp
GB 142.250.179.238:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 216.58.204.78:443 android.apis.google.com tcp
GB 142.250.200.42:443 semanticlocation-pa.googleapis.com tcp

Files

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-journal

MD5 5b9d778395f69592902a2f6628942c9e
SHA1 1e74e2bc8fa5d44429a728cf1bc874b2cb5767dc
SHA256 548a8f149e86c1718951ff60c897735b9d4a32729cdec6ffdca71390124798be
SHA512 4c09eb2d25bf8cf35881032fa6babd3c5ed2905f6c68078b61dd34e67300b83c413a4a2839170de7f51fbd2e46c82383e902240554722b3466f2d3bed127ea59

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb

MD5 f2b4b0190b9f384ca885f0c8c9b14700
SHA1 934ff2646757b5b6e7f20f6a0aa76c7f995d9361
SHA256 0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514
SHA512 ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-shm

MD5 cf845a781c107ec1346e849c9dd1b7e8
SHA1 b44ccc7f7d519352422e59ee8b0bdbac881768a7
SHA256 18619b678a5c207a971a0aa931604f48162e307c57ecdec450d5f095fe9f32c7
SHA512 4802861ea06dc7fb85229a3c8f04e707a084f1ba516510c6f269821b33c8ee4ebf495258fe5bee4850668a5aac1a45f0edf51580da13b7ee160a29d067c67612

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-wal

MD5 4e57f4a6837381919ba542ff30bcdc83
SHA1 27c69d1159be93af3c83ade1506062aebff03c92
SHA256 a1842197228ab5a68a0ab5c33c07815d78e5a8d4a13729d4d6d1319139f72109
SHA512 69006bd26d6560578cd8d12c715e2833afa406d2508b1cd796c04813bc807d10277b8d2562ed0eb29c1e189d2f24132dfedbe3eaf1570acf527a456be8a499e3

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-01 22:00

Reported

2024-05-01 22:09

Platform

android-x64-20240221-en

Max time kernel

5s

Max time network

142s

Command Line

com.rekezapayojekubu.kebi

Signatures

Queries the mobile country code (MCC)

discovery
Description Indicator Process Target
Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone N/A N/A

Registers a broadcast receiver at runtime (usually for listening for system events)

persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.registerReceiver N/A N/A

Processes

com.rekezapayojekubu.kebi

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 216.58.204.72:443 ssl.google-analytics.com tcp
GB 142.250.178.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.206:443 android.apis.google.com tcp
GB 142.250.187.206:443 android.apis.google.com tcp
GB 216.58.213.4:443 tcp
GB 216.58.213.4:443 tcp

Files

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-journal

MD5 76842da7af250e9ab2910ecdf25d74d5
SHA1 d0b86c5294cf14253ddd1057b158242b329e2f84
SHA256 e116c020b5f994fbc3fa935c768476445bb7c130ae9b17d338f0ed1884441896
SHA512 351ea200ef628c99f2ab4d43ec46430fbd8a29ae4508db5be8b64b51285e77e599081fe36fe465bce25d2a01afa29e198ad51696e92716a3e04b71d047581fc3

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb

MD5 f2b4b0190b9f384ca885f0c8c9b14700
SHA1 934ff2646757b5b6e7f20f6a0aa76c7f995d9361
SHA256 0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514
SHA512 ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-shm

MD5 bb7df04e1b0a2570657527a7e108ae23
SHA1 5188431849b4613152fd7bdba6a3ff0a4fd6424b
SHA256 c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479
SHA512 768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-wal

MD5 d1b50dae8fa554129ec50f6088b5fc6c
SHA1 b119c82b100a7daffdf8fa03f2f67d7f0c25c1ea
SHA256 1e0f815845525d582e96d4584a79561c72e3e997db5a6fb7be34ec6e6d80a95b
SHA512 20e1050364b8f846687cb9e06ea41dc52ef4e624a692e5869d0f920e09bebbfc0d1bb90222ac1e1ae693b3c196f2af530909d29a3fce550ee07210592205b289

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-wal

MD5 5714c5acf90e90546822964a50fe4898
SHA1 5fb75fdf8b6a33cb740cd2d5417ff5f43b2eeb3d
SHA256 2315435aaf99ea12e05b0a8026b1ec793bc201119ceaab735cf8dbb2009497dd
SHA512 11987f0d8bf32c5450d983921878e35efa4eb14770fa24a8fb20359d429cbf237b795cbf2603d9a903d55ff719a98aead26733d7225675d8d8b4b8546ca0cd31

/data/data/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-wal

MD5 1429df389a7d2409240f4aee30a26a6f
SHA1 45f2963905769b94a28d4d74fcd26d95b022ea33
SHA256 342b708622e9350f2c0f01a3149049c9136fc6548a04cb150302eadc4dbf3708
SHA512 7528196e46615943d76af3c5e441e276a50f220bcd78217f6becebe937f8643ebce4743af35d1423952a8c744b181204c25514d11bd4ab28bd6d482eed29080f

Analysis: behavioral3

Detonation Overview

Submitted

2024-05-01 22:00

Reported

2024-05-01 22:10

Platform

android-x64-arm64-20240221-en

Max time kernel

5s

Max time network

130s

Command Line

com.rekezapayojekubu.kebi

Signatures

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /system_ext/framework/androidx.window.sidecar.jar N/A N/A
N/A /system_ext/framework/androidx.window.sidecar.jar N/A N/A

Queries the mobile country code (MCC)

discovery
Description Indicator Process Target
Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone N/A N/A

Processes

com.rekezapayojekubu.kebi

Network

Country Destination Domain Proto
GB 142.250.200.14:443 tcp
GB 142.250.200.14:443 tcp
GB 142.250.200.14:443 tcp
GB 142.250.180.10:443 udp
N/A 224.0.0.251:5353 udp
GB 216.58.213.14:443 udp
US 1.1.1.1:53 android.apis.google.com udp
GB 172.217.169.14:443 android.apis.google.com tcp
GB 172.217.169.42:443 tcp
GB 172.217.169.42:443 tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.187.200:443 ssl.google-analytics.com tcp
GB 142.250.200.36:443 tcp
GB 142.250.200.36:443 tcp

Files

/system_ext/framework/androidx.window.sidecar.jar

MD5 bdf3529e80318eb14e53a5bf3720c10d
SHA1 25c9ace4b1af6e80ebb2572345972c56505969ba
SHA256 bbc8300dd1e9cd08de8f66560c1ac2c928615b72b51cef9649f88974f586d64b
SHA512 48b9c2d01171bb651b9b54826baa51f4add48431a3efd8ceb5f7cc3bcd6f8f37edf47fabb24349dd15b3a02329cd450f90a8d164bf4f8dfae554bf3b35a8a55b

/data/user/0/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-journal

MD5 4273f48c5bbe3e80e3367ff8cc56bfad
SHA1 391a074d787fc4a35dc0910d494d9f762d3ba93e
SHA256 1a18594e217ed6c3a938d518c6ee444d8bc0f13c7b43e08083678f61aa0c0147
SHA512 bde16d6c4d58ff5d5854447891704d3e2acf51c693a4b70805c298c258c8f6ca2ec741b4a77e261b3c68f255a77f967178491c3150dd7c5c7319026e48b3c485

/data/user/0/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb

MD5 7e858c4054eb00fcddc653a04e5cd1c6
SHA1 2e056bf31a8d78df136f02a62afeeca77f4faccf
SHA256 9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad
SHA512 d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

/data/user/0/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-shm

MD5 bb7df04e1b0a2570657527a7e108ae23
SHA1 5188431849b4613152fd7bdba6a3ff0a4fd6424b
SHA256 c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479
SHA512 768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

/data/user/0/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-wal

MD5 e8a191f025f044e7b1396a3ebc6f097e
SHA1 5bf5a74a57dd88e340b67297988133eacab9f993
SHA256 971ea0cd8f4c33a952eb7cf653a3013521f343fe2867087684d58ca3c2115927
SHA512 8ba9e6a70a04ce79f3df9bed67fa80aa6ce02e5777ae64f806a6442e1e6943e17dce1c5fe16628322bc87cdec3e0df8065c0f871cdf7bdf114d1691a1d32ece3

/data/user/0/com.rekezapayojekubu.kebi/no_backup/androidx.work.workdb-wal

MD5 0a5eeea04736807742ea739b7ec93ea6
SHA1 68217de5fe984eb5de2165de2039bece346a311c
SHA256 33d78fde26683611ded5772ecea6908fd150c9476c3e30e8aab17f9d484da81e
SHA512 070f0688e5d422c135812d01ff8d0262671dc1bfe4eba680568a249c81eeafac595e4ddef2000616e15cee92581df4f8820544c91193726f8b2362d41e321f81