Malware Analysis Report

2024-09-09 14:00

Sample ID 240502-a6cqaaca3z
Target ad778bfe6c0181150b911cae0e337c34.apk
SHA256 ae502f67782e9cc2a6e33b868f14467f3dabf126e868a8e10a68aa2ddd4092e1
Tags
discovery persistence collection credential_access evasion impact ermac
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

ae502f67782e9cc2a6e33b868f14467f3dabf126e868a8e10a68aa2ddd4092e1

Threat Level: Known bad

The file ad778bfe6c0181150b911cae0e337c34.apk was found to be: Known bad.

Malicious Activity Summary

discovery persistence collection credential_access evasion impact ermac

Ermac family

Ermac2 payload

Makes use of the framework's Accessibility service

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

Queries the phone number (MSISDN for GSM devices)

Loads dropped Dex/Jar

Requests enabling of the accessibility settings.

Queries the mobile country code (MCC)

Queries information about the current Wi-Fi connection

Makes use of the framework's foreground persistence service

Reads information about phone network operator.

Declares broadcast receivers with permission to handle system events

Declares services with permission to bind to the system

Requests dangerous framework permissions

Acquires the wake lock

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

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-02 00:49

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: behavioral2

Detonation Overview

Submitted

2024-05-02 00:49

Reported

2024-05-02 00:51

Platform

android-x64-20240221-en

Max time kernel

4s

Max time network

157s

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 142.250.200.14:443 android.apis.google.com tcp
GB 216.58.204.68:443 tcp
US 1.1.1.1:53 www.google.com udp
GB 172.217.169.36:443 www.google.com tcp
GB 142.250.187.238:443 tcp
GB 142.250.200.2:443 tcp

Files

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

MD5 5c0eb3dcd914cd6b4fa6a1e7344d3492
SHA1 ad9d22299606f7642f687d456310308a1adcbe83
SHA256 f136ef3cb2e300a975d1906c5a122df325138bf54062cf753cc0437303cd8af1
SHA512 ea10625fbbb88fcea3a80adeaa293abb1ae25281edb6e0ac28291aaeea59450f667f1ba33242356bd8b30b14e1fd0c04434091fd483df2632a430dd666a251e9

/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 3b6f8a03f501961bb21f352189809648
SHA1 18373bc73fc997fe85e60b0a2736b8e89a2093db
SHA256 1775eca00f7074e1adb9cb63e3654d914ffbf0a57692808c556fa9a5169c513e
SHA512 ba90b756bbead3a720e3059737e33db7fe2ac013f4837a7dd72f53efc7c5a793117245cf3e9d53cf8b477ae7a7b05b5dbdd525f703908a818fa90f574135a422

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

MD5 b0c40c4b1c1f30051fb20dd4a154d223
SHA1 9ee66b8306f92278cc7357dc88a8f2dfe47de605
SHA256 be646643fd7224f8c9e706d33b407747decc4032cac035323ff88d115854d116
SHA512 4da7647b1ae0c7843e5e67be0f789f918297d2075e9ef3d208f6360e1d7f3cebbaee4eb0efa1835f05b1fbea65f85bfca7c11d00b6ea841b10aec2efa6f76b95

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

MD5 687d5d5bae480fdbbb9c24ce88e7abb9
SHA1 bc834e55c98f30247294c83e0b4478d7cd17aaea
SHA256 4ac06da43c86f4be4a262e635ad0e1868e7b8e80930d39025d4ec6a0216956e6
SHA512 58d1b0ce30846f39ac460cca84a846d4335397492fb3028d05fbf40777a3f7959f59429bd5a01bc7c8b4058ec0801f1d144cb2767880d9fe076b72cc1a134862

Analysis: behavioral3

Detonation Overview

Submitted

2024-05-02 00:49

Reported

2024-05-02 00:51

Platform

android-x64-arm64-20240221-en

Max time kernel

111s

Max time network

158s

Command Line

com.rekezapayojekubu.kebi

Signatures

Makes use of the framework's Accessibility service

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

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

Makes use of the framework's foreground persistence service

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

Queries information about the current Wi-Fi connection

discovery
Description Indicator Process Target
Framework service call android.net.wifi.IWifiManager.getConnectionInfo 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

Queries the phone number (MSISDN for GSM devices)

discovery

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

Reads information about phone network operator.

discovery

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

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal N/A N/A

Processes

com.rekezapayojekubu.kebi

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 216.58.212.238:443 udp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.200.14:443 android.apis.google.com tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 216.58.201.104:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 null udp
GB 172.217.169.4:443 tcp
GB 172.217.169.4:443 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 10d936483c54fe634083e4d28c502576
SHA1 96b775266dc2167cffe92e2bfb32efa255eb5e8e
SHA256 ea4a4617c8ffa322c05457a73b0535c7395e13eb502d49d7c6aa3ea778252b89
SHA512 c57284a72409e723894d6b77f27024e5415921a96caf2f5fe3f2b26ed0857bcadea39dad038d4eee414b1e2eee6def8c9f21fcd8a1d10050a2908918fb9601e4

/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 9d0e52e171fc653685881ee8b3b9f5c8
SHA1 627c5721d104c5d72a51f5fcf6a578970ae8ab6b
SHA256 55e9d925b1c722cb57e037464ab9ad8715f7ffd7cdac35fd434a1549741d9f0c
SHA512 15b4ed836f06e07bc4949ba39fca1822c140e7e5abc9ff5171483c917f0503eb68e586f871d2e533e65ad579ea2a2cd47acbb42f33fa93092e98d84674c333f0

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

MD5 74053ed567b29dbd98adcebfc594cf10
SHA1 9888f268141b0a4bf1e5af89a6cbd49fde998fc7
SHA256 4769d13ee84630fd1d4d1a85cb6de0e1ea899fb191e1bb96a5a352cccbec1b4a
SHA512 98201075cc8c792c6d49fb63eec6c573f392be9c53a7343f0896694fdd3a9a0f605e3ff86c6100bc7c6f40d1f7224556540272fce76616e86dfcac064de8daca

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

MD5 a1d694a328c2ee043246b1d94bb41b9e
SHA1 1804c28e3291f2b3a976fbaea88cb1df4785f483
SHA256 f256712c652a9d0d34f4ee03ecdad365793639c6a6c217699bac3d1b5faf5ad3
SHA512 7a97d70cd6094c4eb78527f41cc9f1de728f76d33c0413f02f6914bc7227b19725a4257d82bec5282acb11e20c27537ba3238c7451a9a990a0e19b20abaa3106

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-02 00:49

Reported

2024-05-02 00:51

Platform

android-x86-arm-20240221-en

Max time kernel

150s

Max time network

131s

Command Line

com.rekezapayojekubu.kebi

Signatures

Makes use of the framework's Accessibility service

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

Makes use of the framework's foreground persistence service

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

Queries information about the current Wi-Fi connection

discovery
Description Indicator Process Target
Framework service call android.net.wifi.IWifiManager.getConnectionInfo 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

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

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

Reads information about phone network operator.

discovery

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal 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 semanticlocation-pa.googleapis.com udp
US 1.1.1.1:53 null udp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.178.14:443 android.apis.google.com tcp

Files

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

MD5 c3480221554ce4652e8643eb0c085632
SHA1 d1269b4c12f6f76fb60bdcebf96e21e5d607ba0a
SHA256 76835cfc33bc1f95362f32a39f2a101c3a8f371cc65c9d8dbe70a9850e6235f2
SHA512 bf119e280b33ad73b8c2588ccbda0ea0124c737999ca49d3ae5c2a787dac735f42cee5a03115fdd58c920d1f4ab66713a9c19345bd7a880a0ba9cf251d769e72

/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 906286dd108566662af2608641057eaf
SHA1 3a72309e7968b94b47ad1ac5786064940be91efb
SHA256 e9140cba19ea5da0d765c15e83a14d03d50e4e2fbc4e565c288586ea4de3b193
SHA512 881b8749d2abf207d26b7aa4f9578b6a1d273991d6b30d456c70492396f02c1b7f1366d3e260b8062ab13ea28b83b52ed0dd4d6673734de7511289916970191b

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

MD5 7b39ac47d5f8488104f9a4af37b43927
SHA1 5ccdfbae136a5d6648cf07043604e29cd46d4d9e
SHA256 32fde823f8df7991188ea89b071c0a4b2cd0fe7e5cb54ec64b184e5c4e0351e3
SHA512 3d713828ce16ae8a42d734104d634cecc19a43be52ae0be5fca14b9d71967102d072f1db5e46d47ccb29871476826f9ce80ea690014e908ff497fe2ef31eec19

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

MD5 56e1348c643b4d5fffe1f3c63306a873
SHA1 2c86b67ce8955806c0757cf36a1101b26394a982
SHA256 e39d1058ab241a92f8f0e6adc5ebf19c06c10fab81bbdcfc569f8df82f30426f
SHA512 d39190af11302c898158635f862c9382038a84a253734e1a9973cda9c845ebda3ea3106e1c2b7b57ac43819571b1ae5ab37c46910959f8f3cf76a4a371c76592