ermac | aacff9d32b16471cd14ed2cf27430d9b1e5649d194bb8d8372376322d7fc337f

Analysis

max time kernel
131s
max time network
157s
platform
android_x64
resource
android-x64-arm64-20240624-en
submitted
14/12/2024, 22:05

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General

Target

aacff9d32b16471cd14ed2cf27430d9b1e5649d194bb8d8372376322d7fc337f.apk
Size

2.8MB
MD5

c7c51f91437f54b68b54da95f6d2fec4
SHA1

cae0d1caee8f7e1c2b30263c835f13ee7cc72395
SHA256

aacff9d32b16471cd14ed2cf27430d9b1e5649d194bb8d8372376322d7fc337f
SHA512

a613f6206a974835c60d131bc9bb9042a5ff55c7934240e078ea219e66ef2ee03176b867c48909e78504618b1fcfbb0b8a9743d0ecc979fc10ebb60644caf2eb
SSDEEP

49152:bnJrgeSxCCALNz+MzmMbNRHDFQxA94Ou3ZiwuNlYGZudEilH8NGDpq5A7KObyBzL:bnzfCMzTbN/QxK4Ou3ZiwuG3csFq50b2

Score

10^/10

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

Malware Config

Extracted

Family

ermac

http://adsfgbkapmgnsdvbr.pro

http://adsfgbkapmgbrsgsh.pro

http://adsfgbkapmgdbshb.pro

http://adsfgbkapmgsdfbbnn.pro

http://adsfgbkapmgdsagbbs.pro

AES_key

Extracted

Family

hook

http://adsfgbkapmgnsdvbr.pro

http://adsfgbkapmgbrsgsh.pro

http://adsfgbkapmgdbshb.pro

http://adsfgbkapmgsdfbbnn.pro

http://adsfgbkapmgdsagbbs.pro

AES_key

Signatures

Ermac
An Android banking trojan first seen in July 2021.
banker trojan infostealer ermac
Ermac family
ermac

Ermac2 payload 1 IoCs

resource	yara_rule
behavioral3/memory/4505-0.dex	family_ermac2

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

Loads dropped Dex/Jar 1 TTPs 1 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/user/0/com.tocagesucivoya.majo/app_rotate/wWqUWlJ.json	4505	com.tocagesucivoya.majo

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

Retrieves information displayed on the phone screen using AccessibilityService.

collection defense_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.findAccessibilityNodeInfoByAccessibilityId	com.tocagesucivoya.majo
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.tocagesucivoya.majo
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.tocagesucivoya.majo

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.tocagesucivoya.majo

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

description	ioc	Process
Framework service call	android.app.IActivityManager.getRunningAppProcesses	com.tocagesucivoya.majo

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.tocagesucivoya.majo

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.

defense_evasion persistence

Foreground Persistence

T1541

description	ioc	Process
Framework service call	android.app.IActivityManager.setServiceForeground	com.tocagesucivoya.majo

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

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tocagesucivoya.majo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tocagesucivoya.majo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tocagesucivoya.majo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tocagesucivoya.majo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tocagesucivoya.majo

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.tocagesucivoya.majo

Queries the mobile country code (MCC) 1 TTPs 1 IoCs

discovery

System Network Configuration Discovery

T1422

description	ioc	Process
Framework service call	com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone	com.tocagesucivoya.majo

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.tocagesucivoya.majo

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.tocagesucivoya.majo

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.tocagesucivoya.majo

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.tocagesucivoya.majo

com.tocagesucivoya.majo
1⤵
- Loads dropped Dex/Jar
- 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
- Performs UI accessibility actions on behalf of the user
- Queries information about the current Wi-Fi connection
- Queries the mobile country code (MCC)
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4505

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

T1603

Persistence

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

Virtualization/Sandbox Evasion

T1633

System Checks

T1633.001

Credential Access

Clipboard Data

T1414

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Discovery

Process Discovery

T1424

Software Discovery

T1418

Security Software Discovery

T1418.001

System Information Discovery

T1426

System Network Configuration Discovery

T1422

System Network Connections Discovery

T1421

Lateral Movement

Collection

Clipboard Data

T1414

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Screen Capture

T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Data Manipulation

T1641

Transmitted Data Manipulation

T1641.001

Input Injection

T1516

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Downloads

/data/user/0/com.tocagesucivoya.majo/app_rotate/oat/wWqUWlJ.json.cur.prof

Filesize
2KB

MD5
5bc8f7412b1cd9e014c6c131d212f06b

SHA1
3287dbe1b64b76adc5a0a454e48471693916a7d0

SHA256
0352b82574e1183c45f178cb550340659e93b08baa61a494399181367ed0007e

SHA512
117dd598e96f766c1db272ccafeb67fd175e04c3e6a822e55ddfb8761cde9fbddaec3467d18eabc07fc21ab11a0845112387b8f259fdbf51ac60cfec2d482df9

Download Submit
/data/user/0/com.tocagesucivoya.majo/app_rotate/wWqUWlJ.json

Filesize
691KB

MD5
af16d4c3922521886b2955d6b800e291

SHA1
e576e82f7323e7b0d5330fed95f0fb28d0ef3069

SHA256
ae7478e56436ae61d114646df78105c6da7ed8ae4c53e5dbc71575820c32b2d4

SHA512
e4e853de6d9368e63bb85e484aaabb0c55e981a98ba2b4ddec2a9d0b7a430806d959f7e2e90e94b486c0e396af827b403ee713567c75528f59acc350b5458d37

Download Submit
/data/user/0/com.tocagesucivoya.majo/app_rotate/wWqUWlJ.json

Filesize
691KB

MD5
417e8c6eadbd84bc5a150a13e9fb1dae

SHA1
5f367676dd413ae3c554816054241c0e51de53d4

SHA256
4b77eefd513318eb812d8b45bb0de0850a303de2705d59c470b68e083497bd8e

SHA512
3ff5c9aaf5132186244381cfcdd968b63d4877161425d922ef8978a5e8d1aa51b044bba4cbd6e05571f6a59ec34e676bf487132f45dd9f4d1315c8f6046ea69c

Download Submit
/data/user/0/com.tocagesucivoya.majo/app_rotate/wWqUWlJ.json

Filesize
1.5MB

MD5
cc3f7e15e6ecf198c853329e3de827af

SHA1
bd019e147a78453338cd55cafb54ede8af9d054a

SHA256
5df7d54bac53e838adaa098a5572e08d97d2af20832ca5a06bceb3bd1f7de306

SHA512
f75f96e217fced75326a740d39b97e24d1c30ac6b33edad39d77e34aba6a7b742d1c07d73b90e528b74e310f5893598093fb8140ce8f438daec897e2099d258f

Download Submit
/data/user/0/com.tocagesucivoya.majo/no_backup/androidx.work.workdb

Filesize
4KB

MD5
7e858c4054eb00fcddc653a04e5cd1c6

SHA1
2e056bf31a8d78df136f02a62afeeca77f4faccf

SHA256
9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad

SHA512
d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

Download Submit
/data/user/0/com.tocagesucivoya.majo/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
b983aa7c37e0078d7da156e1ae8d440c

SHA1
6a4ee096a728cf281819a78a22bd9f5627b11c63

SHA256
d7669789bff40f59b8ed8365f2c8f925cc46b51dc2a087480f5c708f8bbcfe8c

SHA512
fee5252ebec7b33ae11daa0e5a08c14f67705b86f4e8aff1f2f0e4a20af6f75a7539a5ecec0a2a5dba541206c4a363af0fe37b52faabd48c72337dd9f22e474a

Download Submit
/data/user/0/com.tocagesucivoya.majo/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/user/0/com.tocagesucivoya.majo/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
17fecaed4891c41f5a8ed6576d9ed7a4

SHA1
ffeb0a4fb88983ebeb714258bb869be858700c64

SHA256
94d069404236c5c12dc4401227023ae1cb6c7da5ec8d38ee6d1bbc1c5137540a

SHA512
fdd05c9bf1f0657e07783ba2c70bea3105aaa375f92de60cda929c1633dda1cb95d89a387e8d2200747a66e3331842cc960d928a349e6b6b19c88187e1df65b0

Download Submit
/data/user/0/com.tocagesucivoya.majo/no_backup/androidx.work.workdb-wal

Filesize
108KB

MD5
a9effd235e1ffc5330be595003bbe860

SHA1
c93b3f1d417568fc240cb955c93fc7aa48015ebb

SHA256
b6a87007a577eb05b08c49fd1e767bf7a283cba5726dfeb6061332822c79e42a

SHA512
db0d8ac6a5e6b75e249ac685796cd6d843a0b941b9c309a042459c876d9a4370c94811c43858f96e7c03f26a17b851dc232c9f2c55c1fa9b35b607872b623912

Download Submit
/data/user/0/com.tocagesucivoya.majo/no_backup/androidx.work.workdb-wal

Filesize
173KB

MD5
d723057974920aa2bceb3b30a572735c

SHA1
8b2574c35c7ac795f9baa46c46d79a383e105913

SHA256
7aa6b6116bf9f24192f0f4f042412b51b8c30cdb60b06827d4f0610212d2bd8b

SHA512
aebf660f4d9216e808892da2122f7db9f4b1b278e506e6d765fa63433ef45a743e3f5ee86213ed3cb03f46d1139cc8e24f59d4ddba5363ea9b8a13f3482059f2

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads