ermac | ef94d055f7d3d318a2d33dcdaa2182fdd7a30c0ca0f9235e20dc6b8211aed14e

Analysis

max time kernel
148s
max time network
155s
platform
android-11_x64
resource
android-x64-arm64-20240910-en
resource tags

arch:armarch:arm64arch:x64arch:x86image:android-x64-arm64-20240910-enlocale:en-usos:android-11-x64system
submitted
13-11-2024 22:03

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General

Target

ef94d055f7d3d318a2d33dcdaa2182fdd7a30c0ca0f9235e20dc6b8211aed14e.apk
Size

4.7MB
MD5

00128fa75ad5dd22f77b0512d3587601
SHA1

8693752601503b77a56d0520569ded251b7348c2
SHA256

ef94d055f7d3d318a2d33dcdaa2182fdd7a30c0ca0f9235e20dc6b8211aed14e
SHA512

92af7968be606a7749b069ee5b9d023569ae82e9af5de58ff08fa0b2681ef445575405f05d46d62ae77ab10751701d791de764dd6f6738e29f1b41064473fa76
SSDEEP

98304:49E62rVCnNf4UlNQ4g/Ho4BAqh3sRHF/T30uqTddAVQrTkJDuJI6lzed+hQrEsCl:KU4g/IJdJim6ls+hQ4zf

Score

10^/10

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

Malware Config

Extracted

Family

ermac

http://ytgrfesrjhgf.pro; http://ytgrfesrjhgftf.pro; http://ytgrfesrjhgftfuyfq.pro; http://ytgrfesrjhgftfuyfqsre.pro; http://ytgrfesrjhgftfuyfqsrey.pro

http://ytgrfesrjhgf.pro

AES_key

Extracted

Family

hook

http://ytgrfesrjhgf.pro; http://ytgrfesrjhgftf.pro; http://ytgrfesrjhgftfuyfq.pro; http://ytgrfesrjhgftfuyfqsre.pro; http://ytgrfesrjhgftfuyfqsrey.pro

http://ytgrfesrjhgf.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

Processes:

resource	yara_rule
/data/user/0/com.mokusubitivu.zexajo/app_suggest/qOJs.json	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

Processes:

com.mokusubitivu.zexajo

ioc pid process

/data/user/0/com.mokusubitivu.zexajo/app_suggest/qOJs.json 4750 com.mokusubitivu.zexajo

ioc	pid	process
/data/user/0/com.mokusubitivu.zexajo/app_suggest/qOJs.json	4750	com.mokusubitivu.zexajo

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

Processes:

com.mokusubitivu.zexajo

description	ioc	process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.mokusubitivu.zexajo
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.mokusubitivu.zexajo
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.mokusubitivu.zexajo

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

Processes:

com.mokusubitivu.zexajo

description ioc process

Framework service call android.content.IClipboard.addPrimaryClipChangedListener com.mokusubitivu.zexajo
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

Processes:

com.mokusubitivu.zexajo

description ioc process

Framework service call android.app.IActivityManager.getRunningAppProcesses com.mokusubitivu.zexajo
Queries the phone number (MSISDN for GSM devices) 1 TTPs
discovery

System Network Configuration Discovery
T1422
Acquires the wake lock 1 IoCs

Processes:

com.mokusubitivu.zexajo

description ioc process

Framework service call android.os.IPowerManager.acquireWakeLock com.mokusubitivu.zexajo
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

Processes:

com.mokusubitivu.zexajo

description ioc process

Framework service call android.app.IActivityManager.setServiceForeground com.mokusubitivu.zexajo

description	ioc	process
Framework service call	android.content.IClipboard.addPrimaryClipChangedListener	com.mokusubitivu.zexajo

description	ioc	process
Framework service call	android.app.IActivityManager.getRunningAppProcesses	com.mokusubitivu.zexajo

description	ioc	process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.mokusubitivu.zexajo

description	ioc	process
Framework service call	android.app.IActivityManager.setServiceForeground	com.mokusubitivu.zexajo

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

Processes:

com.mokusubitivu.zexajo

ioc	process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.mokusubitivu.zexajo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.mokusubitivu.zexajo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.mokusubitivu.zexajo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.mokusubitivu.zexajo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.mokusubitivu.zexajo

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

Processes:

com.mokusubitivu.zexajo

description ioc process

Framework service call android.net.wifi.IWifiManager.getConnectionInfo com.mokusubitivu.zexajo
Queries the mobile country code (MCC) 1 TTPs 1 IoCs
discovery

System Network Configuration Discovery
T1422

Processes:

com.mokusubitivu.zexajo

description ioc process

Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone com.mokusubitivu.zexajo
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

Processes:

com.mokusubitivu.zexajo

description ioc process

Framework service call android.app.job.IJobScheduler.schedule com.mokusubitivu.zexajo
Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
impact

Data Encrypted for Impact
T1471

Processes:

com.mokusubitivu.zexajo

description ioc process

Framework API call javax.crypto.Cipher.doFinal com.mokusubitivu.zexajo
Checks CPU information 2 TTPs 1 IoCs

System Checks
T1633.001

System Information Discovery
T1426

Processes:

com.mokusubitivu.zexajo

description ioc process

File opened for read /proc/cpuinfo com.mokusubitivu.zexajo
Checks memory information 2 TTPs 1 IoCs

System Checks
T1633.001

System Information Discovery
T1426

Processes:

com.mokusubitivu.zexajo

description ioc process

File opened for read /proc/meminfo com.mokusubitivu.zexajo

description	ioc	process
Framework service call	android.net.wifi.IWifiManager.getConnectionInfo	com.mokusubitivu.zexajo

description	ioc	process
Framework service call	com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone	com.mokusubitivu.zexajo

description	ioc	process
Framework service call	android.app.job.IJobScheduler.schedule	com.mokusubitivu.zexajo

description	ioc	process
Framework API call	javax.crypto.Cipher.doFinal	com.mokusubitivu.zexajo

description	ioc	process
File opened for read	/proc/cpuinfo	com.mokusubitivu.zexajo

description	ioc	process
File opened for read	/proc/meminfo	com.mokusubitivu.zexajo

com.mokusubitivu.zexajo
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:4750

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

Replay Monitor

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Downloads

/data/user/0/com.mokusubitivu.zexajo/app_suggest/oat/qOJs.json.cur.prof

Filesize
2KB

MD5
100f8fbf3d00c370e30601a20f6d2e1c

SHA1
ad58147e5f6f30ec36f6f4c1d17ec72098b6a432

SHA256
aa686bfe455f86768a6985689da649b76b7349466efb377c4f4ea7a121d80db5

SHA512
dc8f5ca6099436bd8223b70a19601f1d5c366df28d28c816f98b156131c97f3db4e449e28cbc2e8bde6ac9e2dc1502b50d6a84c3b65f42fa55a30ce60267a7d0

Download Submit
/data/user/0/com.mokusubitivu.zexajo/app_suggest/qOJs.json

Filesize
691KB

MD5
34eda891de0eddcbd0f2c5cd6b70a436

SHA1
8e2bd325df089df52534e4c75d9aadfe0c5bdca8

SHA256
92e59e4cf96282d1b450d22c84dec9b10a9d8ee803a4a6255dd3dbab6adb2bb8

SHA512
4b26c0ffdb2cd2185db677bb2e8898bf01c372633be44a5f736bbcc171aa1fc4e1ab1dd6c734771df69260ea49cc10813bb801369ae9284d259113da1ac3eacb

Download Submit
/data/user/0/com.mokusubitivu.zexajo/app_suggest/qOJs.json

Filesize
691KB

MD5
b0cf3eb44021e9ff24a9aff9a6d618e4

SHA1
1e8567b94285305637b424289298e9e8103bb68c

SHA256
1a9be3cbf38b4306df2a808a52ce709be880db6df93e7a58b240be193f60629d

SHA512
f28ed9aa4f8de4221e8bfadfa3a4d09616c00066518d252e70b453f40e1ccbf0a85eb59f09cfa97954725b48182b2cb891f5852aa237d1cfee650c7199cf24c7

Download Submit
/data/user/0/com.mokusubitivu.zexajo/app_suggest/qOJs.json

Filesize
1.5MB

MD5
56f384576200bda9fe2fcf7a0fe0ff1f

SHA1
343e91224ef03dc6b323ade4dae19b36fe982a82

SHA256
20345681cc4e1b9e271a70f1db9320256e7e905bd60a0bf583f3af0e1adf3456

SHA512
4d023dd3f639dec6a6e8f2d2f4d918b942bcd33aeac2917a7610ed8a416917407e9732407b2e74af9498080695e2dc26ef1604a6688dc4c3ff5ec92b363c854f

Download Submit
/data/user/0/com.mokusubitivu.zexajo/no_backup/androidx.work.workdb

Filesize
4KB

MD5
7e858c4054eb00fcddc653a04e5cd1c6

SHA1
2e056bf31a8d78df136f02a62afeeca77f4faccf

SHA256
9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad

SHA512
d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

Download Submit
/data/user/0/com.mokusubitivu.zexajo/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
a9a29165f362f9a6e4ab709b955b9007

SHA1
122a925e8ee746257950390b85b8a8c8e4685c22

SHA256
3d11b4ba3076deb09354a7805c246f16f4384a907ad0d5a63114fad2d9048d1f

SHA512
c196473221178415670fa6c45ab0086469193ca9c596ee21dccb160674dc314a62739d54eb2735265d6c119a6d95dac0dbeea21df7a3e9dbb293ebc81547794e

Download Submit
/data/user/0/com.mokusubitivu.zexajo/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/user/0/com.mokusubitivu.zexajo/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
7d00f4ae6bd3d57ca67e049532bef1da

SHA1
72fe4dffe189bb5ea92c3dc8c72096547a0afbf1

SHA256
55859505b1bd82422d3d9179cb6310c10520cd2b696977a13dc6bad06fdf8cca

SHA512
b8cea9b20f20f32c02bd5fb2608234737f6ba61b338ba9c626ac3229bbc6ee8c6ecf17d31ae8c9169f24d858f5a98cab9a337b037a2bfb04049685a0dcd400e1

Download Submit
/data/user/0/com.mokusubitivu.zexajo/no_backup/androidx.work.workdb-wal

Filesize
108KB

MD5
35640acc7cca4764e6d41bf5c7fa984f

SHA1
c5668129e2b26b182618e9fd39d754ce429e8912

SHA256
f389914fa2c9559ae27223a59f71dfe2e97d8c1e2c2564d9403a47bf139c7309

SHA512
3a4d2d3fce7fea2a12c0ae46e35b69e55134d7dcc89fbcfed201c5674f0b12969706f6a0becf1fc58cfae87025b4efaef6a6f48ccaa74bcbdce1f3b030f91f17

Download Submit
/data/user/0/com.mokusubitivu.zexajo/no_backup/androidx.work.workdb-wal

Filesize
173KB

MD5
33077f73eb9c0b413c12002105683b57

SHA1
468001769b474989a4beb989317ee66848902b57

SHA256
1b87cd20810caba040a81b6d0476ab8f28e8758c19f939578735d74f83f350df

SHA512
0d4567b7bc5ec0cff91f0e88e7951865be6d96faa1acd800d71e051dc1a4e9cb418c8548d36f9bb14e38952023faddf82ec6bbb602b371c7fe9a107dfed8f02d

Download Submit