ermac | 4fb51747475530f32cf31ce7f39de9767af66a3877342b034f440463b4d51158

Analysis

max time kernel
136s
max time network
155s
platform
android_x86
resource
android-x86-arm-20240624-en
resource tags

androidarch:armarch:x86image:android-x86-arm-20240624-enlocale:en-usos:android-9-x86system
submitted
06-12-2024 22:00

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General

Target

4fb51747475530f32cf31ce7f39de9767af66a3877342b034f440463b4d51158.apk
Size

3.9MB
MD5

c1c4c11da3883b7c06a03783a82750a7
SHA1

f8fd5d0e62604b33e813da1eebee8632b17aa269
SHA256

4fb51747475530f32cf31ce7f39de9767af66a3877342b034f440463b4d51158
SHA512

23b4de8b1fdcfa2a6a58b168944ce9fed618e8910fccf4a66fb89cdbca14cfba432b99601a450b66f9f2874806b471e7cab6bbbec217fa2dc6b0145928c1e985
SSDEEP

98304:n8ZO8+p1rQL5zPCO2UFXbzCz+/Gd/JdEqFbh89Q/:w3+pVQZEyXbCeGRwqhhcQ/

Score

10^/10

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

Malware Config

Extracted

Family

ermac

http://154.216.19.93

AES_key

Extracted

Family

hook

http://154.216.19.93

AES_key

Signatures

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

Ermac2 payload 2 IoCs

resource	yara_rule
behavioral1/memory/4253-0.dex	family_ermac2
behavioral1/memory/4226-0.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 2 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/user/0/com.kahveonay.marka/app_orient/wR.json	4253	/system/bin/dex2oat --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --dex-file=/data/user/0/com.kahveonay.marka/app_orient/wR.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.kahveonay.marka/app_orient/oat/x86/wR.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.kahveonay.marka/app_orient/wR.json	4226	com.kahveonay.marka

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

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.kahveonay.marka
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.kahveonay.marka
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.kahveonay.marka

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.kahveonay.marka

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.kahveonay.marka

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

description	ioc	Process
Framework service call	android.app.IActivityManager.setServiceForeground	com.kahveonay.marka

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.kahveonay.marka
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.kahveonay.marka
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.kahveonay.marka
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.kahveonay.marka
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.kahveonay.marka

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.kahveonay.marka

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.kahveonay.marka

Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs

persistence

Broadcast Receivers

T1624.001

description	ioc	Process
Framework service call	android.app.IActivityManager.registerReceiver	com.kahveonay.marka

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.kahveonay.marka

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.kahveonay.marka

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.kahveonay.marka

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.kahveonay.marka

com.kahveonay.marka
1⤵
- Loads dropped Dex/Jar
- Makes use of the framework's Accessibility service
- 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)
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4226
- /system/bin/dex2oat --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --dex-file=/data/user/0/com.kahveonay.marka/app_orient/wR.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.kahveonay.marka/app_orient/oat/x86/wR.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4253

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

T1603

Persistence

Event Triggered Execution

T1624

Broadcast Receivers

T1624.001

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

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

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Screen Capture

T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Input Injection

T1516

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Downloads

/data/data/com.kahveonay.marka/app_orient/oat/wR.json.cur.prof

Filesize
2KB

MD5
e710eb12213c9fa9a8cd6b04cde2ff01

SHA1
f229f8c84b55225f670e7f54a1826c7a0f70efa9

SHA256
4f28d65b65cae2f47b5970b93468b7ade2dfb20bf9de505cecacea610914c2ca

SHA512
47598dd7b9cf27ad8a6ae07c780cd186911f4d80beb3be31d7a6cfb4d6debe14cd63d41753be710a28b7b343e1ba1de77c9cb46c206b9036fd4a90335f262c0c

Download Submit
/data/data/com.kahveonay.marka/app_orient/wR.json

Filesize
736KB

MD5
8f5252d74c04ece405cdfea896983624

SHA1
64362583c15222ae8bc070e60036b19bfb83ad17

SHA256
49c397e9e62361b35447383e5a7ad5fbb638d5f35b0b1533d5b727112314f99d

SHA512
34d2a2deb8cd8c4778431c15de003b7fabff45062234609f69b06b4505efc067dc0eb5040d567faac829bc0b2101b8848a46d380b09268baeb5116022aa9dff3

Download Submit
/data/data/com.kahveonay.marka/app_orient/wR.json

Filesize
736KB

MD5
bbe3bcc975ba70472c7922654d8eb480

SHA1
fcb503d93adbe0c16b4a4ad04c51413faf84aa77

SHA256
68b230c4df3137c663571bd7f86182d6e9e2f4e6b1fc19243cf56fd07d68ce93

SHA512
2b382568a3e3eeb35f07a736851e3983232a8beb32090af8f4d2f46310d164dfcd701c6b1a27d2d60913ef4b5f15dcfb7e1b620cf02057ee4881b2caa87de458

Download Submit
/data/data/com.kahveonay.marka/no_backup/androidx.work.workdb

Filesize
4KB

MD5
f2b4b0190b9f384ca885f0c8c9b14700

SHA1
934ff2646757b5b6e7f20f6a0aa76c7f995d9361

SHA256
0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

SHA512
ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

Download Submit
/data/data/com.kahveonay.marka/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
8b1b2ef340767634120018a815e453c7

SHA1
f5b96340682b7b115d962dfe6bf9454b36e93b71

SHA256
5f39a529b729c7812740a69d868ec2138aad74e640919d9842bbb2b4aa816f8e

SHA512
fb58e6856bd32dc219db0cbd5432c0dce9d7daf471395bed2aedcbbbcaa03d26b2396420bb9ca231c6c637c47e2a769670a96ea9f8381f8cfd087ed74d795154

Download Submit
/data/data/com.kahveonay.marka/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/data/com.kahveonay.marka/no_backup/androidx.work.workdb-wal

Filesize
108KB

MD5
83e762968703fd7678b25864bb7d1bec

SHA1
53e501658dec3580e24ea61f1d2bf18156be3b7c

SHA256
d19b39310683327a8c5e1c7c647dc1da963a4486b847316d6f5d25f8e6bff3f9

SHA512
51b85b906fbab11513e721d1b56ce592cb3301ede316a91d1019ca8091bc310dea5a3f6b60dfb4b128550edb19d1b94dbc2cee03c32da64e01d9c918a49b7278

Download Submit
/data/data/com.kahveonay.marka/no_backup/androidx.work.workdb-wal

Filesize
173KB

MD5
c1d78b8e687d3dc3a13aa917e5987c3b

SHA1
b762ca429bd07a4a4beb564cab9dd6737c98f765

SHA256
0c1c25033105f86b93c9f24970c009d7d756ae6972585f393c24ad88167d84a2

SHA512
c00c14c386dc6ac9694919d32d01b2a8020b2281a4ac781a0ba884557441d722abbc2732abca5495bee22e0d13f93d195b3cff3bca66a3b77eb80e77644efec9

Download Submit
/data/data/com.kahveonay.marka/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
85e8c3ce829c14481a67822644e09f50

SHA1
144d6dd34dfe04618f0c643c8b6c4c9583462aa9

SHA256
bd205b48819ecfe4c591b086c1a0daefe659713395d7a2dddd7e284800c56e7c

SHA512
13af29f631fff0249aa3597e5b00655d0dea30ae471f2fb54fe88f1353362a8aa1671af738c0c7ebd9ee467f73d4e434a17e63c6a99fc0e187db733c92ae78ea

Download Submit
/data/user/0/com.kahveonay.marka/app_orient/wR.json

Filesize
1.7MB

MD5
b1c17cf603459bf3cde6792f1872c25f

SHA1
245bccea23df07e47832356ffb6c240eb39f27c5

SHA256
54f16fc7e7fa880f6bc4a47d206a1d2d50dad83166f60001e225ed8c8203b533

SHA512
5b7d5e7adeed8b48f36afe7c29c0ef03493257eb87e1bb51fc109278d154e5277cf46bc8e13d296ea0fb49375c5e48a82f954a527375827777d9456152b5c455

Download Submit
/data/user/0/com.kahveonay.marka/app_orient/wR.json

Filesize
1.7MB

MD5
c16331a931011722a8a3f4110d016935

SHA1
da0ee471f9918f2f4237b2b8c4b312493e7c208c

SHA256
0ed058b78dfc76d8250582cf41a2fc98c51ec7c7ad378c820e13d8d8c732b74a

SHA512
18d9f1c63a4fce491fe10f4d8c0a735544fd0a6d26585ae7311e2daaebcbd34c8e6694285b7d637213a56a986b3dfc0de3f39986e9eded86b5d4fb47c4fdba5d

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads