ermac | 7933686711fc3680b5f862a3502b305222fa1f35b0a8c0ebae4d9e2eef3c584c

Analysis

max time kernel
179s
max time network
188s
platform
android_x64
resource
android-x64-arm64-20240624-en
resource tags

androidarch:armarch:arm64arch:x64arch:x86image:android-x64-arm64-20240624-enlocale:en-usos:android-11-x64system
submitted
02-08-2024 22:03

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General

Target

7933686711fc3680b5f862a3502b305222fa1f35b0a8c0ebae4d9e2eef3c584c.apk
Size

2.5MB
MD5

a569a01fc6f8d426236187b2314aa3f9
SHA1

4f33c0004ea889f8a55647c75b0132c05e00d22f
SHA256

7933686711fc3680b5f862a3502b305222fa1f35b0a8c0ebae4d9e2eef3c584c
SHA512

f0bc892c71382d42953a754d7542488c70e02238b8f46eb77ee7a1fb0f4033c5d928f10b64e0a92f9a61abfddda71c0962d289f150e243cfa32c817742396abf
SSDEEP

49152:aayZAxBUKQ42Y3B+pB6qgSh93WaosfKGn+AoT/jVyHL44dT2P:aayePUKQ4/ApBT9GGf5ncjVOk4da

Score

10^/10

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

Malware Config

Extracted

Family

ermac

http://45.66.231.11:3434

AES_key

Extracted

Family

hook

http://45.66.231.11:3434

AES_key

Signatures

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

Ermac2 payload 1 IoCs

resource	yara_rule
behavioral3/memory/4486-0.dex	family_ermac2

Hook
Hook is an Android malware that is based on Ermac with RAT capabilities.
rat trojan infostealer 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.kakao.talk/app_habit/eM.json	4486	com.kakao.talk

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.kakao.talk
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.kakao.talk
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.kakao.talk

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.kakao.talk

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.kakao.talk

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.kakao.talk

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.kakao.talk

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.kakao.talk

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.kakao.talk

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.kakao.talk

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.kakao.talk

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.kakao.talk

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.kakao.talk

com.kakao.talk
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
- 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:4486

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

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/data/com.kakao.talk/app_habit/eM.json

Filesize
799KB

MD5
2566ed2a38c03e21f875354c60f3be6e

SHA1
95da10d4c7ee44aaa7ac367ffbbc6463a1477e92

SHA256
9eab0b7ba737de42c39b68adb86e653f2e42cb417f5221426860133e33c2bc2b

SHA512
b9c61b12ca8ac88a7d53246453acaf70c7314e13f49f1d0636cda46662fa4fd54c915a0a8fa99b8c6c6a913cf60cf6edaf94e44a7cf160f30a3e3932cc5b24f6

Download Submit
/data/data/com.kakao.talk/app_habit/eM.json

Filesize
799KB

MD5
1e00e7edcd838a5a700f183559e12dec

SHA1
ac4baca009cf61dc812b3205c17c081d5e25cccc

SHA256
d339cbd7d1bd47914858be08e624780b267eb5187b48700a6841dd634492712c

SHA512
034eeb96caab8c98f993bce721e73f985e43df8b902117b8938e16d9e4c67cb3cd6c413d94529fd3e63e49a1c807383f44da89dc59c67b5e21543897a3ef97ae

Download Submit
/data/data/com.kakao.talk/app_habit/oat/eM.json.cur.prof

Filesize
2KB

MD5
30817cb9aaf96ccc9cf29e66bd6deee8

SHA1
5f64b39952d0243f8a6c0e51f40df404412c8169

SHA256
96cfab7bb79d7b07df159f32dc6f1603df1a9048658ad6ac2000937f17127a1b

SHA512
870e6fe058cd6b1e5245db9889ee52adf0f8ece82455746dce294c83e34aebfa0629055bc8ff1c08381c0e919eec659fbf34ae283dc3247571319ca81982f9be

Download Submit
/data/data/com.kakao.talk/no_backup/androidx.work.workdb

Filesize
4KB

MD5
7e858c4054eb00fcddc653a04e5cd1c6

SHA1
2e056bf31a8d78df136f02a62afeeca77f4faccf

SHA256
9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad

SHA512
d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

Download Submit
/data/data/com.kakao.talk/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
a3e2f562eae53989bf55200505b1ae5d

SHA1
a50483dc652ccd112cd5f8f15ac820fcade1cbb1

SHA256
b8a22e2cb0889de068ae2ad731f7be22e88eef9c90016b4372d89cf15ea46afe

SHA512
50dcd5c9d7a048e2027db551c7f8456b619f5dab36ccc2ff19ccf57f1bbd29fa88e3e09debbfc3586ed5c59c336a4808851f98ae0a391fb2b33d4650e4367c8d

Download Submit
/data/data/com.kakao.talk/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/data/com.kakao.talk/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
d1bff8b923499b83efbd8a5dca3d9954

SHA1
40039277424195ed2ae8c39167614ed70ded7e1a

SHA256
e7695a62294e1ccd3cf6d3a2ca155c838faae9873c9445f9d172d1db9a7e313c

SHA512
3b5bc9e39ec5f58d450f8b60967ea54a81d3e61edf5c2456d849e85ea78bde21389c959caf1ed397a8412b2f010bda18ae96d1644abb30c82d261cf0b7d826a2

Download Submit
/data/data/com.kakao.talk/no_backup/androidx.work.workdb-wal

Filesize
108KB

MD5
ea89bfe956721f2838b975a30dc99750

SHA1
f1f4c552885f053ed83389fb874cff12c50a0ff3

SHA256
71f93b7e08d2ac4059a5b383175dc47ee5c518fca2e51bfee78ccb5d6137803e

SHA512
add7985a47893150202842022bc3ccb4a6b3c6061d430ece8e0c25f7bf90281250d03f03947ab06f634050f16486b7e2fde37485c489f19a3103657f8af9442c

Download Submit
/data/data/com.kakao.talk/no_backup/androidx.work.workdb-wal

Filesize
173KB

MD5
8f8f30ef730d10c128dd4b3f379d1119

SHA1
e439c14a56068b0aa2a14a9c5b7e61979a857528

SHA256
e8c7a407fa42a790b749fe59d09399e44c4e39799ae930af2546402dada1c8b0

SHA512
cf5d1ec1608e88c67958e471c50bbff0ff9d4adbfac120144114e241e7b1775950898503e442133121495dbc47ae8b8aa66a03d41b4bcc6802832f0757e5adf0

Download Submit
/data/user/0/com.kakao.talk/app_habit/eM.json

Filesize
1.6MB

MD5
2d2dfb668a71da2c6bf0067e53da9d49

SHA1
4f50d92424d052c3fbe9ddec343d19bfe59a8ba8

SHA256
dd3d706fb16260c8d735bafb6f05a84ad4d9f1ae2632d7625a648327f189de42

SHA512
771d307de6164cc25088b603ef5281fc3375ebc5d31aa3bf6a6bdc7d3e18bca8c54dc6c4f935eef8b1c3623a21c08d6951e62e027fbb8795559819eecaebc48d

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads