ermac | 7933686711fc3680b5f862a3502b305222fa1f35b0a8c0ebae4d9e2eef3c584c

Analysis

max time kernel
64s
max time network
186s
platform
android_x64
resource
android-x64-20240624-en
resource tags

androidarch:x64arch:x86image:android-x64-20240624-enlocale:en-usos:android-10-x64system
submitted
02-08-2024 22:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
behavioral2/memory/5074-0.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	5074	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.findAccessibilityNodeInfosByText	com.kakao.talk
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.kakao.talk
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	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

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.kakao.talk

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)
- 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:5074

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

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

Loading Replay Monitor...

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
eaf5c2e257390169c9bceefd3c09da6d

SHA1
01652af2e5d94651df9692552350e699046c1018

SHA256
c5a1626f87131a35f9fe07446f3e2e6b8796e97eaa71e68c12975a94f7b206a1

SHA512
959963d4046c2e693ea21dc4bc9ab4b90dcb6b9b8c2d2a74212b7d2f6520e432787aea742194dc2677db6ad8f9a861505419a2b72e1eb0a4eccf850800b50e74

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

Filesize
4KB

MD5
f2b4b0190b9f384ca885f0c8c9b14700

SHA1
934ff2646757b5b6e7f20f6a0aa76c7f995d9361

SHA256
0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

SHA512
ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

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

Filesize
512B

MD5
a852efd08432a8f53f9f1b4241f0dc56

SHA1
95452cfb1cde4e8d9e42ff57706100d3a215a51f

SHA256
771b4f462e39853ff60602eb89b8105b4e534bf3be16b3b06c9b7f8ec838f989

SHA512
fa481adccaf238565576df9d3a076567d28542803e7403039999bf032ef1f298db8aab840b97ee337e8f240bf0b1ec77eaaff3ca210b503cbd6faf80d07bf29a

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
30fac8b0dde3cfcbb8775baf95022be1

SHA1
bf5cc3ba5bbf557cd044812382ce719ab0b39854

SHA256
ee466051b9e33e33352a245d62b8dd5e1135bf149880112fb7f6c6392665ea37

SHA512
8cacc5def2325e89bf22ba413f6eaca074294b403800ed56ad586559428401f7d30abf606962a709517f22ce7ad98f74afb36d008ccf760d5d71182f470b2989

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

Filesize
108KB

MD5
0fe3295b825fc8f10933d669f856b998

SHA1
e0a87af8f70070d227175a53aebf0e0edea7363e

SHA256
81021d2e946a40d92618cdca4bf7b4e816488afd789fbf4c8d55f4ab1472f4f0

SHA512
60dedf6eae20d0349e546d2dfcd1f9e484709c1a6808827783991ef303945e97a57b4557509098127645d80ae8cdd57df83e0bcf9b82408fef95a810c1eb8a7f

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

Filesize
173KB

MD5
ac5e592ef13a78fbb8413af7b92bfd4a

SHA1
4a5b670c1d8ae13341564d5633fa008edb36f98c

SHA256
76f6eae087fbe76f49127c9c6b34237ae137d9369b9b8450e18f0bff0c5d3605

SHA512
6304f5a2faade38af223baa4f7ac25319167d33fe2a4731daa9e831d30409322e3ea7608bb50f7ec0332ac9409381ea04dc9078caa51f41d50c0a0bfe0179912

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

Replay Monitor

Loading Replay Monitor...

Downloads