hook | 820e9e9c1f7f6148c94e647a175ede95e41efdd882fd4b0177ad443ce8b95e04

General

Target
820e9e9c1f7f6148c94e647a175ede95e41efdd882fd4b0177ad443ce8b95e04.apk
Size 3.3MB
Sample240419-nqnphaae89
SHA256 820e9e9c1f7f6148c94e647a175ede95e41efdd882fd4b0177ad443ce8b95e04
MD5 fed46ad35d269dd4fff2e000143b5a62
SHA1 ab44009839aa65c28652262ffc206d0ffed8f2c8
SHA512 9b0c177839f9030ab2e71d8bb961f239ce87326f420cf179cd4553023d740917f3cdca4378a5922f48155dec68575beda230c246989f2fbab76ae729499cdbf8
SSDEEP 98304:Oc9piReR5PEVJxhHsqY8bkY42LlS/aeHELijWG:leoRe1Zk925b+jWG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

hook collection discovery evasion infostealer persistence rat stealth trojan

Malware Config

Extracted

Family

hook

C2

http://163.5.169.19:3434

AES_key

Signatures

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

Makes use of the framework's Accessibility service 2 TTPs 3 IoCs

Retrieves information displayed on the phone screen using AccessibilityService.

collection evasion

Input Injection

T1516

Screen Capture

T1513

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.tencent.mm
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.tencent.mm
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.tencent.mm

Removes its main activity from the application launcher 1 TTPs 1 IoCs

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
4438	com.tencent.mm

Checks CPU information 2 TTPs 1 IoCs

Checks CPU information which indicate if the system is an emulator.

evasion discovery

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/cpuinfo	com.tencent.mm

Checks memory information 2 TTPs 1 IoCs

Checks memory information which indicate if the system is an emulator.

evasion discovery

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/meminfo	com.tencent.mm

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.tencent.mm

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.tencent.mm

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.tencent.mm

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.tencent.mm

Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs

evasion

User Evasion

T1628.002

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.tencent.mm

Uses Crypto APIs (Might try to encrypt user data) 1 IoCs

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.tencent.mm

com.tencent.mm
1⤵
- Makes use of the framework's Accessibility service
- Removes its main activity from the application launcher
- Checks CPU information
- Checks memory information
- Makes use of the framework's foreground persistence service
- Queries information about running processes on the device.
- Queries information about the current Wi-Fi connection.
- Acquires the wake lock
- Requests disabling of battery optimizations (often used to enable hiding in the background).
- Uses Crypto APIs (Might try to encrypt user data)
PID:4438

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Foreground Persistence

1

T1541

Privilege Escalation

Defense Evasion

Foreground Persistence

1

T1541

Hide Artifacts

2

T1628

Suppress Application Icon

1

T1628.001

User Evasion

Input Injection

Virtualization/Sandbox Evasion

2

T1633

System Checks

2

T1633.001

Credential Access

Discovery

Process Discovery

1

T1424

System Information Discovery

2

T1426

System Network Configuration Discovery

1

T1422

System Network Connections Discovery

1

T1421

Lateral Movement

Collection

Screen Capture

1

T1513

Command and Control

Exfiltration

Impact

Input Injection

1

T1516

Replay Monitor

Loading Replay Monitor...

Downloads

androidx.work.workdb

Path /data/user/0/com.tencent.mm/no_backup/androidx.work.workdb
Size 4KB
SHA256 9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad
MD5 7e858c4054eb00fcddc653a04e5cd1c6
SHA1 2e056bf31a8d78df136f02a62afeeca77f4faccf
SHA512 d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb
MD5 SHA1 SHA512

Submit Download

androidx.work.workdb-journal

Path /data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-journal
Size 512B
SHA256 169dda34b2a1a792939ff495ab9d69a33cacd8bd6354ff95945769ce07d92e44
MD5 d71db66b7e8b07ad6effa62bc7391fb5
SHA1 5c8ad1d988dc86c947bb560db49eb006edf4aef9
SHA512 690789f60a012c92cff34ba296ec27c862cc3b66c47c945bda36f51a7620762b781f7844d753588023d133be3aea78febd3c89a9012729c8ace5525ed0b8c46b
MD5 SHA1 SHA512

Submit Download

androidx.work.workdb-shm

Path /data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-shm
Size 32KB
SHA256 c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479
MD5 bb7df04e1b0a2570657527a7e108ae23
SHA1 5188431849b4613152fd7bdba6a3ff0a4fd6424b
SHA512 768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012
SSDEEP 3::
MD5 SHA1 SHA512 SSDEEP

Submit Download

androidx.work.workdb-wal

Path /data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-wal
Size 16KB
SHA256 d55c8e02cedb44b2054d5be6a7ec5daaf01853e1da0209074d856a679eb7716b
MD5 fc3832e0c5236f68f81b5f08c1a951d5
SHA1 1e7e01380453d2f8e25195295ceaca6c2e9676b3
SHA512 641f1373cae25841097e791be5712217c9c0505a9897d245b003d85dbb6e9efa003572341eb531583f38d5bf8fd51cf406f070a8bb1f518eb06a14dadf9b9d5c
SSDEEP 6:K1wMlcV99FZde/kPlOERX4PBX4ogLugMBX4suuK+/vn+HAktZyldzkF9+Ow2:K1w3VrzdeWRmBEyPbP/vnfMXD+Ow2
MD5 SHA1 SHA512 SSDEEP

Submit Download

androidx.work.workdb-wal

Path /data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-wal
Size 108KB
SHA256 15853c949d05fc19c450c7c3c2285d19965c3d2e794532ae3aeaa09447e406c0
MD5 548af3b7c32d973ca44332cb2808d2c6
SHA1 a68f8eaadcbb61df0a783fbd9cf8d74f65c38e5b
SHA512 330bce3f364fca99d967cf4735b94e2d5b49c05288973ca531fc0c72104139328bd78398ac14ce95cab0e374e811a8675fa53edbf823128f27919c4ce55193a6
SSDEEP 96:ykZ6+hdjnHtDRMpf8UzS5+TD8q0ExPWdud:ZVdjnHt9Mpf8UzS5+TD8q0E5WS
MD5 SHA1 SHA512 SSDEEP

Submit Download

androidx.work.workdb-wal

Path /data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-wal
Size 173KB
SHA256 5ae4804282d98a4b94235f38e36f75aecf6e0a12b43e3167fb6ff9e035fecb5f
MD5 5516ce15470cd4f9c5ade42bdc29ace5
SHA1 d25c22b08d6b4a03697ce082f81a57177b6f72a1
SHA512 83449514986a9882dd46b1e5a723598f53dd7fc00aecf4c2954716ae78dceef7e7e38ef80417933e81e44e5ddbbd59bd0d7ae8fa6cc537c0696616d4c282e9a8
SSDEEP 24:MwiYf9mxenhh5Gh4pi3tyneiiYVhGD/jlemq:MXYxn5G9keNYeq
MD5 SHA1 SHA512 SSDEEP

Submit Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads