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.findAccessibilityNodeInfosByViewId	com.tencent.mm
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.tencent.mm
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	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
5018	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

Reads information about phone network operator. 1 TTPs
discovery

System Network Configuration Discovery
T1422

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
- Uses Crypto APIs (Might try to encrypt user data)
PID:5018

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Foreground Persistence

1

T1541

Privilege Escalation

Defense Evasion

Foreground Persistence

1

T1541

Hide Artifacts

1

T1628

Suppress Application Icon

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

2

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

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Downloads

androidx.work.workdb

Path /data/data/com.tencent.mm/no_backup/androidx.work.workdb
Size 4KB
SHA256 0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514
MD5 f2b4b0190b9f384ca885f0c8c9b14700
SHA1 934ff2646757b5b6e7f20f6a0aa76c7f995d9361
SHA512 ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1
MD5 SHA1 SHA512

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androidx.work.workdb-journal

Path /data/data/com.tencent.mm/no_backup/androidx.work.workdb-journal
Size 512B
SHA256 ea0c50e79fa2dc9b4f0ce6b65909d22da69c00820ddffb2e40108960adaa7098
MD5 eff04d5cf560f21ae19f9aaa8f557ec6
SHA1 19494af731c6088e1ceae52a08f9c3b9f2276d8f
SHA512 8ebeb8095bcf511a8140186ca4ec096073d7e74d9d0f9bb98f6881cae85abf5aeb141cc56dc6673d737d7bef57a771e2229dda79cdfa63dda890fec58441d8fd
MD5 SHA1 SHA512

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androidx.work.workdb-shm

Path /data/data/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

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androidx.work.workdb-wal

Path /data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal
Size 16KB
SHA256 8f2117cd99b4e87aabbf16b5c9832e9b26afcdb5d8bf85ea5e18d34079e6fbdb
MD5 1a7ca69a4924bb3b79548ecef510a691
SHA1 8bdb659530e619f1107d2109d75f856e9c0a7b0e
SHA512 ee875a340b58ad6a69b9be7e2ae8a707f05e7d50952379e6f15220613cda7076688d4b3a6f0dc559336607cd8fbfdd3c20b5eda1e18d036e219e35c01ba3e832
SSDEEP 6:KyCTA0h0J9FZdrlOERX4PBX4ogLugMBX4suuK+/U7tojkvE8v+Ow2:KyzGyzdTRmBEyPbP/UKQv3+Ow2
MD5 SHA1 SHA512 SSDEEP

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androidx.work.workdb-wal

Path /data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal
Size 108KB
SHA256 8da5a0ae46e22ae9e5c9315743628a10febe3583d64a5c1f955fae2330fb4d7f
MD5 c569bd2a8a146b78ff7381c01622b867
SHA1 56c32a72f9bec0c1029fa8d1e4391f29eff8ffba
SHA512 03b99fe2143043bc2c258297c236539aeb1d25b73cb671f0de168b84ebd9a73f38c8d6bdbcfb43ef8f93eeeb291853d9d56213042c0021964fcb524372bb4c89
SSDEEP 96:+kZ6+hdjnHtDRMpf8UzS5+TD8q0ExPsXoYC3d:lVdjnHt9Mpf8UzS5+TD8q0E5YQN
MD5 SHA1 SHA512 SSDEEP

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androidx.work.workdb-wal

Path /data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal
Size 173KB
SHA256 445a799e66cf336a463c1431a925a31347c7f86882e556aef1b3d0b1991f1a08
MD5 289434499fa3e227fb29c36d254aa97a
SHA1 ca197548a532c488864d46143eb145065aee96ff
SHA512 e2e74a10b51dfca350186ce61875d222ad0ba2545f875c44eaa93afc8a8b96c7ed22e236269f328e7a1302a9aa78d878dcaa863e833df3f3d83ab0274dfd24b4
SSDEEP 12:MGkcOaOMXrfqH1tOGU/S0Ki1gklvthHCOn+5HCOKWbtBtObUX3OeC8AOIDAptOAr:I7YfjV7BDULKYuMID7t7Y1dk2CE
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads