hook | 2d19cbdd421ebf5024a12f4380d870d127a8b9348d7ababcced56c1bb8702956

General

Target

2d19cbdd421ebf5024a12f4380d870d127a8b9348d7ababcced56c1bb8702956.apk
Size

1.5MB
MD5

b8a90d312d6d9acaa2ebcec019968126
SHA1

558dda73e42412b4bcd122557f2d4ccde8a2a0c1
SHA256

2d19cbdd421ebf5024a12f4380d870d127a8b9348d7ababcced56c1bb8702956
SHA512

3a9192cc3cdf0d7d40b3daac1cb94d5fd47dec401936ea598bb5f36c03443a42ad7ea056ce4dd451ebaec1ba4e6d36c776db9b9d111a86eaa341f3ea9f13b6bd
SSDEEP

49152:yNegqYuOhCwDsH1q5eIU/soZwnmNBIUdH:y9u4V7X2sijNzdH

Score

10^/10

hook collection credential_access discovery evasion execution impact infostealer persistence rat trojan

Malware Config

Extracted

Family

hook

C2

http://URL_CONNECTION

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

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 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 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.tencent.mm

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.tencent.mm

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.tencent.mm

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.tencent.mm

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.tencent.mm

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.tencent.mm

com.tencent.mm
1⤵
- Makes use of the framework's Accessibility service
- 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:4258

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

1

T1603

Persistence

Event Triggered Execution

1

T1624

Broadcast Receivers

1

T1624.001

Foreground Persistence

Scheduled Task/Job

Privilege Escalation

Defense Evasion

Foreground Persistence

Input Injection

Virtualization/Sandbox Evasion

2

T1633

System Checks

2

T1633.001

Credential Access

Input Capture

2

T1417

GUI Input Capture

1

T1417.002

Keylogging

1

T1417.001

Discovery

System Information Discovery

2

T1426

System Network Configuration Discovery

3

T1422

System Network Connections Discovery

1

T1421

Lateral Movement

Collection

Input Capture

2

T1417

GUI Input Capture

1

T1417.002

Keylogging

Screen Capture

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

Input Injection

Replay Monitor

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Downloads

/data/data/com.tencent.mm/no_backup/androidx.work.workdb

Filesize
4KB

MD5
f2b4b0190b9f384ca885f0c8c9b14700

SHA1
934ff2646757b5b6e7f20f6a0aa76c7f995d9361

SHA256
0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

SHA512
ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

Download Submit
/data/data/com.tencent.mm/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
1f20b0b047ee2d6866bdf4ba18e51f8c

SHA1
b8d97366c5609b4a4ea0bad227bdcdefd11bd4b5

SHA256
3670ca6ef2df6bfe9d4118aaea5fb2a4f46b1c360147bd4a2349fe55e05881b9

SHA512
3cf72bb827bba6be602f20d583a1fe98fb52d12067a0902c593adb19b3f33ffe4666c369c35c55485f072cf3d0cc68aaf8a89e5bf6ce6f72eb8d89a7a22784df

Download Submit
/data/data/com.tencent.mm/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
10d02f81e083c8c469c5699943289ea3

SHA1
394d8f189066d7ce7f36355d7ef3286e05fc8045

SHA256
e090758f7285894cf387650140b8b4c0f92f86d8e0b2ed612e1f440a1472334d

SHA512
fa70fa270d7221c18a5dd525be5c5bbc9d2f25bea808dab013b65a2e45e3e2032dbf3ffed30c0a6ca1617160f50b6795283a50e5262b3e1bcec9ba222d92da8e

Download Submit
/data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal

Filesize
112KB

MD5
dd8ac34d65ffc2b738e96dd3e130c43a

SHA1
cf24bcefb4c2eec9d484d5e75aded255f56c7094

SHA256
78e21c103a115da77c9e597da1c577af32e3a71ee6ef864dd8deff0cbda0f28d

SHA512
61210880c4cce52f1fc17e509d26168c7b5819078658ed5f41962d49a89e319b0bd6a5cf5166d1cf09aa5db58aadada048342f36ca921574c66b787e5a18cee3

Download Submit
/data/data/com.tencent.mm/no_backup/androidx.work.workdb-wal

Filesize
185KB

MD5
8d906c83c3ab5e7da1612a5811963707

SHA1
b66b23e0d86ef1327a25ad9acbe6987d3f133269

SHA256
3685b2a2e0d96260e5c39a6018d1e7543ef491e8d9155081b6d7ade3e882d736

SHA512
5bb822874dbfdfbf52f118408bd85a3532563bc79f88d2e2f01f9b930f655a044de9aa2a6a51116ba7c57a23edf04e5dc5dd7cf6e0fb9059d0e1c4b29cf81990

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads