ermac | 8dfaaecbc8ed410c8d39999b750d12fa55ff6bfbbbbef5564688da14412c4b18

Analysis

max time kernel
115s
max time network
152s
platform
android-11_x64
resource
android-x64-arm64-20240910-en
resource tags

arch:armarch:arm64arch:x64arch:x86image:android-x64-arm64-20240910-enlocale:en-usos:android-11-x64system
submitted
01/03/2025, 22:07

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General

Target

8dfaaecbc8ed410c8d39999b750d12fa55ff6bfbbbbef5564688da14412c4b18.apk
Size

3.0MB
MD5

f01c35786e239aec5acc0e4b1fdea4e0
SHA1

d9cb0d450658a3e8e6a53f511067b6ed3d6cdc83
SHA256

8dfaaecbc8ed410c8d39999b750d12fa55ff6bfbbbbef5564688da14412c4b18
SHA512

0780f5f69dcf9b7c0bd55baea0ae1e74e3a96acbf5604a192ca5859dc07ac89401ebc31a8f7b9731451093a5cc36bc9f6d9c0f30ac4dd1363de33ed9df1b67e1
SSDEEP

49152:Qxf2jfcyUCOSEd6NcqHD+xsdT0+XbVOhYVAqaf8OpY7hh0bR/GAhN8MRIuEikGcP:QxujkdLSE8NTdPbVOLfDa0b5GAhJEjWw

Score

10^/10

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

Malware Config

Extracted

Family

ermac

AES_key

Extracted

Family

hook

AES_key

Signatures

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

Ermac2 payload 1 IoCs

resource	yara_rule
behavioral3/memory/4636-0.dex	family_ermac2

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

Loads dropped Dex/Jar 1 TTPs 7 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json	4636	com.tencent.mm
[anon:dalvik-classes.dex extracted in memory from /data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json]	4636	com.tencent.mm
[anon:dalvik-classes.dex extracted in memory from /data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json]	4636	com.tencent.mm
[anon:dalvik-classes.dex extracted in memory from /data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json]	4636	com.tencent.mm
[anon:dalvik-classes.dex extracted in memory from /data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json]	4636	com.tencent.mm
[anon:dalvik-classes.dex extracted in memory from /data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json]	4636	com.tencent.mm
[anon:dalvik-classes.dex extracted in memory from /data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json]	4636	com.tencent.mm

Makes use of the framework's Accessibility service 4 TTPs 3 IoCs

Retrieves information displayed on the phone screen using AccessibilityService.

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

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.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 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.

defense_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

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.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⤵
- 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
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4636

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

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/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json

Filesize
703KB

MD5
e197d08d1cbc1361ca1c843ed7e923d6

SHA1
93b57e201f9ab3e923ce16f677ab374c70469449

SHA256
31fea604cfead93d5ee2bc6ef1392960d38a5ae07764a13401c1036f12e41ab9

SHA512
9bec1db413e164c94aea95704eb1b932f79edb877aeac82cf89a133d76a6ca6709c5e2f7823cc102768765f1265d0db16f3ac73c31ea5a7d44ec4334f56c5e5b

Download Submit
/data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json

Filesize
703KB

MD5
ae00ca236dac70399f71b6c3f01440ce

SHA1
0b6c338dfd9a471e9cc908f3daa2e392572974da

SHA256
a7998e0a77600b5aae8d7ee10322c1b8db4ebbe3a7a7a8d73e59af9439767bf1

SHA512
066c56ec9f77148ef59bc91645986619905f01c98d0990d9eed6f04b39d44429dd2ef9554d10dd57660009a4f7c5d0f96c1ec5b66972aaf742e13fdbf6a2164f

Download Submit
/data/user/0/com.tencent.mm/app_DynamicOptDex/gQw.json

Filesize
1.5MB

MD5
3e79e0d69fbc50ffafc8cd17ae5ebd82

SHA1
b6c9453499b56674b6b5bc81f3535f5800035ca4

SHA256
d00bf27b86ace39fbe639b3e024388897181c452341cac0f066b79be122c9cf4

SHA512
5c4acb3bcd4970674ed9cd7ec4f3f23acfb2b3777f49bd2421983976f3ab7015bc30bc57d29fb91c4e546b11fa9e9704b812bf86f910e58755000c5be841aa33

Download Submit
/data/user/0/com.tencent.mm/app_DynamicOptDex/oat/gQw.json.cur.prof

Filesize
3KB

MD5
7eb5c288145858b8df78e6da14e892a7

SHA1
51f2aece518ade09aeb88fe86bbbd861891be306

SHA256
d47cf4ec3b301f6ae61f8b6cb9e012a3a866bdddc62faf1142598903b3cc52a0

SHA512
7907bb0c76913325b7a5d631d664637401f03c23a1bcc813cbc829ad56b7b2840a7cf42967b8024456dacc787c861bc001bb78cd91aa6c3cab8f4705d4db7dc0

Download Submit
/data/user/0/com.tencent.mm/app_DynamicOptDex/oat/gQw.json.cur.prof

Filesize
3KB

MD5
e4e7a532875da1233c6b09a424b00e42

SHA1
be8266a8ea66ca99375182e889a83190726ec923

SHA256
26b9775d2f9fcc04f55a5e2cbc853a2c42893cceefb24ca09bf7a5713be8f9ae

SHA512
f50b076fa5b3fc6fb65e6037f551df34fa5155fa3752814a126d10ef8a381a2abaaf492a4a58110fbc736bea61e8997eee553f2dc465062076421a92204985b8

Download Submit
/data/user/0/com.tencent.mm/no_backup/androidx.work.workdb

Filesize
4KB

MD5
7e858c4054eb00fcddc653a04e5cd1c6

SHA1
2e056bf31a8d78df136f02a62afeeca77f4faccf

SHA256
9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad

SHA512
d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

Download Submit
/data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
df3981d9ce5bd4ae2397debc14c4325d

SHA1
80990f70016383bf6d6c50aa8baa4b3d2eca1d0b

SHA256
f487226843454ca674bb47e00ea942d29389592e0f35377b872edcb472c20a90

SHA512
60923f3102bd8fc39422f5c6b05e2ade2bd34b63c0298d23574a8272af54d14ecb2019849f59fec15e935aa11ecd44335646bd2ade2bff497cc6efbfd82af217

Download Submit
/data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
c695c24ecc4a123d7975ff41f325fdd8

SHA1
278e485fae2dea00899f47cce457f3e7f6fe855a

SHA256
6c18c57682871c68c050d10d58241e7866c8dd37fac9be892dde6e24f09a594f

SHA512
ddff279618b75404dfb57c097f3138055224c793f4b4b793790d3d4346f8db260766d176faa505a95a0369b66cadeefe4acfbdb24526b99e77bdb9f1e47f0986

Download Submit
/data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-wal

Filesize
108KB

MD5
b15c86f5323b08fbc8dc459cd7c57f66

SHA1
7e7bee590c0a416669605abbf9fbf977b61bbfd9

SHA256
9fbe3b029a0e96195c21e227773ee08383fd124a86308e6fef4966d6664ba5e9

SHA512
ce6fd6de6c4314728d9a6934defbc7b7aad29a4342a6ae69abe1629b5411d570029ef665cc8da3a14e3e2dfb1a3b7e5da98e9e5d7da7aeea4b9b234301b13c8a

Download Submit
/data/user/0/com.tencent.mm/no_backup/androidx.work.workdb-wal

Filesize
173KB

MD5
006c4d7816eb3076500236f38160636c

SHA1
265e369a52368cb6a9c5497496549c46eceea790

SHA256
2b301388a086ff1e55c89a58ff3e376e217665f6570165ee899e40bfca0c058e

SHA512
ba341d29abcba4bcde450a66dc0fa6159689a71d64ab1a1daeb5e376ca0f9c9bcc5be656353d8121c6902c2afc2ff6932556e511f2ad52c4570efadebcffefd2

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads