ermac | 95a9a3138aa478f0686bc36adf381a2bac3a6f31293061aabac856f43d057c48

Analysis

max time kernel
29s
max time network
32s
platform
android-13_x64
resource
android-33-x64-arm64-20240910-en
resource tags

arch:arm64arch:x64arch:x86image:android-33-x64-arm64-20240910-enlocale:en-usos:android-13-x64system
submitted
21/03/2025, 23:53

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General

Target

95a9a3138aa478f0686bc36adf381a2bac3a6f31293061aabac856f43d057c48.apk
Size

18.0MB
MD5

cee85954a7ef079b0c154f6b5bf96e84
SHA1

b2074aeab78e029b63d5aeb5436f31a26c2ac1f8
SHA256

95a9a3138aa478f0686bc36adf381a2bac3a6f31293061aabac856f43d057c48
SHA512

484c2c6a34c9cc0879cced18926bfd00820aff5d28d025ee9eefe23c972e18c93766f22b07137f80c749a3180ff5666cd18427439a2323d018e6fd3eebb0d605
SSDEEP

393216:ugjuCiPE8U46gtpMAuGw8JaJCMzDIwDBbVAH6J+Kh:XuCl746mptuGwAQDDDAKh

Score

10^/10

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

Malware Config

Extracted

Family

ermac

http://95.215.108.115

AES_key

Extracted

Family

hook

http://95.215.108.115

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
behavioral1/memory/4480-0.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 2 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_float/ae.json	4480	com.tencent.mm
/data/user/0/com.tencent.mm/app_float/ae.json!classes2.dex	4480	com.tencent.mm

Makes use of the framework's Accessibility service 4 TTPs 2 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.findAccessibilityNodeInfoByAccessibilityId	com.tencent.mm
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	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

Reads the contacts stored on the device. 1 TTPs 1 IoCs

collection

Contact List

T1636.003

description	ioc	Process
URI accessed for read	content://com.android.contacts/data/phones	com.tencent.mm

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

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

com.tencent.mm
1⤵
- Loads dropped Dex/Jar
- Makes use of the framework's Accessibility service
- Queries information about running processes on the device
- Reads the contacts stored on the device.
- Acquires the wake lock
- Makes use of the framework's foreground persistence service
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
PID:4480

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

Credential Access

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Discovery

Process Discovery

T1424

System Network Configuration Discovery

T1422

Lateral Movement

Collection

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Protected User Data

T1636

Contact List

T1636.003

Screen Capture

T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Input Injection

T1516

Replay Monitor

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Downloads

/data/misc/profiles/cur/0/com.tencent.mm/primary.prof

Filesize
427B

MD5
abe28289dce0a17a02cba981ba2c06a1

SHA1
6704448d94d213cb854149d814e4cffa6e752c89

SHA256
a2ab035f05077dfa33dd7635ae9328952a829991e4af990f57e6b6e78c66303c

SHA512
00cdd7a09e0a61c1fd0b0ff8c80216ce86bc6461299fcb596e212bbabb7a2c5be4debcee36c11429365656e9f5ee3c8a384963ce5d50901c2bc9e6ff63959f70

Download Submit
/data/user/0/com.tencent.mm/app_float/ae.json

Filesize
4.6MB

MD5
75fa606b2ba5ee9adb624489eef627af

SHA1
26d1fdeb0dbeb669f5b011bbd1adb458d190e044

SHA256
bdf758d57938b0be1e478e1c667e7e7047f1b382d4688bc3469166eda3b76913

SHA512
e329f0e665f665b294a0dd1c0b23715a3969959871675fdcb33ab2e12cf2956ae174c23d92898fc8383aa19b5a8a4930a7b38adbe6ca75bbf1e24cb7e6ef205e

Download Submit
/data/user/0/com.tencent.mm/app_float/ae.json

Filesize
4.6MB

MD5
5da1dc144fe6be7e31699d25eec3106d

SHA1
484b172b3c81b730d8eace4d383fe40cfbe0f022

SHA256
c4eb9a17fcad492854a115259ebd3ecb71a8d3a5b256fbfa93cc387f20353174

SHA512
76f72d016fe4ddb9934d4edfd85daf1a5df983993b57d1f26a06679c3e3b9f1e9199a36ff51c85381841d572fa273303dec0410e5db8c1850e4149c00ee64c3f

Download Submit
/data/user/0/com.tencent.mm/app_float/ae.json

Filesize
9.6MB

MD5
2f1cbfd8f5d1d4bd5c56b5f7554594c8

SHA1
3426b8c27135ce94604a651fb1872a2145f26562

SHA256
523b57f3022a876df57f98a418f20af69088843ef32a3e97a6b3548a64c5b416

SHA512
80b0b43db36215c70e5ad5cde7676d364b0bea5885cc219e86b29d9f651df9bda4fcae5809bed8b3c268bbaf42ed225617a194c25386376ec199c5eb4fd4e9da

Download Submit
/data/user/0/com.tencent.mm/app_float/ae.json!classes2.dex

Filesize
2.3MB

MD5
8a23a0d9bb51f6c9b1f787fe3659d491

SHA1
e0a66629741d1008f450c2ed7983f63c94dfc6b8

SHA256
9d042a053688e8f020530fea0e2b994e4349d941501c2474349215b7361e503a

SHA512
9d49e3351dc1780eb0fae2e680534d4e62ec7b1322abe234a69b786da869ed67a53a75b8026b7fb280b2accab9995b8ca590e4389e0ee76baab4d2712318ca95

Download Submit
/data/user/0/com.tencent.mm/files/profileInstalled

Filesize
24B

MD5
6628b9c6bccd1e5b25066b64f2b3cda0

SHA1
afb75de72e6e41ab572bff119752474b602c1f0b

SHA256
59ec288e067bf528786d9f089d3a6009d856993bc7a81158af2e8e978bdab1c2

SHA512
568cecbf70737f20207f01283c26e29c4a19730b3b670b11a589d809801cd5136ab0b29b97461b06e2b13f5c14bb7a7dacce7d4fcdea9ae9be469fe6f271cb8b

Download Submit
/data/user/0/com.tencent.mm/files/profileinstaller_profileWrittenFor_lastUpdateTime.dat

Filesize
8B

MD5
a4518a5e2a71c77a33d5fffcd2e2326a

SHA1
edc8620250ba8b3f8c5e4aac43141900211ae016

SHA256
027f0f4929b13a18e875d214999326c2f4ba10a4f512978139a0d35d124fbf2a

SHA512
d99818ce9568b95f4e8e9873b2a23bd6da5f3f448c69748464b74dcef1b45c394cd7d3de6cb5c4ec5758bde470623a4ee04b544c76d2d5fa366166a068ab9e5e

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

Filesize
4KB

MD5
0eb157e1a86d4d00aa601dd2f6ff3ee3

SHA1
fee434f784e73cc7916322e949f727caf8363102

SHA256
b9a8194b71a046e8c0eb30995827b582b4bea834f630a5df2483b778a7d7d8a4

SHA512
b9b79b8c3af8a3f140df230fd89e95206358ba50ff214e7323a2dbbe2937b795f970e588302ffd5d721318bd597ce0a27af26d6cdb07f45569c30209845082a8

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

Filesize
512B

MD5
eadf003d7c95f3b05185d456b819b230

SHA1
73c3edaaff962bc4ade5048597a0e82fab012e6e

SHA256
38df4549ff67522b9c87690ed00a8f451fc499eefac96e1a4756a9e91f68f978

SHA512
b4e5af1b1de8cb704ec0e349222a018bff3b17c3297f12cf44ff0bf32ada4f67bf64e088c0ea2cd9b3f9ea43f655e27c578524c53449e1da876f5f936e220e0c

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
695d4dcb3635681eb0c903ffc8426ff7

SHA1
4ee8ad77e18cc02fea96b895f50b4d97228695f4

SHA256
602efbee7da9e8280a956f530b4cd90c94292af257f45e88b165d1ba84e99f09

SHA512
9e05fcdec4e9704129c869eda30f9d27f9b0e19f6d8796a9611f3ecf31a1f4cbce9059363c61060022f3f31f0998c80f57811d92f86c9ddd4272a968e99034b9

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

Filesize
108KB

MD5
c851e30f8b80ca3277b18a451f22a061

SHA1
3011137ced15ea5e7b6af9f99af138521a22f37b

SHA256
09ca010447877eede6307a41f0aef61783bcec1a56387b4dceb2de43c9b6a86f

SHA512
0fc770cd31cd9db7769c258a5d1b9b2248eef9d68124aa5bf72dd5700ae68597fc58faef8f62f6e411c95efbfc9e69ef3062d5b61965610dc7b127396caeca7b

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

Filesize
173KB

MD5
0fbbb09ef646e87b19f02fc93955272c

SHA1
88cc8500f01cdf5564e5abeb4b75b97196972726

SHA256
c6e127b19d618f2b5094a5e44749bdffa83220b1f3c2c20c3740e874b3cbedb6

SHA512
af48a5ad5e7ad05ce694f70ac85762b5c5944cdcdc4d14cad766349468cc7cf71e196ed5081d6c71c6daaaedd8ed37187022c48a3597f5e8f68c5018b9ac9cb6

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads