ermac | 808b2efcfc28db5b072445482c8123231fd00258d5b3761a6536a3347df2f008

Analysis

max time kernel
32s
max time network
150s
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, 22:02

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General

Target

808b2efcfc28db5b072445482c8123231fd00258d5b3761a6536a3347df2f008.apk
Size

2.9MB
MD5

6acb44a2a17eb24da5f51b9bf7dfbfe2
SHA1

86c6c15e204f7bcc8f18d6e672dbdfe3226030e2
SHA256

808b2efcfc28db5b072445482c8123231fd00258d5b3761a6536a3347df2f008
SHA512

599f3c2fc349d5f04a088f4e3bf1e0628a6ba1ed04e7e1c9d18c85da9e6bc929263cfd83780d89a85cafca37489864a6107ea5c904aca048c99b22ba85712670
SSDEEP

49152:7DHvVps5b5ByeH97lLqHe+7sdT0+XFrkzGqZ9/j7L7EhYVAqaf8OpY7lPAxhK8xE:7DPVSmoVdPFrkzzZ98LfDEAhgJMvyB4e

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/4777-0.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 1 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/miQpStX.json	4777	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

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
- 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
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4777

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

Virtualization/Sandbox Evasion

T1633

System Checks

T1633.001

Credential Access

Clipboard Data

T1414

Discovery

Process Discovery

T1424

System Information Discovery

T1426

System Network Configuration Discovery

T1422

Lateral Movement

Collection

Clipboard Data

T1414

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Data Manipulation

T1641

Transmitted Data Manipulation

T1641.001

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Downloads

/data/user/0/com.tencent.mm/app_DynamicOptDex/miQpStX.json

Filesize
702KB

MD5
9b27046e8007dded0e9963257fd1c044

SHA1
b65bb1f70731e5a20435269d99906ef0653e5bf0

SHA256
1430fae1e99473a5c9d8d047777741e370c7cb94f14db778e889b357d869d7e4

SHA512
2289b005955b987be1ec0890bd68625ae3b1c7ad5c853013b93ba396b5f9dd28d0a51c595d0b96b1d8918f11598c229a6a3c1e92a1fb6ce70297f23392fc793b

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

Filesize
702KB

MD5
b4ed5beb81681a541c94df8be1a50b13

SHA1
ced1fa6359857864ff2af7e54c6f47e8b2013ef9

SHA256
9f1c37243f247c0e555422da0754c5d90b51249656dba266d9741541bc3c6726

SHA512
9a4c6b62a015fedbe9c168f4ba3544fb3f440f2bb2574fdb0f5658e5b422689837d8eb18ee47b31994808e90d7f8e0cb23a49aa31878d75f973191203bf63bf8

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

Filesize
1.5MB

MD5
998753d51562c21f97f24a706e88fb05

SHA1
ac7536f8d79055812ff1bb1eb9c7d9859fb552b5

SHA256
f74f6f912ea01034f43112487a31bd8e3f3df7ccffa8804c6e6ec9e1995678cf

SHA512
b021c1cb0426d24b54b80fe1bc8c056cfac077f616e04e8b5554e34ee31433dc40fb638ca226f00f8e6f2f6350fec643dd7972bacb509f55132aa1f82eff2c1e

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
dd9befed121855897c185ffeccababd4

SHA1
1ceac5a5fc168767a741cf4c55c9e9b310d55cc5

SHA256
35df3733185d0ba1a569eb7a93a813ce57e54199753e1523c67cd8cccb3f14d5

SHA512
7b3be3f26dc97dfa2dbdb3a901d27ae298e3393561ea7ef0c270848153b0581cd89c75c1a898e476412157be1c512217d012dd851f92be706d4ae0d370efe5f5

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
45b547a72815314531bdbfdf86f12efb

SHA1
d67181e95a3c84a4d3314084273cc9003b8e666f

SHA256
6fb33e59c7790913b166e8c6ccb3563f5c3e9e48ce76b50fd321cc199eb627df

SHA512
357f3a102e6865ca66b007da7bebe818654afa2c60662d26dd67e014b26c0ae1c3fb86ec24da42d8ff69b38be7d061fcd1d3feca7affaee670793eed233e8696

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

Filesize
108KB

MD5
268a60c8c8c6cc2a63d05a581025cff5

SHA1
a520f3c2bdefaeb1b3e47850c072943766f1fb3a

SHA256
bdbee3b4b2bc9774097d109fe1b8e853ab3b4d90c0058182b4ce643458354f1a

SHA512
12072a01e9eabb1d3b46a55b664dbc1b2d559683488f958d512883336f99e727e9260b89037a484db13af73e905fe612eb8ad6a97042697579e5c8d790a3758b

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

Filesize
173KB

MD5
d931934301b547a171b2ce31c35a11c5

SHA1
b3533d34cd256c7c9bd02d31040910d49bacbd3e

SHA256
7b1c5130c063a985e10c23f21a6e19d8155bd4b4d7c54473ff11c797bec72819

SHA512
17bda8e59aac07be3d5bb0a318f4a617466386e2837025271f421d18f78a217f50a74fdd6cb2d459d990515fa3354feabbed6566cc1b0b49e9571b27f96a7201

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads