ermac | ee4e51d79931f393c083ddb8886146e664800e24d7e48a034bf1fb36de6aab00

Analysis

max time kernel
146s
max time network
179s
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
19/03/2025, 12:43

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General

Target

ee4e51d79931f393c083ddb8886146e664800e24d7e48a034bf1fb36de6aab00.apk
Size

1.7MB
MD5

f6410e769a8ac7c169140de9dfdf908f
SHA1

fb2aab1d56cd428ec9169dbfd6c7457c55a11d5f
SHA256

ee4e51d79931f393c083ddb8886146e664800e24d7e48a034bf1fb36de6aab00
SHA512

cd9a233f3879db0689738593a617e7668ec4b5b3341245860d8bced1ef93dcb3bd599b8ed87d96354ace17d5c1b470aa98910f264cb5a6b847a8e64bd8471a1c
SSDEEP

49152:F3cFfiZbL4xdL3lsCI4kyVRzkmVG4nZegSO:F3cw4xtWwRz7o4Zp

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://154.90.62.12

AES_key

Extracted

Family

hook

http://154.90.62.12

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/4824-0.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/[email protected]	4824	com.tencent.mm
/data/user/0/com.tencent.mm/[email protected]	4824	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 a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
banker discovery

Security Software Discovery
T1418.001

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

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

Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs

defense_evasion

User Evasion

T1628.002

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	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⤵
- Loads dropped Dex/Jar
- Obtains sensitive information copied to the device clipboard
- 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)
- Requests disabling of battery optimizations (often used to enable hiding in the background).
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4824

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

Hide Artifacts

T1628

User Evasion

T1628.002

Virtualization/Sandbox Evasion

T1633

System Checks

T1633.001

Credential Access

Clipboard Data

T1414

Discovery

Software Discovery

T1418

Security Software Discovery

T1418.001

System Information Discovery

T1426

System Network Configuration Discovery

T1422

System Network Connections Discovery

T1421

Lateral Movement

Collection

Clipboard Data

T1414

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Data Manipulation

T1641

Transmitted Data Manipulation

T1641.001

Replay Monitor

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Downloads

/data/data/com.tencent.mm/.jiagu/libjiaguv1.so

Filesize
326KB

MD5
b64c90af86fe055b9fdb342d1a47c400

SHA1
968b90400f31b6263beff65b262ab6f74be9977c

SHA256
2bb455b368eb348d0454031e94bc2a733e7f67b6364ce6025b3232e0c43cceb9

SHA512
de41212080d78efd7f15e50f531d1e6bc44cc544fb693e9736072cd9c6b9f61fb41a6a7bbbe2f5eb0dad26695c450958b188aae802b01cebabc525e6d4d11a15

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

Filesize
4KB

MD5
7e858c4054eb00fcddc653a04e5cd1c6

SHA1
2e056bf31a8d78df136f02a62afeeca77f4faccf

SHA256
9010186c5c083155a45673017d1e31c2a178e63cc15a57bbffde4d1956a23dad

SHA512
d0c7a120940c8e637d5566ef179d01eff88a2c2650afda69ad2a46aad76533eaace192028bba3d60407b4e34a950e7560f95d9f9b8eebe361ef62897d88b30cb

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

Filesize
512B

MD5
b4e395506ff56a27bed1fe572a6c44a0

SHA1
40f5e469d1b61b56b59972fe9e05ab541b6ec60c

SHA256
fabde952d1cd5f907f2861fb871655be243bb2ca5c208e7a616d4df766ffa033

SHA512
3d844bedd57fdfdcff9a6f8bd0cb6c0701f0829f12a05effeee3bfc86a8aa3334d9666afbd77c090f65d7d4c91842ff9275b2288efa407409082920666ef0e53

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
ed70cb0aa6e22883ed097c87a40674fb

SHA1
73d79074c8a30bcea4fd9a0827dc1b9d3fcf7f78

SHA256
cae32019292d9ade4eec2b2f92d292565c4b63fece3ed66afb7d6ccac1bac11f

SHA512
4e14a3285510d28345a95ab3ffcea74416964cfab1e260b9b005230a5e60ef8a7f7393736be591a51664a6b0ddd1d905aad611fa1a2aead9ed3510c34ebf250e

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

Filesize
112KB

MD5
b1d19ffbae27355c4578d2bddf88a052

SHA1
6e9e8883c69d255bb8da43e7a254df42fea6466c

SHA256
ad36d85ff16728ef92b6aded81ce4682f16dbbe73d027f19ce9332d4edcb4af2

SHA512
8c29a417f35c52fdeffbd6fb7161a64ccfaf9f79ad3da5080f21bcfa95e29c7e2cc982f602aa381766d596bfe387651f2c55d21ae38dd9b814b3a4fcb86a664e

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

Filesize
177KB

MD5
c29a400b385abccb78fe16f682f16cd0

SHA1
05c528c767370afd120f41fc777e9d4287134b5a

SHA256
3f375f2b1ed8ea167fbf7150d4215201dd41467e4545393cd10711d7950b8c2a

SHA512
596be3a9eb0b8cb3d65e9c6bbefae2400280aa60b46b200193fffc8b4629d17ff0db07489b6443f958088a2ac528cc9a1d79731d5691f6f82f917ba585b9b6be

Download Submit
/data/data/com.tencent.mm/oat/x86_64/[email protected]

Filesize
344B

MD5
f30431f540dc0f6861c0a3eb576e22c6

SHA1
69945a0344761e24d7f9392edd8822820d450f13

SHA256
f1b04759611c9840a2c48017e4bb4ab97e6f42a28446eecfa99003cb1dc17617

SHA512
804778aacc568ee91aa9dae0f087464f35f114d7328648fbbed38e5294b9a179e41e81a8f2bdc2092f33f59db63161e96d2f00573d06ff8f0ff979ae0c56aab9

Download Submit
/data/user/0/com.tencent.mm/[email protected]

Filesize
2.0MB

MD5
40cb56a4d76414296a84bfed60b6c127

SHA1
6b2a5132dd77022708b2b9959737f8377a93a465

SHA256
9364ddf46fe1bf90cebac61bc7cbba8707de8158ce444a8fb43220dd50d0699d

SHA512
ea743dbf8e188e17589a443c49bbd07d5ebef8edd8a02b40f32bdd9fdbfcdcc63e298f6c4cbd27cfcd9033fc9382b30b0c5fec3e60e400f2dca34a40f5815a02

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads