ermac | 4cffa1649f8fb89bab4738b5913605adc7b67b9a0bb32384901d335f94a97e66

Analysis

max time kernel
149s
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
19/03/2025, 22:12

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

4cffa1649f8fb89bab4738b5913605adc7b67b9a0bb32384901d335f94a97e66.apk
Size

3.0MB
MD5

57ce9375e1571b1ec1d8cb36ffad5b75
SHA1

128c17fc8f6dce59502bfb330524900a73a01e79
SHA256

4cffa1649f8fb89bab4738b5913605adc7b67b9a0bb32384901d335f94a97e66
SHA512

fa12f970c1a9edcb167a0c9a1b2f1fa2712010fb76325a82c6cfe1d5772a7c6fa80ad5dd20e62f94a96b2bd9fb4bebfdbec2c38a6d8cc786ec21ff5211fa62ef
SSDEEP

49152:QxXoHQDz3hwIc30hG+PbLqHq+isdT0+XkYSlNyR/Ia/8GBhYVAqaf8OpY7lAtHbZ:QxY8Jc3I1bQdPkYNP8GBLfDntZgf5Syc

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://80.87.197.162

AES_key

Extracted

Family

hook

http://80.87.197.162

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/4736-0.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/GiGklII.json	4736	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.findAccessibilityNodeInfosByText	com.tencent.mm
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.tencent.mm
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	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:4736

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

Loading Replay Monitor...

Downloads

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

Filesize
703KB

MD5
7036e1ebc564380e72414a4ae742d14d

SHA1
1d80809e4be3279fd77fccd1edd86051ff1934ae

SHA256
99b48ae8cb05ff46f23cd94d3196e042b37f4949af438eafdebc3aa71459a85f

SHA512
ef793ef449fb8cc773a83efa67d6396d88f7f73b68d7a3c32578f6040e91417b56c26f0ccc3c712b4af4f41fa955b6518463a5e86027192e5ae1db67e8d985dd

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

Filesize
703KB

MD5
ed494f937b47e81787bcaf9f782cd8d9

SHA1
080db0c22e4505cac4fac99d68ebd3d5276d43a3

SHA256
86c34d8dd3a96745efc8129df4615c7c8b6f4e82cb11d13615e77ddfe92d143e

SHA512
2a783a3c4fb4cb0051010c3d1eda1461d2be38c871b0ec6b0112548f6f7790908244d3a20b2946afc1a6734af8a564ece7d57f6f4edcd1a1a81ad46ea5dff188

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

Filesize
1.5MB

MD5
8abe1776ebc0143c41a8a6d094595815

SHA1
1365273a8f69eaa5d3d2af99783b94c8fa2a2622

SHA256
475d7bf5bc9c08e50677bd53df71fd79d50561bc48a7d5446ca61174fed101ad

SHA512
741528a836f230418ffb4c36df9a3a9b142b0ad1689f0acc3821d3f34b4a4264ba50bb5b73706f13595622d538d259124bec1d7ff5c62ef601a91a5f11702fb7

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

Filesize
3KB

MD5
ca7749a575bba85b088c7ddddb4e2aeb

SHA1
e578d4c2dd2d4748f11f8d08977bd4a94a3a06d9

SHA256
b8dd6b3b1133f6d8c141c00bdcf355de8f2673444b41fcb259116f317ce67055

SHA512
c8a19755a03c967ed63d75e6d8f0170ece54c7b72131206fb6f5734587d9b626afe70f54cd65f36a9ba8943b481b3e768379ec3b43e6b0bd53fe08592dbbd070

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
b24a4179d9867ee73b1dd526bf5af419

SHA1
a5397f90fcafcebed4f08a1678b2d5f81c2acc03

SHA256
f358a28f5e95fddbe44e5c7a420460e562d023634e99b43cbbbb867b4eb2cf42

SHA512
e5200d9a4e40e14a1870025bb0cc0428a0badd5b1e431a74a1a464e1ecef65d35b1584ea55eeb08d2dfa0e45bf1b7e29371462cb03515d126b53e94302110c20

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
576c65d1f2d2ceeee39e9d2ddb95ac9e

SHA1
68c3288b5c6689f1542fa4114071264d38a6271c

SHA256
589cacdd96f59fcf8633beb0985e1fe6f78de2fd2d5d20aaacd7cf86e1a0d0ac

SHA512
cfa30f47ca3a0572aa0c77c9e1b5ac72804847f419b6407af2d0fac5c04cb5dbc3539a3aa966ecda320cdba194f12449a97db476fc2da16c0fd6d4d446b571b1

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

Filesize
108KB

MD5
d159c8af875c8e13deb96a4d91c9ff18

SHA1
2ef1a9afcea50cb6f141b1f5d2fca92c6201b026

SHA256
e6a628a8d75a199b7bd2b02ea65ad2791df454f6f3d907ca180e0c44cf470ed9

SHA512
00849aa218f5ba4f21095609557ff8866d5291f57f134367fd3a6c89d8c9515abcd1784d5072ca89e4130251d9f21d6c0a9053e795316c90b245a8b36960ba6c

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

Filesize
173KB

MD5
ea32891af8b3f92a09950984567bfc77

SHA1
a2374b5c5334d73a63dceedb4c08052a3adae6df

SHA256
6b5fb69932cafb7c8552d3c7a71063dd5e5ea30fd29709f7bff6986123ae14a9

SHA512
b8da8c8d348f2582e0afab1fda0e7ccc1452175080571c45458540118df5e422498b18262b39409c66829babc0b338ab941bde6981d0bdbcd028e93628ee9c1a

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads