ermac | 913c3f5a4ac477a4d3b22828cb7b34c19bb483d76c9e34fea2c2c2a839bc6d6f

Analysis

max time kernel
10s
max time network
156s
platform
android_x64
resource
android-x64-20240624-en
resource tags

androidarch:x64arch:x86image:android-x64-20240624-enlocale:en-usos:android-10-x64system
submitted
16/01/2025, 04:15

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General

Target

913c3f5a4ac477a4d3b22828cb7b34c19bb483d76c9e34fea2c2c2a839bc6d6f.apk
Size

3.1MB
MD5

567b35b4761c2ba1d892138c301b1101
SHA1

64b8e8d590402ba162fa2e8c446ec30de33d6caa
SHA256

913c3f5a4ac477a4d3b22828cb7b34c19bb483d76c9e34fea2c2c2a839bc6d6f
SHA512

0a42739323f2daf57ddc6aaad9aac292573505477f64ce3c89fe60ccab3eca36e4efec3a3f339cc27fb47537cbdb91af9b384fbe1842d0dd2ad30432c37cdb7f
SSDEEP

98304:B05FVxjEHmnwGDKxlMMW7JUkk6dH8FMkw+/IzkCpht:BmxQGFDe+7Wtan+/Ixt

Score

10^/10

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

Malware Config

Extracted

Family

ermac

http://154.216.17.69

AES_key

Extracted

Family

hook

http://154.216.17.69

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
behavioral2/memory/4929-0.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.fsaslkasata.kuri/app_shed/LB.json	4929	com.fsaslkasata.kuri

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.fsaslkasata.kuri

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

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.fsaslkasata.kuri

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.fsaslkasata.kuri

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.

evasion persistence

Foreground Persistence

T1541

description	ioc	Process
Framework service call	android.app.IActivityManager.setServiceForeground	com.fsaslkasata.kuri

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.fsaslkasata.kuri

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.fsaslkasata.kuri

Reads information about phone network operator. 1 TTPs
discovery

System Network Configuration Discovery
T1422

Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs

persistence

Broadcast Receivers

T1624.001

description	ioc	Process
Framework service call	android.app.IActivityManager.registerReceiver	com.fsaslkasata.kuri

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.fsaslkasata.kuri

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.fsaslkasata.kuri

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.fsaslkasata.kuri

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.fsaslkasata.kuri

com.fsaslkasata.kuri
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
- Queries information about the current Wi-Fi connection
- Queries the mobile country code (MCC)
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4929

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

T1603

Persistence

Event Triggered Execution

T1624

Broadcast Receivers

T1624.001

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

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.fsaslkasata.kuri/app_shed/LB.json

Filesize
735KB

MD5
19dd9a04c41a4a5079fc0fd01a463cd9

SHA1
5bf4efd520550528535a60cb96f997777f89f172

SHA256
b95d00de087834af97723dcad42cd3e28185ce239e9ae422ed96c48c947015c5

SHA512
2cd3187a11af71bc660df9d51e63640dd5353d3b0936f226f4106e21f382e1799843f4ed6c8d87ce3b5fe72c190795476ff6d57be4e538e703bbfadd0e4de8c5

Download Submit
/data/data/com.fsaslkasata.kuri/app_shed/LB.json

Filesize
735KB

MD5
3d57a3bc0cc3f3bcea3bbabac2bf423d

SHA1
6e703b10c76e1cc8b2e85583383a00e42f56d4b4

SHA256
9cf0c3fe66a49d668c75a95b022592cd6815236f82d944cb9a472e0eeab36ca5

SHA512
e428afe928a93f2af1dbe82e88eef462e7beca5f0e268bb728c6da65273acdea37b1e65bc21b67e22a7a5d0ef74f7db06cd9c5daef8e298c98825171ebb1d892

Download Submit
/data/data/com.fsaslkasata.kuri/no_backup/androidx.work.workdb

Filesize
4KB

MD5
f2b4b0190b9f384ca885f0c8c9b14700

SHA1
934ff2646757b5b6e7f20f6a0aa76c7f995d9361

SHA256
0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

SHA512
ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

Download Submit
/data/data/com.fsaslkasata.kuri/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
061a8c273e574a429dfcf883058c2478

SHA1
82ed88b3da9641d85c34f4754a36ffa268570384

SHA256
0fc49722ca41be29de540806ecc995fdc64883ca3bfc53b47ab13b080a0f82f1

SHA512
f30c122946678be1d9299cb4fabe109ae2df77e56dc71dad3e58083d8bb3d3543bed050365112ad25520a6dd50f6eeeee85ea0c77b08de498a0f0e8953616ecb

Download Submit
/data/data/com.fsaslkasata.kuri/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/data/com.fsaslkasata.kuri/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
0b48a6c41fc433b1abb4de7261c54369

SHA1
37627812305e9e73661d1a2ec6194b0218ccb6cb

SHA256
a98fceef62262609ab59318bc35740309bbba49e48720cf6efe9286bc59056fc

SHA512
06b3970dc9b4c6ab3890a29320edbdfebe1cc1a75e1347e718275337c2f316ff1658be890f037b012bb8a797ab3e2f583ef2f545080800005d707b82b6d3721b

Download Submit
/data/data/com.fsaslkasata.kuri/no_backup/androidx.work.workdb-wal

Filesize
108KB

MD5
4693326e461110c0ad83d18230f293c9

SHA1
83031543b504a85afe59d3f5a063ddfef0fca9fe

SHA256
c1ab05d18a5f2497773b13b0a1fc0051f039ec7baf15cc50a5c5c23dd8c02572

SHA512
54172fe40b88220bf856c588c84965b6a3d8d000d85daf2cce8f6d9c580634edf42eeaa985f6ea2826c617d4bf25e5b7cae1a62d2701cbd77071b217388363b2

Download Submit
/data/data/com.fsaslkasata.kuri/no_backup/androidx.work.workdb-wal

Filesize
173KB

MD5
53f57c151071580ae273885d3c3abbfe

SHA1
081ff78aed03978ae526cf64d33a643d833c5f1e

SHA256
ad5a60dd80a36f923e4a70781cb34533b5a2b5201414fc356dae2001c248be25

SHA512
7be79948e126d816f8c789cd03e5e8b1c67aa94a59b6225a5481192c49c4afb37a9c24c5e0f57fbf1fe0405b90630c4781f57ab6941cb149824b9df44a7a9723

Download Submit
/data/user/0/com.fsaslkasata.kuri/app_shed/LB.json

Filesize
1.7MB

MD5
9eccb01fd5e6aa747a3b8fcb38173340

SHA1
77a21894421bbbe4ae767c9b56150c22a380f86a

SHA256
3163ad11d263490feeabaf6d1e83a9cd4f5466a031cc012c02bee0212edd09e3

SHA512
740be2e7273890531c52d94be49ec71ec7045fd38cfcfd6330951125996266832ed2ac13369d18931e8659b251149f3793a3e1f8c66a8b457063b2083c1788e2

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads