octo | 81eafae020d11af1482df37be37b64d767545d96a8c0dc984e797e77bb4150d9

Analysis

max time kernel
126s
max time network
141s
platform
android-10_x64
resource
android-x64-20240910-en
resource tags

arch:x64arch:x86image:android-x64-20240910-enlocale:en-usos:android-10-x64system
submitted
25-01-2025 22:09

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General

Target

81eafae020d11af1482df37be37b64d767545d96a8c0dc984e797e77bb4150d9.apk
Size

2.4MB
MD5

5e08c5a7d60370c95c758949361b5cfe
SHA1

7780f1a4bc197e6779011c55b3114b59becebb08
SHA256

81eafae020d11af1482df37be37b64d767545d96a8c0dc984e797e77bb4150d9
SHA512

101debb488acb8b5a789190ef15ab8d4c52312f7a83c923e4914f2208334e3533dd5f627e4e2e36b2c9c0a5658431258ecf93c50ae89322971b25cc865bbe5ca
SSDEEP

49152:7a0npvkXhRqD6imp7SOI3kKQB3HLrOTPVXuOiLVuIEOL5PZe8ap08nbFQ:nUqDJeS1kKu3HCP1uOEVuDOLnU08nbm

Score

10^/10

octo banker collection credential_access defense_evasion discovery evasion impact infostealer persistence rat trojan

Malware Config

Extracted

Family

octo

https://91.202.233.164/NzcxZWQ4MWEzZjRk/

https://694b64c9229d92124125w2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229d921s23532adsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c99d921s3532sw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229d9e2adsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c922153256dsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229d954362sw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229151312dsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229135131dsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229d94663sw2.com/NzcxZWQ4MWEzZjRk/

rc4.plain

Extracted

Family

octo

https://91.202.233.164/NzcxZWQ4MWEzZjRk/

https://694b64c9229d92124125w2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229d921s23532adsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c99d921s3532sw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229d9e2adsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c922153256dsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229d954362sw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229151312dsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229135131dsw2.com/NzcxZWQ4MWEzZjRk/

https://694b64c9229d94663sw2.com/NzcxZWQ4MWEzZjRk/

AES_key

Signatures

Octo
Octo is a banking malware with remote access capabilities first seen in April 2022.
banker trojan infostealer rat octo
Octo family
octo

Octo payload 1 IoCs

resource	yara_rule
behavioral2/files/fstream-1.dat	family_octo

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.portstudyylce/cache/cljbx	5136	com.portstudyylce
/data/user/0/com.portstudyylce/cache/cljbx	5136	com.portstudyylce

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.portstudyylce
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.portstudyylce

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 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.portstudyylce

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.portstudyylce

Performs UI accessibility actions on behalf of the user 1 TTPs 4 IoCs

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.portstudyylce
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.portstudyylce
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.portstudyylce
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.portstudyylce

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.portstudyylce

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.portstudyylce

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.portstudyylce

com.portstudyylce
1⤵
- Loads dropped Dex/Jar
- Makes use of the framework's Accessibility service
- Acquires the wake lock
- Makes use of the framework's foreground persistence service
- Performs UI accessibility actions on behalf of the user
- Queries the mobile country code (MCC)
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Uses Crypto APIs (Might try to encrypt user data)
PID:5136

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

T1624

Broadcast Receivers

T1624.001

Foreground Persistence

T1541

Privilege Escalation

Defense Evasion

Download New Code at Runtime

T1407

Foreground Persistence

T1541

Impair Defenses

T1629

Prevent Application Removal

T1629.001

Input Injection

T1516

Credential Access

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Discovery

Software Discovery

T1418

Security Software Discovery

T1418.001

System Network Configuration Discovery

T1422

Lateral Movement

Collection

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Screen Capture

T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Input Injection

T1516

Replay Monitor

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Downloads

/data/data/com.portstudyylce/cache/cljbx

Filesize
2.3MB

MD5
c0f72ea6acb6f49a5cd46d6395bfe858

SHA1
cb8c8ac4524b29c1a4adaf8037856557cf1d0eea

SHA256
65364f58693bac356feebfaf9bf506676908da7efce549405c06e40b4472a525

SHA512
a647c5069d83563859942fe4a05af0b75e14770c0e0245e8b107607169d575c2816022d70e77b2c2cd5a8aeb897237da36a04e3c8e87aefa0072b07de237319e

Download Submit
/data/data/com.portstudyylce/cache/oat/cljbx.cur.prof

Filesize
506B

MD5
4a8cf9f81813d80803af7f36818ecf97

SHA1
3068aca1fcb7c64fa7b3a9260fef5e1bc1af68cb

SHA256
a8baacd2bfc31999e414ca8701684e8d2fed04438bd354483645c06609ece5c9

SHA512
6f6e476056efd5896877b3717c303982dbb846ef7cd4409c03debea83b11eab32de0d5a9c17035de9a9dfd8fb4cf39eb2925f6e4dc6c971eac4ec3deda8c6c26

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads