octo | de6532b656fa3d507b6fc878e0ccf8bb4115e8d7f2745610720681647935b22e | Triage

Analysis

max time kernel
149s
max time network
154s
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
11-11-2024 22:09

Sharing

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General

Target

de6532b656fa3d507b6fc878e0ccf8bb4115e8d7f2745610720681647935b22e.apk
Size

2.4MB
MD5

2c63df4ab516bc163ffe5ef911578d73
SHA1

7d51d0085218993c50b449e6d10e2fa4fd43c566
SHA256

de6532b656fa3d507b6fc878e0ccf8bb4115e8d7f2745610720681647935b22e
SHA512

d4cf8afc89d66fb73579527ea7a697909d2ea5291b16f292a682b04b047a5590a8271a4c22fc03d40cdae7e158cf5ffcd090359408504747e9dcaa7bd0d4d394
SSDEEP

49152:s8XEng68gTQmHKdEr1zQsFqvWXyizUoFzT/OpybpO3dfKCdak/KA4G:3J6xHKdvKxX5lXcyFCSWy1G

Score

10^/10

octo banker collection credential_access discovery evasion impact infostealer persistence rat trojan

Malware Config

Extracted

Family

octo

C2

https://7bb13903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://4b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://34b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://64b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://74b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://894b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b64139030754567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b64139033074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b641553903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

rc4.plain

Extracted

Family

octo

C2

https://7bb13903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://4b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://34b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://64b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://74b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://894b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b64139030754567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b64139033074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b641553903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

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.

Download New Code at Runtime

ioc	pid	Process
/data/user/0/com.usecompletexl/cache/cjynqyxgflb	4848	com.usecompletexl
/data/user/0/com.usecompletexl/cache/cjynqyxgflb	4848	com.usecompletexl

Makes use of the framework's Accessibility service 4 TTPs 2 IoCs

Retrieves information displayed on the phone screen using AccessibilityService.

collection evasion credential_access

Input Injection

Screen Capture

Keylogging

GUI Input Capture

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.usecompletexl
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.usecompletexl

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.usecompletexl

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

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

Performs UI accessibility actions on behalf of the user 1 TTPs 5 IoCs

Application may abuse the accessibility service to prevent their removal.

Prevent Application Removal

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

Queries the mobile country code (MCC) 1 TTPs 1 IoCs

System Network Configuration Discovery

description	ioc	Process
Framework service call	com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone	com.usecompletexl

Reads information about phone network operator. 1 TTPs
discovery

System Network Configuration Discovery
T1422

Requests accessing notifications (often used to intercept notifications before users become aware). 1 TTPs 1 IoCs

collection credential_access

Access Notifications

description	ioc	Process
Intent action	android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS	com.usecompletexl

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

User Evasion

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.usecompletexl

Requests modifying system settings. 1 IoCs

description	ioc	Process
Intent action	android.settings.action.MANAGE_WRITE_SETTINGS	com.usecompletexl

Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs

Data Encrypted for Impact

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.usecompletexl

com.usecompletexl
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)
- Requests accessing notifications (often used to intercept notifications before users become aware).
- Requests disabling of battery optimizations (often used to enable hiding in the background).
- Requests modifying system settings.
- Uses Crypto APIs (Might try to encrypt user data)
PID:4848

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Foreground Persistence

Privilege Escalation

Defense Evasion

Download New Code at Runtime

Foreground Persistence

Hide Artifacts

User Evasion

Impair Defenses

Prevent Application Removal

Input Injection

Credential Access

Access Notifications

Input Capture

GUI Input Capture

Keylogging

Discovery

Software Discovery

Security Software Discovery

System Network Configuration Discovery

Lateral Movement

Collection

Access Notifications

Input Capture

GUI Input Capture

Keylogging

Screen Capture

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

Input Injection

Replay Monitor

Loading Replay Monitor...

Downloads

/data/data/com.usecompletexl/cache/cjynqyxgflb

Filesize
2.3MB

MD5
ee1ddd36ad7ea4b37db565776a28c0f4

SHA1
1e00dde79d8179b2304a5cbb9456703b69d62dfc

SHA256
95aa44388e912b76e8d1e43de14ec44be3a72a9ea48010f1565879a7a2422825

SHA512
0ad1a1f2f06d109aee075fe5e3ce21fc58e00c20554ca16934b95f6ff255702e9adaa70677d0974f7907bf208c50d90793c060a876e96fcfd2d9f11fb62f063b

Download Submit
/data/data/com.usecompletexl/cache/oat/cjynqyxgflb.cur.prof

Filesize
360B

MD5
ad94228d9ff682afbb00c58c6f056733

SHA1
d3a99319c0bd0730334a02aef629de3f2bef7287

SHA256
693a5401278278d30eaa446d9cdf78062ae2f26606beae9bdfea6cbbb8bace57

SHA512
7b16695fbe1bf05dce3997e7e6817a3538c48c0f9936008ddd6b3b938c8eb8f67bd5f43ca4fba2c98eb0eef5786ee9725a79380d16034ef907f7955453f8c73a

Download Submit