octo | c8ec56e1ca7ece45cf7bc202a983d7a7353a13c968547dcb3d264f42c15a2947

Analysis

max time kernel
149s
max time network
132s
platform
android_x86
resource
android-x86-arm-20240624-en
resource tags

androidarch:armarch:x86image:android-x86-arm-20240624-enlocale:en-usos:android-9-x86system
submitted
29-10-2024 22:04

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General

Target

c8ec56e1ca7ece45cf7bc202a983d7a7353a13c968547dcb3d264f42c15a2947.apk
Size

561KB
MD5

b4a81b70b318c34811936f9a4b2b752e
SHA1

baad8e0813e89de62b16a07cda4d54b2666915d9
SHA256

c8ec56e1ca7ece45cf7bc202a983d7a7353a13c968547dcb3d264f42c15a2947
SHA512

bb45050ce88b012bc02dcffe8e47d38aca4d7cba19ef9b8865724f4b85d9022115859510e7ba0bc85d3dc56889f444c61494a25a87247c54e2bf0be4eadb423a
SSDEEP

12288:362Ul+ZYkcg2OZqcPo7xjyd6iqWu28ChFLjediu/z6/0nW:362UUZ9ycA7MwlDClS/zVnW

Score

10^/10

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

Malware Config

Extracted

Family

octo

https://hepsinezipala4esdim52.com/YzM1YThkNDFkNmQ0/

https://hersenbo67saaaeldai548.com/YzM1YThkNDFkNmQ0/

https://alayinag45idaesaesr5454.com/YzM1YThkNDFkNmQ0/

https://neadamsin45mdeaayaq.com/YzM1YThkNDFkNmQ0/

https://hepsi010malltim21.com/YzM1YThkNDFkNmQ0/

rc4.plain

Extracted

Family

octo

https://hepsinezipala4esdim52.com/YzM1YThkNDFkNmQ0/

https://hersenbo67saaaeldai548.com/YzM1YThkNDFkNmQ0/

https://alayinag45idaesaesr5454.com/YzM1YThkNDFkNmQ0/

https://neadamsin45mdeaayaq.com/YzM1YThkNDFkNmQ0/

https://hepsi010malltim21.com/YzM1YThkNDFkNmQ0/

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
behavioral1/files/fstream-1.dat	family_octo

Removes its main activity from the application launcher 1 TTPs 1 IoCs

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
4222	com.severalblue3

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.severalblue3/cache/ilbwu	4222	com.severalblue3
/data/user/0/com.severalblue3/cache/ilbwu	4222	com.severalblue3

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

T1516

Screen Capture

T1513

Keylogging

T1417.001

GUI Input Capture

T1417.002

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.severalblue3
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.severalblue3

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.severalblue3

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.severalblue3

Performs UI accessibility actions on behalf of the user 1 TTPs 2 IoCs

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.severalblue3
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.severalblue3

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.severalblue3

Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
discovery

System Network Configuration Discovery
T1422
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

T1517

description	ioc	Process
Intent action	android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS	com.severalblue3

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

evasion

User Evasion

T1628.002

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.severalblue3

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.severalblue3

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.severalblue3

com.severalblue3
1⤵
- Removes its main activity from the application launcher
- 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).
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Uses Crypto APIs (Might try to encrypt user data)
PID:4222

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

Hide Artifacts

T1628

Suppress Application Icon

T1628.001

User Evasion

T1628.002

Impair Defenses

T1629

Prevent Application Removal

T1629.001

Input Injection

T1516

Credential Access

Access Notifications

T1517

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

Access Notifications

T1517

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

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Downloads

/data/data/com.severalblue3/cache/ilbwu

Filesize
449KB

MD5
9512d20419464e8e234a5076d7b43b9f

SHA1
fa7016c36b62039d21999d0c10c3f8884d8f8371

SHA256
90fb751d7e98e9a6d3555a2a33f7bd162b90418b24cae3511f75443bf83ce135

SHA512
8bca746cf02a233ac0ec6f458af99f9f801899f2a973e1f3cda46360ed029c5b8311277b519437bfeef2b26da9076873d13c02d54921d23a67c8c490e6596ad7

Download Submit
/data/data/com.severalblue3/cache/oat/ilbwu.cur.prof

Filesize
523B

MD5
29f894c3c1fb92c3db8589f15ea089db

SHA1
6a1d2addb634ffd05c577cd3d161874fa42da2d8

SHA256
ca97620b2319a0e576439a11fcdbeb33172e1497037ac30300139bdf984511a3

SHA512
cfdb94fbd56e7e61bb42180a8aeb7840c0aba0e895d1f765c28f808a2804b2689e750517214fa3708161915b594eb1d9790163fab39fe4d6ecaad5058f5e009a

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads