octo | 97cd36b39202628c65df2cc4791c8599861c6afe4c4a3d2ee52fe3fc2053dcf6

Analysis

max time kernel
149s
max time network
154s
platform
android-9_x86
resource
android-x86-arm-20240910-en
resource tags

arch:armarch:x86image:android-x86-arm-20240910-enlocale:en-usos:android-9-x86system
submitted
16-11-2024 22:14

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General

Target

97cd36b39202628c65df2cc4791c8599861c6afe4c4a3d2ee52fe3fc2053dcf6.apk
Size

541KB
MD5

bba7093518573eecc5c8f56891b187f0
SHA1

f3fc6c461a68aa79766109afbcdbfd2487eb708e
SHA256

97cd36b39202628c65df2cc4791c8599861c6afe4c4a3d2ee52fe3fc2053dcf6
SHA512

49775e25996f6cc18af5f0f72f7fa32347e92526e7fe685d9c02ef5b25491442eca0c7739bb253510a0d830eaee9719a87a3ae3e18c4befed3fecdb860450fb8
SSDEEP

12288:Oro/F8EZwyjLMY8Ed/fS7aKCeJEx17fc0G34atEQGv03Cex2liSnE:O8SQZLx8EdSmyJE73Q4K7SnE

Score

10^/10

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

Malware Config

Extracted

Family

octo

https://213.109.202.154/MWMxNzg0YzJjZTVh/

https://yamacreklam232.net/MWMxNzg0YzJjZTVh/

https://y3macreklam232.net/MWMxNzg0YzJjZTVh/

https://y4macreklam232.net/MWMxNzg0YzJjZTVh/

https://y5macreklam232.net/MWMxNzg0YzJjZTVh/

https://y7macreklam232.net/MWMxNzg0YzJjZTVh/

https://y8macreklam232.net/MWMxNzg0YzJjZTVh/

rc4.plain

Extracted

Family

octo

https://213.109.202.154/MWMxNzg0YzJjZTVh/

https://yamacreklam232.net/MWMxNzg0YzJjZTVh/

https://y3macreklam232.net/MWMxNzg0YzJjZTVh/

https://y4macreklam232.net/MWMxNzg0YzJjZTVh/

https://y5macreklam232.net/MWMxNzg0YzJjZTVh/

https://y7macreklam232.net/MWMxNzg0YzJjZTVh/

https://y8macreklam232.net/MWMxNzg0YzJjZTVh/

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
4311	com.mountainsheawin

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.mountainsheawin/cache/gtbnngahj	4311	com.mountainsheawin
/data/user/0/com.mountainsheawin/cache/gtbnngahj	4311	com.mountainsheawin

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.findAccessibilityNodeInfosByViewId	com.mountainsheawin
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.mountainsheawin

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.mountainsheawin

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.mountainsheawin

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.mountainsheawin
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.mountainsheawin

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.mountainsheawin

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.mountainsheawin

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.mountainsheawin

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.mountainsheawin

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.mountainsheawin

com.mountainsheawin
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:4311

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

Replay Monitor

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Downloads

/data/data/com.mountainsheawin/cache/gtbnngahj

Filesize
450KB

MD5
9d65ea5d15946c7ea4ab87ce1d9af32b

SHA1
bdac97497f8ce5c51240009827efd5798d003848

SHA256
097ba5d5c9c44c6830bcb41520f9bb2c8d9604fc44be8c84ff82f85c8096c4a4

SHA512
23f4fde63ea42627fe7badd3c92626761f6a7fc977dae7bcab605164e6ace65f5a13ef809e8dcb9da254ab91423ea9176a747ab2dd2b4eda8dacc6049585f56d

Download Submit
/data/data/com.mountainsheawin/cache/oat/gtbnngahj.cur.prof

Filesize
518B

MD5
6d923498905359a0f9c66124c1054005

SHA1
f40603c1dadb4c67f37d18289e6fddec2f1fd3f7

SHA256
4fe05a1645ee4848228a0a0ee83e5e1803cfb62da1ce4761120d60b6ce5bd466

SHA512
31b59f2b63663f4e7016ef747c01dfaf77fab2089713fdd16efa77ea8380b8bdb104db44ab12e8e16250bb1fad2c450c8f1753c8df6e4e700da99b347fc9f097

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads