octo | 0a0c75907664b9534795703e6cc2c2331302e42249589c9b1e179186de3f760f

Analysis

max time kernel
149s
max time network
146s
platform
android_x64
resource
android-x64-20240624-en
resource tags

androidarch:x64arch:x86image:android-x64-20240624-enlocale:en-usos:android-10-x64system
submitted
29-11-2024 22:03

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General

Target

0a0c75907664b9534795703e6cc2c2331302e42249589c9b1e179186de3f760f.apk
Size

2.4MB
MD5

450800353cfc6432892e0f1caba30720
SHA1

3d17c0d4d95a46f55d15513569f1adccb605a521
SHA256

0a0c75907664b9534795703e6cc2c2331302e42249589c9b1e179186de3f760f
SHA512

5ee030c66c4d626c2e625435a8141d3d0f2caa803af24b720881fb16bb4a3d2cd12f5b13013fa80a78fb97926b24c403491c6cee1b7fcadfbcbeee0b7abefa00
SSDEEP

49152:DEiR5/Gpp+3p5eVP7gIatu+ENdlKYsdKHmn+KJV1/qvxsXBC+1vMDrFpbvdfFn:/jKAp520Iatu+E5l3J6V1UxsRC+mtpb7

Score

10^/10

octo banker collection credential_access discovery evasion impact infostealer persistence rat trojan

Malware Config

Extracted

Family

octo

https://c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://64b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://74b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://89c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b641390330721556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

rc4.plain

Extracted

Family

octo

https://c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://64b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://74b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://89c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b641390330721556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://84b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://04b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

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.wellsurface88/cache/jdntta	5050	com.wellsurface88
/data/user/0/com.wellsurface88/cache/jdntta	5050	com.wellsurface88

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.wellsurface88
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.wellsurface88

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.wellsurface88

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.wellsurface88

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.wellsurface88
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wellsurface88
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wellsurface88
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wellsurface88

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.wellsurface88

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.wellsurface88

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.wellsurface88

com.wellsurface88
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:5050

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.wellsurface88/cache/jdntta

Filesize
2.3MB

MD5
a5f5a1154a890046def9035e057dc4da

SHA1
b91e531827b4119f6d101911a361ff60387f542b

SHA256
29fd140d5e4f70c34d33595d9b61c039991d95630767e17fe868b6f7bb7b1534

SHA512
4f0545d2ab0f4807c3db584867b9e89da0c8635d4a471dd565cf58eb745dec4724c9e07c70410041f1ef0d1961a699e9432ffec9aedab556645e814cbdd4a19e

Download Submit
/data/data/com.wellsurface88/cache/oat/jdntta.cur.prof

Filesize
492B

MD5
fab1e2715e3dafcf8cdc568188bfa913

SHA1
3ce9f429b0ba40b8e66588aa0c87e8e6302d5c86

SHA256
85fa1a1fe21819b98166c960e2523299e70dc899cfdfd7eca61d7713ba341787

SHA512
747c7e626412f9429e903564ac3a53e5a71134815da7f2a1a23202fd9f705bcfd8ab33741e98f222c9f0bfd50fc2f249c85be7e2bbbef0254294a96892744b2b

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads