octo | f97db603dbcea707dc8e491035cc96a6f24b77897bc247bb6cf61afa15d45d5d

Analysis

max time kernel
149s
max time network
158s
platform
android_x64
resource
android-33-x64-arm64-20240624-en
resource tags

androidarch:arm64arch:x64image:android-33-x64-arm64-20240624-enlocale:en-usos:android-13-x64system
submitted
14-01-2025 22:00

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General

Target

f97db603dbcea707dc8e491035cc96a6f24b77897bc247bb6cf61afa15d45d5d.apk
Size

2.4MB
MD5

44eba0928c9308d8076d95c10b84a927
SHA1

35081cf8a115b76981798d22a6abe394c56c4b27
SHA256

f97db603dbcea707dc8e491035cc96a6f24b77897bc247bb6cf61afa15d45d5d
SHA512

d675f6ea90df75bee1e28ba83f29a8be6aa1d279ca17557119b3593a7aacf231388a21eabe97709fa4d1a41874551c781ac9a5987f6cfef9d90cf69419b9720b
SSDEEP

49152:IuRZhMs0rjDtKIM68vXkuBXtCmwCxNPxOCKx+AkZgDZOvTL4jeT426BrLWTZ/:rgz8PXwUaCKx+AlObE1BqZ/

Score

10^/10

octo banker collection credential_access 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 1 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/user/0/com.threesayr/cache/ehpizutztfsg	4337	com.threesayr

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

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.threesayr

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.threesayr

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.threesayr
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.threesayr
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.threesayr
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.threesayr

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.threesayr

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.threesayr

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.threesayr

Requests modifying system settings. 1 IoCs

evasion

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

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.threesayr

com.threesayr
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:4337

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Foreground Persistence

T1541

Privilege Escalation

Defense Evasion

Download New Code at Runtime

T1407

Foreground Persistence

T1541

Hide Artifacts

T1628

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.threesayr/cache/ehpizutztfsg

Filesize
2.3MB

MD5
041f4f571c759ece7553adc226d4ee8a

SHA1
32969b7fcc190c51519f7ec6eabdf403432f76cb

SHA256
5fa3642607963ca5fbb616aa63da4cda4bd0053d3789a76a8030e304aff78a9a

SHA512
e0b887b266cda8ac6f072175da9b7fc28b9332de38dcd4f25e63600eff1fb2ed7b78ba0b1327a1b95e9715090701755328ecd1137da11c648024ec50c9b8da04

Download Submit
/data/data/com.threesayr/cache/oat/ehpizutztfsg.cur.prof

Filesize
421B

MD5
62b992d5b0123db8b1b97250e4b55c74

SHA1
1fbfcb3f5ae91c41eefb8d140065341007e84ada

SHA256
0e202404491bcaea5db5fb2ad5e460db98e1b0c4284505e198abd9a540eb6e2b

SHA512
7ff3e1dc00540cfd10c9cd81ead407f1aba76844fc295314ef0e77a028c034a7fda5ce0c39acda4b9ace97662b9d6a448f269ba4fe61ef90d8a89b6d5b9e15a2

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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