octo | fbc82a2845b795977f98af922094399e93bca6549bc5fd905ac6b3c9a723a406 | Triage

Analysis

max time kernel
149s
max time network
151s
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, 22:08

Sharing

Report Analysis Logs

General

Target

fbc82a2845b795977f98af922094399e93bca6549bc5fd905ac6b3c9a723a406.apk
Size

2.4MB
MD5

b7a5dea57583307782af8b0b373c9083
SHA1

a39c39d3198c443d1911189d55e077bb4562fb34
SHA256

fbc82a2845b795977f98af922094399e93bca6549bc5fd905ac6b3c9a723a406
SHA512

849081760147fc9d6fb533f45401bfb3098f6b0023a60c56a3f1fc6bc663e7564c1eb0a964e40ac9e99586b958f48dcd6a9f8bd6cdcee035b6544f4cb8ba7650
SSDEEP

49152:9svNvYu+XP3uWyZCIckqYvsW1fHBAj6eItgNmYE4XVV0ACkZsAKVfHBKNYvRs0:kmuePeWyM/khvsCfhAj6TtEi4z0TkaVb

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.pressendta/cache/cnkzsc	4789	com.pressendta
/data/user/0/com.pressendta/cache/cnkzsc	4789	com.pressendta

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

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.pressendta

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.pressendta

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.pressendta
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.pressendta
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.pressendta
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.pressendta
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.pressendta

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.pressendta

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.pressendta

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.pressendta

Requests modifying system settings. 1 IoCs

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

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.pressendta

com.pressendta
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:4789

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.pressendta/cache/cnkzsc

Filesize
2.3MB

MD5
32e1e932a9c66ff01d4cf568abeac4ee

SHA1
c0b4657f6d653c324d5e0bfd04b50b45e01ab2c2

SHA256
c727a002aa7cfc58750e30dcc11d4eac288e18cf32fd3570d2f159cddefb91bb

SHA512
e25b005e2184fb77879ebfb160d42d0a5a78fecde4734727c4c889ef84ad44ba452a2285d449d03f8046f6f6160ec4b5598db919a020241a5629934738172843

Download Submit
/data/data/com.pressendta/cache/oat/cnkzsc.cur.prof

Filesize
355B

MD5
c35a4e242c1af68c1c6b64193a837e7f

SHA1
ff3bc49188b22b38fa3651bf53c18e1905a06636

SHA256
977ead7fffcc272bd9d939cddaae023edfe3bbefd5a10508b3c13d8a00743ccb

SHA512
88f0598a7243cab4708dcae58c9259af5a285cced15e4d54352f419ba070aa6109c2acf183dd8b325c8f358050bfc1f5143a57c4023972c5244412d812d3a03f

Download Submit