octo | dee856e6b41038276ed61b85eb0eaf2c4b625ba4e9d60414f4e104189662e72b | Triage

Analysis

max time kernel
148s
max time network
152s
platform
android-10_x64
resource
android-x64-20240910-en
resource tags

arch:x64arch:x86image:android-x64-20240910-enlocale:en-usos:android-10-x64system
submitted
10/11/2024, 22:01

Sharing

Report Analysis Logs

General

Target

dee856e6b41038276ed61b85eb0eaf2c4b625ba4e9d60414f4e104189662e72b.apk
Size

2.4MB
MD5

faf1004b7ac6d8d1b5f9f9a4478d92cf
SHA1

36698adbad03fec604450ae0d2fa6a65a0fa490a
SHA256

dee856e6b41038276ed61b85eb0eaf2c4b625ba4e9d60414f4e104189662e72b
SHA512

1445b65420cbbdcdf9fbe6f13f51198a9e2a392ddaf92071e9480ee172aeefae961c62200474883b74af96686a961e79fb2cc28f55fc83cfcc28527d1c118873
SSDEEP

49152:iGa2bj46SKx9Sw0rV0wCDPRF7PtNGhoQFViweBKZRHVK+ZEzVp227IRZFDwH:aZ69B0BqrRFt4SqViNE3zYVp22+DE

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.severalmoneybs/cache/gcxqt	5076	com.severalmoneybs
/data/user/0/com.severalmoneybs/cache/gcxqt	5076	com.severalmoneybs

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

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.severalmoneybs

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.severalmoneybs

Performs UI accessibility actions on behalf of the user 1 TTPs 4 IoCs

Application may abuse the accessibility service to prevent their removal.

Prevent Application Removal

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

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.severalmoneybs

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

Broadcast Receivers

description	ioc	Process
Framework service call	android.app.IActivityManager.registerReceiver	com.severalmoneybs

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.severalmoneybs

com.severalmoneybs
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:5076

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

Broadcast Receivers

Foreground Persistence

Privilege Escalation

Defense Evasion

Download New Code at Runtime

Foreground Persistence

Impair Defenses

Prevent Application Removal

Input Injection

Credential Access

Input Capture

GUI Input Capture

Keylogging

Discovery

Software Discovery

Security Software Discovery

System Network Configuration Discovery

Lateral Movement

Collection

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.severalmoneybs/cache/gcxqt

Filesize
2.3MB

MD5
29bae00f1fd095a09f57f91439258225

SHA1
9c49e7fca9120e71f672c0743eeaf85fa81fa53d

SHA256
76a42024c906998c7e539ff2abaee640bb1615434a743394c2e60f825db62432

SHA512
a956fa70ee5963d45ebfc918057667fa383675d4a94aaa916b7fa4e113fab5d39feff5a979b780369c5c06f8f9e25b08d0e9cf947dc6bbfd3d7744165cb0657a

Download Submit
/data/data/com.severalmoneybs/cache/oat/gcxqt.cur.prof

Filesize
521B

MD5
db5f457407874170441a74b1bd1f6517

SHA1
e1afc3b0d9ff160157f472bc7ad59b81035997d2

SHA256
373b2f93cda3b2a171d164a0f12b9719c39c27a6a08c716eff85d691706f138c

SHA512
c7bdf54e7238622d3610ab0a00537fe11e77788dac79be1f41f2d6fe459ed849e35562749006d10e2f98e656f461d55bcb8c57c49767ff9de078a9025f24f774

Download Submit