octo | 8cb35c195acdf3689e4202005cf41f0e2998a78566d8099bd969fd32a3142a81

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
06-12-2024 22:00

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General

Target

8cb35c195acdf3689e4202005cf41f0e2998a78566d8099bd969fd32a3142a81.apk
Size

2.4MB
MD5

4272adef499e212d2f4ebbe5efb5d765
SHA1

bef4ec5b7bf9da046a5d0dbb473cec043afd65a5
SHA256

8cb35c195acdf3689e4202005cf41f0e2998a78566d8099bd969fd32a3142a81
SHA512

37f5602f3856a8650c20a45b5a5a524a43f0fa1ad388573fe6a950cc3e1c7a485c1b05ad55a028fd500d0f09d21aa9672c27540562ac6351565e78166da3dea4
SSDEEP

49152:zr8RNJY1c8CR26Wn5C+OKMyDSk7dXehG3SFh0u0Pxfz/I17tLhY/:k21dCR21n9OKMyuAktvJ0PxfMVo/

Score

10^/10

octo banker collection credential_access discovery evasion impact infostealer persistence rat trojan

Malware Config

Extracted

Family

octo

https://62237453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://35237453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://332137453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://34437453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://3637453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://8237453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://62333981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://6255553981d0595033c23.com/N2IzYzFlOTM3MWU3/

rc4.plain

Extracted

Family

octo

https://62237453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://35237453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://332137453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://34437453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://3637453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://8237453981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://62333981d0595033c23.com/N2IzYzFlOTM3MWU3/

https://6255553981d0595033c23.com/N2IzYzFlOTM3MWU3/

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.warmtalkpd/cache/ectgzzrqshlayxm	5056	com.warmtalkpd
/data/user/0/com.warmtalkpd/cache/ectgzzrqshlayxm	5056	com.warmtalkpd

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

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.warmtalkpd

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.warmtalkpd

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.warmtalkpd
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.warmtalkpd
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.warmtalkpd
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.warmtalkpd

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.warmtalkpd

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.warmtalkpd

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.warmtalkpd

com.warmtalkpd
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:5056

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

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Downloads

/data/data/com.warmtalkpd/cache/ectgzzrqshlayxm

Filesize
2.3MB

MD5
98a650eacf2c35322b2c8098d19304e7

SHA1
db38072197af970e5cb6c85ed1a89f8eb1a5088f

SHA256
4a8510dfc027aa1e8773414311fd394dcf51d96ad125e6fe165647e2b0935e03

SHA512
9053946e8230de8c996ebdcc40ae6a5a4fc48125b0707033c854800ca8100a66348b7dd8c0601ecc9a405c2438e41ac13a2d8ee56fc005c3499bf42ebacccf52

Download Submit
/data/data/com.warmtalkpd/cache/oat/ectgzzrqshlayxm.cur.prof

Filesize
497B

MD5
29ae05ce9d8ec4ba8c0be0bc75000c32

SHA1
9a06a30bf6ca0a794309cde65df13208e83766f3

SHA256
dd0883124f4460d2d928284c34932fd0e680101976e7971c52f91c2bd437ae63

SHA512
50265591eef26cd7464d171a5152930528dbd1de72c09a587fb2e22d2ed6c79a4287f13bb469d5bf916edf7a031c8e121f4c9a0bec149f6fc781f5ebc7f6cce8

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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