octo | 39fa6a2c6edaee00595f26e6f8978b939126236e5fcaa4e77e409e33c4ce7af8

Analysis

max time kernel
149s
max time network
148s
platform
android-9_x86
resource
android-x86-arm-20240910-en
resource tags

arch:armarch:x86image:android-x86-arm-20240910-enlocale:en-usos:android-9-x86system
submitted
18-01-2025 22:05

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General

Target

39fa6a2c6edaee00595f26e6f8978b939126236e5fcaa4e77e409e33c4ce7af8.apk
Size

541KB
MD5

21459cef50adf90da02560e3a96bbe91
SHA1

f527ee2e125ddb496d80d0946359ad8a80195baa
SHA256

39fa6a2c6edaee00595f26e6f8978b939126236e5fcaa4e77e409e33c4ce7af8
SHA512

f436505b67331f7517cf8e739356bfcff3f2f3137f507e50c1b0f7bf6ba0f0be1f190e4bdd8d5f41e97e2e451dd59a761027715b3984c5d1760c1f6209c0f822
SSDEEP

12288:Kbm9ivCzgPO+Yg69r3o0H9MB9edz/84NFAsDmEbHnT:q+V8Pjg4m9M6NDDmEbHnT

Score

10^/10

octo banker collection credential_access discovery evasion impact infostealer persistence rat stealth trojan

Malware Config

Extracted

Family

octo

https://179.43.142.190/MDQ4Yzc4NTJkYTg4/

https://azisswravaas.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswravaas1.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswravaas2.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswravaas5.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswravaas34.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswrav44as2.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswrava333as2.xyz/MDQ4Yzc4NTJkYTg4/

rc4.plain

Extracted

Family

octo

https://179.43.142.190/MDQ4Yzc4NTJkYTg4/

https://azisswravaas.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswravaas1.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswravaas2.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswravaas5.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswravaas34.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswrav44as2.xyz/MDQ4Yzc4NTJkYTg4/

https://azisswrava333as2.xyz/MDQ4Yzc4NTJkYTg4/

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
behavioral1/files/fstream-1.dat	family_octo

Removes its main activity from the application launcher 1 TTPs 1 IoCs

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
4388	com.callout99

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.callout99/cache/taexjp	4388	com.callout99
/data/user/0/com.callout99/cache/taexjp	4388	com.callout99

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.callout99
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.callout99

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.callout99

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.callout99

Performs UI accessibility actions on behalf of the user 1 TTPs 2 IoCs

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.callout99
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.callout99

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.callout99

Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
discovery

System Network Configuration Discovery
T1422
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.callout99

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.callout99

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.callout99

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.callout99

com.callout99
1⤵
- Removes its main activity from the application launcher
- 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).
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Uses Crypto APIs (Might try to encrypt user data)
PID:4388

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

Hide Artifacts

T1628

Suppress Application Icon

T1628.001

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

Replay Monitor

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Downloads

/data/data/com.callout99/cache/oat/taexjp.cur.prof

Filesize
496B

MD5
105e1a66fa98e20025e911092b54b80c

SHA1
812a55f067c17ea6812050737752566bcd328845

SHA256
e0fdff70728033c06a3f44fb2525124ac9f8aca48a1582b5903864637605f628

SHA512
f56e4eca7f0176cbcb4f2ea207357fe1be1e5d54dc1971646aadee0f2a579c67711b6c7f719b497a30715300ec7e20995218cb3919c534031b03c22372f1d2e5

Download Submit
/data/data/com.callout99/cache/taexjp

Filesize
450KB

MD5
c145b9258cc54e9f2be06164d27ac87a

SHA1
a6ece3d7318aa505525e92a4525d186f658f6a2c

SHA256
9dcd25786ea28a44e3f2f2daf5eff82e7fbf9b75e4f63122ede5dff91379ca50

SHA512
35a8b7234b5632c453fedbde98b82f1d8e52d6ce2034338cb2314b4aca31be7238bf901a990fd04cce81237479eb0624bf7545660a5a73f0498760b5cc82bdfa

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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