octo | 53e3f7cc92854953a51f7908138d06c2557891e55cae9437dec87e32b4214354

Analysis

max time kernel
22s
max time network
38s
platform
android_x86
resource
android-x86-arm-20240624-en
resource tags

androidarch:armarch:x86image:android-x86-arm-20240624-enlocale:en-usos:android-9-x86system
submitted
16-12-2024 02:17

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General

Target

53e3f7cc92854953a51f7908138d06c2557891e55cae9437dec87e32b4214354.apk
Size

9.8MB
MD5

21d2217170abc458488889ac83474492
SHA1

880e6dc9f9f1375bae5161c3d9093829efc4adf3
SHA256

53e3f7cc92854953a51f7908138d06c2557891e55cae9437dec87e32b4214354
SHA512

4311279be89d0ebff2fe1b22ef94b2c5bb1af0551f966782e03eb244822bf1528668b199bb500c62f9d76d45a0e57920ff6d81b261711ff1d0063e8e63e24d1d
SSDEEP

98304:4IYdaOVvVKMGFH3XY5iSRGxaRsDhqa1/F2tN7tuT53OatAzj1lf:4dvUjB3XYrvRAqQ/Fg7tuTxduX

Score

10^/10

octo banker collection credential_access discovery evasion impact infostealer persistence rat trojan

Malware Config

Extracted

Family

octo

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/memory/4250-1.dex	family_octo

Loads dropped Dex/Jar 1 TTPs 3 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/user/0/com.picturewatch_webapp03/app_cash/BBAypda.json	4278	/system/bin/dex2oat --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --dex-file=/data/user/0/com.picturewatch_webapp03/app_cash/BBAypda.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.picturewatch_webapp03/app_cash/oat/x86/BBAypda.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.picturewatch_webapp03/app_cash/BBAypda.json	4250	com.picturewatch_webapp03
Anonymous-DexFile@0xcf678000-0xcf6fb940	4250	com.picturewatch_webapp03

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.picturewatch_webapp03
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.picturewatch_webapp03

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.picturewatch_webapp03

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.picturewatch_webapp03

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.picturewatch_webapp03

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 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.picturewatch_webapp03

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.picturewatch_webapp03

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.picturewatch_webapp03

Checks CPU information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/cpuinfo	com.picturewatch_webapp03

Checks memory information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/meminfo	com.picturewatch_webapp03

com.picturewatch_webapp03
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
- Queries the mobile country code (MCC)
- 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)
- Checks CPU information
- Checks memory information
PID:4250
- /system/bin/dex2oat --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --dex-file=/data/user/0/com.picturewatch_webapp03/app_cash/BBAypda.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.picturewatch_webapp03/app_cash/oat/x86/BBAypda.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4278

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

User Evasion

T1628.002

Input Injection

T1516

Virtualization/Sandbox Evasion

T1633

System Checks

T1633.001

Credential Access

Input Capture

T1417

GUI Input Capture

T1417.002

Keylogging

T1417.001

Discovery

Software Discovery

T1418

Security Software Discovery

T1418.001

System Information Discovery

T1426

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.picturewatch_webapp03/.global.com.picturewatch_webapp03

Filesize
48B

MD5
046a414913add6f5bb60072c7db819b6

SHA1
451ee4f6809260aec622d772fd329c7d0297a842

SHA256
b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a

SHA512
4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

Download Submit
/data/data/com.picturewatch_webapp03/app_cash/BBAypda.json

Filesize
1005B

MD5
713584301d95590dcbf084f4676f774c

SHA1
a5870d562273a805ed2bfd6e225bea9c11a30f64

SHA256
292fc5d13480dbbe630337660fecab915706968743ba2b048910fcbb2e9f8256

SHA512
ec01b49db8341b1c9c106170f38bcddf7ba1545e77fa5fd808ed51a298bde592f4f429d91f0f10b287960a4ccb449867096f19f10c6933f416e40e37c52af446

Download Submit
/data/data/com.picturewatch_webapp03/app_cash/BBAypda.json

Filesize
1005B

MD5
502f9e2a33f4783e8c17d3ea2982ad64

SHA1
c7ebfd7d0c5ef64f49c650ea6acd0b07d9f9fbc2

SHA256
f80b0e14468ae6e1d3e00a00120454451ebf6dc5ae50a1a0a7e5909c77d4e169

SHA512
7363bf23f1fc3bed7ba6a4418b0b915265fcf82c81ddec2f1fa8c0740d2984122429eb8686eae085e4e9dfd9296debfc2a3b547cb3697bfcc42229e2a8bdc412

Download Submit
/data/data/com.picturewatch_webapp03/files/.d

Filesize
307KB

MD5
4e73947cabb5db3f92ca85004981b754

SHA1
6d9667fdb0280ed2dcb782b4683e422a51bdc601

SHA256
6db94232e756b90ed437f1bc87dc38cf20fb2e7c7a19a5e40c6c17254b7e234c

SHA512
be8b500a7070af1dfb53b0cf1a7b327dadc4e163a6dad905496ac228c58cd1ed87b054533917924455d35e9b300683ae33e1bcdd91935a5dbae1d693c3e13d69

Download Submit
/data/user/0/com.picturewatch_webapp03/app_cash/BBAypda.json

Filesize
1KB

MD5
8e20ff18b4528b87290b9787c509637d

SHA1
56f22ecd8e3d2763b1fb2054aa1c29e9fbf2a13a

SHA256
62297dd67a4ad416a6a07f89a9f6197961bb2549811e5601da39420bec5eb774

SHA512
93f70ea4c346233c7634ebaaf8b647c3e8aac19ca2872f93da77a018bce23a3aaed9d4eb8723944c71b55a77b718a3de0abe4d59a078bbc8f2fd6f2e75722a28

Download Submit
/data/user/0/com.picturewatch_webapp03/app_cash/BBAypda.json

Filesize
1KB

MD5
dd02e4fd8a17c1b1073699c0e0c0edf1

SHA1
a785a149a0d95a0964271299e476bcc1472cd95c

SHA256
7eb62b290e3b9fdcff7ffafebbf8782f2526b19fa099d7c9e30fe700caa3bfa6

SHA512
7b1fd424661cb23009f1bfc9b68c98e122a37e250a424dbfd12b90d811a1c00f6ac7168952cf5178943bb2f3b060a82ddc1edff4badb9238b6c1c16ed28cb6f3

Download Submit
Anonymous-DexFile@0xcf678000-0xcf6fb940

Filesize
526KB

MD5
4e9c7fd611ab4ed49fcfab415526a4c4

SHA1
0767ce714cdb29037af72591b1798f927cdfac05

SHA256
27be0e7fb6540dda38c30d97b5fc28de37953668863f59e312313cb84a748d9c

SHA512
f1eba1b3108bc409bb0fe06138fd6e9fc92cdb58e3106b81fd8b681c899831b4a8d954b12b383b977aef7f1269bfd9708bb9c79e4c5f407e9cd18e0480b73116

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads