octo | 3fe70e033a96b3cf854d8d1d3d00a9f092bbdc8d9dd7493557fdf52ac5173017

Analysis

max time kernel
21s
max time network
37s
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 02:16

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General

Target

3fe70e033a96b3cf854d8d1d3d00a9f092bbdc8d9dd7493557fdf52ac5173017.apk
Size

7.5MB
MD5

a96e15456f4399193adb91ce4e8fc0c7
SHA1

a2b1dd3c648b0b0191fd4888a5de3a1dd6840dc2
SHA256

3fe70e033a96b3cf854d8d1d3d00a9f092bbdc8d9dd7493557fdf52ac5173017
SHA512

d1f6a8e617aade56e95ae5ab7a3d196768e3bebee1e9390c8381b9e6e2bf4df38e4a58d69bc728b8599f65e36e3b99005f3c9feb0fa8217a8ca0eec8e3d191bd
SSDEEP

98304:MFjJ5iSRGGIVKd0ozb1wnZ1fVe3j7URsWKCNvSGvtti/:MdJr8UeozbmZ1duj7URXhvm/

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/4275-1.dex	family_octo

Checks Android system properties for emulator presence. 1 TTPs 1 IoCs

evasion

System Checks

T1633.001

description	ioc	Process
Accessed system property	key: ro.product.model	com.usbwriting_sync2

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.usbwriting_sync2/app_way/HWGBHX.json	4300	/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.usbwriting_sync2/app_way/HWGBHX.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.usbwriting_sync2/app_way/oat/x86/HWGBHX.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.usbwriting_sync2/app_way/HWGBHX.json	4275	com.usbwriting_sync2
Anonymous-DexFile@0xd52f8000-0xd537b794	4275	com.usbwriting_sync2

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.usbwriting_sync2
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.usbwriting_sync2

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.usbwriting_sync2

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.usbwriting_sync2

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.usbwriting_sync2

Queries the unique device ID (IMEI, MEID, IMSI) 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.usbwriting_sync2

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.usbwriting_sync2

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.usbwriting_sync2

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.usbwriting_sync2

com.usbwriting_sync2
1⤵
- Checks Android system properties for emulator presence.
- 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)
- 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:4275
- /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.usbwriting_sync2/app_way/HWGBHX.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.usbwriting_sync2/app_way/oat/x86/HWGBHX.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4300

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

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.usbwriting_sync2/.global.com.usbwriting_sync2

Filesize
48B

MD5
046a414913add6f5bb60072c7db819b6

SHA1
451ee4f6809260aec622d772fd329c7d0297a842

SHA256
b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a

SHA512
4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

Download Submit
/data/data/com.usbwriting_sync2/app_way/HWGBHX.json

Filesize
1014B

MD5
b7f287085c259cba73b05b9345fe7088

SHA1
fca51f1179bb8f280b5fa1e5b46f2afe5e54a69b

SHA256
3b1f2f3adff247e1ce30f9f0897143d51ddaaeea55285c257f3a1f8e50ad7c8d

SHA512
6ce9614b4c038867811bedd442928f52d40031f245b9df39a806126e99dcdc74c930d19591792f309069d6b7f628285ab682077ab07333b3376bec34d258a339

Download Submit
/data/data/com.usbwriting_sync2/app_way/HWGBHX.json

Filesize
1014B

MD5
7d9e34efc07bda8ca8a1155f6e4b2f38

SHA1
32a9e0b3b08bfccffe1759ff2b68d3f51c2fb957

SHA256
ad8cef06799da288eeb28a70bed662446b0388a185f689bc0fd556481064b060

SHA512
59521e5391bc92bb6aefe26fb41c29391112789bbb742730317111757ed9d8e803c1eb6d23dba955f180ed596b026b54c37241f5ff11b19e7436b887263fbcbd

Download Submit
/data/data/com.usbwriting_sync2/files/.r

Filesize
307KB

MD5
4e73947cabb5db3f92ca85004981b754

SHA1
6d9667fdb0280ed2dcb782b4683e422a51bdc601

SHA256
6db94232e756b90ed437f1bc87dc38cf20fb2e7c7a19a5e40c6c17254b7e234c

SHA512
be8b500a7070af1dfb53b0cf1a7b327dadc4e163a6dad905496ac228c58cd1ed87b054533917924455d35e9b300683ae33e1bcdd91935a5dbae1d693c3e13d69

Download Submit
/data/user/0/com.usbwriting_sync2/app_way/HWGBHX.json

Filesize
1KB

MD5
51ad8aa4876af77c2fc17e37ec81704f

SHA1
c7e07403a8d9ef55c218e1341a97bb719111706a

SHA256
6e811a957ec5cfcd8aa4eedfcb69b32053fd37aad16e7e086a0ab5ec28526269

SHA512
cd6a7d7f9b126e6c3e8c454152f4a34d405f233b3fea22603ae98a7d62cad0cf3db5da1c22efd234f27d71658c483ac5f408d49d08f6e6f2a3e22a9907505085

Download Submit
/data/user/0/com.usbwriting_sync2/app_way/HWGBHX.json

Filesize
1KB

MD5
0191e4cd0cd4c711aafa1cea7646e271

SHA1
e5c90e20f4372bca35db1ab5236ce26a7d71aad7

SHA256
eb16f4ec8704a92d1af58841c2045e65170dbcdb3383f68548302f332c8cd903

SHA512
58c3bf0df7f0f5bebb8e7152afad7e2a0e4750413bb1d439e23d2118d37c4943fed0e92f9e83dda8a3212d42c71c82738ba08f42e0b12d211776606ffb14c33a

Download Submit
Anonymous-DexFile@0xd52f8000-0xd537b794

Filesize
525KB

MD5
1dda282fc5f36a832e846b9db82e6d26

SHA1
0c933b5b0e9b5808aa4356d601a18d79d277719e

SHA256
7f3fef00f04e1c211b8752b8bcd3e937ce0a604eedc896120eef2cec426730e9

SHA512
b33aecd2ce1b620f4cda916814abf81566ed4a376cd906df29c53cdb59dc76d427d609f17ecb877b773c4c3b16f6ae1e495bcc6dfd1f424006761bfadb1373ee

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads