octo | 64690efccbf5fdc7d88d41e8fd68efc5e26588d99946e8238f99253e33b66cbf

Analysis

max time kernel
148s
max time network
154s
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
23-01-2025 22:02

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General

Target

64690efccbf5fdc7d88d41e8fd68efc5e26588d99946e8238f99253e33b66cbf.apk
Size

1.9MB
MD5

9e435740ed58f58ad7542459cd4f2b97
SHA1

34a6ee9a397db545bd9e032e786a2f019d42f758
SHA256

64690efccbf5fdc7d88d41e8fd68efc5e26588d99946e8238f99253e33b66cbf
SHA512

ec04ed19a83b0cb3886adaa2fcf3676fd9655cf0ba3d2b5cf458d10f9bfd4464710bca869161c542f85dac0846c20d2f5b7d86384c69297d4f4b2118ab15bebc
SSDEEP

49152:iajP9QzNgrf3icM4Vn7ty63rdb7m2muLrkwMWpVxeNKelflB:njP9YW7Sb4VD3rdb7lkDYRellB

Score

10^/10

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

Malware Config

Extracted

Family

octo

https://karakterolipsbilgilendirme.xyz/hxDNtg7DB3tk/

https://karakterolipsdostlukhik.xyz/hxDNtg7DB3tk/

https://karakterolipssinemaevreni.xyz/hxDNtg7DB3tk/

https://karakterolipssanatvesahne.xyz/hxDNtg7DB3tk/

https://karakterolipskulturkonusu.xyz/hxDNtg7DB3tk/

https://karakterolipstarihiyolu.xyz/hxDNtg7DB3tk/

https://karakterolipsmasallar.xyz/hxDNtg7DB3tk/

https://karakterolipskonferansi.xyz/hxDNtg7DB3tk/

https://karakterolipsgezegenhik.xyz/hxDNtg7DB3tk/

https://karakterolipsdunyasi.xyz/hxDNtg7DB3tk/

https://karakterolipsshowsanat.xyz/hxDNtg7DB3tk/

https://karakterolipsicimsessiz.xyz/hxDNtg7DB3tk/

https://karakterolipsfelsefesi.xyz/hxDNtg7DB3tk/

https://karakterolipsyolculugu.xyz/hxDNtg7DB3tk/

https://karakterolipsrenkleri.xyz/hxDNtg7DB3tk/

https://karakterolipssunumlar.xyz/hxDNtg7DB3tk/

https://karakterolipsduygular.xyz/hxDNtg7DB3tk/

https://karakterolipsgizemleri.xyz/hxDNtg7DB3tk/

https://karakterolipskaynak.xyz/hxDNtg7DB3tk/

https://karakterolipsseruven.xyz/hxDNtg7DB3tk/

rc4.plain

Extracted

Family

octo

https://karakterolipsbilgilendirme.xyz/hxDNtg7DB3tk/

https://karakterolipsdostlukhik.xyz/hxDNtg7DB3tk/

https://karakterolipssinemaevreni.xyz/hxDNtg7DB3tk/

https://karakterolipssanatvesahne.xyz/hxDNtg7DB3tk/

https://karakterolipskulturkonusu.xyz/hxDNtg7DB3tk/

https://karakterolipstarihiyolu.xyz/hxDNtg7DB3tk/

https://karakterolipsmasallar.xyz/hxDNtg7DB3tk/

https://karakterolipskonferansi.xyz/hxDNtg7DB3tk/

https://karakterolipsgezegenhik.xyz/hxDNtg7DB3tk/

https://karakterolipsdunyasi.xyz/hxDNtg7DB3tk/

https://karakterolipsshowsanat.xyz/hxDNtg7DB3tk/

https://karakterolipsicimsessiz.xyz/hxDNtg7DB3tk/

https://karakterolipsfelsefesi.xyz/hxDNtg7DB3tk/

https://karakterolipsyolculugu.xyz/hxDNtg7DB3tk/

https://karakterolipsrenkleri.xyz/hxDNtg7DB3tk/

https://karakterolipssunumlar.xyz/hxDNtg7DB3tk/

https://karakterolipsduygular.xyz/hxDNtg7DB3tk/

https://karakterolipsgizemleri.xyz/hxDNtg7DB3tk/

https://karakterolipskaynak.xyz/hxDNtg7DB3tk/

https://karakterolipsseruven.xyz/hxDNtg7DB3tk/

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 2 IoCs

resource	yara_rule
behavioral1/memory/4338-0.dex	family_octo
behavioral1/memory/4311-0.dex	family_octo

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

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
4311	com.letter.slot

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.letter.slot/app_luxury/wyBIESy.json	4338	/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.letter.slot/app_luxury/wyBIESy.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.letter.slot/app_luxury/oat/x86/wyBIESy.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.letter.slot/app_luxury/wyBIESy.json	4311	com.letter.slot

Makes use of the framework's Accessibility service 4 TTPs 2 IoCs

Retrieves information displayed on the phone screen using AccessibilityService.

collection defense_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.letter.slot
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.letter.slot

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.letter.slot

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.

defense_evasion persistence

Foreground Persistence

T1541

description	ioc	Process
Framework service call	android.app.IActivityManager.setServiceForeground	com.letter.slot

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.letter.slot
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.letter.slot
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.letter.slot
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.letter.slot

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.letter.slot

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.letter.slot

Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs

defense_evasion

User Evasion

T1628.002

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.letter.slot

Requests modifying system settings. 1 IoCs

defense_evasion

description	ioc	Process
Intent action	android.settings.action.MANAGE_WRITE_SETTINGS	com.letter.slot

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.letter.slot

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.letter.slot

com.letter.slot
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).
- Requests modifying system settings.
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Uses Crypto APIs (Might try to encrypt user data)
PID:4311
- /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.letter.slot/app_luxury/wyBIESy.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.letter.slot/app_luxury/oat/x86/wyBIESy.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4338

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

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Downloads

/data/data/com.letter.slot/app_luxury/wyBIESy.json

Filesize
153KB

MD5
ae9f50ff9b2dca2929496f6b6ffce505

SHA1
748498467f10235839d16825bad70fc14306fe98

SHA256
1be5f1e2d5b0dd68be96c5406806652c0ef1fae6066de55060fdfdeb4e36014f

SHA512
8fc2964ed7fd3ec5d500bec5482649eea5388f63dde80201570fabdf535acdc24386f1c7a516449340bdcbef21338501faf538edd022bb97747697c838025225

Download Submit
/data/data/com.letter.slot/app_luxury/wyBIESy.json

Filesize
153KB

MD5
d636abaf5ad9438992527803d3416aee

SHA1
1c6f621b9d6b4483f1d3f20107872570030735aa

SHA256
0f2a2e6e0e4929051a27b46ad2f9895a1ccd7b492b24d847e5a48d9cd1717ce3

SHA512
c1b64ca5a1a2f48bb6d429129935ab9b8c5c94aa0dc0cd6e27466db63ba94fea7f21eb2a10cb144a7b02c1ab7a1a8c71e4ee941e3b039d57a04b9018a50995fb

Download Submit
/data/user/0/com.letter.slot/app_luxury/wyBIESy.json

Filesize
450KB

MD5
46de089e48a5cde2c6cc34c6dc4b87e4

SHA1
bc8aec75d0e5347bbb5a0d7459fb35106345327c

SHA256
9b6c00bc6bbdb27c7de1acc558924b32d1ac81c0d0199620313187a7d35478a8

SHA512
6c6cdbfa56c8b0827625d0d98737beaef7a92a916e9c6f63a9c0bf469867f358106eaa483a116a16c02f64c0102d5750a7333e8a408cbf65f21c477fd01eaf08

Download Submit
/data/user/0/com.letter.slot/app_luxury/wyBIESy.json

Filesize
450KB

MD5
92a051bd9c7949d99afae224de781d5b

SHA1
bc37b5f26b38219048ba48a44f789b591630b627

SHA256
12ee632399621b85a55332a6a307f26d7dda3b439fa4255d80a7f24327fed715

SHA512
62d49c54bae12c8a949f7af62c7afd7febd863dfcc0eae0c67a2337b6acd14b86ddbd45630d53f2ea84e13f4520479c8a3cb866683f12839c61dd84cdf03e79d

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads