octo | f93eeaad751513ff277b1173fe891adec6951260e0e1f0967f5247882f1a1fc5 | Triage

Analysis

max time kernel
149s
max time network
151s
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
03/10/2024, 22:22

Sharing

Report Analysis Logs

General

Target

f93eeaad751513ff277b1173fe891adec6951260e0e1f0967f5247882f1a1fc5.apk
Size

2.4MB
MD5

84b876f05d004d268fb6834350bccfae
SHA1

14069914497991e7b0f8e11520f18d79a0bb12f4
SHA256

f93eeaad751513ff277b1173fe891adec6951260e0e1f0967f5247882f1a1fc5
SHA512

5b45e282bfea17d4076fb8add9fcdc1057a459e6af4d14250e584484611fff978ee1c967400a23d020752d396912ee55662058d697acc7d5ae0c704087392da6
SSDEEP

49152:Lh+Tdo8hHNuk6Df1s/Kfuof8pATcVd5CSyHQlgGBH4wC+Tw4b4q65logJM/zOSW4:OFXuxDWBVATMd5HlgGBH4/kbN6MgJM/P

Score

10^/10

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

Malware Config

Extracted

Family

octo

C2

https://dijitaldunyayenifikirlervegirisim.xyz/YjdkMWRjNTllNzZi/

https://teknolojininileriyeniliklerrehberi.xyz/YjdkMWRjNTllNzZi/

https://sanatvedogaltasarimlarincografyasi.xyz/YjdkMWRjNTllNzZi/

https://kulturvesanatprojelerindogalteknikler.xyz/YjdkMWRjNTllNzZi/

https://fotografvesanatgozlemlerinesinlen.xyz/YjdkMWRjNTllNzZi/

https://yemektariflerivedogalurunlerkulubu.xyz/YjdkMWRjNTllNzZi/

https://gezginlericinyenirotalarvetavsiyeler.xyz/YjdkMWRjNTllNzZi/

https://sporseverlericinyeniharaketlerrehberi.xyz/YjdkMWRjNTllNzZi/

https://bilimveteknolojionerileridunyasi.xyz/YjdkMWRjNTllNzZi/

https://egitimvegirisimcilikdunyasindan.xyz/YjdkMWRjNTllNzZi/

https://sanatveguncelprojelerplani.xyz/YjdkMWRjNTllNzZi/

https://dijitaloyunvegirisimcilikakademisi.xyz/YjdkMWRjNTllNzZi/

https://dogalhayatvetatilrehberiniz.xyz/YjdkMWRjNTllNzZi/

https://kisiselgelisimvesosyalmedyayonetimi.xyz/YjdkMWRjNTllNzZi/

https://yasamvedogalyontemlerklavuzu.xyz/YjdkMWRjNTllNzZi/

https://kitapvedijitalokumakulubu.xyz/YjdkMWRjNTllNzZi/

https://sinemavetelevizyonprojelerigozlemi.xyz/YjdkMWRjNTllNzZi/

https://oyunvegencgirisimcilergelisim.xyz/YjdkMWRjNTllNzZi/

https://fotografvegundelikgozlemplatformu.xyz/YjdkMWRjNTllNzZi/

https://yeniseyahatvedogalgeziler.xyz/YjdkMWRjNTllNzZi/

rc4.plain

Extracted

Family

octo

C2

https://dijitaldunyayenifikirlervegirisim.xyz/YjdkMWRjNTllNzZi/

https://teknolojininileriyeniliklerrehberi.xyz/YjdkMWRjNTllNzZi/

https://sanatvedogaltasarimlarincografyasi.xyz/YjdkMWRjNTllNzZi/

https://kulturvesanatprojelerindogalteknikler.xyz/YjdkMWRjNTllNzZi/

https://fotografvesanatgozlemlerinesinlen.xyz/YjdkMWRjNTllNzZi/

https://yemektariflerivedogalurunlerkulubu.xyz/YjdkMWRjNTllNzZi/

https://gezginlericinyenirotalarvetavsiyeler.xyz/YjdkMWRjNTllNzZi/

https://sporseverlericinyeniharaketlerrehberi.xyz/YjdkMWRjNTllNzZi/

https://bilimveteknolojionerileridunyasi.xyz/YjdkMWRjNTllNzZi/

https://egitimvegirisimcilikdunyasindan.xyz/YjdkMWRjNTllNzZi/

https://sanatveguncelprojelerplani.xyz/YjdkMWRjNTllNzZi/

https://dijitaloyunvegirisimcilikakademisi.xyz/YjdkMWRjNTllNzZi/

https://dogalhayatvetatilrehberiniz.xyz/YjdkMWRjNTllNzZi/

https://kisiselgelisimvesosyalmedyayonetimi.xyz/YjdkMWRjNTllNzZi/

https://yasamvedogalyontemlerklavuzu.xyz/YjdkMWRjNTllNzZi/

https://kitapvedijitalokumakulubu.xyz/YjdkMWRjNTllNzZi/

https://sinemavetelevizyonprojelerigozlemi.xyz/YjdkMWRjNTllNzZi/

https://oyunvegencgirisimcilergelisim.xyz/YjdkMWRjNTllNzZi/

https://fotografvegundelikgozlemplatformu.xyz/YjdkMWRjNTllNzZi/

https://yeniseyahatvedogalgeziler.xyz/YjdkMWRjNTllNzZi/

AES_key

Signatures

Octo
Octo is a banking malware with remote access capabilities first seen in April 2022.
banker trojan infostealer rat octo

Octo payload 2 IoCs

resource	yara_rule
behavioral1/memory/4247-0.dex	family_octo
behavioral1/memory/4220-0.dex	family_octo

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

stealth trojan evasion

Suppress Application Icon

pid	Process
4220	com.fall.rhythm

Loads dropped Dex/Jar 1 TTPs 2 IoCs

Runs executable file dropped to the device during analysis.

Download New Code at Runtime

ioc	pid	Process
/data/user/0/com.fall.rhythm/app_civil/Epl.json	4247	/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.fall.rhythm/app_civil/Epl.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.fall.rhythm/app_civil/oat/x86/Epl.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.fall.rhythm/app_civil/Epl.json	4220	com.fall.rhythm

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

Screen Capture

Keylogging

GUI Input Capture

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.fall.rhythm
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.fall.rhythm

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.fall.rhythm

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

description	ioc	Process
Framework service call	android.app.IActivityManager.setServiceForeground	com.fall.rhythm

Performs UI accessibility actions on behalf of the user 1 TTPs 4 IoCs

Application may abuse the accessibility service to prevent their removal.

Prevent Application Removal

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.fall.rhythm
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.fall.rhythm
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.fall.rhythm
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.fall.rhythm

Queries the mobile country code (MCC) 1 TTPs 1 IoCs

System Network Configuration Discovery

description	ioc	Process
Framework service call	com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone	com.fall.rhythm

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

description	ioc	Process
Intent action	android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS	com.fall.rhythm

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

User Evasion

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.fall.rhythm

Requests modifying system settings. 1 IoCs

description	ioc	Process
Intent action	android.settings.action.MANAGE_WRITE_SETTINGS	com.fall.rhythm

Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs

Broadcast Receivers

description	ioc	Process
Framework service call	android.app.IActivityManager.registerReceiver	com.fall.rhythm

Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs

Data Encrypted for Impact

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.fall.rhythm

com.fall.rhythm
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:4220
- /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.fall.rhythm/app_civil/Epl.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.fall.rhythm/app_civil/oat/x86/Epl.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4247

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

Broadcast Receivers

Foreground Persistence

Privilege Escalation

Defense Evasion

Download New Code at Runtime

Foreground Persistence

Hide Artifacts

Suppress Application Icon

User Evasion

Impair Defenses

Prevent Application Removal

Input Injection

Credential Access

Access Notifications

Input Capture

GUI Input Capture

Keylogging

Discovery

Software Discovery

Security Software Discovery

System Network Configuration Discovery

Lateral Movement

Collection

Access Notifications

Input Capture

GUI Input Capture

Keylogging

Screen Capture

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

Input Injection

Replay Monitor

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Downloads

/data/data/com.fall.rhythm/app_civil/Epl.json

Filesize
153KB

MD5
9f508680788a4badc5fcf7384377b406

SHA1
032a3036b29d5a18ab2ecc2cecfbf5f4d9f7bd99

SHA256
80b970e4ec5dcc3d7f36ba0cdbeecb7b667817bc050434886971732a03c08de6

SHA512
c50bb4584348ff23be111bc8a072c550b812c9e67e74353136783aff89040a6f1210c37dd031de3f0c42fb85b4fbb443e19dfebfcb09a12ea6f1bfec2749b5ad

Download Submit
/data/data/com.fall.rhythm/app_civil/Epl.json

Filesize
153KB

MD5
3c20811229938be0049fda1beb9b0b9c

SHA1
8601adbc45e2bb8e6b5b698b02ba0e9a96165e42

SHA256
7deb551ca3089f7b6c1744ed929f213ffe347591ee27b2907562860dd27891f9

SHA512
aa4509b8e6b7fa2a1ab65ad3042ff581ff9c02b6a821a9eedcef2ee2c434e4b6141a3581677eb6cf4cd83dd5eac8aa06eabd3cbc3d81ce958e8fa5ad40d85376

Download Submit
/data/user/0/com.fall.rhythm/app_civil/Epl.json

Filesize
451KB

MD5
bd947607828b557c111af92ce1c6ea7d

SHA1
0872b87710157d0f13361034ced8cee412a1dadc

SHA256
bb2760c00bf9efd9aaaa3e93a2ec1e4dfc754e605e1adb44dcb052b918ce0fe4

SHA512
49364f98f87ffca69001e0559415800cb826ca8b5b096807da8b2b3c7709b07e5c293f5e4c942b36cdf77e126bee061e1820fd3ac650ea2f56b09e3fb1c1aef4

Download Submit
/data/user/0/com.fall.rhythm/app_civil/Epl.json

Filesize
451KB

MD5
a53687735905831d0a73b74e0a1eff94

SHA1
d904bee3b5ff676f3cd77888c9693172bfd779c2

SHA256
3f22e7ae31cd2d283c9f66f4f3cb007fbbf326cc9b303fd9921197eebaa40732

SHA512
96101f27a6986d83e137a70dde5c5d7599c570aadc4e28c024fc513d4293f492680c4bb128e8043ba8dd55abf848a32d0592dc2cf1e9cf1ceb37108a88df0129

Download Submit