octo | 66b9c7721f219ec48312d8b02db8b68c4d4129f5724a93d27d73bf0c7cf34be4

Analysis

max time kernel
148s
max time network
162s
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
25-11-2024 22:00

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General

Target

66b9c7721f219ec48312d8b02db8b68c4d4129f5724a93d27d73bf0c7cf34be4.apk
Size

4.7MB
MD5

04a296d15ee7d9434fbcb2df8a910dad
SHA1

b3efab1601128434efd1f5800aa0e967c64ae7df
SHA256

66b9c7721f219ec48312d8b02db8b68c4d4129f5724a93d27d73bf0c7cf34be4
SHA512

6ce3b1c5f7273c75e547e60c06cfe5631a93ae9fc74df27258a5405c1633f5e5c18a27e99b974edbb1f4d33c3a46eec3176007f9c67cefbed485600ac500e76a
SSDEEP

98304:GW7XALqwKZH2vCHMCh+2TfJmGRgxBDkS/gGxA/FRJd7OPL3Nb8I8y:RcxKZH2vCHMCM4gbDkVP/FHtOj3R8I7

Score

10^/10

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

Malware Config

Extracted

Family

octo

https://94b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b641390330721556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://694b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://694b64c9b41c17a229d92146d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://694b64c9b41c17a229d92156d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://994b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://4394b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

rc4.plain

Extracted

Family

octo

https://94b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b641390330721556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://94b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://694b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://694b64c9b41c17a229d92146d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://694b64c9b41c17a229d92156d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://994b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://4394b64c9b41c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

https://74b6c9bebf541c17a229d921556d14a4ffd4.com/MWZjODg0YjhhMWVi/

DES_key

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-7.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
4272	com.bookjust7

Loads dropped Dex/Jar 1 TTPs 5 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/user/0/com.bookjust7/app_dex/classes.dex	4272	com.bookjust7
/data/user/0/com.bookjust7/app_dex/classes.dex	4298	/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.bookjust7/app_dex/classes.dex --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.bookjust7/app_dex/oat/x86/classes.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.bookjust7/app_dex/classes.dex	4272	com.bookjust7
/data/user/0/com.bookjust7/cache/srbjrxznjcjv	4272	com.bookjust7
/data/user/0/com.bookjust7/cache/srbjrxznjcjv	4272	com.bookjust7

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.bookjust7
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.bookjust7

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.bookjust7

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.bookjust7

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.bookjust7
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bookjust7
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bookjust7
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bookjust7

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.bookjust7

Queries the unique device ID (IMEI, MEID, IMSI) 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.bookjust7

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.bookjust7

Requests modifying system settings. 1 IoCs

evasion

description	ioc	Process
Intent action	android.settings.action.MANAGE_WRITE_SETTINGS	com.bookjust7

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.bookjust7

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.bookjust7

com.bookjust7
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:4272
- /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.bookjust7/app_dex/classes.dex --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.bookjust7/app_dex/oat/x86/classes.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4298

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.bookjust7/app_dex/classes.dex

Filesize
3KB

MD5
69192bf18834f87f0e2cf876a7422357

SHA1
4551783d3b735c138ad67cb040b34ea38d3721ad

SHA256
da8c08ef5847e9597904af73e61472781f5d92e0866abfe1d89342a58e98c1ac

SHA512
157ae1ce6ca44db2e4cf1386d7716baba60d8ad566e32bf48370057eeaa29e14384ad38331334b624d08a7643393f868eacb545f0130f2f5d527ef3ccaae5db7

Download Submit
/data/data/com.bookjust7/cache/classes.dex

Filesize
1KB

MD5
37b331af9f0b7823c157a8c62da1995c

SHA1
38aee8856b2287ca261830e0a92243b5d7b68f8c

SHA256
feee67d2f3a59a6e7c8516c3ec81d424ca0fc1af15c0d8f5595a6645c6d65fff

SHA512
2a8ea26b6c4f6df557021c5270c0eef6dac647e285e38f03ac2c834e95a1020fefb2b9f852f9c8a5a30d241b670438442440ca68fd2f700962bdb207687daec1

Download Submit
/data/data/com.bookjust7/cache/classes.zip

Filesize
1KB

MD5
71479d237b1ca017d27c7c72eea49119

SHA1
9ea740364667ec726f9abec628fca66a8bdd593a

SHA256
636a6a48f5c4e2fee45b945f49096a336fdd0f207b623d301af3544f84d45d07

SHA512
a2db0620f40ba9d75dd2faa00210a32de51640b500dca7ef41d30f14e96348d62d571f9b148946724f9ff300ead7ecaa05a5d2477ba991f6f826ff81499fa5f3

Download Submit
/data/data/com.bookjust7/cache/oat/srbjrxznjcjv.cur.prof

Filesize
422B

MD5
75816f5a79bb01a154dd5afb71a6e64d

SHA1
b3d4c67f545cf306441610eb89a64c16ddcfb019

SHA256
004b7810c03877c71c9e02596e93c4596077bca0279b8babbba9b8704bd5470e

SHA512
6974cfad51da8c55954ab88f67527433a2986d755cddb3f649037fedd97db0c2aa94205dd58c1cac5bc838a0c844ba8d98802d30eeb2e73c858649b0ed831b6d

Download Submit
/data/data/com.bookjust7/cache/srbjrxznjcjv

Filesize
1.4MB

MD5
012e4e7b2c7cfbc183c648f3c2fbbae2

SHA1
6d7cb419e18fe321b67c3a9cdef67f885421e50d

SHA256
45439725b62c64ee4b312ab5c4b062ba7a2882d4d9be7a44a1dfd1f63465d04f

SHA512
cdc7e4877917748281a17abaafe8dd2f5585e3a0ffcaa65e3f22d91f777227b34e5399e75cee2226736a0b56ca52b2deb1248b7177d645d96b4b9e137a6b7e30

Download Submit
/data/user/0/com.bookjust7/app_dex/classes.dex

Filesize
3KB

MD5
bd5e894ed3712a5e41839d9deb9ec5e5

SHA1
354fbf2e35c8c586dd8d316fb1e36c02ab11a194

SHA256
5c1661ca8b843012db8cf5f2adbd5c6f97c8eff28a67885301d3e314ae31d857

SHA512
896070bfd7796a52e5ac3e7abbf29779cc9142463a60fc12243ef3dcd114eebab4657722d96b743c8c094ac84e0b8ef3c5d7164704989a531c58f20e4935a15d

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads