octo | 4f39e86fb8f39acbd92f15da4a3b4eb622b52493e5d4e6d7c396eea68bebb2de

Analysis

max time kernel
147s
max time network
156s
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
15-11-2024 22:03

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General

Target

4f39e86fb8f39acbd92f15da4a3b4eb622b52493e5d4e6d7c396eea68bebb2de.apk
Size

605KB
MD5

52d376b16ea81906c20b6c8eac33019d
SHA1

f31ddc22872fc4e9642ca8fce1b9be4d62d24233
SHA256

4f39e86fb8f39acbd92f15da4a3b4eb622b52493e5d4e6d7c396eea68bebb2de
SHA512

57d0f44a6f7fc2ffd1b4bd1305a0d0bd1521401d9d21d6cd65ae80e2ffb67ebe8676f39c85b55a59b3c50181664068e40fe1b640f92364af210ef8187f379696
SSDEEP

12288:CyKc0+BjazBkz9iP0Twew190mVgHl+NVEkals4hDLrMhdhT:CyK1+NaVkzcP0Trw1909H0jBalsIzgdd

Score

10^/10

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

Malware Config

Extracted

Family

octo

https://7bb13903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://4b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://34b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://64b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://74b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://894b6413903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b64139030754567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b64139033074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

https://94b641553903074567453981d0595033c23.com/YmZiMzU0OTU5NGIz/

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 2 IoCs

resource	yara_rule
behavioral1/files/fstream-3.dat	family_octo
behavioral1/memory/4317-1.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
4317	com.drawfarsym

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.drawfarsym/code_cache/secondary-dexes/1731708207155_classes.dex	4317	com.drawfarsym
/data/user/0/com.drawfarsym/code_cache/secondary-dexes/1731708207155_classes.dex	4342	/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.drawfarsym/code_cache/secondary-dexes/1731708207155_classes.dex --output-vdex-fd=42 --oat-fd=43 --oat-location=/data/user/0/com.drawfarsym/code_cache/secondary-dexes/oat/x86/1731708207155_classes.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.drawfarsym/code_cache/secondary-dexes/1731708207155_classes.dex	4317	com.drawfarsym

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

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.drawfarsym

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.drawfarsym

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.drawfarsym
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.drawfarsym
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.drawfarsym
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.drawfarsym

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.drawfarsym

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.drawfarsym

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.drawfarsym

Requests modifying system settings. 1 IoCs

evasion

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

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.drawfarsym

Schedules tasks to execute at a specified time 1 TTPs 1 IoCs

Application may abuse the framework's APIs to perform task scheduling for initial or recurring execution of malicious code.

execution persistence

Scheduled Task/Job

T1603

description	ioc	Process
Framework service call	android.app.job.IJobScheduler.schedule	com.drawfarsym

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.drawfarsym

com.drawfarsym
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)
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
PID:4317
- /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.drawfarsym/code_cache/secondary-dexes/1731708207155_classes.dex --output-vdex-fd=42 --oat-fd=43 --oat-location=/data/user/0/com.drawfarsym/code_cache/secondary-dexes/oat/x86/1731708207155_classes.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4342

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Scheduled Task/Job

T1603

Persistence

Event Triggered Execution

T1624

Broadcast Receivers

T1624.001

Foreground Persistence

T1541

Scheduled Task/Job

T1603

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.drawfarsym/cache/classes.dex

Filesize
446KB

MD5
1a1a47e66116cf523207402412ba6c5a

SHA1
1908e7d762072261a4d06182b9434536fb7506ce

SHA256
2c907b6dda4c75fadcb2f104bc9b659a480372846402f36c1cc26c2c568b6882

SHA512
0e32e9d5f9644877d59416932143b8f48cc98e27ab5f0a7b1b7d5d95582ad9bc0ee7c31fb9cef72dc5f95dab73afd0715b0fe4274a0f2df2290da710d0a43f67

Download Submit
/data/data/com.drawfarsym/code_cache/secondary-dexes/1731708207155_classes.dex

Filesize
1.1MB

MD5
886f51647085722e7b6f112c0c2d6ced

SHA1
ea28019273cf4c51d37c613dceac3e1e2656e1a5

SHA256
02fbce2d24686a16c21b880c07af3357533e2e3ad361a21b1057f5511ae5fc9b

SHA512
b3204dc5fe2b5c06016d15764eea6903c1f7bd171987bedea89d9fc6689bc118054a76f2c1125ecf7fed86f9f472859d361169bb992e9f3b9d7c8c20bc7899c3

Download Submit
/data/data/com.drawfarsym/files/profileInstalled

Filesize
24B

MD5
a34a1bd56ee2a495e61dab5d0a3933f7

SHA1
1797a37588d746cad16d447b605d916cc0619e9c

SHA256
169e1e7ad8c6868086bf68b3c483f9fdfc5370056b71c67255fdb3c5e62b5369

SHA512
6b8951c7aae4fe69b8d5f623f5e4e1fa82ec58a021fd6b4f02c4ff4804299a1a52aa9ef0f02420bf0de97517aee6301b49b94af5647e019ac621c855feefd592

Download Submit
/data/data/com.drawfarsym/files/profileinstaller_profileWrittenFor_lastUpdateTime.dat

Filesize
8B

MD5
cec7c3e295aaff7cfdfde7839a0bf36d

SHA1
5cb62fa226192b07af9d31b1152050b6664c42e5

SHA256
339260ebb43ab177c280245f8bde14a91bdbcf0f164243c7935152ff3d4bb847

SHA512
98153ad800709f4b1392e0abc496fc992384a518dfb15b75912c688d80ade16ee7f4bf93bb0f7b9c3ea166a346159f29372c308a7ecc20255bb5911a9135122f

Download Submit
/data/data/com.drawfarsym/no_backup/androidx.work.workdb

Filesize
4KB

MD5
f2b4b0190b9f384ca885f0c8c9b14700

SHA1
934ff2646757b5b6e7f20f6a0aa76c7f995d9361

SHA256
0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

SHA512
ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

Download Submit
/data/data/com.drawfarsym/no_backup/androidx.work.workdb-journal

Filesize
512B

MD5
f2417a0594c62fc46ff8d2989e3c4b34

SHA1
41b768e3d515294f3baa203aa801bc903af1aa52

SHA256
499262aaef881585213ef78299f3f7d49feb74ebc9ed40a2d0374e0a1027277a

SHA512
343e3e99b318492b7f84feda758477a150a256bff4fdcf8c01d87772fe148b9f48df2f87dc9a08461958270fd2132d990b1b1dd4985240900f6cb16a65c10875

Download Submit
/data/data/com.drawfarsym/no_backup/androidx.work.workdb-shm

Filesize
32KB

MD5
bb7df04e1b0a2570657527a7e108ae23

SHA1
5188431849b4613152fd7bdba6a3ff0a4fd6424b

SHA256
c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

SHA512
768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

Download Submit
/data/data/com.drawfarsym/no_backup/androidx.work.workdb-wal

Filesize
16KB

MD5
17583dc5df15bb9386da26d88b7071bd

SHA1
010be85bafa89c1fa42bcec9d1413c0c44c1c4e6

SHA256
44305fdecd08ecf3852581d822928e89394cee8da343b4f955b8303a434a4a6d

SHA512
f0a5e0bee2f8ccb953ca366fdbe6c2697c94fa4bb9cc4772ae137c4eee460984be31d887385dbe5cde8727ed7b39af29d3006b22c2f873f7e0fc6033e5eba3d2

Download Submit
/data/data/com.drawfarsym/no_backup/androidx.work.workdb-wal

Filesize
116KB

MD5
79d66f290f348d194c8d4046e61f7dc7

SHA1
7e6f49648403d0e4fb4936ef07c5f729a0014c0f

SHA256
7dfc11fa449882d4c81b4d23e56602f1128a4b8b84f25bc953e5eae494b11ba5

SHA512
97f66558d6fe590ecfa2e5e853a5d0233b2e6ed2b895cc6e0a74fb9b9d60f10dc8345017156b7c2d6a894e365ab898a239eb0bb2a53da0c8598933c2556f378d

Download Submit
/data/data/com.drawfarsym/no_backup/androidx.work.workdb-wal

Filesize
124KB

MD5
26e74051a9cdb90d10d0687a5459b64b

SHA1
093bdf025dc327f1e1d8bbecb66632b1a09328f4

SHA256
a933530873daea6f6b45b7459797c1c86280dd390d3fb094ef006078376f8e13

SHA512
91528eb741b4f4dc88e1a108d4b002b7b8a948a81ac16bd7591f974e78cf02227c0c8e0f0aec341229318e5d528e48ee34b0f0e5e6dbec7193fee8d70ae3c643

Download Submit
/data/data/com.drawfarsym/no_backup/androidx.work.workdb-wal

Filesize
177KB

MD5
018cf069d6b607ee5ac63dc22efc2092

SHA1
7cb66cae32031220f23fe56ffe85430641e51552

SHA256
394ed37d019031ea5bd092ffca011105f230877ec3a24ac2b3516fc9d4ba4785

SHA512
acb3c239fe0494f708835a92c73dd1cf539dc1b6212401235fbc4d4aeec41e3e68771703df85f7c6b8792cf722118fb8a1e24490796affb26d9d7afd8cd7d848

Download Submit
/data/misc/profiles/cur/0/com.drawfarsym/primary.prof

Filesize
111B

MD5
d08e6a6aca95d9e7c02d0c45fd981359

SHA1
7db0821f0b8c5de9c402228a9f6bdf38645462d1

SHA256
8c093f6c8881cc2a8acb167a072e07b6ec5f971a1cab5bde19ac2dfc5da28e2c

SHA512
574949c9a8324e2b6f9b90b9cd9c43cd149ba79522a46aefe0266f3e090719efd00cd6268e1a561e113a93dcbb7eb0f55f7fdee6170e44af85cc848d29cbd8a2

Download Submit
/data/misc/profiles/cur/0/com.drawfarsym/primary.prof

Filesize
121B

MD5
8bc7e7dab836805b923d6bd0dc63261c

SHA1
73b1c889d40bbf5dfef721efa02529e1ea86eb58

SHA256
89f6be57d7c24eb0343832c308addec3e6438760d54508783a8482916c54d096

SHA512
dfbd057496eb5c63ef0ae64b9751696acbc0104ab820d0ceda213f3c0fd58d690f62a68a2da18783753c0d283726c0efcb63cacd5ef3afa8767c8b1cefeb0bc4

Download Submit
/data/user/0/com.drawfarsym/code_cache/secondary-dexes/1731708207155_classes.dex

Filesize
1.1MB

MD5
8257522fd301cc5d5fb9fd6731fb858a

SHA1
ce821896a8f0ecf7ca39d0df67397fcf2870996f

SHA256
4b7e29b9662eea33305d0cc6e6538bb78c72ef017d7b7604b9e5d7795f930a34

SHA512
2a49f74be8c0ce716650096862990e5143f9bedc8e48e9534df2949672eabe6bbc62875e33e14d338312343ee2688b7d1a2f3c6e9730f599bd9e28b79b1f9930

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads