Malware Analysis Report

2024-09-09 13:49

Sample ID 240705-pqf54aybql
Target 89198e78d1b86dbf25e078023cc583fc.apk
SHA256 89e4dd013e4573f80d418f29c6334cadb9ee260a4c5aadf466222d4df4e6f910
Tags
octo banker collection credential_access discovery evasion impact infostealer persistence rat stealth trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

89e4dd013e4573f80d418f29c6334cadb9ee260a4c5aadf466222d4df4e6f910

Threat Level: Known bad

The file 89198e78d1b86dbf25e078023cc583fc.apk was found to be: Known bad.

Malicious Activity Summary

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

Octo

Octo payload

Removes its main activity from the application launcher

Queries the phone number (MSISDN for GSM devices)

Loads dropped Dex/Jar

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

Makes use of the framework's Accessibility service

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

Acquires the wake lock

Requests dangerous framework permissions

Makes use of the framework's foreground persistence service

Performs UI accessibility actions on behalf of the user

Declares services with permission to bind to the system

Requests accessing notifications (often used to intercept notifications before users become aware).

Reads information about phone network operator.

Requests modifying system settings.

Queries the mobile country code (MCC)

Declares broadcast receivers with permission to handle system events

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

Uses Crypto APIs (Might try to encrypt user data)

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

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-07-05 12:31

Signatures

Declares broadcast receivers with permission to handle system events

Description Indicator Process Target
Required by device admin receivers to bind with the system. Allows apps to manage device administration features. android.permission.BIND_DEVICE_ADMIN N/A N/A

Declares services with permission to bind to the system

Description Indicator Process Target
Required by accessibility services to bind with the system. Allows apps to access accessibility features. android.permission.BIND_ACCESSIBILITY_SERVICE N/A N/A
Required by notification listener services to bind with the system. Allows apps to listen to and interact with notifications on the device. android.permission.BIND_NOTIFICATION_LISTENER_SERVICE N/A N/A

Requests dangerous framework permissions

Description Indicator Process Target
Allows an application to write to external storage. android.permission.WRITE_EXTERNAL_STORAGE N/A N/A
Allows an application to receive SMS messages. android.permission.RECEIVE_SMS N/A N/A
Allows an application to read SMS messages. android.permission.READ_SMS N/A N/A
Allows an application to send SMS messages. android.permission.SEND_SMS N/A N/A
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call. android.permission.CALL_PHONE N/A N/A
Allows an application to read or write the system settings. android.permission.WRITE_SETTINGS N/A N/A
Allows read only access to phone state, including the current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device. android.permission.READ_PHONE_STATE N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-05 12:31

Reported

2024-07-05 12:34

Platform

android-x86-arm-20240624-en

Max time kernel

179s

Max time network

130s

Command Line

com.slowshel

Signatures

Octo

banker trojan infostealer rat octo

Octo payload

Description Indicator Process Target
N/A N/A N/A N/A

Removes its main activity from the application launcher

stealth trojan evasion
Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/com.slowshel/cache/cedzzialvsni N/A N/A
N/A /data/user/0/com.slowshel/cache/cedzzialvsni N/A N/A

Makes use of the framework's Accessibility service

collection evasion credential_access
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId N/A N/A

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

banker discovery

Queries the phone number (MSISDN for GSM devices)

discovery

Acquires the wake lock

Description Indicator Process Target
Framework service call android.os.IPowerManager.acquireWakeLock N/A N/A

Makes use of the framework's foreground persistence service

evasion persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A

Performs UI accessibility actions on behalf of the user

evasion
Description Indicator Process Target
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A

Queries the mobile country code (MCC)

discovery
Description Indicator Process Target
Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone N/A N/A

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

discovery

Requests accessing notifications (often used to intercept notifications before users become aware).

collection credential_access
Description Indicator Process Target
Intent action android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS N/A N/A

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

evasion
Description Indicator Process Target
Intent action android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS N/A N/A

Requests modifying system settings.

evasion
Description Indicator Process Target
Intent action android.settings.action.MANAGE_WRITE_SETTINGS N/A N/A

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

persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.registerReceiver N/A N/A

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal N/A N/A

Processes

com.slowshel

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 216.58.204.74:443 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
US 1.1.1.1:53 usomapompaliyorum.com udp
US 1.1.1.1:53 basgaancosturuyor.com udp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
US 1.1.1.1:53 bassganndomaingitti.com udp
US 1.1.1.1:53 basgaaanpompaaa.com udp
US 1.1.1.1:53 usomukarimyaptimbasgaaan.com udp
US 1.1.1.1:53 biribasganidurdursunn.com udp
RU 193.143.1.9:443 biribasganidurdursunn.com tcp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.200.46:443 android.apis.google.com tcp
RU 193.143.1.9:443 biribasganidurdursunn.com tcp
RU 193.143.1.9:443 biribasganidurdursunn.com tcp
RU 193.143.1.9:443 biribasganidurdursunn.com tcp
RU 193.143.1.9:443 biribasganidurdursunn.com tcp

Files

/data/data/com.slowshel/cache/cedzzialvsni

MD5 d2e9bee71e1b1d930a57571a43ea9d52
SHA1 816ba2a8e769871b069b4b95e915f7c2590961e1
SHA256 aac193050bee17d91817a743dc17fa95b4e32f6dd8dc09a36669d4beb56bc113
SHA512 943ca0d549e162bb582487471ede2c8cacb549719f94e645a1dc67f9bd7e3abf2414a64c4195073f2c0f7e20557acbeb7d39f5083b50e2c9361ca4a10d2e10dc

/data/data/com.slowshel/kl.txt

MD5 d65c3b71c85c5ed9caf480e9245bc05d
SHA1 48b8580079e270446c1bc30989dd3caff90f40a6
SHA256 7e11037989342fcd7ca60200869c4eb73c9a5ae3309b1c3dcf8485560c89300b
SHA512 16d3a00bfff1d886325df6df531f5be4f0bbe38a152bcc7eff85b9afe67dc8813b4f68759ba670397b15339a727121e99510121185e6bc619def256d0a50d85c

/data/data/com.slowshel/kl.txt

MD5 5d4e80bdd65c3d64e0a1edb264ecdd40
SHA1 75a4375d6cc1569b8bbd3c78d167c9521ba2de68
SHA256 9252148ddc3997e23ab822c428215ab023ad27f5fef3cd55c0db8d35fca6ec5b
SHA512 a8e890ed6d62bfa5c346c3468a87824b1cc2d06b7e7ff2153efef302e5a55bc4cb5a929772d7798e5e55e32a314a6afa6674e07c56216bc97c422575b11671f2

/data/data/com.slowshel/kl.txt

MD5 e62f70f6297bdf118b8cbc91dbcf9b7c
SHA1 17da48ab615bbce11337079f88e90c4dc6bdeaa6
SHA256 cd96561e48d78e9d4ad3578b09171904503cc89927a97e46f1ef5d426b036411
SHA512 9b89901b06dfb59b275440ef00eaee5f6fe57e87439926d2c601b2e97881c5131de0b309b171cc3bf962f08859d87306d5fe8cf7643a97c2be25b29883eb3898

/data/data/com.slowshel/kl.txt

MD5 92c6193a6cedc2bf59262d58fc011f54
SHA1 10094b61586bd2b3adb3a7fbb4030887edf5ca16
SHA256 62274c17cdb3f8f48bca86dd411da83bac27c0a58da24466e6f0c448afcba32a
SHA512 974b4938f7bad033891e2859cf5942b2bc5a864137d912a797132460f5b302348bb852ca1ad87f1f56c3bf9e9966ebcab69d311477755c3fdc8b8b065a70579d

/data/data/com.slowshel/kl.txt

MD5 e9e8ec3d60123126eafef1bd2a844da4
SHA1 1acac62c5390d32d6ce5a71a5ed0712ca67f25a1
SHA256 a0b306d8e7e79321c08f7b77c23792997bb065e3f4b4f343a42f94cad01229eb
SHA512 b1fe0ae5df9b4dd12177189276d3831f06f2df9fafe4bd8dbf0ae31c500c2971e570a535e8d650596130f5d0e2dbf40e99b939bb19f7808d736b7077f0ec5700

/data/data/com.slowshel/cache/oat/cedzzialvsni.cur.prof

MD5 74f0294ef083f73a80fe2c078f0d8ab2
SHA1 0cb9b0a222ebe97093caddd4233ad04d4ce7c17a
SHA256 d821d58279e5755dc64d83d19bfdde88fd07875b0750bfa662a603a72d022110
SHA512 195e6e32cfbf1c3e1217a5e4f00407938534ad853efe964c50aac5731680e4bdfc02b67833b4b101416c261015e37a93dbe6c4ee4ffa9d59a81019f7b9188401

/data/data/com.slowshel/.qcom.slowshel

MD5 046a414913add6f5bb60072c7db819b6
SHA1 451ee4f6809260aec622d772fd329c7d0297a842
SHA256 b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a
SHA512 4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-05 12:31

Reported

2024-07-05 12:34

Platform

android-x64-20240624-en

Max time kernel

66s

Max time network

140s

Command Line

com.slowshel

Signatures

Octo

banker trojan infostealer rat octo

Octo payload

Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/com.slowshel/cache/cedzzialvsni N/A N/A
N/A /data/user/0/com.slowshel/cache/cedzzialvsni N/A N/A

Makes use of the framework's Accessibility service

collection evasion credential_access
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId N/A N/A

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

banker discovery

Queries the phone number (MSISDN for GSM devices)

discovery

Acquires the wake lock

Description Indicator Process Target
Framework service call android.os.IPowerManager.acquireWakeLock N/A N/A

Makes use of the framework's foreground persistence service

evasion persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A

Performs UI accessibility actions on behalf of the user

evasion
Description Indicator Process Target
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A

Queries the mobile country code (MCC)

discovery
Description Indicator Process Target
Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone N/A N/A

Reads information about phone network operator.

discovery

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

persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.registerReceiver N/A N/A

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal N/A N/A

Processes

com.slowshel

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 biribasganidurdursunn.com udp
RU 193.143.1.9:443 biribasganidurdursunn.com tcp
US 1.1.1.1:53 basgaancosturuyor.com udp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.200.8:443 ssl.google-analytics.com tcp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.180.14:443 android.apis.google.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
GB 216.58.201.100:443 tcp
GB 216.58.201.100:443 tcp
GB 172.217.16.238:443 tcp
GB 216.58.201.98:443 tcp
GB 142.250.180.3:443 tcp
GB 142.250.180.3:443 tcp
US 1.1.1.1:53 g.tenor.com udp
GB 216.58.212.234:443 g.tenor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp

Files

/data/data/com.slowshel/cache/cedzzialvsni

MD5 d2e9bee71e1b1d930a57571a43ea9d52
SHA1 816ba2a8e769871b069b4b95e915f7c2590961e1
SHA256 aac193050bee17d91817a743dc17fa95b4e32f6dd8dc09a36669d4beb56bc113
SHA512 943ca0d549e162bb582487471ede2c8cacb549719f94e645a1dc67f9bd7e3abf2414a64c4195073f2c0f7e20557acbeb7d39f5083b50e2c9361ca4a10d2e10dc

/data/data/com.slowshel/kl.txt

MD5 cfe5de81e4968fedba8d69334102ac7f
SHA1 e72434be778214cda0e6d6e1e79e03a011efbc8a
SHA256 45209ca76860f7330e4e3a13adf11d26a00c789bc8a9e6f41448e333c14e4201
SHA512 c34946efbbb67226fe895ed3c1559cb90cfaf6470ca7d4f19538c1223c7e7c082782c27c2b429a3d7532172a42bacb65f1e6c27875a3ee3340f51cb1b7e88c39

/data/data/com.slowshel/kl.txt

MD5 5304e59ee501ae9c8931089b786ed057
SHA1 a4f4f70ce9d6e460ebd7cbf3e53907a0c3404642
SHA256 9c6496fe06b96ce994867fddd093f1674ce7ee134c7cb628ae5499bbd8d3dc2b
SHA512 3aed277e6533ca8acdc48ea1aece123dc5ff8415115dad168ade7acc98ac64d745319842fc998eb0a95abffad6224fb12c4fd0dc20df97d9cd7ed20f5f474344

/data/data/com.slowshel/kl.txt

MD5 a774fdbfd4f6c33a81abc99a1cbde94c
SHA1 506d7d80cfde02557a270a0bf70f55ccac03ffd7
SHA256 35bac2b34a3ed07fab77a94ffb3a50c64b6213e23b2a958c26c7021abb615616
SHA512 1d38a0d73b20fbf8a9b7aa4c07f662557a21ec7fba7a1750beee4c554d4f67047e7481b34c5171bc1281d8d4a0a3ddef67f170cab7caee19ffd89f221e575606

/data/data/com.slowshel/kl.txt

MD5 8ec4cfc40eb4b7368995e20372a15dbd
SHA1 faa0a27e05489d9db9f2a2f314ca1161812ec1e9
SHA256 f6e1545764c5cd2929bdc99301c1bbc27198208769029e22c6d2345989800ad0
SHA512 2f6d3ea08898e68a6551acc5f8b7e95497849f9373b47cc02d9e00179780fc2d45caf1b6d6216487adc8e7739e13834812b51a39b2bad973436545fdd35efd86

/data/data/com.slowshel/kl.txt

MD5 53c485484e038d35c025a140d4cb6b56
SHA1 b5898efc3abed9fe345dab2dd932ea3cc3837cb4
SHA256 e6a4b6c498e1f7f2a93d8ad485732038d37c94e0d8690ebebefa1070bc81ed2e
SHA512 14e100c1ebe7f0b6a7ca2e420c08f1f994cf4873c175d03f58cd677ef9cc119231cf149ffc178e40bb1b73886bd7e733e591cd6cb7fe53f62ba388c5c37d1e02

/data/data/com.slowshel/cache/oat/cedzzialvsni.cur.prof

MD5 96deaf02fd0c7a10794046fb1c3d1959
SHA1 4130db4521be816ebbf301bbbff47e649eceeba4
SHA256 7e5366323a6c21bfee7693ea175d7fda57580d89cad52d80558f02445fd22f49
SHA512 003f56e783d4f06a912c4922c3dd5f99f7d6878b4a007714d5371856dd7d6748625efcedc2eecbcd631c277b38059d4e7564a853c4586409e55547378eda4d12

/data/data/com.slowshel/.qcom.slowshel

MD5 046a414913add6f5bb60072c7db819b6
SHA1 451ee4f6809260aec622d772fd329c7d0297a842
SHA256 b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a
SHA512 4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c