Malware Analysis Report

2024-09-09 16:16

Sample ID 240612-slznestcpk
Target b8b106400da68aff5857fd1fee88dff5cb11e54b7b5d772f621755a8caeccfd3.bin
SHA256 b8b106400da68aff5857fd1fee88dff5cb11e54b7b5d772f621755a8caeccfd3
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

b8b106400da68aff5857fd1fee88dff5cb11e54b7b5d772f621755a8caeccfd3

Threat Level: Known bad

The file b8b106400da68aff5857fd1fee88dff5cb11e54b7b5d772f621755a8caeccfd3.bin was found to be: Known bad.

Malicious Activity Summary

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

Octo payload

Octo

Removes its main activity from the application launcher

Makes use of the framework's Accessibility service

Loads dropped Dex/Jar

Queries the phone number (MSISDN for GSM devices)

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

Reads information about phone network operator.

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

Requests dangerous framework permissions

Queries the mobile country code (MCC)

Declares broadcast receivers with permission to handle system events

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).

Declares services with permission to bind to the system

Acquires the wake lock

Makes use of the framework's foreground persistence service

Performs UI accessibility actions on behalf of the user

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

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-12 15:13

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 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

2024-06-12 15:13

Reported

2024-06-12 15:16

Platform

android-x86-arm-20240611.1-en

Max time kernel

36s

Max time network

144s

Command Line

com.keepnorth3

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.keepnorth3/cache/tobpmklxk N/A N/A
N/A /data/user/0/com.keepnorth3/cache/tobpmklxk 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

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

Reads information about phone network operator.

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

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.keepnorth3

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 kfamhepkarambol.top udp
US 1.1.1.1:53 gecicekyramatuzatma.top udp
US 1.1.1.1:53 birgunolucakelbeet.xyz udp
US 1.1.1.1:53 gormedenglenlereslm.xyz udp
US 1.1.1.1:53 olanlarigoruceez.xyz udp
US 1.1.1.1:53 dememelalemnedeerr.top udp
US 1.1.1.1:53 hyatyumrukgibi.top udp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
GB 216.58.201.110:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.238:443 android.apis.google.com tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp

Files

/data/data/com.keepnorth3/cache/tobpmklxk

MD5 ad99d2e463576d713843c4887b9fd92a
SHA1 c76a36c0af80c1705e479be87937508e7d1a64c4
SHA256 9c332c17cb07d2ac2bc37c15a01d78f92ab3dfd1bd39be89578125b0645ea111
SHA512 61a02d0e0d1ecd69134458c5086a38162056268eeaf60fc0396086f3f139c8151503ad4d02fd264a0d8885b3b45f138d821e6ac98e46e0b6e4868014f1bbda21

/data/data/com.keepnorth3/kl.txt

MD5 efafff39ea3f8c39539189d0f3821464
SHA1 e7aed0f4a3396c8e66477908fd9466b4943f56f3
SHA256 25785736562663f0534bf2c61d77acd6306d87c3dab775544206255b03c65437
SHA512 4e1185ff8c4d28461fa0f99a0019782bef26524260d1232a13012ee66124c1963ef72aff102525189ddceed61202c2d76b1857ee48f2b2799d332362b8bc47ee

/data/data/com.keepnorth3/kl.txt

MD5 5d0a90476b84fb61cdef63640ac3c99c
SHA1 91541294e8618ec12d471b4231373fdcd099d39f
SHA256 9be25abb7f1fc87e5568563de04622d21b91f3b03dafd958d899ea4c2426e76d
SHA512 a372e244c7517034bd37706f5934d508be220c6a9af88d700fcf2a214349dfc71891739cd7767691f3c479aadc0561d0d1de31c57f48b1492adfdfa083df20cc

/data/data/com.keepnorth3/kl.txt

MD5 488789da73bfc785d58510c643ec0551
SHA1 9e1d96bec9e3b9ca313a6bdfd73eb660d4ee3a1a
SHA256 96d2d6ba5b6e53b39cd113fb5d56f73d5bcb18d4ae9b869f456c08bba8ad7d54
SHA512 041640270e7aa48afa9d6253bdb2c1aa66ab4f59ecfe774d108c59c5de61ad9a06eeeb5ba4e57dbd9afbef5c9e2e4d1dead229e9eb849e824602f309cf51c719

/data/data/com.keepnorth3/kl.txt

MD5 e66ac1ffaf0b220b1a8de6975b07fb98
SHA1 da0f65063310cb1afdfe21587c4f38440aca1a02
SHA256 26025e3468f642e7c4f84ae42d44085b4923f1a82e30c8ea9557b525de184e62
SHA512 3980411c222599a8804ca84b7d0a2fbb1a7aceaab4470eea9884f200ad39c1cc331c30aa9f08b77086cf6806d2fc303ef4c360cf0dd9ba7e0f76eed939e2c8be

/data/data/com.keepnorth3/kl.txt

MD5 5222cea507c139eed1cd5581878da99e
SHA1 05ee72a6b8f3974135326d89dd60149172c637b3
SHA256 7ca40e8058bd9a653e0b6321bbf1b5098f3a7ae3e543bc56de5727713409cb80
SHA512 6ecefcffafbd17f21d3d359655524b0d7e1a2df02338aac3c60648335990297e94332614148dd86cdcd6f8334a956f192d4c882963d4ceffa91e7d9dce77613d

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 15:13

Reported

2024-06-12 15:16

Platform

android-x64-arm64-20240611.1-en

Max time kernel

170s

Max time network

176s

Command Line

com.keepnorth3

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.keepnorth3/cache/tobpmklxk N/A N/A
N/A /data/user/0/com.keepnorth3/cache/tobpmklxk 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
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText 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

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

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.keepnorth3

Network

Country Destination Domain Proto
GB 172.217.16.238:443 tcp
N/A 224.0.0.251:5353 udp
GB 172.217.16.238:443 tcp
US 1.1.1.1:53 gecicekyramatuzatma.top udp
US 1.1.1.1:53 ssl.google-analytics.com udp
US 1.1.1.1:53 birgunolucakelbeet.xyz udp
GB 216.58.201.104:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 hyatyumrukgibi.top udp
US 1.1.1.1:53 olanlarigoruceez.xyz udp
US 1.1.1.1:53 saffetsafmigerckten.top udp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
US 1.1.1.1:53 taktimbirtipayivedekovayi.top udp
US 1.1.1.1:53 kfamhepkarambol.top udp
US 1.1.1.1:53 gormedenglenlereslm.xyz udp
US 1.1.1.1:53 bitmeztukenmezbuenerjj.xyz udp
US 1.1.1.1:53 savuryadarsavuun.xyz udp
US 1.1.1.1:53 fesatlarafesatkk.xyz udp
US 1.1.1.1:53 sankioguncokuzakk.top udp
US 1.1.1.1:53 taktmkafayikapattmkafayi.xyz udp
US 1.1.1.1:53 kirmizimavigelldii.xyz udp
US 1.1.1.1:53 dnliyomsadeceuzaktan.xyz udp
US 1.1.1.1:53 ckinsanaffettmm.top udp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
GB 172.217.169.68:443 tcp
GB 172.217.169.68:443 tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp
GB 142.250.187.206:443 tcp
GB 142.250.180.2:443 tcp
BG 194.59.30.2:443 hyatyumrukgibi.top tcp

Files

/data/data/com.keepnorth3/cache/tobpmklxk

MD5 ad99d2e463576d713843c4887b9fd92a
SHA1 c76a36c0af80c1705e479be87937508e7d1a64c4
SHA256 9c332c17cb07d2ac2bc37c15a01d78f92ab3dfd1bd39be89578125b0645ea111
SHA512 61a02d0e0d1ecd69134458c5086a38162056268eeaf60fc0396086f3f139c8151503ad4d02fd264a0d8885b3b45f138d821e6ac98e46e0b6e4868014f1bbda21

/data/data/com.keepnorth3/kl.txt

MD5 70f556aac0859c2ecc52b71b8f94c748
SHA1 96404a2d68bf97f252ead794f64d27a16e1ff2a6
SHA256 d64733ec0c21eda878ffc8d764be122d2b1df31265d8f80466593cd0e7d3e839
SHA512 ed2b7f6226daa0944b273c049c44580876d6bcde3a95a73283d5894a9ac227897dad887865cbc3a0a50275b25ef31cebb3cf4139bbb947ac35da96368e6e3fad

/data/data/com.keepnorth3/kl.txt

MD5 8292a71c6273ebabcd963de98ca6db32
SHA1 8fa1832cf60783e03c93f5a9cd1eb37c6e2d8074
SHA256 33268698e7a92d89819f261ed2e35357886ffa5106bb0e80ec487ba52ef9b76d
SHA512 276836a8e570470d686ef870fa4e60646ba6f7d66949f5f6db0d9e5bfbc81617eaec89022489e680681342634e85f62a39ad4d94ae05aeded94f1c7a1a127575

/data/data/com.keepnorth3/kl.txt

MD5 5bbd5260cbce4ffb1eb4aaced43db58f
SHA1 a00bffd43931a7839997934f2d6c8246d441b745
SHA256 754a6eabdf073c2a632f2faa85b7e53670e950431ecbecfe91911ebb61b351bd
SHA512 0e3d4a3ae7e156c6e18d4f9c1db7c3489a02cc562e07157ca7bf57e581117875aaff74e250b37c39cf026f3488fa64eadc47802ab06167f2dca3233bcfe76048

/data/data/com.keepnorth3/kl.txt

MD5 bfc6b89c1ed6f333dfbbe3d04c2e740f
SHA1 4acb6e79b35bc46844c4e2f45e3122d89ed1a64f
SHA256 16ba6e5c86489b35505853e588ca4de167cbf539894c5e5e6c8e3c7273fc6dd6
SHA512 e093fb2778a8e4c24e4261ed91bd65cd5140d2b1eef0c2d8a79bf288e6e449ece318463a70253e895f84f7417478f96a67483ea0a3f9389564374d535a7ccb70

/data/data/com.keepnorth3/kl.txt

MD5 715ff9145781b29de6c81d1b9519ba82
SHA1 9a621640cdc21e3fd92435bfe5490f5ed2c53452
SHA256 d94f4de2ae9743f96fb980d22d3dda2097895914fb4e462421418fd7afb1d2ef
SHA512 15934dcc433d24aeb9b36fe4f7e771a7b4a9313f5703a0bd4b0e834b2f67c5f4f03ecb20e2b36a655f0fa3a7fd22ebfc790696e7770e6e240744f86e522e0b1b

/data/data/com.keepnorth3/cache/oat/tobpmklxk.cur.prof

MD5 b2838c1bb49443e1979dee34639182c8
SHA1 824d5e949844f64a528b18d4f672e50b2a7bc0d0
SHA256 406822cae5bb323a328d0e16aee6e5d35d8f135c8bbae56d6df983858345b7cf
SHA512 8b4cc3cbc0448c29fbcc1b704df43ba99c3a88c3bd3b26335d69a7da12fbdbdd665d156f076d52270e330a399c1152e4fd58006365d41d3e8d32aea0b708e56e

/data/data/com.keepnorth3/.qcom.keepnorth3

MD5 046a414913add6f5bb60072c7db819b6
SHA1 451ee4f6809260aec622d772fd329c7d0297a842
SHA256 b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a
SHA512 4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c