Malware Analysis Report

2025-01-19 05:37

Sample ID 230317-jak68agh21
Target chrome_update1123.apk
SHA256 4ab798421cf7f1a850407f230345162ead450f13ef336ff2aae053a39c15c7cb
Tags
octo banker infostealer ransomware rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

4ab798421cf7f1a850407f230345162ead450f13ef336ff2aae053a39c15c7cb

Threat Level: Known bad

The file chrome_update1123.apk was found to be: Known bad.

Malicious Activity Summary

octo banker infostealer ransomware rat trojan

Octo payload

Octo

Makes use of the framework's Accessibility service.

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

Loads dropped Dex/Jar

Requests dangerous framework permissions

Acquires the wake lock.

Reads information about phone network operator.

Uses Crypto APIs (Might try to encrypt user data).

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-03-17 07:27

Signatures

Requests dangerous framework permissions

Description Indicator Process Target
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
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 from external storage. android.permission.READ_EXTERNAL_STORAGE N/A N/A
Allows an application to write to external storage. android.permission.WRITE_EXTERNAL_STORAGE N/A N/A
Allows an application to read from external storage. android.permission.READ_EXTERNAL_STORAGE N/A N/A
Allows an application to read SMS messages. android.permission.READ_SMS N/A N/A
Allows an application to receive SMS messages. android.permission.RECEIVE_SMS N/A N/A
Allows an application to send SMS messages. android.permission.SEND_SMS N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-17 07:27

Reported

2023-03-17 07:30

Platform

android-x86-arm-20220823-en

Max time kernel

3997404s

Max time network

154s

Command Line

com.pagemeasurecfti

Signatures

Octo

banker trojan infostealer rat octo

Octo payload

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

Makes use of the framework's Accessibility service.

Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId 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
Description Indicator Process Target
Framework service call android.content.pm.IPackageManager.getInstalledApplications N/A N/A

Acquires the wake lock.

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

Loads dropped Dex/Jar

Description Indicator Process Target
N/A /data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json N/A N/A
N/A /data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json N/A N/A
N/A /data/user/0/com.pagemeasurecfti/cache/krzzawk N/A N/A
N/A /data/user/0/com.pagemeasurecfti/cache/krzzawk N/A N/A

Reads information about phone network operator.

Uses Crypto APIs (Might try to encrypt user data).

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

Processes

com.pagemeasurecfti

/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.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/oat/x86/AWjjWN.odex --compiler-filter=quicken --class-loader-context=&

Network

Country Destination Domain Proto
NL 216.58.214.14:443 udp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 android.apis.google.com udp
NL 172.217.168.206:443 android.apis.google.com tcp
NL 172.217.168.206:443 android.apis.google.com tcp
US 1.1.1.1:53 infinitedata-pa.googleapis.com udp
US 1.1.1.1:53 www.ip-api.com udp
US 208.95.112.1:80 www.ip-api.com tcp
US 1.1.1.1:53 countnatbt.site udp
US 1.1.1.1:53 btcountates.fun udp
US 1.1.1.1:53 3countbt.pw udp
NL 62.233.51.32:443 3countbt.pw tcp
NL 62.233.51.32:443 3countbt.pw tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
NL 142.251.36.10:443 semanticlocation-pa.googleapis.com tcp
NL 62.233.51.32:443 3countbt.pw tcp
US 1.1.1.1:853 tcp
US 1.1.1.1:853 tcp
NL 62.233.51.32:443 3countbt.pw tcp
US 1.1.1.1:853 tcp
NL 62.233.51.32:443 3countbt.pw tcp
NL 62.233.51.32:443 3countbt.pw tcp

Files

/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json

MD5 a06f2aa08a0a902cbb7d0d8297698fce
SHA1 903171ac69fa22ce99251ad32292ad4e14c967bc
SHA256 ba3deeac9e48ca1f0c0e02ed92d96b193457f2e4df16edf6d7a82b171821467b
SHA512 7260b46e2e463effb0067ac511cd3506cea54670e86e6593aeba4f9bb2e5841c0190cb946130c4ae4cc9aa6bb0cd9370b0d5178bffd808dcd28e45aea79158d2

/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json.x86.flock

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/oat/x86/AWjjWN.vdex

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/oat/x86/AWjjWN.odex

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json

MD5 b86e3530fb8c599189d3b470b539f6ef
SHA1 59913721c6935980aa0dc00c065c74f6bc11fa51
SHA256 b8e98682c235f0730502a1e38b890fa4b4ff86cffe09675fac76a8402140f762
SHA512 d40e1820e70b7d28a56f0a8d96f15817784ebed5ff1bf197b89a3dd2414c3b57b68d7e437bc6c08cc3ada606d27be55d0ab83ba0901dec2a59cda8951e362b70

/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json

MD5 2951bd3189ac48d2e0c548570855a2f4
SHA1 217cc8421d307c651ca357beeee2d4de0c8fa7f8
SHA256 e1f5af0e3ebe5ba01e923077e62e9a4c800c029d4274ece31f450b4f8bd9ce45
SHA512 328427a217325337f8f7d93ab685c125d84d77b210104009426e7b53681abff16b2fdec6d61ab9a5908855ae53787621e620e4ca131570fa47c34add07d3ec72

/data/user/0/com.pagemeasurecfti/cache/krzzawk

MD5 78c3c8bd1d0fe561a2db2e21921cab70
SHA1 325e0b51a54614447fd8cfe3e65a978b4766fe53
SHA256 53cb35f6b80d18c49c9efc635eec9d05964769042b5408d332684c86397a1a40
SHA512 043d031139c397e07596cd167103d17b4d888112a8af78e2f558fe88c21a61f1e0ef5a34d54efbcdeb156b5e80554d81722369d7fe44e68e4e02e8c717b2b6c7

/data/user/0/com.pagemeasurecfti/cache/krzzawk.x86.flock

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.pagemeasurecfti/cache/krzzawk

MD5 78c3c8bd1d0fe561a2db2e21921cab70
SHA1 325e0b51a54614447fd8cfe3e65a978b4766fe53
SHA256 53cb35f6b80d18c49c9efc635eec9d05964769042b5408d332684c86397a1a40
SHA512 043d031139c397e07596cd167103d17b4d888112a8af78e2f558fe88c21a61f1e0ef5a34d54efbcdeb156b5e80554d81722369d7fe44e68e4e02e8c717b2b6c7

/data/user/0/com.pagemeasurecfti/cache/krzzawk

MD5 78c3c8bd1d0fe561a2db2e21921cab70
SHA1 325e0b51a54614447fd8cfe3e65a978b4766fe53
SHA256 53cb35f6b80d18c49c9efc635eec9d05964769042b5408d332684c86397a1a40
SHA512 043d031139c397e07596cd167103d17b4d888112a8af78e2f558fe88c21a61f1e0ef5a34d54efbcdeb156b5e80554d81722369d7fe44e68e4e02e8c717b2b6c7

/data/user/0/com.pagemeasurecfti/cache/oat/krzzawk.cur.prof

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.pagemeasurecfti/shared_prefs/main.xml

MD5 0da317d7af3fdbf66dc922f40fcc2cf8
SHA1 fd2170b19a977171e1909b78c637120dbf15d977
SHA256 548404de7d9bab113daca5e691f43a37d81d5af26486f834f9c614edde85baa7
SHA512 983bf372a3e94e35fae8843efc0469fc9baf14015f8df18b005314287bd3149ee8643d18dfdc52e8eda27229c307fccdecf508748afa64c3b473050dad104a3c

/data/user/0/com.pagemeasurecfti/shared_prefs/main.xml

MD5 2983d7a48d33968427bbd154afafc3cf
SHA1 86292a8e41604234f2b8764b2dafb75537603c10
SHA256 9b1b0d120131e304521266b3ffd46996e928fc3bc79dd90311622820f109f161
SHA512 1668fa15d5ebe4d6827e5f253abc34bfba8b51caab0da4b12b3fe9332f1a7bb8a789472c9a30a41d484016bedd85d46d9ec7d5a6ffbf141c20840621b02f772e

/data/user/0/com.pagemeasurecfti/kl.txt

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.pagemeasurecfti/kl.txt

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.pagemeasurecfti/.qcom.pagemeasurecfti

MD5 046a414913add6f5bb60072c7db819b6
SHA1 451ee4f6809260aec622d772fd329c7d0297a842
SHA256 b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a
SHA512 4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-17 07:27

Reported

2023-03-17 07:31

Platform

android-x64-20220823-en

Max time kernel

4001005s

Max time network

139s

Command Line

com.pagemeasurecfti

Signatures

Octo

banker trojan infostealer rat octo

Octo payload

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

Loads dropped Dex/Jar

Description Indicator Process Target
N/A /data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json N/A N/A
N/A /data/user/0/com.pagemeasurecfti/cache/krzzawk N/A N/A
N/A /data/user/0/com.pagemeasurecfti/cache/krzzawk N/A N/A

Reads information about phone network operator.

Uses Crypto APIs (Might try to encrypt user data).

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

Processes

com.pagemeasurecfti

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 countnatbt.site udp
US 1.1.1.1:53 www.ip-api.com udp
US 1.1.1.1:53 ssl.google-analytics.com udp
US 1.1.1.1:53 countnatbt.site udp
US 1.1.1.1:53 www.ip-api.com udp
US 208.95.112.1:80 www.ip-api.com tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
NL 142.250.179.136:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 countnatbt.site udp
US 1.1.1.1:53 btcountates.fun udp
US 1.1.1.1:53 countnatbt.site udp
US 1.1.1.1:53 3countbt.pw udp
US 1.1.1.1:53 btcountates.fun udp
NL 62.233.51.32:443 3countbt.pw tcp
NL 62.233.51.32:443 3countbt.pw tcp
US 1.1.1.1:53 android.apis.google.com udp
NL 62.233.51.32:443 3countbt.pw tcp
NL 62.233.51.32:443 3countbt.pw tcp

Files

/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json

MD5 a06f2aa08a0a902cbb7d0d8297698fce
SHA1 903171ac69fa22ce99251ad32292ad4e14c967bc
SHA256 ba3deeac9e48ca1f0c0e02ed92d96b193457f2e4df16edf6d7a82b171821467b
SHA512 7260b46e2e463effb0067ac511cd3506cea54670e86e6593aeba4f9bb2e5841c0190cb946130c4ae4cc9aa6bb0cd9370b0d5178bffd808dcd28e45aea79158d2

/data/user/0/com.pagemeasurecfti/app_DynamicOptDex/AWjjWN.json

MD5 b86e3530fb8c599189d3b470b539f6ef
SHA1 59913721c6935980aa0dc00c065c74f6bc11fa51
SHA256 b8e98682c235f0730502a1e38b890fa4b4ff86cffe09675fac76a8402140f762
SHA512 d40e1820e70b7d28a56f0a8d96f15817784ebed5ff1bf197b89a3dd2414c3b57b68d7e437bc6c08cc3ada606d27be55d0ab83ba0901dec2a59cda8951e362b70

/data/user/0/com.pagemeasurecfti/cache/krzzawk

MD5 78c3c8bd1d0fe561a2db2e21921cab70
SHA1 325e0b51a54614447fd8cfe3e65a978b4766fe53
SHA256 53cb35f6b80d18c49c9efc635eec9d05964769042b5408d332684c86397a1a40
SHA512 043d031139c397e07596cd167103d17b4d888112a8af78e2f558fe88c21a61f1e0ef5a34d54efbcdeb156b5e80554d81722369d7fe44e68e4e02e8c717b2b6c7

/data/user/0/com.pagemeasurecfti/cache/krzzawk

MD5 78c3c8bd1d0fe561a2db2e21921cab70
SHA1 325e0b51a54614447fd8cfe3e65a978b4766fe53
SHA256 53cb35f6b80d18c49c9efc635eec9d05964769042b5408d332684c86397a1a40
SHA512 043d031139c397e07596cd167103d17b4d888112a8af78e2f558fe88c21a61f1e0ef5a34d54efbcdeb156b5e80554d81722369d7fe44e68e4e02e8c717b2b6c7

/data/user/0/com.pagemeasurecfti/cache/krzzawk

MD5 78c3c8bd1d0fe561a2db2e21921cab70
SHA1 325e0b51a54614447fd8cfe3e65a978b4766fe53
SHA256 53cb35f6b80d18c49c9efc635eec9d05964769042b5408d332684c86397a1a40
SHA512 043d031139c397e07596cd167103d17b4d888112a8af78e2f558fe88c21a61f1e0ef5a34d54efbcdeb156b5e80554d81722369d7fe44e68e4e02e8c717b2b6c7

/data/user/0/com.pagemeasurecfti/cache/oat/krzzawk.cur.prof

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.pagemeasurecfti/shared_prefs/main.xml

MD5 0da317d7af3fdbf66dc922f40fcc2cf8
SHA1 fd2170b19a977171e1909b78c637120dbf15d977
SHA256 548404de7d9bab113daca5e691f43a37d81d5af26486f834f9c614edde85baa7
SHA512 983bf372a3e94e35fae8843efc0469fc9baf14015f8df18b005314287bd3149ee8643d18dfdc52e8eda27229c307fccdecf508748afa64c3b473050dad104a3c

/data/user/0/com.pagemeasurecfti/shared_prefs/main.xml

MD5 ae80e3dcf257b0f968120994100f4ead
SHA1 456c5383d18af3b0b4978e53644aded175a0000f
SHA256 79f037832edbc68042dd0d6e8652014ca1fbe13095d8d01840f13d4aa542b4c4
SHA512 5f92518a7ee91af0904d1fd86ddfce5f1201b2c98c75e070f4b33fe0f89dbdbb6f498d8820318c1ea2b149ab46a9ea5e065aa3ae0b437eace2906987e988692c

/data/user/0/com.pagemeasurecfti/.qcom.pagemeasurecfti

MD5 046a414913add6f5bb60072c7db819b6
SHA1 451ee4f6809260aec622d772fd329c7d0297a842
SHA256 b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a
SHA512 4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c