Malware Analysis Report

2025-01-19 05:43

Sample ID 210920-pk4dfaeba2
Target 3aa8a961da73f4f9ee924e67b8f6ef8535f4ed6c2cf935ac7a46ced5c31fe20d.apk
SHA256 3aa8a961da73f4f9ee924e67b8f6ef8535f4ed6c2cf935ac7a46ced5c31fe20d
Tags
flubot banker infostealer obfuscation 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 Overview

score
10/10

SHA256

3aa8a961da73f4f9ee924e67b8f6ef8535f4ed6c2cf935ac7a46ced5c31fe20d

Threat Level: Known bad

The file 3aa8a961da73f4f9ee924e67b8f6ef8535f4ed6c2cf935ac7a46ced5c31fe20d.apk was found to be: Known bad.

Malicious Activity Summary

flubot banker infostealer obfuscation trojan

FluBot

FluBot Payload

Requests dangerous framework permissions

Loads dropped Dex/Jar

Requests enabling of the accessibility settings.

Uses reflection

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-09-20 12:24

Signatures

Requests dangerous framework permissions

Description Indicator Process Target
Allows an application to send SMS messages. android.permission.SEND_SMS 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
Allows an application to receive SMS messages. android.permission.RECEIVE_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 SMS messages. android.permission.READ_SMS N/A N/A
Allows an application to read the user's contacts data. android.permission.READ_CONTACTS N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-09-20 12:24

Reported

2021-09-20 12:27

Platform

android-x86-arm

Max time kernel

53287s

Command Line

com.tencent.qqmusic

Signatures

FluBot

banker trojan infostealer flubot

FluBot Payload

Description Indicator Process Target
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.tencent.qqmusic/code_cache/secondary-dexes/base.apk.classes1.zip N/A N/A
N/A /data/user/0/com.tencent.qqmusic/code_cache/secondary-dexes/base.apk.classes1.zip N/A N/A

Requests enabling of the accessibility settings.

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

Uses reflection

obfuscation
Description Indicator Process Target
Invokes method android.view.ViewGroup.makeOptionalFitsSystemWindows N/A N/A N/A
Acesses field com.android.okhttp.internal.tls.OkHostnameVerifier.INSTANCE N/A N/A N/A

Processes

com.tencent.qqmusic

com.tencent.qqmusic

/system/bin/dex2oat

Network

N/A

Files

/data/user/0/com.tencent.qqmusic/code_cache/secondary-dexes/MultiDex.lock

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.tencent.qqmusic/code_cache/secondary-dexes/tmp-base.apk.classes9213781018643620077.zip

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.tencent.qqmusic/code_cache/secondary-dexes/base.apk.classes1.zip.x86.flock

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.tencent.qqmusic/code_cache/secondary-dexes/oat/x86/base.apk.classes1.vdex

MD5 8bf02ec8f1013c5f8fb022ce5e10f2fc
SHA1 3bbfe777ddd8d21a68de710f0fb1e759c4694827
SHA256 8cdc7f71f5162ac62f9e9b3a8ae215ff286bf669c200b0d7d4c5541e429bf7a3
SHA512 8b9fa4a59e85919a2e6703d4e29afd7653494ce81266abaf797d066bfc78d121c716357ac9d87f14920891efcedd7ad18d810d7dce21b7f38306766aa743bfec

/data/user/0/com.tencent.qqmusic/code_cache/secondary-dexes/oat/x86/base.apk.classes1.odex

MD5 d0bdc2dd83c5810512910a2387968ce6
SHA1 8d343c6c2501712329f9d3f68e2d78a352ab32ed
SHA256 549283c63acc6db00bcd2e128e1c9217033b2ed1c063af3608093b5598d9ec11
SHA512 ab3db6eaf6043766aa386dec939ed0a4c38bb2a1da7466845abb33a35cfba2a0eb35eb82b8a155d5f7360f31b85399955df00563cf385fa53afebcf9224af3fa

/data/user/0/com.tencent.qqmusic/shared_prefs/multidex.version.xml

MD5 28c2ba258dae28c527967c827e2ba249
SHA1 7eda9b7f08af6561c3e0ba8f1b57fd7b49bdcaec
SHA256 9684273ba8bc17c1f5f6e5d1927d38347bcca9400fd69886def8903da01e033d
SHA512 3b5452aba8cce51630e6870e0b5c1282737d28fe9cdfc6a549749586460c60bff4a293d1312c7e32548de90f81f1b89321ff94f1637341bfed0b13422424975b

/data/user/0/com.tencent.qqmusic/code_cache/secondary-dexes/base.apk.classes1.zip

MD5 35c33d14f0b27123659f188c57a6b4c3
SHA1 1f2764d98fc61baef3d1a58b9142b39ca1637599
SHA256 d099a649f3635569452c839ed7853446d70f3798f1ecf304401fd985540314c9
SHA512 4434b425968368a52561a2a4f528964c4a70953d692d0eb09c6ab073282236beddf56a636108293e4e60890d6d9d39086708c6944f8f06205fda19fdeda5f733

/data/user/0/com.tencent.qqmusic/code_cache/secondary-dexes/base.apk.classes1.zip

MD5 4f590e47771f9c49b3383d9e802faf43
SHA1 ed9fb1e9b8659782f8e1669e0e5853980993ab00
SHA256 db978536b556eb5dc8042f799e68f27cd4cc219e4c98fdca3260736f7bbf826e
SHA512 d17efb7f9c7243e3b7c765f2d94092138d91eb7e88501d3fd5db182170492cd06ad3fc9eaea1ed8fe9b81d3f61af13f805861b9b0e531e502954bcc0332ea81a

/data/user/0/com.tencent.qqmusic/shared_prefs/Voicemail.xml

MD5 f9263bf3f54a92467515f649842977f9
SHA1 4b2bce1fdb936c2c5ad98e6ae6ea2fe282869866
SHA256 5396959a21b9f8533adac993ff67a0bc88b51463728fc1ccab3d585af5227597
SHA512 0c411ef3e3a3cc45ec1937f4744a646a823411795e6311445a71319577ba076008d2e227bde7a33dc61ad857287c5a422d7f93663c1d7fb1b5038e848d4642cb