Malware Analysis Report

2025-01-19 05:42

Sample ID 210817-dlyv1kv3ae
Target 2645dfecebb9ee68e9ad3cd24ceab8a4b104f3a8442a7fd74eaebef5da56e261.apk
SHA256 2645dfecebb9ee68e9ad3cd24ceab8a4b104f3a8442a7fd74eaebef5da56e261
Tags
flubot banker infostealer obfuscation ransomware 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

2645dfecebb9ee68e9ad3cd24ceab8a4b104f3a8442a7fd74eaebef5da56e261

Threat Level: Known bad

The file 2645dfecebb9ee68e9ad3cd24ceab8a4b104f3a8442a7fd74eaebef5da56e261.apk was found to be: Known bad.

Malicious Activity Summary

flubot banker infostealer obfuscation ransomware trojan

FluBot

FluBot Payload

Requests dangerous framework permissions

Loads dropped Dex/Jar

Requests enabling of the accessibility settings.

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

Uses reflection

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-08-17 08:10

Signatures

Requests dangerous framework permissions

Description Indicator Process Target
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 the user's contacts data. android.permission.READ_CONTACTS 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 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 send SMS messages. android.permission.SEND_SMS N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-08-17 08:10

Reported

2021-08-17 08:13

Platform

android-x64

Max time kernel

1395377s

Max time network

81s

Command Line

com.tencent.mobileqq

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.mobileqq/app_apkprotector_dex/6PRc77Y5.art N/A N/A
N/A /data/user/0/com.tencent.mobileqq/app_apkprotector_dex/6PRc77Y5.art 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 Crypto APIs (Might try to encrypt user data).

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

Uses reflection

obfuscation
Description Indicator Process Target
Invokes method android.view.ViewGroup.makeOptionalFitsSystemWindows N/A N/A N/A

Processes

com.tencent.mobileqq

Network

Country Destination Domain Proto
N/A 1.1.1.1:853 tcp
N/A 216.239.35.8:123 time.android.com udp

Files

/data/user/0/com.tencent.mobileqq/app_apkprotector_dex/6PRc77Y5.art

MD5 bf2790f867411762a5c823a6a35e067b
SHA1 312c710a56e42a9c0cae92170b95bf907631f387
SHA256 5296594d77515206b7523609afa6b5f4428586ff69d4b0ca36e0bf2718c1fabc
SHA512 477921b25b325ddde26ea3a6a023b1256bf4f81522a3debac84ffc43f9bbbae7f51f37489af151b7b89274fe9d9e6b10781073ed49913b211fe7d57045aa9f27

/data/user/0/com.tencent.mobileqq/app_apkprotector_dex/6PRc77Y5.art

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.tencent.mobileqq/app_apkprotector_dex/6PRc77Y5.art

MD5 f5e88b3ae50a1cffec1c9502488c745c
SHA1 bb70ea3d649f8b0cc49219e2d2d6d4a819791a10
SHA256 287803da3369b070287284d779251a06507360e76435018ab7113340805a5685
SHA512 0f341a1830c13cf3d306319cabbdb6fc317b956959555c369c384ec61334bb2053fbdaa6be0ac5970db6f6d4818aafa50e2b841a1a8614a52ad19f77bc492755

/data/user/0/com.tencent.mobileqq/shared_prefs/DHL.xml

MD5 de0724ffc2de3e6f9066c47c7f6f0c30
SHA1 0c935da1aa85e2bd126f858dde72b09d62a208f6
SHA256 9b089185463e6ee25b80ee56648ee262f40d35c241e80db2866642c4eb7a368d
SHA512 f5073d67d57b81642eb3058fc1ec85937e1cba753078add8b6219b3e56bd05a8b73eea361bdf6a0a08231e8599b67c1b43a00e44148da81f60a42bbb3c2478dc