Malware Analysis Report

2025-01-19 05:43

Sample ID 210922-jr1cgabhg2
Target 1b0bfad146eeb4295c3a1ee5b316adea4b1195bf35006b038d8d6d21d8310e5b.apk
SHA256 1b0bfad146eeb4295c3a1ee5b316adea4b1195bf35006b038d8d6d21d8310e5b
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

1b0bfad146eeb4295c3a1ee5b316adea4b1195bf35006b038d8d6d21d8310e5b

Threat Level: Known bad

The file 1b0bfad146eeb4295c3a1ee5b316adea4b1195bf35006b038d8d6d21d8310e5b.apk was found to be: Known bad.

Malicious Activity Summary

flubot banker infostealer obfuscation ransomware trojan

FluBot Payload

FluBot

Requests dangerous framework permissions

Loads dropped Dex/Jar

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

Uses reflection

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-09-22 07:54

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 read the user's contacts data. android.permission.READ_CONTACTS 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 receive SMS messages. android.permission.RECEIVE_SMS N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-09-22 07:54

Reported

2021-09-22 07:59

Platform

android-x64-arm64

Max time kernel

209977s

Max time network

199s

Command Line

com.sina.weibo

Signatures

FluBot

banker trojan infostealer flubot

FluBot Payload

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

Loads dropped Dex/Jar

Description Indicator Process Target
N/A /data/user/0/com.sina.weibo/app_apkprotector_dex/Y1VjHmUP.sq N/A N/A
N/A /data/user/0/com.sina.weibo/app_apkprotector_dex/Y1VjHmUP.sq 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.sina.weibo

Network

Country Destination Domain Proto
US 1.1.1.1:853 tcp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:853 tcp
US 142.250.180.10:80 play.googleapis.com tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
US 1.1.1.1:853 tcp
US 1.1.1.1:853 tcp
US 1.1.1.1:853 tcp
GB 142.250.200.40:443 tcp
US 142.251.36.36:443 tcp
US 142.251.36.10:443 tcp
US 172.217.169.2:443 tcp
NL 142.250.179.170:443 tcp
US 142.251.36.10:443 tcp

Files

/data/user/0/com.sina.weibo/app_apkprotector_dex/Y1VjHmUP.sq

MD5 f5561a08e87f709dd3d811efd2bbd93a
SHA1 893de96ccede79d024da230d3159145723860690
SHA256 d4b54261bbbfdb8bb5ac3fc1a44b88b95781ee603a8b4f89c1a09d0773083e43
SHA512 fb68a489cc5826a255a623849419f477c6988295b5cf4a220e4bbae463bcb19cc19cad84bf3edc91f699c8fcaa98fbefff2918c037dea36a64c27b52b045b48c

/data/user/0/com.sina.weibo/app_apkprotector_dex/Y1VjHmUP.sq

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.sina.weibo/app_apkprotector_dex/Y1VjHmUP.sq

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.sina.weibo/shared_prefs/Voicemail.xml

MD5 c6c2b686aea6ffd2f6aedf4cd5d72afc
SHA1 cbcd26a8350156494e2ba8219baef5b206448f02
SHA256 6addbd944946db83a3a79a03a7b6a7ecff902aee58754fd98fb619088ef8b870
SHA512 e646562f6944f87f4637056f70bd3fd4159ad8fea998fdf7695f694260ac9a4982af103da7aae9c0e4876c531a42e49fe0b7a12eba411fa89505bf1de5f22888