Malware Analysis Report

2025-01-19 05:43

Sample ID 210902-q1r6sadbak
Target 562b50e21fbaa4873f4f854a6fe68c4eb3238cdb0331ae767c4585be4c9713fd.apk
SHA256 562b50e21fbaa4873f4f854a6fe68c4eb3238cdb0331ae767c4585be4c9713fd
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

562b50e21fbaa4873f4f854a6fe68c4eb3238cdb0331ae767c4585be4c9713fd

Threat Level: Known bad

The file 562b50e21fbaa4873f4f854a6fe68c4eb3238cdb0331ae767c4585be4c9713fd.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

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

Uses reflection

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-09-02 13:44

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

2021-09-02 13:44

Reported

2021-09-02 13:46

Platform

android-x64

Max time kernel

2797744s

Max time network

50s

Command Line

com.bilibili.app.in

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.bilibili.app.in/app_apkprotector_dex/uDYoKIJj.lvm N/A N/A
N/A /data/user/0/com.bilibili.app.in/app_apkprotector_dex/uDYoKIJj.lvm 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.bilibili.app.in

Network

Country Destination Domain Proto
N/A 1.1.1.1:853 tcp
N/A 216.239.35.0:123 time.android.com udp

Files

/data/user/0/com.bilibili.app.in/app_apkprotector_dex/uDYoKIJj.lvm

MD5 ff48f271ab3d31e88bd0e2d8b073f511
SHA1 790aec4f766a98a71642f2204e82aef6977a9f69
SHA256 4d203bde1bad95976e47db92d2a503000706f1761c00e58e7f5f63875c9c369e
SHA512 89d27aa1a4fb055811d5518922f44f8fad50f718e70905bb452aab514b65aa5abc7f4765cf5e7f81811150f6269216f628aa7ad677b408f5faf1b5ea2ea467e1

/data/user/0/com.bilibili.app.in/app_apkprotector_dex/uDYoKIJj.lvm

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.bilibili.app.in/app_apkprotector_dex/uDYoKIJj.lvm

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.bilibili.app.in/shared_prefs/Voicemail.xml

MD5 cd3bd4f5de5f329b29c48905897889f3
SHA1 a75139981b5ebc86105c5716b5e352ffbd86f5cb
SHA256 ffb3d4378f9f6a44483742a11cedbf1820bec3c11e83d5947ee20970c187f775
SHA512 69d6ffa4417db289e70bc0c1a63749e626764b26212fe21c07b92fd8de76e195b08feca58e905599eb1e92582a0f44b594ceee1cc043d770869b386ad4b51cb5