Malware Analysis Report

2025-01-19 05:43

Sample ID 210920-pk5w9sggbn
Target 41d7af5f935d567d36ef594f30301057649ddec79ca2ccc82a21159104983c4c.apk
SHA256 41d7af5f935d567d36ef594f30301057649ddec79ca2ccc82a21159104983c4c
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

41d7af5f935d567d36ef594f30301057649ddec79ca2ccc82a21159104983c4c

Threat Level: Known bad

The file 41d7af5f935d567d36ef594f30301057649ddec79ca2ccc82a21159104983c4c.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 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
Allows an application to read the user's contacts data. android.permission.READ_CONTACTS 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

Analysis: behavioral1

Detonation Overview

Submitted

2021-09-20 12:24

Reported

2021-09-20 12:30

Platform

android-x86-arm

Max time kernel

53431s

Command Line

com.xunmeng.pinduoduo

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.xunmeng.pinduoduo/app_apkprotector_dex/XoyN2M3V.king N/A N/A
N/A /data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/XoyN2M3V.king N/A N/A
N/A /data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/XoyN2M3V.king 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.xunmeng.pinduoduo

com.xunmeng.pinduoduo

/system/bin/dex2oat

Network

N/A

Files

/data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/XoyN2M3V.king

MD5 741f65681a35abab9d24f9eebc667702
SHA1 ae433a04a4716a2669d260f9dae0c0af77ba158e
SHA256 2db2c8e8e80440ada3afb2571315d50e7db0898aad5049c5c83939de10410722
SHA512 87bcf1d582c14ac9d783d586f207bbdcd673ed97c2697f00992147f49e18581812ed681a0d8da272b421cc120a05dedf6cb7f3bcefd04818b524d2f3cc57d295

/data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/XoyN2M3V.king.x86.flock

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/XoyN2M3V.king

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/oat/x86/XoyN2M3V.vdex

MD5 044d0db0e11fd2aaa3d1b0cbf4e8a379
SHA1 b2a8c3de704abee3b2c142f501247e0f52078e60
SHA256 c9011ab467be790e80159ab53abaf6eb7144b4586eda86e77d26540f6ed6b53e
SHA512 81c757ef2c04d7d17ce932179c77f8c7a58adb39be437d5e6514622e03fc342c5a4e94d08af7bf619bdd99bae1caf58790a05d87bbd7e42b3058abc59664c6f3

/data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/oat/x86/XoyN2M3V.odex

MD5 2bdd796fa86d552dd2508406df217337
SHA1 990bd74537b58aeebafd360a502db4c92b4c74e4
SHA256 4015c84640981c8b001d100e628c9308f48d2050313b75046d82fd7c371b41fb
SHA512 597aeda930250ef8188132f2d667dd943aa969e6cacf650216e8837ba9c2b576802ae9e3646e5b442c956c37e7038d5a1a79fd3b4f22930314eb7af028d9d0fc

/data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/XoyN2M3V.king

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.xunmeng.pinduoduo/app_apkprotector_dex/XoyN2M3V.king

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.xunmeng.pinduoduo/shared_prefs/Voicemail.xml

MD5 f38e897dca95b31e13645ac652b0f86e
SHA1 7760bcba95821bda949a516c68bd8618bca14aeb
SHA256 be1e6ac0dfa10e45c15292ec5053416e0970cdfd6ec26c4608b95e48ecf63c58
SHA512 f3a8f8c71690ec4a3ae15eb089639b015935cdfb2d69cb53383f2210e60655cffacd438ce61e29a2aec44562f6e4595bf06c5da86efe73c3afcb120e6b48c941