Malware Analysis Report

2025-01-19 05:41

Sample ID 211014-nbw3bsghh4
Target b2904204e6a9ad4488d70cb59990798c233fd3ff3ecaf81d1f6a745928919f79.apk
SHA256 b2904204e6a9ad4488d70cb59990798c233fd3ff3ecaf81d1f6a745928919f79
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

b2904204e6a9ad4488d70cb59990798c233fd3ff3ecaf81d1f6a745928919f79

Threat Level: Known bad

The file b2904204e6a9ad4488d70cb59990798c233fd3ff3ecaf81d1f6a745928919f79.apk was found to be: Known bad.

Malicious Activity Summary

flubot banker infostealer obfuscation trojan

FluBot

FluBot Payload

Requests enabling of the accessibility settings.

Requests dangerous framework permissions

Loads dropped Dex/Jar

Uses reflection

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-10-14 11:13

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 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 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

Analysis: behavioral1

Detonation Overview

Submitted

2021-10-14 11:13

Reported

2021-10-14 11:20

Platform

android-x86-arm

Max time kernel

2122867s

Command Line

com.baidu.searchbox

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.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/base.apk.jdkhjbg1.xbY N/A N/A
N/A /data/user/0/com.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/base.apk.jdkhjbg1.xbY 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.baidu.searchbox

com.baidu.searchbox

/system/bin/dex2oat

Network

N/A

Files

/data/user/0/com.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/shhjhpja.kvsg

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/tmp-base.apk.jdkhjbg8754730486433667943.xbY

MD5 e88cff0f10169849a52411491d000418
SHA1 59f226a71f875f3e8ab2f7df8dde18984bd47f85
SHA256 426c7949eaff2d6e158c6a26af6d8da6fd95d3a6a23299cea3d84c6eec977001
SHA512 a44fbfa39718621595fba1fd6e8d0ad83a647ca80b16fd4465768a70ab7a3e464c3c9334e61b86d564376585dfba607da8df53f423fda72be58911af01f3f982

/data/user/0/com.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/base.apk.jdkhjbg1.xbY.x86.flock

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/oat/x86/base.apk.jdkhjbg1.vdex

MD5 49b160a886da2410d77cc14674feaefc
SHA1 de4e16e840e0eaa8159fb7cf1dc0ce0ce7db891e
SHA256 14ce6af4c54ddd4d39b5f8ce37f68072b748195b2ca467d31d722626303bc5fe
SHA512 62fd71d4cb0484e9c1a3ce500508378f3c4cd88498d54e1b29e9cf69ee32c79548c529fec7d5ef7c41d5fbba0cd61017a245b88ede2e2661de89b9345af29efe

/data/user/0/com.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/oat/x86/base.apk.jdkhjbg1.odex

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.baidu.searchbox/shared_prefs/multidex.version.xml

MD5 2bec53f6bfebf5b5e85483fdcaba9290
SHA1 818451f3acec996cc3c24a7f173147cdcb12b13f
SHA256 9b77a24452e831b516cc20d3e99f18f04fa6c23adb7f8db66e9a98d4c2939178
SHA512 78e2a8542e3c6fe27356c7d3401c4fe9a93c6908ec5b571c2b4e4ea984e8d084898a719364554d348a292600a2731f64a65d9c71061524f13ef926d824c553b4

/data/user/0/com.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/base.apk.jdkhjbg1.xbY

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.baidu.searchbox/Yfzjhhjpkv/bzxjopjhbhhbhjg/base.apk.jdkhjbg1.xbY

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

/data/user/0/com.baidu.searchbox/shared_prefs/Voicemail.xml

MD5 66104f103e9fa34e2c1bf3355c6c5df7
SHA1 ae95b8419defbd0846ed911356b7439e3b2a1141
SHA256 2b4e4d16493f1ccc04d86c0455ead2fa46b3d6111b1b1f5b0f09dd53ed47a193
SHA512 4d7f94091c29cdb8df11f36c65a440c77beff5b62557f422898e9e514c6ea389ada804f9a4648bbcfd657ec11779830c3615978dd12a2de667ae7f16b4730919