Malware Analysis Report

2024-09-23 13:52

Sample ID 240628-3y5ejsyenl
Target 36f40d5a11d886a2280c57859cd5f22de2d78c87dcdb52ea601089745eeee494.apk
SHA256 36f40d5a11d886a2280c57859cd5f22de2d78c87dcdb52ea601089745eeee494
Tags
slocker evasion ransomware stealth trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

36f40d5a11d886a2280c57859cd5f22de2d78c87dcdb52ea601089745eeee494

Threat Level: Known bad

The file 36f40d5a11d886a2280c57859cd5f22de2d78c87dcdb52ea601089745eeee494.apk was found to be: Known bad.

Malicious Activity Summary

slocker evasion ransomware stealth trojan

SLocker payload

Slocker family

Removes its main activity from the application launcher

Requests dangerous framework permissions

Changes the wallpaper (common with ransomware activity)

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-28 23:56

Signatures

SLocker payload

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

Slocker family

slocker

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 write to external storage. android.permission.WRITE_EXTERNAL_STORAGE N/A N/A
Allows an application to read from external storage. android.permission.READ_EXTERNAL_STORAGE N/A N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-06-28 23:56

Reported

2024-06-29 00:00

Platform

android-x86-arm-20240624-en

Max time kernel

3s

Max time network

199s

Command Line

com.android.tencent.zdevs.bah

Signatures

N/A

Processes

com.android.tencent.zdevs.bah

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.179.238:443 android.apis.google.com tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
US 1.1.1.1:53 biaozhunshijian.51240.com udp
CN 47.98.143.170:80 biaozhunshijian.51240.com tcp
CN 47.98.143.170:80 biaozhunshijian.51240.com tcp
GB 216.58.204.74:443 semanticlocation-pa.googleapis.com tcp
GB 142.250.179.226:443 tcp
GB 142.250.179.238:443 android.apis.google.com tcp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 23:56

Reported

2024-06-29 00:02

Platform

android-x64-20240624-en

Max time kernel

250s

Max time network

342s

Command Line

com.android.tencent.zdevs.bah

Signatures

N/A

Processes

com.android.tencent.zdevs.bah

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.179.232:443 ssl.google-analytics.com tcp
GB 142.250.180.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.206:443 android.apis.google.com tcp
GB 172.217.16.228:443 tcp
GB 172.217.16.228:443 tcp
GB 216.58.213.10:443 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 216.58.212.202:443 semanticlocation-pa.googleapis.com tcp
US 1.1.1.1:53 accounts.google.com udp
BE 142.251.168.84:443 accounts.google.com tcp
US 1.1.1.1:53 accounts.google.com udp
BE 74.125.133.84:443 accounts.google.com tcp
US 1.1.1.1:53 static.xx.fbcdn.net udp
GB 157.240.221.16:443 static.xx.fbcdn.net tcp
US 1.1.1.1:53 www.google.com udp
GB 142.250.187.228:443 www.google.com tcp
GB 142.250.179.238:443 tcp
GB 142.250.200.34:443 tcp
US 1.1.1.1:53 biaozhunshijian.51240.com udp
CN 47.97.155.90:80 biaozhunshijian.51240.com tcp
CN 47.97.155.90:80 biaozhunshijian.51240.com tcp
GB 172.217.169.42:443 semanticlocation-pa.googleapis.com tcp
GB 172.217.169.42:443 semanticlocation-pa.googleapis.com tcp
GB 216.58.201.99:443 tcp
GB 216.58.201.99:443 tcp
GB 216.58.201.99:443 tcp
GB 216.58.212.202:443 semanticlocation-pa.googleapis.com tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 23:56

Reported

2024-06-29 00:10

Platform

android-x64-arm64-20240624-en

Max time kernel

778s

Max time network

704s

Command Line

com.android.tencent.zdevs.bah

Signatures

Removes its main activity from the application launcher

stealth trojan evasion
Description Indicator Process Target
N/A N/A N/A N/A

Changes the wallpaper (common with ransomware activity)

ransomware
Description Indicator Process Target
Framework service call android.app.IWallpaperManager.setWallpaper N/A N/A

Processes

com.android.tencent.zdevs.bah

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.178.8:443 ssl.google-analytics.com tcp
GB 142.250.180.14:443 tcp
GB 142.250.180.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 172.217.16.238:443 android.apis.google.com tcp
GB 142.250.179.228:443 tcp
GB 142.250.179.228:443 tcp
GB 142.250.187.227:443 tcp
US 1.1.1.1:53 biaozhunshijian.51240.com udp
CN 121.199.52.95:80 biaozhunshijian.51240.com tcp
GB 172.217.169.78:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 216.58.204.78:443 android.apis.google.com tcp

Files

/data/system/users/0/wallpaper_orig

MD5 0bc1d91b498943c8c869953e4a7cd520
SHA1 b4b46e3bfe914fe75f2e358637eb624d3945d38b
SHA256 a1a8d601c9f63a1ef2f187bce5f23c78dbbdbc9b42f12825d816a2097d3bb08a
SHA512 e0d9985e61705c3dc92846d27e656b2e790bd9b57edc39b11a445d14491ce1b1e746cdd789b670f8331d93218eb04eb74b9f6d19535793ea744c9f713135f466

Analysis: behavioral3

Detonation Overview

Submitted

2024-06-28 23:56

Reported

2024-06-29 00:02

Platform

android-33-x64-arm64-20240624-en

Max time kernel

319s

Max time network

329s

Command Line

com.android.tencent.zdevs.bah

Signatures

N/A

Processes

com.android.tencent.zdevs.bah

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 142.250.187.228:443 udp
GB 142.250.187.228:443 tcp
US 162.159.61.3:443 tcp
US 162.159.61.3:443 tcp
US 162.159.61.3:443 udp
GB 142.250.187.227:443 tcp
GB 142.250.187.227:443 udp
GB 142.250.187.228:443 udp
GB 142.250.178.4:443 udp
GB 142.250.178.4:443 tcp
GB 216.58.204.67:443 tcp
GB 216.58.201.98:443 tcp
GB 216.58.201.98:443 tcp
GB 216.58.201.98:443 tcp
GB 216.58.213.6:443 tcp
GB 142.250.200.2:443 tcp
GB 216.58.212.206:443 tcp
US 216.239.32.36:443 tcp
GB 172.217.169.1:443 tcp
GB 216.58.213.1:443 tcp
GB 172.217.169.1:443 tcp
GB 172.217.169.1:443 tcp
GB 172.217.169.1:443 tcp
GB 172.217.169.1:443 tcp
GB 216.58.204.67:443 tcp
US 172.64.41.3:443 tcp
US 172.64.41.3:443 tcp
US 1.1.1.1:53 www.google.com udp
GB 216.58.201.100:443 www.google.com udp
US 1.1.1.1:53 newsstand.googleusercontent.com udp
US 1.1.1.1:53 encrypted-tbn0.gstatic.com udp
GB 142.250.178.1:443 newsstand.googleusercontent.com udp
GB 142.250.187.238:443 encrypted-tbn0.gstatic.com udp
GB 142.250.178.1:443 newsstand.googleusercontent.com tcp
GB 142.250.178.1:443 newsstand.googleusercontent.com tcp
US 1.1.1.1:53 social-magazines-prod.storage.googleapis.com udp
GB 172.217.16.251:443 social-magazines-prod.storage.googleapis.com udp

Files

N/A