Malware Analysis Report

2025-06-16 05:30

Sample ID 211130-y7cnnsgdbm
Target data.dll
SHA256 078968cfc9af97a102a362ad87cb30e8d3d33d28d0dd7c97fc31e85ff3950611
Tags
bazarloader dropper loader
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

078968cfc9af97a102a362ad87cb30e8d3d33d28d0dd7c97fc31e85ff3950611

Threat Level: Known bad

The file data.dll was found to be: Known bad.

Malicious Activity Summary

bazarloader dropper loader

Bazar Loader

Bazar/Team9 Loader payload

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-11-30 20:25

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-11-30 20:25

Reported

2021-11-30 20:27

Platform

win7-en-20211014

Max time kernel

126s

Max time network

138s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\data.dll

Signatures

Bazar Loader

loader dropper bazarloader

Bazar/Team9 Loader payload

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1116 wrote to memory of 1336 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1116 wrote to memory of 1336 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1116 wrote to memory of 1336 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1116 wrote to memory of 1336 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1116 wrote to memory of 1336 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\data.dll

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\data.dll

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\data.dll,DllRegisterServer {B5FA5DB3-71B0-4D06-9F2C-9F686B1DD40D}

Network

Country Destination Domain Proto
US 8.8.8.8:53 microsoft.com udp
SG 104.215.148.63:443 microsoft.com tcp
SG 104.215.148.63:443 microsoft.com tcp
US 162.33.179.216:443 tcp
US 162.33.179.216:443 tcp

Files

memory/1116-55-0x000007FEFBB91000-0x000007FEFBB93000-memory.dmp

memory/1336-56-0x0000000000000000-mapping.dmp

memory/1336-58-0x00000002F77D1000-0x00000002F77EE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-11-30 20:25

Reported

2021-11-30 20:27

Platform

win10-en-20211014

Max time kernel

121s

Max time network

126s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\data.dll

Signatures

Bazar Loader

loader dropper bazarloader

Bazar/Team9 Loader payload

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2704 wrote to memory of 2724 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 2704 wrote to memory of 2724 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\data.dll

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\data.dll

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\data.dll,DllRegisterServer {C56AC8DB-4742-4122-BBAC-CC43C05A9354}

Network

Country Destination Domain Proto
IE 52.109.76.32:443 tcp
US 8.8.8.8:53 time.windows.com udp
NL 20.101.57.9:123 time.windows.com udp
US 8.8.8.8:53 microsoft.com udp
SG 104.215.148.63:443 microsoft.com tcp
US 162.33.179.216:443 tcp

Files

memory/2724-115-0x0000000000000000-mapping.dmp

memory/2724-116-0x00000002F77D1000-0x00000002F77EE000-memory.dmp