Malware Analysis Report

2024-10-19 02:59

Sample ID 231227-d3anashcc5
Target a11d1c066d6bd8e35bec3f985649e112
SHA256 a701108be3d3802eba7c79c5c68afc0fee833595cdada8df5ac02ef9b97d2ad1
Tags
bazarloader dropper loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a701108be3d3802eba7c79c5c68afc0fee833595cdada8df5ac02ef9b97d2ad1

Threat Level: Known bad

The file a11d1c066d6bd8e35bec3f985649e112 was found to be: Known bad.

Malicious Activity Summary

bazarloader dropper loader

Bazar Loader

Bazar/Team9 Loader payload

Blocklisted process makes network request

Unsigned PE

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-27 03:31

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-27 03:31

Reported

2024-01-07 13:40

Platform

win10v2004-20231215-en

Max time kernel

172s

Max time network

188s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\a11d1c066d6bd8e35bec3f985649e112.dll,#1

Signatures

Bazar Loader

loader dropper bazarloader

Bazar/Team9 Loader payload

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

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\a11d1c066d6bd8e35bec3f985649e112.dll,#1

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\a11d1c066d6bd8e35bec3f985649e112.dll,#1 478386209

Network

Country Destination Domain Proto
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 149.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 202.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 microsoft.com udp
US 195.123.233.106:443 tcp
US 20.112.250.133:443 microsoft.com tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 www.microsoft.com udp
US 2.17.5.133:443 www.microsoft.com tcp
US 8.8.8.8:53 133.250.112.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 133.5.17.2.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 100.5.17.2.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 195.123.233.106:443 tcp
US 8.8.8.8:53 209.80.50.20.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp

Files

memory/436-0-0x000001B3D5C60000-0x000001B3D5D3C000-memory.dmp

memory/4084-1-0x0000016F837F0000-0x0000016F838CC000-memory.dmp

memory/4084-2-0x0000016F837F0000-0x0000016F838CC000-memory.dmp

memory/436-3-0x000001B3D5C60000-0x000001B3D5D3C000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-27 03:31

Reported

2024-01-07 13:40

Platform

win7-20231215-en

Max time kernel

139s

Max time network

173s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\a11d1c066d6bd8e35bec3f985649e112.dll,#1

Signatures

Bazar Loader

loader dropper bazarloader

Bazar/Team9 Loader payload

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

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\a11d1c066d6bd8e35bec3f985649e112.dll,#1

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\a11d1c066d6bd8e35bec3f985649e112.dll,#1 1065787860

Network

Country Destination Domain Proto
US 8.8.8.8:53 microsoft.com udp
US 195.123.233.106:443 tcp
US 20.112.250.133:443 microsoft.com tcp
US 20.112.250.133:443 microsoft.com tcp
US 195.123.233.106:443 tcp
US 195.123.233.106:443 tcp
US 195.123.233.106:443 tcp

Files

memory/2736-0-0x0000000000290000-0x000000000036C000-memory.dmp

memory/2764-1-0x0000000001C00000-0x0000000001CDC000-memory.dmp

memory/2764-2-0x0000000001C00000-0x0000000001CDC000-memory.dmp

memory/2736-3-0x0000000000290000-0x000000000036C000-memory.dmp