Malware Analysis Report

2024-10-19 02:58

Sample ID 240107-yb51cacgaj
Target a11d1c066d6bd8e35bec3f985649e112.exe
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.exe 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

2024-01-07 19:37

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-07 19:37

Reported

2024-01-07 19:40

Platform

win10v2004-20231222-en

Max time kernel

148s

Max time network

151s

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 2786105041

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 4.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 50.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.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 www.microsoft.com udp
PH 23.37.1.217:443 www.microsoft.com tcp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 133.250.112.20.in-addr.arpa udp
US 8.8.8.8:53 217.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 195.123.233.106:443 tcp
US 8.8.8.8:53 14.227.111.52.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

Files

memory/628-0-0x000001B835A40000-0x000001B835B1C000-memory.dmp

memory/4508-1-0x000001CA716D0000-0x000001CA717AC000-memory.dmp

memory/4508-2-0x000001CA716D0000-0x000001CA717AC000-memory.dmp

memory/628-3-0x000001B835A40000-0x000001B835B1C000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-07 19:37

Reported

2024-01-07 19:40

Platform

win7-20231215-en

Max time kernel

123s

Max time network

133s

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 2762225287

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/1716-0-0x0000000001EE0000-0x0000000001FBC000-memory.dmp

memory/2224-1-0x0000000001ED0000-0x0000000001FAC000-memory.dmp

memory/2224-2-0x0000000001ED0000-0x0000000001FAC000-memory.dmp

memory/1716-3-0x0000000001EE0000-0x0000000001FBC000-memory.dmp