Malware Analysis Report

2024-10-19 02:59

Sample ID 231230-2zmqfsahf4
Target 1f45bcf1fb8b7ef74a57d19a371f41cf
SHA256 aee116011409a5bec7d356bd8f704df0a361fb029bf20178d49e02607798d9a1
Tags
bazarloader dropper loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

aee116011409a5bec7d356bd8f704df0a361fb029bf20178d49e02607798d9a1

Threat Level: Known bad

The file 1f45bcf1fb8b7ef74a57d19a371f41cf was found to be: Known bad.

Malicious Activity Summary

bazarloader dropper loader

Bazar Loader

Bazar/Team9 Loader payload

Unsigned PE

Modifies registry key

Runs ping.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-30 23:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-30 23:01

Reported

2024-01-04 18:49

Platform

win7-20231129-en

Max time kernel

146s

Max time network

121s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1f45bcf1fb8b7ef74a57d19a371f41cf.dll

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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Modifies registry key

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

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious behavior: CmdExeWriteProcessMemorySpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1f45bcf1fb8b7ef74a57d19a371f41cf.dll

C:\Windows\system32\cmd.exe

cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\1f45bcf1fb8b7ef74a57d19a371f41cf.dll" mscp ahis & exit

C:\Windows\system32\PING.EXE

ping 127.0.0.1 -n 8

C:\Windows\system32\regsvr32.exe

"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\1f45bcf1fb8b7ef74a57d19a371f41cf.dll" mscp ahis

C:\Windows\system32\cmd.exe

cmd.exe /c echo %temp%

C:\Windows\system32\reg.exe

reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v RealtechUpdate /t REG_SZ /d "\"C:\Windows\system32\regsvr32.exe\" /s \"C:\Users\Admin\AppData\Local\Temp\Damp\lrmeihkpubjk.exe\" mscp arih"

C:\Windows\system32\PING.EXE

ping 127.0.0.1 -n 8

C:\Windows\system32\cmd.exe

cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\Damp\lrmeihkpubjk.exe" mscp arih & exit

C:\Windows\system32\cmd.exe

cmd.exe /c reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v RealtechUpdate /t REG_SZ /d "\"C:\Windows\system32\regsvr32.exe\" /s \"C:\Users\Admin\AppData\Local\Temp\Damp\lrmeihkpubjk.exe\" mscp arih"

Network

N/A

Files

memory/2928-0-0x0000000027700000-0x0000000027764000-memory.dmp

memory/2928-1-0x000007FEF6CC0000-0x000007FEF6E62000-memory.dmp

memory/2928-10-0x0000000027700000-0x0000000027764000-memory.dmp

memory/2928-9-0x000007FEF6CC0000-0x000007FEF6E62000-memory.dmp

memory/2696-11-0x0000000027660000-0x00000000276C4000-memory.dmp

memory/2696-12-0x000007FEF63E0000-0x000007FEF6582000-memory.dmp

memory/2696-19-0x0000000027660000-0x00000000276C4000-memory.dmp

memory/2696-18-0x000007FEF63E0000-0x000007FEF6582000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-30 23:01

Reported

2024-01-04 18:50

Platform

win10v2004-20231222-en

Max time kernel

147s

Max time network

147s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1f45bcf1fb8b7ef74a57d19a371f41cf.dll

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
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

Modifies registry key

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

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2332 wrote to memory of 208 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2332 wrote to memory of 208 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 208 wrote to memory of 4936 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 208 wrote to memory of 4936 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 208 wrote to memory of 1960 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 208 wrote to memory of 1960 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1960 wrote to memory of 2268 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 1960 wrote to memory of 2268 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1f45bcf1fb8b7ef74a57d19a371f41cf.dll

C:\Windows\system32\PING.EXE

ping 127.0.0.1 -n 8

C:\Windows\system32\cmd.exe

cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\1f45bcf1fb8b7ef74a57d19a371f41cf.dll" mscp ahis & exit

C:\Windows\system32\regsvr32.exe

"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\1f45bcf1fb8b7ef74a57d19a371f41cf.dll" mscp ahis

C:\Windows\system32\cmd.exe

cmd.exe /c echo %temp%

C:\Windows\system32\PING.EXE

ping 127.0.0.1 -n 8

C:\Windows\system32\reg.exe

reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v RealtechUpdate /t REG_SZ /d "\"C:\Windows\system32\regsvr32.exe\" /s \"C:\Users\Admin\AppData\Local\Temp\Damp\ahlucfl.exe\" mscp arih"

C:\Windows\system32\cmd.exe

cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\Damp\ahlucfl.exe" mscp arih & exit

C:\Windows\system32\cmd.exe

cmd.exe /c reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v RealtechUpdate /t REG_SZ /d "\"C:\Windows\system32\regsvr32.exe\" /s \"C:\Users\Admin\AppData\Local\Temp\Damp\ahlucfl.exe\" mscp arih"

Network

Country Destination Domain Proto
US 8.8.8.8:53 16.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 85.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.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 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 83.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 210.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 73.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
GB 88.221.135.83:80 tcp
GB 88.221.135.83:80 tcp
GB 88.221.135.83:80 tcp
US 8.8.8.8:53 219.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 8.8.8.8:53 udp
GB 88.221.135.219:80 tcp
GB 88.221.135.219:80 tcp
US 8.8.8.8:53 27.178.89.13.in-addr.arpa udp
GB 88.221.135.219:80 tcp

Files

memory/2332-0-0x0000000027AF0000-0x0000000027B54000-memory.dmp

memory/2332-1-0x00007FF846370000-0x00007FF846512000-memory.dmp

memory/2332-9-0x00007FF846370000-0x00007FF846512000-memory.dmp

memory/2332-10-0x0000000027AF0000-0x0000000027B54000-memory.dmp

memory/1960-11-0x0000000027BC0000-0x0000000027C24000-memory.dmp

memory/1960-12-0x00007FF846370000-0x00007FF846512000-memory.dmp

memory/1960-17-0x00007FF846370000-0x00007FF846512000-memory.dmp

memory/1960-18-0x0000000027BC0000-0x0000000027C24000-memory.dmp