Malware Analysis Report

2024-10-23 17:37

Sample ID 231225-pxkrvsehe7
Target 1f45bcf1fb8b7ef74a57d19a371f41cf
SHA256 aee116011409a5bec7d356bd8f704df0a361fb029bf20178d49e02607798d9a1
Tags
bazarloader dropper loader persistence
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 persistence

Bazar Loader

Bazar/Team9 Loader payload

Adds Run key to start application

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

2023-12-25 12:42

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-25 12:42

Reported

2023-12-28 08:02

Platform

win7-20231215-en

Max time kernel

150s

Max time network

141s

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\RealtechUpdate = "\"C:\\Windows\\system32\\regsvr32.exe\" /s \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Damp\\gndrvwlsps.exe\" mscp arih" C:\Windows\system32\reg.exe 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
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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2484 wrote to memory of 2632 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2484 wrote to memory of 2632 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2484 wrote to memory of 2632 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2632 wrote to memory of 2256 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2632 wrote to memory of 2256 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2632 wrote to memory of 2256 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2632 wrote to memory of 2972 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2632 wrote to memory of 2972 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2632 wrote to memory of 2972 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2632 wrote to memory of 2972 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2632 wrote to memory of 2972 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2972 wrote to memory of 1508 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2972 wrote to memory of 1508 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2972 wrote to memory of 1508 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2972 wrote to memory of 2876 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2972 wrote to memory of 2876 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2972 wrote to memory of 2876 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2972 wrote to memory of 2884 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2972 wrote to memory of 2884 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2972 wrote to memory of 2884 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2884 wrote to memory of 736 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2884 wrote to memory of 736 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2884 wrote to memory of 736 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2876 wrote to memory of 840 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\reg.exe
PID 2876 wrote to memory of 840 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\reg.exe
PID 2876 wrote to memory of 840 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\reg.exe
PID 2884 wrote to memory of 1344 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2884 wrote to memory of 1344 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2884 wrote to memory of 1344 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2884 wrote to memory of 1344 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2884 wrote to memory of 1344 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe

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\cmd.exe

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

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\gndrvwlsps.exe\" mscp arih"

C:\Windows\system32\regsvr32.exe

"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\Damp\gndrvwlsps.exe" mscp arih

Network

N/A

Files

memory/2484-0-0x0000000027280000-0x00000000272E4000-memory.dmp

memory/2484-1-0x000007FEF6720000-0x000007FEF68C2000-memory.dmp

memory/2484-7-0x000007FEF6720000-0x000007FEF68C2000-memory.dmp

memory/2484-8-0x0000000027280000-0x00000000272E4000-memory.dmp

memory/2972-9-0x0000000027270000-0x00000000272D4000-memory.dmp

memory/2972-10-0x000007FEF5E40000-0x000007FEF5FE2000-memory.dmp

memory/2972-17-0x000007FEF5E40000-0x000007FEF5FE2000-memory.dmp

memory/2972-18-0x0000000027270000-0x00000000272D4000-memory.dmp

\Users\Admin\AppData\Local\Temp\Damp\gndrvwlsps.exe

MD5 18c9c5e47291dc21a5b6a895a0c17dd5
SHA1 e853f4190362a78cf5c17d48174136b0236105f6
SHA256 8e969c46089edb69ec706fb2f476e24765ccd5227e19216b6391580dbc778a94
SHA512 e35e9513bc306df1afb8cd3fd716f34399c282e6b636c1031b5f9a9693baa6ad221b2371276a79ed1eae6b8466f3555abde4a569b364928f64c8f66720697c81

C:\Users\Admin\AppData\Local\Temp\Damp\gndrvwlsps.exe

MD5 c546959c0164fd61640f4e3b58e109b2
SHA1 50931075fa8765ad5bec2afb68ae2a1a073a06f2
SHA256 4030f8da4d3d5ff6f12997a429b47f41815e1a50474c247af0bfe227ea0e492e
SHA512 963c733b82aeab6882249b367806d519df646275dd470f168423e658fe7e63c38a2531397719c821391a1278c3a9c3ab5668f3b7289a47cf5091dcb13556b287

memory/1344-21-0x0000000001CD0000-0x0000000001D34000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-25 12:42

Reported

2023-12-28 08:01

Platform

win10v2004-20231215-en

Max time kernel

148s

Max time network

46s

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

Runs ping.exe

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4864 wrote to memory of 544 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 4864 wrote to memory of 544 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 544 wrote to memory of 4324 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 544 wrote to memory of 4324 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 544 wrote to memory of 4784 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 544 wrote to memory of 4784 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 148.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.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 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 udp
N/A 52.142.223.178:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 20.54.110.119:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp
GB 87.248.205.0:80 tcp
GB 87.248.205.0:80 tcp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
GB 88.221.135.211:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
GB 87.248.205.0:80 tcp
GB 87.248.205.0:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.16.110.114:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
N/A 52.142.223.178:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 87.248.205.0:80 tcp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
N/A 52.111.229.43:443 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 udp
N/A 52.142.223.178:80 tcp
US 8.8.8.8:53 udp
N/A 20.199.58.43:443 tcp
N/A 20.199.58.43:443 tcp
N/A 20.199.58.43:443 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.134.18:80 tcp
N/A 88.221.134.18:80 tcp
N/A 88.221.134.18:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
N/A 88.221.134.18:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.134.18:80 tcp
GB 96.17.178.176:80 tcp
N/A 88.221.134.18:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
N/A 20.199.58.43:443 tcp
N/A 20.199.58.43:443 tcp
N/A 88.221.134.18:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.135.217:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
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 204.79.197.200:443 tcp
GB 96.16.110.114:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
N/A 52.142.223.178:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.135.217:80 tcp
N/A 88.221.135.217:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
N/A 88.221.135.217:80 tcp
N/A 88.221.135.217:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
N/A 88.221.135.217:80 tcp
N/A 88.221.135.217:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
N/A 20.231.121.79:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp

Files

memory/4864-0-0x0000000027FC0000-0x0000000028024000-memory.dmp

memory/4864-1-0x00007FFE69250000-0x00007FFE693F2000-memory.dmp

memory/4864-11-0x0000000027FC0000-0x0000000028024000-memory.dmp

memory/4864-10-0x00007FFE69250000-0x00007FFE693F2000-memory.dmp

memory/4784-12-0x00000000277C0000-0x0000000027824000-memory.dmp

memory/4784-13-0x00007FFE59AD0000-0x00007FFE59C72000-memory.dmp