Malware Analysis Report

2024-11-15 09:21

Sample ID 231120-qgndgsha61
Target rete.zip
SHA256 ffa38121ce884376872a6ee925945e2c7ae39ecedd04ba3c52938d6241956456
Tags
systembc trojan
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

ffa38121ce884376872a6ee925945e2c7ae39ecedd04ba3c52938d6241956456

Threat Level: Known bad

The file rete.zip was found to be: Known bad.

Malicious Activity Summary

systembc trojan

SystemBC

Blocklisted process makes network request

Loads dropped DLL

Checks computer location settings

Enumerates physical storage devices

Suspicious behavior: GetForegroundWindowSpam

Modifies registry class

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-20 13:14

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-20 13:14

Reported

2023-11-20 13:16

Platform

win7-20231023-en

Max time kernel

118s

Max time network

121s

Command Line

"C:\Windows\System32\rundll32.exe" "C:\Windows\System32\ieframe.dll",OpenURL C:\Users\Admin\AppData\Local\Temp\Agenzia_Entrate.url

Signatures

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\System32\rundll32.exe N/A

Processes

C:\Windows\System32\rundll32.exe

"C:\Windows\System32\rundll32.exe" "C:\Windows\System32\ieframe.dll",OpenURL C:\Users\Admin\AppData\Local\Temp\Agenzia_Entrate.url

Network

N/A

Files

memory/2796-0-0x0000000001D20000-0x0000000001D21000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-20 13:14

Reported

2023-11-20 13:16

Platform

win10v2004-20231023-en

Max time kernel

139s

Max time network

156s

Command Line

"C:\Windows\System32\rundll32.exe" "C:\Windows\System32\ieframe.dll",OpenURL C:\Users\Admin\AppData\Local\Temp\Agenzia_Entrate.url

Signatures

SystemBC

trojan systembc

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000\Control Panel\International\Geo\Nation C:\Windows\System32\rundll32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000_Classes\Local Settings C:\Windows\System32\rundll32.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\System32\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4216 wrote to memory of 2748 N/A C:\Windows\System32\rundll32.exe C:\Windows\System32\control.exe
PID 4216 wrote to memory of 2748 N/A C:\Windows\System32\rundll32.exe C:\Windows\System32\control.exe
PID 2748 wrote to memory of 1640 N/A C:\Windows\System32\control.exe C:\Windows\system32\rundll32.exe
PID 2748 wrote to memory of 1640 N/A C:\Windows\System32\control.exe C:\Windows\system32\rundll32.exe
PID 1640 wrote to memory of 260 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1640 wrote to memory of 260 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1640 wrote to memory of 260 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\System32\rundll32.exe

"C:\Windows\System32\rundll32.exe" "C:\Windows\System32\ieframe.dll",OpenURL C:\Users\Admin\AppData\Local\Temp\Agenzia_Entrate.url

C:\Windows\System32\control.exe

"C:\Windows\System32\control.exe" "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5T0U3BIO\config[1].cpl",

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" Shell32.dll,Control_RunDLL "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5T0U3BIO\config[1].cpl",

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\SysWOW64\rundll32.exe" "C:\Windows\SysWOW64\shell32.dll",#44 "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5T0U3BIO\config[1].cpl",

Network

Country Destination Domain Proto
RU 62.173.141.118:445 tcp
US 8.8.8.8:53 118.141.173.62.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 58.252.72.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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
RU 62.173.140.37:4001 tcp
US 8.8.8.8:53 37.140.173.62.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 84.65.42.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5T0U3BIO\config[1].cpl

MD5 509b68725e595b30fb2f38c8ea2cf9c4
SHA1 1aff17b87ff213c1a8f4c8cfe48782e636b6fb32
SHA256 4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558
SHA512 dc7a8e6404c3b1e2600c16c66ed023e6e5f7010efa96fa2c4c5abf8fe4a8c4847abd133a1198d4bb12224c93d4ede1ef1dfe1c6c584749160e9beff2a1585389

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5T0U3BIO\config[1].cpl

MD5 509b68725e595b30fb2f38c8ea2cf9c4
SHA1 1aff17b87ff213c1a8f4c8cfe48782e636b6fb32
SHA256 4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558
SHA512 dc7a8e6404c3b1e2600c16c66ed023e6e5f7010efa96fa2c4c5abf8fe4a8c4847abd133a1198d4bb12224c93d4ede1ef1dfe1c6c584749160e9beff2a1585389

memory/260-6-0x0000000002310000-0x0000000002419000-memory.dmp

memory/260-7-0x00000000007F0000-0x00000000007F7000-memory.dmp