Malware Analysis Report

2024-11-15 09:22

Sample ID 231117-tp1wbsag89
Target NEAS.fb8fc294dfeda915ae10f066eb3b85abdf47ca7f91cd94c60429b43177887cbd.url
SHA256 fb8fc294dfeda915ae10f066eb3b85abdf47ca7f91cd94c60429b43177887cbd
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

fb8fc294dfeda915ae10f066eb3b85abdf47ca7f91cd94c60429b43177887cbd

Threat Level: Known bad

The file NEAS.fb8fc294dfeda915ae10f066eb3b85abdf47ca7f91cd94c60429b43177887cbd.url 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

Modifies registry class

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-17 16:14

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-17 16:14

Reported

2023-11-17 16:17

Platform

win7-20231020-en

Max time kernel

121s

Max time network

127s

Command Line

"C:\Windows\System32\rundll32.exe" "C:\Windows\System32\ieframe.dll",OpenURL C:\Users\Admin\AppData\Local\Temp\NEAS.fb8fc294dfeda915ae10f066eb3b85abdf47ca7f91cd94c60429b43177887cbd.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\NEAS.fb8fc294dfeda915ae10f066eb3b85abdf47ca7f91cd94c60429b43177887cbd.url

Network

N/A

Files

memory/2476-0-0x00000000021B0000-0x00000000021B1000-memory.dmp

memory/2476-1-0x00000000021B0000-0x00000000021B1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-17 16:14

Reported

2023-11-17 16:17

Platform

win10v2004-20231023-en

Max time kernel

135s

Max time network

149s

Command Line

"C:\Windows\System32\rundll32.exe" "C:\Windows\System32\ieframe.dll",OpenURL C:\Users\Admin\AppData\Local\Temp\NEAS.fb8fc294dfeda915ae10f066eb3b85abdf47ca7f91cd94c60429b43177887cbd.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-1-5-21-3125601242-331447593-1512828465-1000\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-1-5-21-3125601242-331447593-1512828465-1000_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 3024 wrote to memory of 3032 N/A C:\Windows\System32\rundll32.exe C:\Windows\System32\control.exe
PID 3024 wrote to memory of 3032 N/A C:\Windows\System32\rundll32.exe C:\Windows\System32\control.exe
PID 3032 wrote to memory of 324 N/A C:\Windows\System32\control.exe C:\Windows\system32\rundll32.exe
PID 3032 wrote to memory of 324 N/A C:\Windows\System32\control.exe C:\Windows\system32\rundll32.exe
PID 324 wrote to memory of 2120 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 324 wrote to memory of 2120 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 324 wrote to memory of 2120 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\NEAS.fb8fc294dfeda915ae10f066eb3b85abdf47ca7f91cd94c60429b43177887cbd.url

C:\Windows\System32\control.exe

"C:\Windows\System32\control.exe" "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\E51EX1F6\wizard[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\E51EX1F6\wizard[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\E51EX1F6\wizard[1].cpl",

Network

Country Destination Domain Proto
RU 62.173.141.114:445 tcp
US 8.8.8.8:53 114.141.173.62.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 254.3.248.8.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 198.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.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
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
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 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\E51EX1F6\wizard[1].cpl

MD5 cac81707eba1be452f548e410275a0ac
SHA1 dd4b3bbd8bf357bbdeeb593e94ff0bf9b5ae19f2
SHA256 2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84
SHA512 01b6b45ec3c5ef4a0162164dfd69c15b08ed37082778ef97d0f1486bc82b4b1659a90705a4d9be42b9d25c8776e20011845a9f5e4498400b11cf14a3310df8d7

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\E51EX1F6\wizard[1].cpl

MD5 cac81707eba1be452f548e410275a0ac
SHA1 dd4b3bbd8bf357bbdeeb593e94ff0bf9b5ae19f2
SHA256 2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84
SHA512 01b6b45ec3c5ef4a0162164dfd69c15b08ed37082778ef97d0f1486bc82b4b1659a90705a4d9be42b9d25c8776e20011845a9f5e4498400b11cf14a3310df8d7