Malware Analysis Report

2025-04-03 09:42

Sample ID 230411-k7a8ysbe84
Target 84499558c48c4fdebac20cab68253aa7.exe
SHA256 ca958072c2483f5cfab83972b3e5a25a163eed2d0d6df7d310ddf200a6fec53c
Tags
systembc trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

ca958072c2483f5cfab83972b3e5a25a163eed2d0d6df7d310ddf200a6fec53c

Threat Level: Known bad

The file 84499558c48c4fdebac20cab68253aa7.exe was found to be: Known bad.

Malicious Activity Summary

systembc trojan

SystemBC

Executes dropped EXE

Drops file in Windows directory

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-04-11 09:14

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-04-11 09:14

Reported

2023-04-11 09:16

Platform

win7-20230220-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\fbcrwn\ccoppjj.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\ccoppjj.job C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe N/A
File opened for modification C:\Windows\Tasks\ccoppjj.job C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1440 wrote to memory of 1764 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\fbcrwn\ccoppjj.exe
PID 1440 wrote to memory of 1764 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\fbcrwn\ccoppjj.exe
PID 1440 wrote to memory of 1764 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\fbcrwn\ccoppjj.exe
PID 1440 wrote to memory of 1764 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\fbcrwn\ccoppjj.exe

Processes

C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe

"C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {45090914-468F-4883-A28D-A99DBB9B8C43} S-1-5-18:NT AUTHORITY\System:Service:

C:\ProgramData\fbcrwn\ccoppjj.exe

C:\ProgramData\fbcrwn\ccoppjj.exe start

Network

Country Destination Domain Proto
NL 109.205.214.18:443 tcp
NL 109.205.214.18:443 tcp
NL 109.205.214.18:443 tcp

Files

memory/1500-55-0x00000000001B0000-0x00000000001B9000-memory.dmp

memory/1500-56-0x0000000000400000-0x0000000000462000-memory.dmp

C:\ProgramData\fbcrwn\ccoppjj.exe

MD5 84499558c48c4fdebac20cab68253aa7
SHA1 d4518c621d32ebc483a8f0761cf6ed0fe3c7b8ce
SHA256 ca958072c2483f5cfab83972b3e5a25a163eed2d0d6df7d310ddf200a6fec53c
SHA512 00ad7c29108eb787d0283bb6a6c2955ff3b4a64254d03767c1c21e8bf3a1e14149958c9de8f4fd2f6489972b4573b07abc18a3bc2e96cba5fe2d4852d204d65a

C:\ProgramData\fbcrwn\ccoppjj.exe

MD5 84499558c48c4fdebac20cab68253aa7
SHA1 d4518c621d32ebc483a8f0761cf6ed0fe3c7b8ce
SHA256 ca958072c2483f5cfab83972b3e5a25a163eed2d0d6df7d310ddf200a6fec53c
SHA512 00ad7c29108eb787d0283bb6a6c2955ff3b4a64254d03767c1c21e8bf3a1e14149958c9de8f4fd2f6489972b4573b07abc18a3bc2e96cba5fe2d4852d204d65a

memory/1764-70-0x0000000000400000-0x0000000000462000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-04-11 09:14

Reported

2023-04-11 09:16

Platform

win10v2004-20230220-en

Max time kernel

145s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\xofjvbf\ssfsb.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\ssfsb.job C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe N/A
File opened for modification C:\Windows\Tasks\ssfsb.job C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe

"C:\Users\Admin\AppData\Local\Temp\84499558c48c4fdebac20cab68253aa7.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2976 -ip 2976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2976 -s 960

C:\ProgramData\xofjvbf\ssfsb.exe

C:\ProgramData\xofjvbf\ssfsb.exe start

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
DE 162.19.139.184:2222 tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 52.152.110.14:443 tcp
US 20.44.10.122:443 tcp
US 52.152.110.14:443 tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
NL 8.238.179.126:80 tcp
NL 8.238.179.126:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 131.253.33.203:80 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
NL 109.205.214.18:443 tcp
US 52.152.110.14:443 tcp
NL 109.205.214.18:443 tcp
NL 109.205.214.18:443 tcp

Files

memory/2976-134-0x00000000006C0000-0x00000000006C9000-memory.dmp

memory/2976-135-0x0000000000400000-0x0000000000462000-memory.dmp

C:\ProgramData\xofjvbf\ssfsb.exe

MD5 84499558c48c4fdebac20cab68253aa7
SHA1 d4518c621d32ebc483a8f0761cf6ed0fe3c7b8ce
SHA256 ca958072c2483f5cfab83972b3e5a25a163eed2d0d6df7d310ddf200a6fec53c
SHA512 00ad7c29108eb787d0283bb6a6c2955ff3b4a64254d03767c1c21e8bf3a1e14149958c9de8f4fd2f6489972b4573b07abc18a3bc2e96cba5fe2d4852d204d65a

C:\ProgramData\xofjvbf\ssfsb.exe

MD5 84499558c48c4fdebac20cab68253aa7
SHA1 d4518c621d32ebc483a8f0761cf6ed0fe3c7b8ce
SHA256 ca958072c2483f5cfab83972b3e5a25a163eed2d0d6df7d310ddf200a6fec53c
SHA512 00ad7c29108eb787d0283bb6a6c2955ff3b4a64254d03767c1c21e8bf3a1e14149958c9de8f4fd2f6489972b4573b07abc18a3bc2e96cba5fe2d4852d204d65a

memory/1392-149-0x0000000000400000-0x0000000000462000-memory.dmp