Malware Analysis Report

2025-06-15 21:58

Sample ID 221110-hm3flaheaj
Target 684b62ef735f504178ef6455be50b2a6.exe
SHA256 ffe11c5c82b3e725526bf00b707e52cc713600436c5382868b46b4e4a96ba344
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

ffe11c5c82b3e725526bf00b707e52cc713600436c5382868b46b4e4a96ba344

Threat Level: Known bad

The file 684b62ef735f504178ef6455be50b2a6.exe was found to be: Known bad.

Malicious Activity Summary

systembc trojan

Systembc family

SystemBC

Executes dropped EXE

Drops file in Windows directory

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-11-10 06:52

Signatures

Systembc family

systembc

Analysis: behavioral1

Detonation Overview

Submitted

2022-11-10 06:52

Reported

2022-11-10 06:54

Platform

win7-20220812-en

Max time kernel

143s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\jtnctk\fsuteo.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Tasks\fsuteo.job C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe N/A
File created C:\Windows\Tasks\fsuteo.job C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1940 wrote to memory of 1264 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\jtnctk\fsuteo.exe
PID 1940 wrote to memory of 1264 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\jtnctk\fsuteo.exe
PID 1940 wrote to memory of 1264 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\jtnctk\fsuteo.exe
PID 1940 wrote to memory of 1264 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\jtnctk\fsuteo.exe

Processes

C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe

"C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {E795C970-2D52-40CB-9568-981640EA5A58} S-1-5-18:NT AUTHORITY\System:Service:

C:\ProgramData\jtnctk\fsuteo.exe

C:\ProgramData\jtnctk\fsuteo.exe start

Network

Country Destination Domain Proto
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp

Files

memory/1896-54-0x0000000076181000-0x0000000076183000-memory.dmp

C:\ProgramData\jtnctk\fsuteo.exe

MD5 684b62ef735f504178ef6455be50b2a6
SHA1 3ee91e1162e2925f896250545269f297bed06814
SHA256 ffe11c5c82b3e725526bf00b707e52cc713600436c5382868b46b4e4a96ba344
SHA512 3972bca78223e878e244ba191b86ffb993a69ef818613539b6d91d435436889b4e5d95260943d25cbf94250fa26abeff8870f6ca70f5558ec37e890a257f7c9c

C:\ProgramData\jtnctk\fsuteo.exe

MD5 684b62ef735f504178ef6455be50b2a6
SHA1 3ee91e1162e2925f896250545269f297bed06814
SHA256 ffe11c5c82b3e725526bf00b707e52cc713600436c5382868b46b4e4a96ba344
SHA512 3972bca78223e878e244ba191b86ffb993a69ef818613539b6d91d435436889b4e5d95260943d25cbf94250fa26abeff8870f6ca70f5558ec37e890a257f7c9c

memory/1264-56-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-11-10 06:52

Reported

2022-11-10 06:54

Platform

win10v2004-20220812-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\ewegie\mvfoqp.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Tasks\mvfoqp.job C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe N/A
File created C:\Windows\Tasks\mvfoqp.job C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe

"C:\Users\Admin\AppData\Local\Temp\684b62ef735f504178ef6455be50b2a6.exe"

C:\ProgramData\ewegie\mvfoqp.exe

C:\ProgramData\ewegie\mvfoqp.exe start

Network

Country Destination Domain Proto
US 67.27.154.126:80 tcp
US 67.27.154.126:80 tcp
RU 45.182.189.231:443 tcp
US 20.189.173.15:443 tcp
RU 45.182.189.231:443 tcp
US 67.27.154.126:80 tcp
US 67.27.154.126:80 tcp
US 67.27.154.126:80 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp

Files

C:\ProgramData\ewegie\mvfoqp.exe

MD5 684b62ef735f504178ef6455be50b2a6
SHA1 3ee91e1162e2925f896250545269f297bed06814
SHA256 ffe11c5c82b3e725526bf00b707e52cc713600436c5382868b46b4e4a96ba344
SHA512 3972bca78223e878e244ba191b86ffb993a69ef818613539b6d91d435436889b4e5d95260943d25cbf94250fa26abeff8870f6ca70f5558ec37e890a257f7c9c

C:\ProgramData\ewegie\mvfoqp.exe

MD5 684b62ef735f504178ef6455be50b2a6
SHA1 3ee91e1162e2925f896250545269f297bed06814
SHA256 ffe11c5c82b3e725526bf00b707e52cc713600436c5382868b46b4e4a96ba344
SHA512 3972bca78223e878e244ba191b86ffb993a69ef818613539b6d91d435436889b4e5d95260943d25cbf94250fa26abeff8870f6ca70f5558ec37e890a257f7c9c