Malware Analysis Report

2025-06-15 21:58

Sample ID 221108-hpsdeaefhl
Target 597b728407b2c1a91d5a49d0bc9a9c55.exe
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
Tags
systembc trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13

Threat Level: Known bad

The file 597b728407b2c1a91d5a49d0bc9a9c55.exe was found to be: Known bad.

Malicious Activity Summary

systembc trojan

Systembc family

SystemBC

Executes dropped EXE

Drops file in Windows directory

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-11-08 06:55

Signatures

Systembc family

systembc

Analysis: behavioral2

Detonation Overview

Submitted

2022-11-08 06:55

Reported

2022-11-08 06:58

Platform

win10v2004-20220812-en

Max time kernel

169s

Max time network

178s

Command Line

"C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\axlvjwh\vrtguei.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\vrtguei.job C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe N/A
File opened for modification C:\Windows\Tasks\vrtguei.job C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe

"C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe"

C:\ProgramData\axlvjwh\vrtguei.exe

C:\ProgramData\axlvjwh\vrtguei.exe start

Network

Country Destination Domain Proto
US 209.197.3.8:80 tcp
IE 20.223.24.244:443 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 104.80.225.205:443 tcp
FR 40.79.150.121:443 tcp
US 209.197.3.8:80 tcp
US 8.238.21.254:80 tcp
US 209.197.3.8:80 tcp
RU 45.182.189.231:443 tcp
US 209.197.3.8:80 tcp
RU 45.182.189.231:443 tcp
RU 45.182.189.231:443 tcp
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 8.238.20.126:80 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
BE 8.238.110.126:80 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

Files

C:\ProgramData\axlvjwh\vrtguei.exe

MD5 597b728407b2c1a91d5a49d0bc9a9c55
SHA1 a3589bc875751b10363ba56c559948781429a57a
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
SHA512 964c7e5e90c96e2fd286cfee1f8d115abbdccf5cc8068a075fba2f964a1594b78dd69daa42ba8ad2fac58a99d6f9b3ee76f2d1d6a9d1ee744a5330cb9d978c43

C:\ProgramData\axlvjwh\vrtguei.exe

MD5 597b728407b2c1a91d5a49d0bc9a9c55
SHA1 a3589bc875751b10363ba56c559948781429a57a
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
SHA512 964c7e5e90c96e2fd286cfee1f8d115abbdccf5cc8068a075fba2f964a1594b78dd69daa42ba8ad2fac58a99d6f9b3ee76f2d1d6a9d1ee744a5330cb9d978c43

Analysis: behavioral1

Detonation Overview

Submitted

2022-11-08 06:55

Reported

2022-11-08 06:57

Platform

win7-20220812-en

Max time kernel

146s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\sxnjs\njfdvsf.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\njfdvsf.job C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe N/A
File opened for modification C:\Windows\Tasks\njfdvsf.job C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1860 wrote to memory of 1112 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\sxnjs\njfdvsf.exe
PID 1860 wrote to memory of 1112 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\sxnjs\njfdvsf.exe
PID 1860 wrote to memory of 1112 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\sxnjs\njfdvsf.exe
PID 1860 wrote to memory of 1112 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\sxnjs\njfdvsf.exe

Processes

C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe

"C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {E2DF8F9A-C242-48A2-85E1-1B50737A6552} S-1-5-18:NT AUTHORITY\System:Service:

C:\ProgramData\sxnjs\njfdvsf.exe

C:\ProgramData\sxnjs\njfdvsf.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/1928-54-0x00000000762B1000-0x00000000762B3000-memory.dmp

C:\ProgramData\sxnjs\njfdvsf.exe

MD5 597b728407b2c1a91d5a49d0bc9a9c55
SHA1 a3589bc875751b10363ba56c559948781429a57a
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
SHA512 964c7e5e90c96e2fd286cfee1f8d115abbdccf5cc8068a075fba2f964a1594b78dd69daa42ba8ad2fac58a99d6f9b3ee76f2d1d6a9d1ee744a5330cb9d978c43

memory/1112-56-0x0000000000000000-mapping.dmp

C:\ProgramData\sxnjs\njfdvsf.exe

MD5 597b728407b2c1a91d5a49d0bc9a9c55
SHA1 a3589bc875751b10363ba56c559948781429a57a
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
SHA512 964c7e5e90c96e2fd286cfee1f8d115abbdccf5cc8068a075fba2f964a1594b78dd69daa42ba8ad2fac58a99d6f9b3ee76f2d1d6a9d1ee744a5330cb9d978c43