Malware Analysis Report

2025-06-15 21:58

Sample ID 221108-hp3jdacgc3
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: 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

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 behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-11-08 06:55

Signatures

Systembc family

systembc

Analysis: behavioral1

Detonation Overview

Submitted

2022-11-08 06:55

Reported

2022-11-08 06:58

Platform

win7-20220812-en

Max time kernel

144s

Max time network

152s

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\tktib\qhsnatg.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\qhsnatg.job C:\Users\Admin\AppData\Local\Temp\597b728407b2c1a91d5a49d0bc9a9c55.exe N/A
File opened for modification C:\Windows\Tasks\qhsnatg.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 1940 wrote to memory of 1612 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\tktib\qhsnatg.exe
PID 1940 wrote to memory of 1612 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\tktib\qhsnatg.exe
PID 1940 wrote to memory of 1612 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\tktib\qhsnatg.exe
PID 1940 wrote to memory of 1612 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\tktib\qhsnatg.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 {3F5A4D99-E515-4DB3-8511-A21E5986C5B4} S-1-5-18:NT AUTHORITY\System:Service:

C:\ProgramData\tktib\qhsnatg.exe

C:\ProgramData\tktib\qhsnatg.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

Files

memory/2032-54-0x0000000076261000-0x0000000076263000-memory.dmp

C:\ProgramData\tktib\qhsnatg.exe

MD5 597b728407b2c1a91d5a49d0bc9a9c55
SHA1 a3589bc875751b10363ba56c559948781429a57a
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
SHA512 964c7e5e90c96e2fd286cfee1f8d115abbdccf5cc8068a075fba2f964a1594b78dd69daa42ba8ad2fac58a99d6f9b3ee76f2d1d6a9d1ee744a5330cb9d978c43

memory/1612-56-0x0000000000000000-mapping.dmp

C:\ProgramData\tktib\qhsnatg.exe

MD5 597b728407b2c1a91d5a49d0bc9a9c55
SHA1 a3589bc875751b10363ba56c559948781429a57a
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
SHA512 964c7e5e90c96e2fd286cfee1f8d115abbdccf5cc8068a075fba2f964a1594b78dd69daa42ba8ad2fac58a99d6f9b3ee76f2d1d6a9d1ee744a5330cb9d978c43

Analysis: behavioral2

Detonation Overview

Submitted

2022-11-08 06:55

Reported

2022-11-08 06:58

Platform

win10v2004-20220901-en

Max time kernel

142s

Max time network

153s

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\ddgux\tujwevg.exe N/A

Drops file in Windows directory

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

C:\ProgramData\ddgux\tujwevg.exe start

Network

Country Destination Domain Proto
US 8.253.183.120:80 tcp
US 93.184.220.29:80 tcp
RU 45.182.189.231:443 tcp
US 20.42.73.25:443 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
US 8.253.183.120:80 tcp
US 8.253.183.120:80 tcp
US 8.253.183.120:80 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\ddgux\tujwevg.exe

MD5 597b728407b2c1a91d5a49d0bc9a9c55
SHA1 a3589bc875751b10363ba56c559948781429a57a
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
SHA512 964c7e5e90c96e2fd286cfee1f8d115abbdccf5cc8068a075fba2f964a1594b78dd69daa42ba8ad2fac58a99d6f9b3ee76f2d1d6a9d1ee744a5330cb9d978c43

C:\ProgramData\ddgux\tujwevg.exe

MD5 597b728407b2c1a91d5a49d0bc9a9c55
SHA1 a3589bc875751b10363ba56c559948781429a57a
SHA256 4eceaf21c15e9755c7ea6dae9613bebe2462f4e85322a8e7d521e277e8bb1f13
SHA512 964c7e5e90c96e2fd286cfee1f8d115abbdccf5cc8068a075fba2f964a1594b78dd69daa42ba8ad2fac58a99d6f9b3ee76f2d1d6a9d1ee744a5330cb9d978c43