Malware Analysis Report

2024-11-30 23:32

Sample ID 230820-jtkd2afd51
Target d743b737c248670e3c103bceeff882af.exe
SHA256 1137c048a4a828cd3641bd84d27ea60357ff161c7389913513c7193e5b9fbc40
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

1137c048a4a828cd3641bd84d27ea60357ff161c7389913513c7193e5b9fbc40

Threat Level: Known bad

The file d743b737c248670e3c103bceeff882af.exe was found to be: Known bad.

Malicious Activity Summary

systembc trojan

SystemBC

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-08-20 07:57

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-20 07:57

Reported

2023-08-20 08:00

Platform

win7-20230712-en

Max time kernel

122s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe"

Signatures

SystemBC

trojan systembc

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2156 set thread context of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 2156 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe

"C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"

Network

N/A

Files

memory/2156-54-0x0000000073C90000-0x000000007437E000-memory.dmp

memory/2156-55-0x0000000000A70000-0x0000000000AB4000-memory.dmp

memory/2156-56-0x0000000004680000-0x00000000046C0000-memory.dmp

memory/2156-57-0x0000000001F40000-0x0000000001F82000-memory.dmp

memory/2156-58-0x0000000001FD0000-0x0000000001FEA000-memory.dmp

memory/2156-59-0x0000000000A50000-0x0000000000A56000-memory.dmp

memory/2584-60-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2584-62-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2584-64-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2584-66-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2584-68-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2584-70-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2156-72-0x0000000073C90000-0x000000007437E000-memory.dmp

memory/2584-73-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2156-76-0x0000000073C90000-0x000000007437E000-memory.dmp

memory/2584-75-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2584-78-0x0000000000400000-0x0000000000407000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-20 07:57

Reported

2023-08-20 08:00

Platform

win10v2004-20230703-en

Max time kernel

127s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe"

Signatures

SystemBC

trojan systembc

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3780 set thread context of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
PID 3780 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe

"C:\Users\Admin\AppData\Local\Temp\d743b737c248670e3c103bceeff882af.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 0.77.109.52.in-addr.arpa udp
US 8.8.8.8:53 7.173.189.20.in-addr.arpa udp

Files

memory/3780-133-0x0000000000D80000-0x0000000000DC4000-memory.dmp

memory/3780-134-0x0000000074D70000-0x0000000075520000-memory.dmp

memory/3780-135-0x0000000005050000-0x00000000055F4000-memory.dmp

memory/3780-136-0x0000000004B40000-0x0000000004BD2000-memory.dmp

memory/3780-137-0x0000000004D90000-0x0000000004DA0000-memory.dmp

memory/3780-138-0x0000000004AD0000-0x0000000004ADA000-memory.dmp

memory/3780-139-0x0000000004DA0000-0x0000000004E3C000-memory.dmp

memory/3780-140-0x0000000004D90000-0x0000000004DA0000-memory.dmp

memory/3780-141-0x0000000074D70000-0x0000000075520000-memory.dmp

memory/3780-142-0x0000000004D90000-0x0000000004DA0000-memory.dmp

memory/3780-143-0x0000000004D90000-0x0000000004DA0000-memory.dmp

memory/2164-144-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2164-147-0x0000000000400000-0x0000000000407000-memory.dmp

memory/2164-149-0x0000000000400000-0x0000000000407000-memory.dmp

memory/3780-150-0x0000000074D70000-0x0000000075520000-memory.dmp