Malware Analysis Report

2025-04-03 09:22

Sample ID 250307-fkj55avny5
Target systembc_21660286308.zip
SHA256 30e6ba1aa37273355fa7450df0ef28200209345eb54593e3cbf32847f719cc77
Tags
systembc discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

30e6ba1aa37273355fa7450df0ef28200209345eb54593e3cbf32847f719cc77

Threat Level: Known bad

The file systembc_21660286308.zip was found to be: Known bad.

Malicious Activity Summary

systembc discovery

Systembc family

Drops file in Windows directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-03-07 04:55

Signatures

Systembc family

systembc

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-07 04:55

Reported

2025-03-07 05:04

Platform

win7-20240903-en

Max time kernel

441s

Max time network

441s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe

"C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {B2935C73-754F-43C1-B779-113511AC6F3D} S-1-5-18:NT AUTHORITY\System:Service:

C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe

C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe start

Network

Country Destination Domain Proto
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2025-03-07 04:55

Reported

2025-03-07 05:04

Platform

win10v2004-20250217-en

Max time kernel

441s

Max time network

445s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe"

Signatures

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\wow64.job C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe N/A
File opened for modification C:\Windows\Tasks\wow64.job C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe

"C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe"

C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe

C:\Users\Admin\AppData\Local\Temp\1aef94e54c1af9a8d0c4fa4cbdc602c025a2b10a097e87184ceb89e124d26e6a.exe start

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
US 150.171.27.10:443 g.bing.com tcp
US 150.171.27.10:443 g.bing.com tcp
US 150.171.27.10:443 g.bing.com tcp
US 150.171.27.10:443 g.bing.com tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp
DE 88.198.147.80:4174 tcp
DE 78.47.64.46:4174 tcp

Files

N/A