Malware Analysis Report

2025-01-03 05:10

Sample ID 230805-3tmc6sgf41
Target jbit.exe
SHA256 23abe80bf01902aca2c57c6494ef60780187a870d01d964790306a10b3fa23ad
Tags
bitrat trojan upx
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

23abe80bf01902aca2c57c6494ef60780187a870d01d964790306a10b3fa23ad

Threat Level: Known bad

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

Malicious Activity Summary

bitrat trojan upx

BitRAT

Drops startup file

UPX packed file

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-08-05 23:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-05 23:48

Reported

2023-08-05 23:51

Platform

win7-20230712-en

Max time kernel

119s

Max time network

127s

Command Line

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

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\jbit.exe

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3048 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\jbit.exe C:\Windows\SysWOW64\WerFault.exe
PID 3048 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\jbit.exe C:\Windows\SysWOW64\WerFault.exe
PID 3048 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\jbit.exe C:\Windows\SysWOW64\WerFault.exe
PID 3048 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\jbit.exe C:\Windows\SysWOW64\WerFault.exe

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3048 -s 1116

Network

Country Destination Domain Proto
US 8.8.8.8:53 winyardbuilding.nz udp
AU 114.142.162.97:443 winyardbuilding.nz tcp

Files

memory/3048-54-0x0000000073E00000-0x00000000744EE000-memory.dmp

memory/3048-55-0x0000000000BD0000-0x0000000005CE8000-memory.dmp

memory/3048-56-0x0000000000A00000-0x0000000000A40000-memory.dmp

memory/3048-57-0x0000000073E00000-0x00000000744EE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-05 23:48

Reported

2023-08-05 23:51

Platform

win10v2004-20230703-en

Max time kernel

143s

Max time network

159s

Command Line

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

Signatures

BitRAT

trojan bitrat

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Skktdrerof.vbs C:\Users\Admin\AppData\Local\Temp\jbit.exe N/A

UPX packed file

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3968 set thread context of 3044 N/A C:\Users\Admin\AppData\Local\Temp\jbit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\jbit.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Processes

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 winyardbuilding.nz udp
AU 114.142.162.97:443 winyardbuilding.nz tcp
US 8.8.8.8:53 97.162.142.114.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
US 8.8.8.8:53 backu4734.duckdns.org udp
DE 167.235.75.225:7904 backu4734.duckdns.org tcp
DE 167.235.75.225:7904 backu4734.duckdns.org tcp
DE 167.235.75.225:7904 backu4734.duckdns.org tcp
DE 167.235.75.225:7904 backu4734.duckdns.org tcp
US 8.8.8.8:53 10.179.89.13.in-addr.arpa udp
DE 167.235.75.225:7904 backu4734.duckdns.org tcp
US 8.8.8.8:53 backu4734.duckdns.org udp

Files

memory/3968-133-0x0000000074770000-0x0000000074F20000-memory.dmp

memory/3968-134-0x00000000004E0000-0x00000000055F8000-memory.dmp

memory/3968-135-0x000000000A5F0000-0x000000000AB94000-memory.dmp

memory/3968-136-0x000000000A040000-0x000000000A0D2000-memory.dmp

memory/3968-137-0x0000000009F80000-0x0000000009F90000-memory.dmp

memory/3968-138-0x0000000009FF0000-0x0000000009FFA000-memory.dmp

memory/3968-139-0x0000000074770000-0x0000000074F20000-memory.dmp

memory/3968-140-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-141-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-143-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-145-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-147-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-149-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-151-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-153-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-155-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-157-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-159-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-161-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-163-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-165-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-167-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-169-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-172-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-171-0x0000000009F80000-0x0000000009F90000-memory.dmp

memory/3968-174-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-176-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-178-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-180-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-182-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-184-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-186-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-188-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-190-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-192-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-194-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-196-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-198-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-200-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-202-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-204-0x000000000CAF0000-0x000000000CD08000-memory.dmp

memory/3968-1217-0x000000000BE30000-0x000000000BE31000-memory.dmp

memory/3968-1224-0x0000000074770000-0x0000000074F20000-memory.dmp

memory/3044-1226-0x0000000000400000-0x00000000007E4000-memory.dmp

memory/3044-1228-0x00000000745C0000-0x00000000745F9000-memory.dmp

memory/3044-1236-0x0000000074960000-0x0000000074999000-memory.dmp

memory/3044-1239-0x0000000074960000-0x0000000074999000-memory.dmp

memory/3044-1240-0x0000000000400000-0x00000000007E4000-memory.dmp

memory/3044-1243-0x0000000074960000-0x0000000074999000-memory.dmp

memory/3044-1246-0x0000000074960000-0x0000000074999000-memory.dmp

memory/3044-1249-0x0000000074960000-0x0000000074999000-memory.dmp