Malware Analysis Report

2025-01-03 05:23

Sample ID 230926-rcbdssbc24
Target 40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef
SHA256 40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef
Tags
bitrat trojan
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 Overview

score
10/10

SHA256

40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef

Threat Level: Known bad

The file 40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef was found to be: Known bad.

Malicious Activity Summary

bitrat trojan

BitRAT

Executes dropped EXE

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-26 14:02

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-26 14:02

Reported

2023-09-26 14:05

Platform

win10-20230915-en

Max time kernel

147s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe"

Signatures

BitRAT

trojan bitrat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4372 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4372 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4372 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4372 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4372 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4372 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4372 wrote to memory of 256 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4372 wrote to memory of 256 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4372 wrote to memory of 256 N/A C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe C:\Windows\SysWOW64\cmd.exe
PID 4824 wrote to memory of 856 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 4824 wrote to memory of 856 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 4824 wrote to memory of 856 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 3744 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 308 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 308 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 308 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 308 wrote to memory of 220 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 308 wrote to memory of 220 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 308 wrote to memory of 220 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 308 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 308 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 308 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Roaming\svchost\svchost.exe C:\Windows\SysWOW64\cmd.exe
PID 220 wrote to memory of 2252 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 220 wrote to memory of 2252 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 220 wrote to memory of 2252 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe

"C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"

C:\Windows\SysWOW64\cmd.exe

"cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef.exe" "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"

C:\Windows\SysWOW64\cmd.exe

"cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2976 -s 572

C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

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

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

C:\Windows\SysWOW64\cmd.exe

"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"

C:\Windows\SysWOW64\cmd.exe

"cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f

C:\Windows\SysWOW64\cmd.exe

"cmd" /c copy "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe" "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 552

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f

C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 164.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 177.25.221.88.in-addr.arpa udp
US 8.8.8.8:53 72.239.69.13.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp

Files

memory/4372-0-0x00000000737C0000-0x0000000073EAE000-memory.dmp

memory/4372-1-0x0000000000030000-0x00000000007F6000-memory.dmp

memory/4372-2-0x0000000005150000-0x0000000005160000-memory.dmp

memory/4372-3-0x00000000737C0000-0x0000000073EAE000-memory.dmp

memory/4372-4-0x0000000005150000-0x0000000005160000-memory.dmp

memory/4372-5-0x0000000006B30000-0x00000000072BA000-memory.dmp

memory/2976-7-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/4372-11-0x00000000737C0000-0x0000000073EAE000-memory.dmp

memory/2976-13-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/2976-19-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/2976-20-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/2976-21-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/2976-22-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/2976-23-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/2976-24-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/2976-25-0x0000000000730000-0x0000000000AFE000-memory.dmp

memory/2976-26-0x0000000000730000-0x0000000000AFE000-memory.dmp

C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

MD5 b8d03a02e654dfc840f21297b8dc99b2
SHA1 615aced62a15e9a1733bfb2c390ba83f024bbbd7
SHA256 40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef
SHA512 5f9b459df94dac7dc17f90a8dc53d968c3c0e2fc5c41b107ece1683621ef887d8f01abeec04ec0d9beb87fd11c54f39d71c7ec5c2502ec1db68ffacd018c4194

C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

MD5 b8d03a02e654dfc840f21297b8dc99b2
SHA1 615aced62a15e9a1733bfb2c390ba83f024bbbd7
SHA256 40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef
SHA512 5f9b459df94dac7dc17f90a8dc53d968c3c0e2fc5c41b107ece1683621ef887d8f01abeec04ec0d9beb87fd11c54f39d71c7ec5c2502ec1db68ffacd018c4194

memory/308-29-0x00000000727E0000-0x0000000072ECE000-memory.dmp

memory/308-30-0x0000000005B00000-0x0000000005C00000-memory.dmp

memory/308-31-0x00000000727E0000-0x0000000072ECE000-memory.dmp

memory/308-32-0x0000000005B00000-0x0000000005C00000-memory.dmp

memory/3744-39-0x00000000005C0000-0x000000000098E000-memory.dmp

memory/3744-43-0x00000000005C0000-0x000000000098E000-memory.dmp

memory/3744-44-0x00000000005C0000-0x000000000098E000-memory.dmp

memory/308-46-0x00000000727E0000-0x0000000072ECE000-memory.dmp

memory/3744-45-0x00000000005C0000-0x000000000098E000-memory.dmp

memory/3744-47-0x00000000005C0000-0x000000000098E000-memory.dmp

memory/3744-48-0x00000000005C0000-0x000000000098E000-memory.dmp

memory/3744-49-0x00000000005C0000-0x000000000098E000-memory.dmp

memory/3744-51-0x00000000005C0000-0x000000000098E000-memory.dmp

memory/3744-50-0x00000000005C0000-0x000000000098E000-memory.dmp

C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

MD5 b8d03a02e654dfc840f21297b8dc99b2
SHA1 615aced62a15e9a1733bfb2c390ba83f024bbbd7
SHA256 40f3e277da7a04b58913ba390827cfd51b318f40768c58f81361b832096ce1ef
SHA512 5f9b459df94dac7dc17f90a8dc53d968c3c0e2fc5c41b107ece1683621ef887d8f01abeec04ec0d9beb87fd11c54f39d71c7ec5c2502ec1db68ffacd018c4194

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\svchost.exe.log

MD5 605f809fab8c19729d39d075f7ffdb53
SHA1 c546f877c9bd53563174a90312a8337fdfc5fdd9
SHA256 6904d540649e76c55f99530b81be17e099184bb4cad415aa9b9b39cc3677f556
SHA512 82cc12c3186ae23884b8d5c104638c8206272c4389ade56b926dfc1d437b03888159b3c790b188b54d277a262e731927e703e680ea642e1417faee27443fd5b3

memory/3200-54-0x00000000727E0000-0x0000000072ECE000-memory.dmp

memory/3200-55-0x0000000005A00000-0x0000000005B00000-memory.dmp