Malware Analysis Report

2025-03-14 22:30

Sample ID 240304-rd8qpadb33
Target b251001041fe1c5c47ee953942dcf662
SHA256 97a612d3c4a095e20f2bcea30a62793ca6fe4397b8676aceb8efbcbb13e717e7
Tags
modiloader persistence 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

97a612d3c4a095e20f2bcea30a62793ca6fe4397b8676aceb8efbcbb13e717e7

Threat Level: Known bad

The file b251001041fe1c5c47ee953942dcf662 was found to be: Known bad.

Malicious Activity Summary

modiloader persistence trojan

ModiLoader, DBatLoader

Modifies WinLogon for persistence

ModiLoader Second Stage

Sets DLL path for service in the registry

Deletes itself

Executes dropped EXE

Loads dropped DLL

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-04 14:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 14:05

Reported

2024-03-04 14:08

Platform

win7-20240221-en

Max time kernel

140s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\System32\\userinit.exe,\"C:\\Users\\Admin\\Favorites\\netservice.exe\"un userinit.exe" C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe N/A

ModiLoader Second Stage

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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Sets DLL path for service in the registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\netrt\Parameters\ServiceDll = "C:\\Windows\\System32\\sysn.dll" C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe N/A

Deletes itself

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Favorites\netservice.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\sysn.dll C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe N/A
File opened for modification C:\Windows\SysWOW64\sysn.dll C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2240 wrote to memory of 2156 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Users\Admin\Favorites\netservice.exe
PID 2240 wrote to memory of 2156 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Users\Admin\Favorites\netservice.exe
PID 2240 wrote to memory of 2156 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Users\Admin\Favorites\netservice.exe
PID 2240 wrote to memory of 2156 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Users\Admin\Favorites\netservice.exe
PID 2240 wrote to memory of 2532 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2532 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2532 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2532 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe

"C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe"

C:\Users\Admin\Favorites\netservice.exe

C:\Users\Admin\Favorites\netservice.exe

C:\Windows\SysWOW64\cmd.exe

cmd /c del "C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k network

C:\Windows\SysWOW64\cmd.exe

cmd /c del "C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 cgq.8800.org udp
IT 93.46.8.90:8000 cgq.8800.org tcp
N/A 10.127.1.2:80 tcp
IT 93.46.8.90:8000 cgq.8800.org tcp
IT 93.46.8.90:8000 cgq.8800.org tcp
N/A 10.127.1.2:80 tcp
US 8.8.8.8:53 cgq.8800.org udp
DE 46.82.174.69:8000 cgq.8800.org tcp
DE 46.82.174.69:8000 cgq.8800.org tcp
N/A 10.127.1.2:80 tcp
DE 46.82.174.69:8000 cgq.8800.org tcp

Files

\Users\Admin\Favorites\netservice.exe

MD5 b251001041fe1c5c47ee953942dcf662
SHA1 223ac182c32c524768d18152f86fe47dc0c1e4d7
SHA256 97a612d3c4a095e20f2bcea30a62793ca6fe4397b8676aceb8efbcbb13e717e7
SHA512 a9a8507e8a1ce1866b8e65a6f8e91b870d9d09d14b5b820513e8e66adebeff4363138d2779eb465fe3ccc19917270794efd33e6db90f71cb0c705d2a2b625e0a

memory/2156-10-0x0000000013140000-0x00000000131BA000-memory.dmp

\??\c:\windows\SysWOW64\sysn.dll

MD5 56fbe3205570e6fe6c49dbd3ab98677f
SHA1 c7db87b892af2e003fb8ab99221e7737c3d0cf51
SHA256 78fd482e735a236883777a514035bb17169bcab8cece4b354d742cbbcaded9c0
SHA512 6c02da097c5decc4587003f943f20388e0ee368b0c646cf2211cf30224ff35086f763fa372386ed1d4c09a598bae0efcdc194f44affcbb92afc59d0dcbb38d7e

memory/2240-16-0x0000000013140000-0x00000000131BA000-memory.dmp

memory/2584-15-0x0000000000600000-0x0000000000668000-memory.dmp

\Windows\SysWOW64\sysn.dll

MD5 51ce9d0ba81719576e8db8d9a692322a
SHA1 a7dbaa43df003658beb71560a0be63494ba29777
SHA256 0927ba82f435fcd4f15256092f5f4e730ef713e01c904dbc9b36e4ef6ec92422
SHA512 4bd15ba0b19a85f6dac1014704648d67e55176572bfa71c12d91e7771b68a53ef2e8b4a4c662ed86d7fc900891ecce3125d5fd15dd3cc2f9786d570579228cfc

memory/2584-17-0x0000000000600000-0x0000000000668000-memory.dmp

memory/2584-19-0x0000000000600000-0x0000000000668000-memory.dmp

memory/2584-21-0x0000000000600000-0x0000000000668000-memory.dmp

memory/2584-23-0x0000000000600000-0x0000000000668000-memory.dmp

memory/2584-25-0x0000000000600000-0x0000000000668000-memory.dmp

memory/2584-27-0x0000000000600000-0x0000000000668000-memory.dmp

memory/2584-29-0x0000000000600000-0x0000000000668000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 14:05

Reported

2024-03-04 14:08

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\System32\\userinit.exe,\"C:\\Users\\Admin\\Favorites\\netservice.exe\"un userinit.exe" C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe N/A

ModiLoader Second Stage

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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Sets DLL path for service in the registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\netrt\Parameters\ServiceDll = "C:\\Windows\\System32\\sysn.dll" C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Favorites\netservice.exe N/A

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\sysn.dll C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe N/A
File opened for modification C:\Windows\SysWOW64\sysn.dll C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe

"C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe"

C:\Users\Admin\Favorites\netservice.exe

C:\Users\Admin\Favorites\netservice.exe

C:\Windows\SysWOW64\cmd.exe

cmd /c del "C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k network

C:\Windows\SysWOW64\cmd.exe

cmd /c del "C:\Users\Admin\AppData\Local\Temp\b251001041fe1c5c47ee953942dcf662.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 208.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 cgq.8800.org udp
IT 93.46.8.90:8000 cgq.8800.org tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
N/A 10.127.0.112:80 tcp
IT 93.46.8.90:8000 cgq.8800.org tcp
US 8.8.8.8:53 202.178.17.96.in-addr.arpa udp
IT 93.46.8.90:8000 cgq.8800.org tcp
N/A 10.127.0.112:80 tcp
US 8.8.8.8:53 170.191.110.104.in-addr.arpa udp
US 8.8.8.8:53 cgq.8800.org udp
N/A 10.127.0.112:80 tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
N/A 10.127.0.112:80 tcp
US 8.8.8.8:53 cgq.8800.org udp
KR 59.24.3.174:8000 cgq.8800.org tcp
KR 59.24.3.174:8000 cgq.8800.org tcp
N/A 10.127.0.112:80 tcp
KR 59.24.3.174:8000 cgq.8800.org tcp
US 8.8.8.8:53 udp

Files

C:\Users\Admin\Favorites\netservice.exe

MD5 b251001041fe1c5c47ee953942dcf662
SHA1 223ac182c32c524768d18152f86fe47dc0c1e4d7
SHA256 97a612d3c4a095e20f2bcea30a62793ca6fe4397b8676aceb8efbcbb13e717e7
SHA512 a9a8507e8a1ce1866b8e65a6f8e91b870d9d09d14b5b820513e8e66adebeff4363138d2779eb465fe3ccc19917270794efd33e6db90f71cb0c705d2a2b625e0a

memory/2792-8-0x0000000013140000-0x00000000131BA000-memory.dmp

\??\c:\windows\SysWOW64\sysn.dll

MD5 51ce9d0ba81719576e8db8d9a692322a
SHA1 a7dbaa43df003658beb71560a0be63494ba29777
SHA256 0927ba82f435fcd4f15256092f5f4e730ef713e01c904dbc9b36e4ef6ec92422
SHA512 4bd15ba0b19a85f6dac1014704648d67e55176572bfa71c12d91e7771b68a53ef2e8b4a4c662ed86d7fc900891ecce3125d5fd15dd3cc2f9786d570579228cfc

memory/3720-11-0x0000000013140000-0x00000000131BA000-memory.dmp

memory/2484-12-0x0000000000400000-0x0000000000468000-memory.dmp

memory/2484-14-0x0000000000400000-0x0000000000468000-memory.dmp

memory/2484-16-0x0000000000400000-0x0000000000468000-memory.dmp

memory/2484-18-0x0000000000400000-0x0000000000468000-memory.dmp

memory/2484-20-0x0000000000400000-0x0000000000468000-memory.dmp

memory/2484-23-0x0000000000400000-0x0000000000468000-memory.dmp