Malware Analysis Report

2025-08-05 14:32

Sample ID 240203-rlpb1sbda2
Target 8c8a12ad071e2916f1601a12879c14dd
SHA256 f71318cf8ed1b720cae18bbbc39486327f4d982d6ff02ec0b571ac2b6945c195
Tags
upx modiloader evasion 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

f71318cf8ed1b720cae18bbbc39486327f4d982d6ff02ec0b571ac2b6945c195

Threat Level: Known bad

The file 8c8a12ad071e2916f1601a12879c14dd was found to be: Known bad.

Malicious Activity Summary

upx modiloader evasion persistence trojan

ModiLoader, DBatLoader

UAC bypass

ModiLoader Second Stage

UPX packed file

Deletes itself

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

Uses Volume Shadow Copy service COM API

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

System policy modification

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-03 14:17

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-03 14:17

Reported

2024-02-03 14:19

Platform

win7-20231215-en

Max time kernel

144s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

ModiLoader Second Stage

Description Indicator Process Target
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Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe" C:\Windows\mstwain32.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\mstwain32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\cmsetac.dll C:\Windows\mstwain32.exe N/A
File created C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A
File created C:\Windows\ntdtcstp.dll C:\Windows\mstwain32.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\mstwain32.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\mstwain32.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe

"C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 hurt23.mine.nu udp

Files

memory/1752-0-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1752-1-0x00000000001F0000-0x00000000001F1000-memory.dmp

memory/1752-2-0x00000000024D0000-0x00000000024D1000-memory.dmp

C:\Windows\mstwain32.exe

MD5 8c8a12ad071e2916f1601a12879c14dd
SHA1 33c46d051870a085f7731626fc327975134a1559
SHA256 f71318cf8ed1b720cae18bbbc39486327f4d982d6ff02ec0b571ac2b6945c195
SHA512 ef9c89ed4c86d2b899b7785ba1417b3d53053baea0947107e32e92433416b03fa7238ee6bf3b9f35701881143c7868b3e950d0d267e6ef52790ed1f2dfabc055

memory/1752-14-0x0000000003E10000-0x0000000003E62000-memory.dmp

memory/1752-13-0x0000000003E10000-0x0000000003E20000-memory.dmp

memory/2976-15-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1752-12-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-21-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2976-23-0x0000000074A40000-0x0000000074A54000-memory.dmp

memory/2976-22-0x0000000076330000-0x0000000076420000-memory.dmp

memory/2976-19-0x0000000001E20000-0x0000000001E2E000-memory.dmp

memory/2976-24-0x0000000000510000-0x0000000000511000-memory.dmp

memory/2976-25-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1752-26-0x0000000003E10000-0x0000000003E62000-memory.dmp

memory/2976-27-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-29-0x0000000076330000-0x0000000076420000-memory.dmp

memory/2976-28-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-30-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-31-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-32-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-34-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-35-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-36-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-37-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-38-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-39-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-40-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-41-0x0000000000400000-0x0000000000452000-memory.dmp

memory/2976-42-0x0000000000400000-0x0000000000452000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-03 14:17

Reported

2024-02-03 14:19

Platform

win10v2004-20231222-en

Max time kernel

142s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

ModiLoader Second Stage

Description Indicator Process Target
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Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe" C:\Windows\mstwain32.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\mstwain32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A
File created C:\Windows\ntdtcstp.dll C:\Windows\mstwain32.exe N/A
File created C:\Windows\cmsetac.dll C:\Windows\mstwain32.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\mstwain32.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\mstwain32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe

"C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 hurt23.mine.nu udp
US 8.8.8.8:53 210.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 hurt23.mine.nu udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 hurt23.mine.nu udp
US 8.8.8.8:53 hurt23.mine.nu udp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 hurt23.mine.nu udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 hurt23.mine.nu udp
US 8.8.8.8:53 hurt23.mine.nu udp
US 8.8.8.8:53 hurt23.mine.nu udp

Files

memory/4488-0-0x0000000000400000-0x0000000000452000-memory.dmp

memory/4488-1-0x00000000005A0000-0x00000000005A1000-memory.dmp

C:\Windows\mstwain32.exe

MD5 8c8a12ad071e2916f1601a12879c14dd
SHA1 33c46d051870a085f7731626fc327975134a1559
SHA256 f71318cf8ed1b720cae18bbbc39486327f4d982d6ff02ec0b571ac2b6945c195
SHA512 ef9c89ed4c86d2b899b7785ba1417b3d53053baea0947107e32e92433416b03fa7238ee6bf3b9f35701881143c7868b3e950d0d267e6ef52790ed1f2dfabc055

memory/4488-11-0x0000000000400000-0x0000000000452000-memory.dmp

C:\Windows\ntdtcstp.dll

MD5 67587e25a971a141628d7f07bd40ffa0
SHA1 76fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256 e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA512 6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

memory/1692-20-0x0000000000730000-0x0000000000731000-memory.dmp

C:\Windows\cmsetac.dll

MD5 c200deb575126b97609d020897aaa5ac
SHA1 9d086f32f5e6a134c5a9dffe35d29c2a3261a42f
SHA256 a4a0c6545cd3990fcfb973ff5b76517520edf142d9f09fbcb118c92574ed2762
SHA512 c8040e3997967d4c25401b53b9fb97545709829876031cdd985c46cf0cccb467a546c8563441b2fbe2e03de0c9829732a345eb629e2eb2eecb87026794e4b7d7

memory/1692-24-0x00000000009C0000-0x00000000009CE000-memory.dmp

memory/1692-27-0x00000000009B0000-0x00000000009B1000-memory.dmp

memory/1692-28-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-29-0x0000000000790000-0x0000000000798000-memory.dmp

memory/1692-30-0x00000000009C0000-0x00000000009CE000-memory.dmp

memory/1692-31-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-32-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-35-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-38-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-41-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-44-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-47-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-50-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-53-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-56-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-59-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-62-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-65-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1692-68-0x0000000000400000-0x0000000000452000-memory.dmp