Malware Analysis Report

2025-06-16 05:48

Sample ID 240325-vez2qadd86
Target de7da11f23c0d9763fdd5c9676edf858
SHA256 a17f3767047a98aa7cd819151c97ec119548ae5379f481fb4500e912ae3375a9
Tags
themida 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

a17f3767047a98aa7cd819151c97ec119548ae5379f481fb4500e912ae3375a9

Threat Level: Known bad

The file de7da11f23c0d9763fdd5c9676edf858 was found to be: Known bad.

Malicious Activity Summary

themida modiloader evasion persistence trojan

UAC bypass

ModiLoader, DBatLoader

ModiLoader Second Stage

Executes dropped EXE

Themida packer

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

System policy modification

Suspicious use of WriteProcessMemory

Uses Volume Shadow Copy service COM API

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-25 16:54

Signatures

Themida packer

themida
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

2024-03-25 16:54

Reported

2024-03-25 16:57

Platform

win7-20240221-en

Max time kernel

142s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\de7da11f23c0d9763fdd5c9676edf858.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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Executes dropped EXE

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

Themida packer

themida
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-1-5-21-778096762-2241304387-192235952-1000\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\de7da11f23c0d9763fdd5c9676edf858.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\de7da11f23c0d9763fdd5c9676edf858.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\de7da11f23c0d9763fdd5c9676edf858.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 behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\de7da11f23c0d9763fdd5c9676edf858.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\de7da11f23c0d9763fdd5c9676edf858.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\de7da11f23c0d9763fdd5c9676edf858.exe

"C:\Users\Admin\AppData\Local\Temp\de7da11f23c0d9763fdd5c9676edf858.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe"

Network

Country Destination Domain Proto
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp
N/A 10.1.1.4:15963 tcp

Files

memory/1780-0-0x0000000000840000-0x0000000000841000-memory.dmp

memory/1780-1-0x00000000009A0000-0x0000000000A89000-memory.dmp

memory/1780-2-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1780-4-0x0000000004350000-0x0000000004351000-memory.dmp

memory/1780-7-0x0000000004480000-0x0000000004481000-memory.dmp

memory/1780-18-0x0000000004360000-0x0000000004361000-memory.dmp

memory/1780-17-0x0000000004370000-0x0000000004371000-memory.dmp

memory/1780-16-0x0000000004430000-0x0000000004431000-memory.dmp

memory/1780-15-0x0000000004490000-0x0000000004491000-memory.dmp

memory/1780-14-0x0000000004340000-0x0000000004341000-memory.dmp

memory/1780-13-0x0000000004380000-0x0000000004381000-memory.dmp

memory/1780-12-0x0000000004400000-0x0000000004401000-memory.dmp

memory/1780-11-0x00000000043E0000-0x00000000043E1000-memory.dmp

memory/1780-10-0x0000000004470000-0x0000000004471000-memory.dmp

memory/1780-9-0x00000000043C0000-0x00000000043C1000-memory.dmp

memory/1780-8-0x00000000043B0000-0x00000000043B1000-memory.dmp

memory/1780-6-0x0000000004390000-0x0000000004391000-memory.dmp

memory/1780-5-0x0000000004300000-0x0000000004301000-memory.dmp

memory/1780-3-0x0000000004330000-0x0000000004331000-memory.dmp

memory/1780-20-0x00000000043D0000-0x00000000043D1000-memory.dmp

memory/1780-19-0x0000000004420000-0x0000000004422000-memory.dmp

memory/1780-21-0x0000000000400000-0x00000000006A9000-memory.dmp

C:\Windows\mstwain32.exe

MD5 de7da11f23c0d9763fdd5c9676edf858
SHA1 1ce0e8ce70c5e9e5d45dc18fd4f938e41e1caf72
SHA256 a17f3767047a98aa7cd819151c97ec119548ae5379f481fb4500e912ae3375a9
SHA512 45257eb0f9aeedb1951fc4ad13c5571df78ae63c1a3183d227c7152bcb4f68f728de69d6dc7a45a541236b016a167be52c4a7df0afc3066843f46d5231fa7638

memory/1420-31-0x0000000000270000-0x0000000000271000-memory.dmp

memory/1780-30-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-32-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-33-0x0000000004330000-0x0000000004331000-memory.dmp

memory/1420-43-0x0000000004480000-0x0000000004481000-memory.dmp

memory/1420-45-0x0000000004400000-0x0000000004401000-memory.dmp

memory/1420-51-0x0000000004360000-0x0000000004361000-memory.dmp

memory/1420-50-0x0000000004440000-0x0000000004441000-memory.dmp

memory/1420-49-0x00000000044A0000-0x00000000044A1000-memory.dmp

memory/1420-48-0x0000000004340000-0x0000000004341000-memory.dmp

memory/1420-47-0x0000000004380000-0x0000000004381000-memory.dmp

memory/1420-46-0x0000000004370000-0x0000000004371000-memory.dmp

memory/1420-44-0x00000000043E0000-0x00000000043E1000-memory.dmp

memory/1420-42-0x00000000043C0000-0x00000000043C1000-memory.dmp

memory/1420-41-0x00000000043B0000-0x00000000043B1000-memory.dmp

memory/1420-40-0x0000000004490000-0x0000000004491000-memory.dmp

memory/1420-38-0x0000000004390000-0x0000000004391000-memory.dmp

memory/1420-37-0x0000000004300000-0x0000000004301000-memory.dmp

memory/1420-34-0x0000000004350000-0x0000000004351000-memory.dmp

memory/1420-59-0x0000000004450000-0x0000000004451000-memory.dmp

memory/1420-58-0x0000000004160000-0x0000000004161000-memory.dmp

memory/1420-57-0x00000000043D0000-0x00000000043D1000-memory.dmp

memory/1420-56-0x0000000004430000-0x0000000004431000-memory.dmp

memory/1420-54-0x0000000004470000-0x0000000004471000-memory.dmp

memory/1420-53-0x00000000044B0000-0x00000000044B1000-memory.dmp

memory/1420-52-0x00000000049D0000-0x00000000049DE000-memory.dmp

memory/1420-60-0x0000000075E10000-0x0000000075F00000-memory.dmp

memory/1420-61-0x0000000075640000-0x0000000075654000-memory.dmp

memory/1420-62-0x0000000004460000-0x0000000004461000-memory.dmp

memory/1420-63-0x0000000004980000-0x0000000004981000-memory.dmp

memory/1420-64-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-65-0x0000000000270000-0x0000000000271000-memory.dmp

memory/1420-66-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-67-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-68-0x0000000075E10000-0x0000000075F00000-memory.dmp

memory/1420-69-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-70-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-72-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-73-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-74-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-75-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-76-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-77-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-78-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-79-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/1420-80-0x0000000000400000-0x00000000006A9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-25 16:54

Reported

2024-03-25 16:57

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\de7da11f23c0d9763fdd5c9676edf858.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\de7da11f23c0d9763fdd5c9676edf858.exe

"C:\Users\Admin\AppData\Local\Temp\de7da11f23c0d9763fdd5c9676edf858.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 178.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 195.177.78.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 210.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 182.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 203.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/2828-0-0x0000000000950000-0x0000000000951000-memory.dmp

memory/2828-1-0x0000000000B90000-0x0000000000C79000-memory.dmp