modiloader | b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537

General

Target

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
Size

763KB
MD5

9fb6ba59b9969fdad45af1244376684d
SHA1

7d2f3cd05ba0cf83910955009166de83a47c2ad8
SHA256

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537
SHA512

ec567474d38e22c7662eb5e9947b71d1b43e128437a842a8b0c9e9625482746ac9435005718b9097db51225fc8505d1a8b42a0dd0d40b371a38cebedc89ad0da
SSDEEP

12288:Cydu6z3cosEJIM624U8+0pjxvdXy5MeTv2B7xR+q7hngD5PDMbgrCD:55XJl628rVxvdUbO5xoqsRDM

Score

10^/10

modiloader evasion persistence themida trojan

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

mstwain32.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

ModiLoader Second Stage 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1952-56-0x0000000000400000-0x00000000005B5000-memory.dmp	modiloader_stage2
behavioral1/memory/1952-57-0x0000000000400000-0x00000000005B5000-memory.dmp	modiloader_stage2
behavioral1/memory/1952-61-0x0000000000400000-0x00000000005B5000-memory.dmp	modiloader_stage2
behavioral1/memory/804-63-0x0000000000400000-0x00000000005B5000-memory.dmp	modiloader_stage2
behavioral1/memory/804-65-0x0000000000400000-0x00000000005B5000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

Processes:

mstwain32.exe

pid process

804 mstwain32.exe
Deletes itself 1 IoCs

Processes:

mstwain32.exe

pid process

804 mstwain32.exe

pid	process
804	mstwain32.exe

pid	process
804	mstwain32.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exemstwain32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Wine	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Wine	mstwain32.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1952-54-0x0000000000400000-0x00000000005B5000-memory.dmp	themida
behavioral1/memory/1952-56-0x0000000000400000-0x00000000005B5000-memory.dmp	themida
behavioral1/memory/1952-57-0x0000000000400000-0x00000000005B5000-memory.dmp	themida
C:\Windows\mstwain32.exe	themida
behavioral1/memory/1952-61-0x0000000000400000-0x00000000005B5000-memory.dmp	themida
behavioral1/memory/804-63-0x0000000000400000-0x00000000005B5000-memory.dmp	themida
behavioral1/memory/804-65-0x0000000000400000-0x00000000005B5000-memory.dmp	themida

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

mstwain32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe"	mstwain32.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exemstwain32.exe

pid process

1952 b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
804 mstwain32.exe

pid	process
1952	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
804	mstwain32.exe

Drops file in Windows directory 4 IoCs

Processes:

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exemstwain32.exe

description	ioc	process
File created	C:\Windows\mstwain32.exe	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
File opened for modification	C:\Windows\mstwain32.exe	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exemstwain32.exe

pid process

1952 b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
804 mstwain32.exe

pid	process
1952	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
804	mstwain32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exevssvc.exemstwain32.exe

description	pid	process
Token: SeDebugPrivilege	1952	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
Token: SeBackupPrivilege	1788	vssvc.exe
Token: SeRestorePrivilege	1788	vssvc.exe
Token: SeAuditPrivilege	1788	vssvc.exe
Token: SeDebugPrivilege	804	mstwain32.exe
Token: SeDebugPrivilege	804	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

mstwain32.exe

pid process

804 mstwain32.exe
804 mstwain32.exe

pid	process
804	mstwain32.exe
804	mstwain32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe

description	pid	process	target process
PID 1952 wrote to memory of 804	1952	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe	mstwain32.exe
PID 1952 wrote to memory of 804	1952	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe	mstwain32.exe
PID 1952 wrote to memory of 804	1952	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe	mstwain32.exe
PID 1952 wrote to memory of 804	1952	b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe	mstwain32.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

mstwain32.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

C:\Users\Admin\AppData\Local\Temp\b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe
"C:\Users\Admin\AppData\Local\Temp\b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe"
1⤵
- Identifies Wine through registry keys
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1952

C:\Windows\mstwain32.exe
"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537.exe"
2⤵
- UAC bypass
- Executes dropped EXE
- Deletes itself
- Identifies Wine through registry keys
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:804

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1788

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

1

T1089

Modify Registry

3

T1112

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

1

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\mstwain32.exe
Filesize
763KB

MD5
9fb6ba59b9969fdad45af1244376684d

SHA1
7d2f3cd05ba0cf83910955009166de83a47c2ad8

SHA256
b7ec9b9f68ae19844ae6e55a5aa8a6cde8c54f09bbe93cf65570224d71d7c537

SHA512
ec567474d38e22c7662eb5e9947b71d1b43e128437a842a8b0c9e9625482746ac9435005718b9097db51225fc8505d1a8b42a0dd0d40b371a38cebedc89ad0da

Download Submit
memory/804-59-0x0000000000000000-mapping.dmp

Download
memory/804-63-0x0000000000400000-0x00000000005B5000-memory.dmp

Filesize
1.7MB

Download
memory/804-64-0x0000000004590000-0x000000000459E000-memory.dmp

Filesize
56KB

Download
memory/804-65-0x0000000000400000-0x00000000005B5000-memory.dmp

Filesize
1.7MB

Download
memory/1952-54-0x0000000000400000-0x00000000005B5000-memory.dmp

Filesize
1.7MB

Download
memory/1952-55-0x0000000075981000-0x0000000075983000-memory.dmp

Filesize
8KB

Download
memory/1952-56-0x0000000000400000-0x00000000005B5000-memory.dmp

Filesize
1.7MB

Download
memory/1952-57-0x0000000000400000-0x00000000005B5000-memory.dmp

Filesize
1.7MB

Download
memory/1952-58-0x00000000057C0000-0x00000000057D0000-memory.dmp

Filesize
64KB

Download
memory/1952-61-0x0000000000400000-0x00000000005B5000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads