modiloader | 524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac

General

Target

524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe
Size

133KB
MD5

0ddd8e3921b5033d8f7fac0f28ba2ec0
SHA1

8a312948eeec4927a2fa02aea04e6476cbb7a1b2
SHA256

524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac
SHA512

666c8795350833fc843bae1ee6dfaa366dc1abd18657034f8c2aae82295caf52aac62c42cfcd101994412ba32b96abe51baf4d45b63b5844285529329d6dcf77
SSDEEP

3072:n1+MJKrUnFYY5z1i0Nmbi5fJBNpXoutRRDWbVU:tIrPj0NmWtNpXoS3DWJU

Score

10^/10

modiloader evasion persistence trojan upx

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 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/856-56-0x0000000000400000-0x000000000045C000-memory.dmp	modiloader_stage2
behavioral1/memory/856-60-0x0000000003900000-0x0000000003910000-memory.dmp	modiloader_stage2
behavioral1/memory/856-64-0x0000000000400000-0x000000000045C000-memory.dmp	modiloader_stage2
behavioral1/memory/1516-66-0x0000000000400000-0x000000000045C000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

Processes:

mstwain32.exe

pid process

1516 mstwain32.exe

pid	process
1516	mstwain32.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/856-54-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral1/memory/856-56-0x0000000000400000-0x000000000045C000-memory.dmp	upx
C:\Windows\mstwain32.exe	upx
behavioral1/memory/856-64-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral1/memory/1516-66-0x0000000000400000-0x000000000045C000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

mstwain32.exe

pid process

1516 mstwain32.exe

pid	process
1516	mstwain32.exe

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:

524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.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

Drops file in Windows directory 4 IoCs

Processes:

524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exemstwain32.exe

description	ioc	process
File created	C:\Windows\mstwain32.exe	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe
File opened for modification	C:\Windows\mstwain32.exe	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.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 use of AdjustPrivilegeToken 6 IoCs

Processes:

524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exevssvc.exemstwain32.exe

description	pid	process
Token: SeDebugPrivilege	856	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe
Token: SeBackupPrivilege	2012	vssvc.exe
Token: SeRestorePrivilege	2012	vssvc.exe
Token: SeAuditPrivilege	2012	vssvc.exe
Token: SeDebugPrivilege	1516	mstwain32.exe
Token: SeDebugPrivilege	1516	mstwain32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe

pid process

856 524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

mstwain32.exe

pid process

1516 mstwain32.exe
1516 mstwain32.exe

pid	process
856	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe

pid	process
1516	mstwain32.exe
1516	mstwain32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe

description	pid	process	target process
PID 856 wrote to memory of 1516	856	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe	mstwain32.exe
PID 856 wrote to memory of 1516	856	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe	mstwain32.exe
PID 856 wrote to memory of 1516	856	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe	mstwain32.exe
PID 856 wrote to memory of 1516	856	524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.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\524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe
"C:\Users\Admin\AppData\Local\Temp\524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe"
1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:856

C:\Windows\mstwain32.exe
"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac.exe"
2⤵
- UAC bypass
- Executes dropped EXE
- Deletes itself
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:1516

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2012

Network

MITRE ATT&CK Enterprise 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

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mstwain32.exe
Filesize
133KB

MD5
0ddd8e3921b5033d8f7fac0f28ba2ec0

SHA1
8a312948eeec4927a2fa02aea04e6476cbb7a1b2

SHA256
524a4a4cb107389a68a2df3a4b63c40ac1b01996380d912431554c84a3e130ac

SHA512
666c8795350833fc843bae1ee6dfaa366dc1abd18657034f8c2aae82295caf52aac62c42cfcd101994412ba32b96abe51baf4d45b63b5844285529329d6dcf77

Download Submit
memory/856-54-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/856-55-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/856-56-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/856-57-0x0000000074BC1000-0x0000000074BC3000-memory.dmp

Filesize
8KB

Download
memory/856-61-0x0000000003210000-0x000000000326C000-memory.dmp

Filesize
368KB

Download
memory/856-62-0x0000000003210000-0x000000000326C000-memory.dmp

Filesize
368KB

Download
memory/856-60-0x0000000003900000-0x0000000003910000-memory.dmp

Filesize
64KB

Download
memory/856-64-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1516-58-0x0000000000000000-mapping.dmp

Download
memory/1516-65-0x00000000023E0000-0x00000000023EE000-memory.dmp

Filesize
56KB

Download
memory/1516-66-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads