modiloader | 43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee

General

Target

43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe
Size

275KB
MD5

82808f7ff9cf6b09815efb737e80aaa7
SHA1

053d4c5f5a937c746b4768aa74062fbd825860df
SHA256

43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee
SHA512

c05c047ad0a593b3c946d156a13cb048fb7e10ff94fbc60ce0a2f3a9478342276597d30ad13e4802751bfd319fd8c47d2dc3029b257c2e2cc873b74f4afbc12b
SSDEEP

6144:KG377xS2Vp2CeiorXhwTBOx53UpcCJJvH:Zr7xS2Vp6FwTFbJJvH

Score

10^/10

modiloader evasion persistence 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 17 IoCs

Processes:

resource	yara_rule
C:\Windows\mstwain32.exe	modiloader_stage2
behavioral1/memory/1376-62-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
C:\Windows\mstwain32.exe	modiloader_stage2
behavioral1/memory/1012-70-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-71-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-73-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-74-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-75-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-76-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-77-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-78-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-79-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-80-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-81-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-82-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-83-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2
behavioral1/memory/1012-84-0x0000000000400000-0x000000000044D000-memory.dmp	modiloader_stage2

Deletes itself 1 IoCs

Processes:

mstwain32.exe

pid process

1012 mstwain32.exe
Executes dropped EXE 1 IoCs

Processes:

mstwain32.exe

pid process

1012 mstwain32.exe

pid	process
1012	mstwain32.exe

pid	process
1012	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-1-5-21-3499517378-2376672570-1134980332-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\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:

43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.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:

43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exemstwain32.exe

description	ioc	process
File opened for modification	C:\Windows\mstwain32.exe	43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe
File created	C:\Windows\mstwain32.exe	43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.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:

43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exevssvc.exemstwain32.exe

description	pid	process
Token: SeDebugPrivilege	1376	43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe
Token: SeBackupPrivilege	1348	vssvc.exe
Token: SeRestorePrivilege	1348	vssvc.exe
Token: SeAuditPrivilege	1348	vssvc.exe
Token: SeDebugPrivilege	1012	mstwain32.exe
Token: SeDebugPrivilege	1012	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

mstwain32.exe

pid process

1012 mstwain32.exe
1012 mstwain32.exe

pid	process
1012	mstwain32.exe
1012	mstwain32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe

description	pid	process	target process
PID 1376 wrote to memory of 1012	1376	43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe	mstwain32.exe
PID 1376 wrote to memory of 1012	1376	43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe	mstwain32.exe
PID 1376 wrote to memory of 1012	1376	43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe	mstwain32.exe
PID 1376 wrote to memory of 1012	1376	43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.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
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

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

C:\Users\Admin\AppData\Local\Temp\43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe
"C:\Users\Admin\AppData\Local\Temp\43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe"
1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1376

C:\Windows\mstwain32.exe
"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee.exe"
2⤵
- UAC bypass
- Deletes itself
- Executes dropped EXE
- 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:1012

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1348

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

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\mstwain32.exe
Filesize
275KB

MD5
82808f7ff9cf6b09815efb737e80aaa7

SHA1
053d4c5f5a937c746b4768aa74062fbd825860df

SHA256
43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee

SHA512
c05c047ad0a593b3c946d156a13cb048fb7e10ff94fbc60ce0a2f3a9478342276597d30ad13e4802751bfd319fd8c47d2dc3029b257c2e2cc873b74f4afbc12b

Download Submit
C:\Windows\mstwain32.exe
Filesize
275KB

MD5
82808f7ff9cf6b09815efb737e80aaa7

SHA1
053d4c5f5a937c746b4768aa74062fbd825860df

SHA256
43bb5ce39aa18f8d17eb1243cbf327a16b2c0b05c94dc7e2044b773d6e8193ee

SHA512
c05c047ad0a593b3c946d156a13cb048fb7e10ff94fbc60ce0a2f3a9478342276597d30ad13e4802751bfd319fd8c47d2dc3029b257c2e2cc873b74f4afbc12b

Download Submit
memory/1012-75-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-76-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-68-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1012-69-0x00000000008A0000-0x00000000008A1000-memory.dmp

Filesize
4KB

Download
memory/1012-70-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-71-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-73-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-74-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-84-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-66-0x0000000001E00000-0x0000000001E0E000-memory.dmp

Filesize
56KB

Download
memory/1012-77-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-78-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-79-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-80-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-81-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-82-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1012-83-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1376-62-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads