modiloader | 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc

General

Target

8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
Size

108KB
MD5

7f153c69e1c47f2d2488db26caf1bb59
SHA1

da6cba4f375d8a48c352b8324da69db6fc04533a
SHA256

8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc
SHA512

8a4618b5919dc190c87715c5478bdf5b3256ba6990d3ffcd45f7466fca055412f6f2bd847252d00a63b981d9219ab2ac72f8b2f4e2b8cf9dbabd3cdd0c1c1523
SSDEEP

3072:f1+MJKrUnFYY5z1i0Nmbi5fJBNFSg7out:FIrPj0NmWtNFSg7oS

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:

comxss32.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" comxss32.exe

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1156-55-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral1/memory/1156-60-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral1/memory/1884-61-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral1/memory/1884-63-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

Processes:

comxss32.exe

pid process

1884 comxss32.exe

pid	process
1884	comxss32.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1156-55-0x0000000000400000-0x0000000000450000-memory.dmp	upx
C:\Windows\comxss32.exe	upx
behavioral1/memory/1156-60-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral1/memory/1884-61-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral1/memory/1884-63-0x0000000000400000-0x0000000000450000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

comxss32.exe

pid process

1884 comxss32.exe

pid	process
1884	comxss32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

comxss32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	comxss32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\comxss32 = "C:\\Windows\\comxss32.exe"	comxss32.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

comxss32.exe8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	comxss32.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	comxss32.exe

Drops file in Windows directory 4 IoCs

Processes:

comxss32.exe8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe

description	ioc	process
File created	C:\Windows\cmsetac.dll	comxss32.exe
File created	C:\Windows\comxss32.exe	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
File opened for modification	C:\Windows\comxss32.exe	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
File created	C:\Windows\ntdtcstp.dll	comxss32.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:

8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exevssvc.execomxss32.exe

description	pid	process
Token: SeDebugPrivilege	1156	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
Token: SeBackupPrivilege	1140	vssvc.exe
Token: SeRestorePrivilege	1140	vssvc.exe
Token: SeAuditPrivilege	1140	vssvc.exe
Token: SeDebugPrivilege	1884	comxss32.exe
Token: SeDebugPrivilege	1884	comxss32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe

pid process

1156 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

comxss32.exe

pid process

1884 comxss32.exe
1884 comxss32.exe

pid	process
1156	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe

pid	process
1884	comxss32.exe
1884	comxss32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe

description	pid	process	target process
PID 1156 wrote to memory of 1884	1156	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe	comxss32.exe
PID 1156 wrote to memory of 1884	1156	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe	comxss32.exe
PID 1156 wrote to memory of 1884	1156	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe	comxss32.exe
PID 1156 wrote to memory of 1884	1156	8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe	comxss32.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

comxss32.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" comxss32.exe

C:\Users\Admin\AppData\Local\Temp\8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
"C:\Users\Admin\AppData\Local\Temp\8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.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:1156

C:\Windows\comxss32.exe
"C:\Windows\comxss32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.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:1884

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1140

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\comxss32.exe
Filesize
108KB

MD5
7f153c69e1c47f2d2488db26caf1bb59

SHA1
da6cba4f375d8a48c352b8324da69db6fc04533a

SHA256
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc

SHA512
8a4618b5919dc190c87715c5478bdf5b3256ba6990d3ffcd45f7466fca055412f6f2bd847252d00a63b981d9219ab2ac72f8b2f4e2b8cf9dbabd3cdd0c1c1523

Download Submit
memory/1156-54-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download
memory/1156-55-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1156-56-0x0000000074431000-0x0000000074433000-memory.dmp

Filesize
8KB

Download
memory/1156-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1884-57-0x0000000000000000-mapping.dmp

Download
memory/1884-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1884-62-0x00000000005A0000-0x00000000005AE000-memory.dmp

Filesize
56KB

Download
memory/1884-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads