ee1e81fcd5e336fd2d19cc9eb0a5a8f796613f387b1b7216106d7130da0ea3cf

General

Target

Documents 4995.xlsb
Size

75KB
MD5

f26158691ea9aeec5e2aa69e58c65c7d
SHA1

0954a286bd666290d9396833cf948c62cd038492
SHA256

ee1e81fcd5e336fd2d19cc9eb0a5a8f796613f387b1b7216106d7130da0ea3cf
SHA512

6b223115cccfc67ce2449689af76744549d58b85f0cf491c591d6bfe60eb0bcd81f6b5044fafd62ecce90202a3ffb727b1617b93cf1184990e14412ac286b0fb

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://fcwinebarrelworks.com/drms/body.html

xlm40.dropper

https://studenthousecolchester.co.uk/drms/body.html

xlm40.dropper

https://novosite.autonor.com.br/drms/body.html

xlm40.dropper

https://tresvalesagro.com.br/drms/body.html

xlm40.dropper

https://www.docusign.com/doc.html

Signatures

Process spawned unexpected child process 5 IoCs

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

Processes:

rundll32.exerundll32.exerundll32.exerundll32.exerundll32.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	1012	1632	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1932	1632	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	560	1632	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1116	1632	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1660	1632	rundll32.exe	EXCEL.EXE

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 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1632 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1632 EXCEL.EXE
1632 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1632 EXCEL.EXE
1632 EXCEL.EXE
1632 EXCEL.EXE

pid	process
1632	EXCEL.EXE

pid	process
1632	EXCEL.EXE
1632	EXCEL.EXE

pid	process
1632	EXCEL.EXE
1632	EXCEL.EXE
1632	EXCEL.EXE

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1632 wrote to memory of 1012	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1012	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1012	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1012	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1012	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1012	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1012	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1932	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1932	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1932	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1932	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1932	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1932	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1932	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 560	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 560	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 560	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 560	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 560	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 560	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 560	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1116	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1116	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1116	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1116	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1116	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1116	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1116	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1660	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1660	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1660	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1660	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1660	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1660	1632	EXCEL.EXE	rundll32.exe
PID 1632 wrote to memory of 1660	1632	EXCEL.EXE	rundll32.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\Documents 4995.xlsb"
1⤵
- 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:1632

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\fikftkm.thj,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1012

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\fikftkm.thj1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1932

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\fikftkm.thj2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:560

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\fikftkm.thj3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1116

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\fikftkm.thj4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1660

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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

memory/560-67-0x0000000000000000-mapping.dmp

Download
memory/1012-63-0x0000000000000000-mapping.dmp

Download
memory/1012-64-0x0000000075551000-0x0000000075553000-memory.dmp

Filesize
8KB

Download
memory/1116-69-0x0000000000000000-mapping.dmp

Download
memory/1632-60-0x000000002FC61000-0x000000002FC64000-memory.dmp

Filesize
12KB

Download
memory/1632-61-0x0000000071831000-0x0000000071833000-memory.dmp

Filesize
8KB

Download
memory/1632-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1632-73-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1660-71-0x0000000000000000-mapping.dmp

Download
memory/1932-65-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads