4513c7bf3eba413e076d4e091bd3d88284644f2f051b9ebfdd537f982ddd6e61

General

Target

Attachment_65307.xlsb
Size

106KB
MD5

3827cfd0b93d8d87c434a774782e434a
SHA1

1aff5b6db02cb808b41216e4bc4aeed1ef63b4d5
SHA256

4513c7bf3eba413e076d4e091bd3d88284644f2f051b9ebfdd537f982ddd6e61
SHA512

6e7bee5ba20655dcfd561db2c18409c7b72d8b84526efcff36a116565441922a880bfda071f24127cac43289c9ece12a98ff23d31ef91912e50c6d148f9e792b

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://85.90.247.25/campo/o/o

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

rundll32.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	1144	912	rundll32.exe	EXCEL.EXE

Loads dropped DLL 4 IoCs

Processes:

rundll32.exe

pid process

1144 rundll32.exe
1144 rundll32.exe
1144 rundll32.exe
1144 rundll32.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

pid	process
1144	rundll32.exe
1144	rundll32.exe
1144	rundll32.exe
1144	rundll32.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
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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	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
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\Se&nd to OneNote	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

912 EXCEL.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

EXCEL.EXE

pid process

912 EXCEL.EXE
912 EXCEL.EXE
912 EXCEL.EXE
912 EXCEL.EXE
912 EXCEL.EXE
912 EXCEL.EXE
912 EXCEL.EXE

pid	process
912	EXCEL.EXE

pid	process
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 912 wrote to memory of 1144	912	EXCEL.EXE	rundll32.exe
PID 912 wrote to memory of 1144	912	EXCEL.EXE	rundll32.exe
PID 912 wrote to memory of 1144	912	EXCEL.EXE	rundll32.exe
PID 912 wrote to memory of 1144	912	EXCEL.EXE	rundll32.exe
PID 912 wrote to memory of 1144	912	EXCEL.EXE	rundll32.exe
PID 912 wrote to memory of 1144	912	EXCEL.EXE	rundll32.exe
PID 912 wrote to memory of 1144	912	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\Attachment_65307.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:912

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\ProgramData\ddeu\96.dll,DllRegisterServer1
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:1144

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

C:\ProgramData\ddeu\96.dll
MD5
48cab21fcbe254e7c83f4c1d455a39dc

SHA1
b96c1f765abb14eb401cacab6f6e203c3a255df9

SHA256
f1b9d5520ba13179e19b336e542d18b0bd9f39a2b41d88a739625c8480422b73

SHA512
0375a26a2d6d8990d202b75b4cb6797d03300ddc077c4dcb05778365212644ee49ce6e437fde0b77e1b8179d01ffad028635869d2f3897333b85471724d15ebc

Download Submit
\ProgramData\ddeu\96.dll
MD5
48cab21fcbe254e7c83f4c1d455a39dc

SHA1
b96c1f765abb14eb401cacab6f6e203c3a255df9

SHA256
f1b9d5520ba13179e19b336e542d18b0bd9f39a2b41d88a739625c8480422b73

SHA512
0375a26a2d6d8990d202b75b4cb6797d03300ddc077c4dcb05778365212644ee49ce6e437fde0b77e1b8179d01ffad028635869d2f3897333b85471724d15ebc

Download Submit
\ProgramData\ddeu\96.dll
MD5
48cab21fcbe254e7c83f4c1d455a39dc

SHA1
b96c1f765abb14eb401cacab6f6e203c3a255df9

SHA256
f1b9d5520ba13179e19b336e542d18b0bd9f39a2b41d88a739625c8480422b73

SHA512
0375a26a2d6d8990d202b75b4cb6797d03300ddc077c4dcb05778365212644ee49ce6e437fde0b77e1b8179d01ffad028635869d2f3897333b85471724d15ebc

Download Submit
\ProgramData\ddeu\96.dll
MD5
48cab21fcbe254e7c83f4c1d455a39dc

SHA1
b96c1f765abb14eb401cacab6f6e203c3a255df9

SHA256
f1b9d5520ba13179e19b336e542d18b0bd9f39a2b41d88a739625c8480422b73

SHA512
0375a26a2d6d8990d202b75b4cb6797d03300ddc077c4dcb05778365212644ee49ce6e437fde0b77e1b8179d01ffad028635869d2f3897333b85471724d15ebc

Download Submit
\ProgramData\ddeu\96.dll
MD5
48cab21fcbe254e7c83f4c1d455a39dc

SHA1
b96c1f765abb14eb401cacab6f6e203c3a255df9

SHA256
f1b9d5520ba13179e19b336e542d18b0bd9f39a2b41d88a739625c8480422b73

SHA512
0375a26a2d6d8990d202b75b4cb6797d03300ddc077c4dcb05778365212644ee49ce6e437fde0b77e1b8179d01ffad028635869d2f3897333b85471724d15ebc

Download Submit
memory/912-2-0x000000002F071000-0x000000002F074000-memory.dmp

Filesize
12KB

Download
memory/912-3-0x0000000071771000-0x0000000071773000-memory.dmp

Filesize
8KB

Download
memory/912-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1144-6-0x0000000000000000-mapping.dmp

Download
memory/1144-7-0x0000000076381000-0x0000000076383000-memory.dmp

Filesize
8KB

Download
memory/1588-5-0x000007FEF6460000-0x000007FEF66DA000-memory.dmp

Filesize
2.5MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads