5499a5b9e59cb76f0ff61083dbc75b554bbefa22e886d192bc5d07025e1add51

General

Target

attiv_750.xlsb
Size

84KB
MD5

5c380aada43584cb942a3f3c982420e7
SHA1

d22c914eb360933f3d51ca3da01178140fecf9e3
SHA256

5499a5b9e59cb76f0ff61083dbc75b554bbefa22e886d192bc5d07025e1add51
SHA512

662e6aaa7ab4912ddc44da2de4c2fe27bd60aefc9b3880a773cb7e8bd64217cc95ec8e347a1c3b24e75bfe0f6b68ca25c5fb08c3b3e2447f32f446f3b9dec4dd

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://periodiche.casa/signup.jpg

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	1232	1576	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
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 (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\MenuExt	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 (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
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\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

1576 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1576 EXCEL.EXE
1576 EXCEL.EXE
1576 EXCEL.EXE

pid	process
1576	EXCEL.EXE

pid	process
1576	EXCEL.EXE
1576	EXCEL.EXE
1576	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1576 wrote to memory of 1232	1576	EXCEL.EXE	rundll32.exe
PID 1576 wrote to memory of 1232	1576	EXCEL.EXE	rundll32.exe
PID 1576 wrote to memory of 1232	1576	EXCEL.EXE	rundll32.exe
PID 1576 wrote to memory of 1232	1576	EXCEL.EXE	rundll32.exe
PID 1576 wrote to memory of 1232	1576	EXCEL.EXE	rundll32.exe
PID 1576 wrote to memory of 1232	1576	EXCEL.EXE	rundll32.exe
PID 1576 wrote to memory of 1232	1576	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\attiv_750.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1576

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\NSDwEhu\tKOQIhw\WpkZFOP.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1232

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/1232-6-0x0000000000000000-mapping.dmp

Download
memory/1232-7-0x0000000075A41000-0x0000000075A43000-memory.dmp

Filesize
8KB

Download
memory/1576-2-0x000000002FAC1000-0x000000002FAC4000-memory.dmp

Filesize
12KB

Download
memory/1576-3-0x0000000071901000-0x0000000071903000-memory.dmp

Filesize
8KB

Download
memory/1576-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1884-5-0x000007FEF6780000-0x000007FEF69FA000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads