nloader | 89b7f39fb7a0c7742e90a19bd5c6bbae275b48b6de9f0a1e120ba5b6615263ab

General

Target

Fattura.xlsb
Size

249KB
MD5

6099fd6bb0b51b4eaeb02f7169a2b072
SHA1

179e6c3a18f9ead886f22c0df2b383e9161662dd
SHA256

89b7f39fb7a0c7742e90a19bd5c6bbae275b48b6de9f0a1e120ba5b6615263ab
SHA512

e2ba30f2ea42cc1985c87887bb1bc2dd39e39243619c31df5194c36ab451740dd1e446717fd85b6c9419ba611224813f7dc40c37838131daf6a498c4585e8b68

Score

10^/10

nloader loader

Malware Config

Extracted

Language

xlm4.0

Source

Signatures

Nloader
Simple loader that includes the keyword 'campo' in the URL used to download other families.
loader nloader

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	304	1096	cmd.exe	EXCEL.EXE

Nloader Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1108-70-0x0000000000140000-0x0000000000145000-memory.dmp	nloader

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

5 1108 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1108 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

flow	pid	process
5	1108	rundll32.exe

pid	process
1108	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
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1096 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1096 EXCEL.EXE
1096 EXCEL.EXE
1096 EXCEL.EXE

pid	process
1096	EXCEL.EXE

pid	process
1096	EXCEL.EXE
1096	EXCEL.EXE
1096	EXCEL.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1096 wrote to memory of 304	1096	EXCEL.EXE	cmd.exe
PID 1096 wrote to memory of 304	1096	EXCEL.EXE	cmd.exe
PID 1096 wrote to memory of 304	1096	EXCEL.EXE	cmd.exe
PID 1096 wrote to memory of 304	1096	EXCEL.EXE	cmd.exe
PID 304 wrote to memory of 368	304	cmd.exe	certutil.exe
PID 304 wrote to memory of 368	304	cmd.exe	certutil.exe
PID 304 wrote to memory of 368	304	cmd.exe	certutil.exe
PID 304 wrote to memory of 368	304	cmd.exe	certutil.exe
PID 304 wrote to memory of 1108	304	cmd.exe	rundll32.exe
PID 304 wrote to memory of 1108	304	cmd.exe	rundll32.exe
PID 304 wrote to memory of 1108	304	cmd.exe	rundll32.exe
PID 304 wrote to memory of 1108	304	cmd.exe	rundll32.exe
PID 304 wrote to memory of 1108	304	cmd.exe	rundll32.exe
PID 304 wrote to memory of 1108	304	cmd.exe	rundll32.exe
PID 304 wrote to memory of 1108	304	cmd.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\Fattura.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1096

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c certutil -decode %PUBLIC%\130486.dot %PUBLIC%\130486.pgj && rundll32 %PUBLIC%\130486.pgj,DF1
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:304

C:\Windows\SysWOW64\certutil.exe
certutil -decode C:\Users\Public\130486.dot C:\Users\Public\130486.pgj
3⤵
PID:368

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Public\130486.pgj,DF1
3⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:1108

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:\Users\Public\130486.dot
MD5
6419bb0e1d573eb7f069459a6140b305

SHA1
304b3025cc04eec5bd5dbab2aea2d315425c7012

SHA256
ca7cad96c718e1fb8d38fcf1cb81a311cbcaa45991499aa6ddebb91ef862acc0

SHA512
6948043ae458463778896aff887ee405cfa1f243bae0d2d6a2f9f2c33f9c19f3aafa056a79088307f8023f220511fa2453860707b03166a0d0f1df88553e1397

Download Submit
C:\Users\Public\130486.pgj
MD5
8d7a888b48d11e2847363286357b1352

SHA1
d4fded711883ba0e7b801ceec2cf58920d294c32

SHA256
9759f0a782cc79fcf71a4af40bb321ab6cdd33fb043a406bbd502ccdede45902

SHA512
6eee5b900a2f492d55ef784433342b2ca18880e293cd6d5c0cad4773710d5a6dfc2eca5a61c3303b77ec9bd6563d8051da8f00bf1ce1f4b24f0fd4a43a84b9aa

Download Submit
\Users\Public\130486.pgj
MD5
8d7a888b48d11e2847363286357b1352

SHA1
d4fded711883ba0e7b801ceec2cf58920d294c32

SHA256
9759f0a782cc79fcf71a4af40bb321ab6cdd33fb043a406bbd502ccdede45902

SHA512
6eee5b900a2f492d55ef784433342b2ca18880e293cd6d5c0cad4773710d5a6dfc2eca5a61c3303b77ec9bd6563d8051da8f00bf1ce1f4b24f0fd4a43a84b9aa

Download Submit
memory/304-62-0x0000000000000000-mapping.dmp

Download
memory/368-63-0x0000000000000000-mapping.dmp

Download
memory/368-64-0x0000000075281000-0x0000000075283000-memory.dmp

Filesize
8KB

Download
memory/1096-59-0x000000002FE41000-0x000000002FE44000-memory.dmp

Filesize
12KB

Download
memory/1096-60-0x0000000070EB1000-0x0000000070EB3000-memory.dmp

Filesize
8KB

Download
memory/1096-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1108-66-0x0000000000000000-mapping.dmp

Download
memory/1108-70-0x0000000000140000-0x0000000000145000-memory.dmp

Filesize
20KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads