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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	112	772	cmd.exe	24

Nloader Payload 1 IoCs

resource	yara_rule
behavioral1/memory/612-71-0x0000000000200000-0x0000000000205000-memory.dmp	nloader

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	612	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
612	rundll32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	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
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
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
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 (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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
772	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
772	EXCEL.EXE
772	EXCEL.EXE
772	EXCEL.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 772 wrote to memory of 112	772	EXCEL.EXE	30
PID 772 wrote to memory of 112	772	EXCEL.EXE	30
PID 772 wrote to memory of 112	772	EXCEL.EXE	30
PID 772 wrote to memory of 112	772	EXCEL.EXE	30
PID 112 wrote to memory of 580	112	cmd.exe	32
PID 112 wrote to memory of 580	112	cmd.exe	32
PID 112 wrote to memory of 580	112	cmd.exe	32
PID 112 wrote to memory of 580	112	cmd.exe	32
PID 112 wrote to memory of 612	112	cmd.exe	34
PID 112 wrote to memory of 612	112	cmd.exe	34
PID 112 wrote to memory of 612	112	cmd.exe	34
PID 112 wrote to memory of 612	112	cmd.exe	34
PID 112 wrote to memory of 612	112	cmd.exe	34
PID 112 wrote to memory of 612	112	cmd.exe	34
PID 112 wrote to memory of 612	112	cmd.exe	34

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:772
- 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:112
- - C:\Windows\SysWOW64\certutil.exe
    certutil -decode C:\Users\Public\130486.dot C:\Users\Public\130486.pgj
    3⤵
    PID:580
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32 C:\Users\Public\130486.pgj,DF1
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    PID:612

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/580-65-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/612-71-0x0000000000200000-0x0000000000205000-memory.dmp

Filesize
20KB

Download
memory/772-60-0x000000002F2E1000-0x000000002F2E4000-memory.dmp

Filesize
12KB

Download
memory/772-61-0x0000000071981000-0x0000000071983000-memory.dmp

Filesize
8KB

Download
memory/772-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Resubmissions

Analysis

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