nloader | 89b7f39fb7a0c7742e90a19bd5c6bbae275b48b6de9f0a1e120ba5b6615263ab

General

Target

Fattura.xlsb
Size

249KB
MD5

6099fd6bb0b51b4eaeb02f7169a2b072
SHA1

179e6c3a18f9ead886f22c0df2b383e9161662dd
SHA256

89b7f39fb7a0c7742e90a19bd5c6bbae275b48b6de9f0a1e120ba5b6615263ab
SHA512

e2ba30f2ea42cc1985c87887bb1bc2dd39e39243619c31df5194c36ab451740dd1e446717fd85b6c9419ba611224813f7dc40c37838131daf6a498c4585e8b68

Score

10^/10

nloader loader

Malware Config

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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1308	852	cmd.exe	EXCEL.EXE

Nloader Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3544-186-0x0000000000400000-0x00000000004AE000-memory.dmp	nloader

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

30 3544 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3544 rundll32.exe

flow	pid	process
30	3544	rundll32.exe

pid	process
3544	rundll32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

852 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

EXCEL.EXEcmd.exerundll32.exe

description	pid	process	target process
PID 852 wrote to memory of 1308	852	EXCEL.EXE	cmd.exe
PID 852 wrote to memory of 1308	852	EXCEL.EXE	cmd.exe
PID 1308 wrote to memory of 1676	1308	cmd.exe	certutil.exe
PID 1308 wrote to memory of 1676	1308	cmd.exe	certutil.exe
PID 1308 wrote to memory of 2232	1308	cmd.exe	rundll32.exe
PID 1308 wrote to memory of 2232	1308	cmd.exe	rundll32.exe
PID 2232 wrote to memory of 3544	2232	rundll32.exe	rundll32.exe
PID 2232 wrote to memory of 3544	2232	rundll32.exe	rundll32.exe
PID 2232 wrote to memory of 3544	2232	rundll32.exe	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Fattura.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:852

C:\Windows\SYSTEM32\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:1308

C:\Windows\system32\certutil.exe
certutil -decode C:\Users\Public\130486.dot C:\Users\Public\130486.pgj
3⤵
PID:1676

C:\Windows\system32\rundll32.exe
rundll32 C:\Users\Public\130486.pgj,DF1
3⤵
- Suspicious use of WriteProcessMemory
PID:2232

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Public\130486.pgj,DF1
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:3544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

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/852-118-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/852-114-0x00007FF629660000-0x00007FF62CC16000-memory.dmp

Filesize
53.7MB

Download
memory/852-121-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/852-122-0x00007FFD4B780000-0x00007FFD4C86E000-memory.dmp

Filesize
16.9MB

Download
memory/852-123-0x00007FFD49880000-0x00007FFD4B775000-memory.dmp

Filesize
31.0MB

Download
memory/852-117-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/852-116-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/852-115-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/1308-179-0x0000000000000000-mapping.dmp

Download
memory/1676-180-0x0000000000000000-mapping.dmp

Download
memory/2232-182-0x0000000000000000-mapping.dmp

Download
memory/3544-184-0x0000000000000000-mapping.dmp

Download
memory/3544-186-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads