6c229ae1e0497a93bdc1655fed580e13fc94b300133de8f423984efbe0bc1138

General

Target

Fattura.xlsb
Size

249KB
MD5

cfb756f36616e64f4da99dce90b25661
SHA1

00f48058178e506ad535f7f5c00b632c41ba4b8f
SHA256

051770ec73c6bb36b839af3fcdc2e28e14f8e8c24f77f89bdc034c19f05516ed
SHA512

fce764ec2d370a3709af0a2a8e1eca125e175e3c14849362a9d301b13f631a44d3dbb2289d1cb224f1357aeaa0da42b0d6c54c544d7c226ca6b9d6f5d6a0a9e6

Score

10^/10

Malware Config

Signatures

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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1524	3176	cmd.exe	68

Loads dropped DLL 1 IoCs

pid	Process
4032	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4116	4032	WerFault.exe	85

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

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

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

pid	Process
3176	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe
4116	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	4116	WerFault.exe
Token: SeBackupPrivilege	4116	WerFault.exe
Token: SeDebugPrivilege	4116	WerFault.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3176	EXCEL.EXE
3176	EXCEL.EXE

Suspicious use of SetWindowsHookEx 22 IoCs

pid	Process
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3176 wrote to memory of 1524	3176	EXCEL.EXE	81
PID 3176 wrote to memory of 1524	3176	EXCEL.EXE	81
PID 1524 wrote to memory of 3952	1524	cmd.exe	83
PID 1524 wrote to memory of 3952	1524	cmd.exe	83
PID 1524 wrote to memory of 2284	1524	cmd.exe	84
PID 1524 wrote to memory of 2284	1524	cmd.exe	84
PID 2284 wrote to memory of 4032	2284	rundll32.exe	85
PID 2284 wrote to memory of 4032	2284	rundll32.exe	85
PID 2284 wrote to memory of 4032	2284	rundll32.exe	85

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 FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3176
- 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:1524
- - C:\Windows\system32\certutil.exe
    certutil -decode C:\Users\Public\130486.dot C:\Users\Public\130486.pgj
    3⤵
    PID:3952
- - C:\Windows\system32\rundll32.exe
    rundll32 C:\Users\Public\130486.pgj,DF1
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2284
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32 C:\Users\Public\130486.pgj,DF1
      4⤵
      Loads dropped DLL
      PID:4032
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 812
        5⤵
        Program crash
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4116

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

memory/3176-118-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/3176-121-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/3176-122-0x00007FF821040000-0x00007FF82212E000-memory.dmp

Filesize
16.9MB

Download
memory/3176-123-0x00007FF81F140000-0x00007FF821035000-memory.dmp

Filesize
31.0MB

Download
memory/3176-114-0x00007FF7472B0000-0x00007FF74A866000-memory.dmp

Filesize
53.7MB

Download
memory/3176-117-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/3176-116-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/3176-115-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/4032-186-0x0000000000600000-0x000000000074A000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads