4a4c081dfa3e5ed52c0d83993488035b25bc06131533da4354609672466ad7cd

Analysis

max time kernel
119s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
18/09/2022, 22:25

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General

Target

4a4c081dfa3e5ed52c0d83993488035b25bc06131533da4354609672466ad7cd.xls
Size

86KB
MD5

35fd15b09f2879c701cf179a22fa6222
SHA1

d3877787645af1f27f3f3a0aba8eee245f7c2c61
SHA256

4a4c081dfa3e5ed52c0d83993488035b25bc06131533da4354609672466ad7cd
SHA512

6bfca12951c8d9ed09bede775b3708017e468701e0f3af584ad033c0213d758e3a68ad78c4d45a048680424ba8f00152bf365aea93998af3e96a21ba7fb0fe70
SSDEEP

1536:/222yCDdDjqqhxGWVbruQ7ITkScTx23c2UcJMXw0cHx:2i7WVbruQ7ITkCfXJMXw5x

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 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	1352	3204	cmd.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4412	3204	cmd.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1652	3204	cmd.exe	81

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3204	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 1352	3204	EXCEL.EXE	94
PID 3204 wrote to memory of 1352	3204	EXCEL.EXE	94
PID 3204 wrote to memory of 1652	3204	EXCEL.EXE	99
PID 3204 wrote to memory of 1652	3204	EXCEL.EXE	99
PID 3204 wrote to memory of 4412	3204	EXCEL.EXE	97
PID 3204 wrote to memory of 4412	3204	EXCEL.EXE	97
PID 1352 wrote to memory of 4688	1352	cmd.exe	100
PID 1352 wrote to memory of 4688	1352	cmd.exe	100

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4688	attrib.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\4a4c081dfa3e5ed52c0d83993488035b25bc06131533da4354609672466ad7cd.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1352
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:4688
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  PID:4412
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  PID:1652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3204-138-0x00007FF80C140000-0x00007FF80C150000-memory.dmp

Filesize
64KB

Download
memory/3204-135-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download
memory/3204-136-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download
memory/3204-137-0x00007FF80C140000-0x00007FF80C150000-memory.dmp

Filesize
64KB

Download
memory/3204-132-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download
memory/3204-134-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download
memory/3204-133-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download
memory/3204-144-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download
memory/3204-145-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download
memory/3204-146-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download
memory/3204-147-0x00007FF80E8D0000-0x00007FF80E8E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads