a30b5d550915a8aae62a985a087df140be24c665c6d8977b38ac072f8c822fa0

Analysis

max time kernel
152s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
28/11/2022, 01:15

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General

Target

a30b5d550915a8aae62a985a087df140be24c665c6d8977b38ac072f8c822fa0.xls
Size

147KB
MD5

89931447b43c20e47cf5d5a56ce8871f
SHA1

2a799346033124326fde9ec344220d48c9760165
SHA256

a30b5d550915a8aae62a985a087df140be24c665c6d8977b38ac072f8c822fa0
SHA512

90d6709943a73d670b7babe1b591418ab26a8add04aeef19758f0bad59e0f91ffd478456e49dbd03dfd117214a16daa8bf31214ed74229a4d20364a1028a4b8c
SSDEEP

1536:OeeeqsaebRowWiL8O820MVKWVbrzQ7IzKK5kbA23FkI/cJtXwqpa87237ZIDEE:rbRfb8uoWVbrzQ7IWskZWIEJtXwLODv

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	4208	4960	cmd.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4220	4960	cmd.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3940	4960	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4960	EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

pid	Process
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE
4960	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 4208	4960	EXCEL.EXE	90
PID 4960 wrote to memory of 4208	4960	EXCEL.EXE	90
PID 4960 wrote to memory of 4220	4960	EXCEL.EXE	92
PID 4960 wrote to memory of 4220	4960	EXCEL.EXE	92
PID 4960 wrote to memory of 3940	4960	EXCEL.EXE	93
PID 4960 wrote to memory of 3940	4960	EXCEL.EXE	93
PID 4208 wrote to memory of 4584	4208	cmd.exe	96
PID 4208 wrote to memory of 4584	4208	cmd.exe	96

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4584	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\a30b5d550915a8aae62a985a087df140be24c665c6d8977b38ac072f8c822fa0.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4960
- 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:4208
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:4584
- 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:4220
- 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:3940

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\2750bf53be3448c6ade0ab1b98a8bad0 /t 3352 /p 4960
1⤵
PID:1568

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/4960-132-0x00007FFD6ABF0000-0x00007FFD6AC00000-memory.dmp

Filesize
64KB

Download
memory/4960-133-0x00007FFD6ABF0000-0x00007FFD6AC00000-memory.dmp

Filesize
64KB

Download
memory/4960-134-0x00007FFD6ABF0000-0x00007FFD6AC00000-memory.dmp

Filesize
64KB

Download
memory/4960-135-0x00007FFD6ABF0000-0x00007FFD6AC00000-memory.dmp

Filesize
64KB

Download
memory/4960-136-0x00007FFD6ABF0000-0x00007FFD6AC00000-memory.dmp

Filesize
64KB

Download
memory/4960-137-0x00007FFD68B90000-0x00007FFD68BA0000-memory.dmp

Filesize
64KB

Download
memory/4960-138-0x00007FFD68B90000-0x00007FFD68BA0000-memory.dmp

Filesize
64KB

Download
memory/4960-143-0x000002245C162000-0x000002245C164000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads