31f13bcedfd5e28b3fd679c47223c2d53f7aaf7c377e90d86e267cc1c3c8a66b

Analysis

max time kernel
177s
max time network
184s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 11:14

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General

Target

31f13bcedfd5e28b3fd679c47223c2d53f7aaf7c377e90d86e267cc1c3c8a66b.xls
Size

96KB
MD5

00142a44ffac759b5d3564e284b13325
SHA1

da2f651e19088d64c4750f5a808e7f0a8e8c5bc2
SHA256

31f13bcedfd5e28b3fd679c47223c2d53f7aaf7c377e90d86e267cc1c3c8a66b
SHA512

20761f2bd11628da72c02b736961104c3ee86ffdf9e52fefc4555583b680ee2a4491693c3376a41cf48b04a8dc3a738ef0629ea5040dd7943a0d9b5bc3874a81
SSDEEP

1536:ZQQQQcSxoPVy4tzw2pWVbrzQ7ITkoYlFA23k088ScJtXwPhfw:wDWVbrzQ7ITkRNjhJtXwJfw

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	2848	2268	cmd.exe	78
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2492	2268	cmd.exe	78
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3720	2268	cmd.exe	78

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

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\0DD75E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2268	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2848	2268	EXCEL.EXE	83
PID 2268 wrote to memory of 2848	2268	EXCEL.EXE	83
PID 2268 wrote to memory of 2492	2268	EXCEL.EXE	85
PID 2268 wrote to memory of 2492	2268	EXCEL.EXE	85
PID 2268 wrote to memory of 3720	2268	EXCEL.EXE	86
PID 2268 wrote to memory of 3720	2268	EXCEL.EXE	86
PID 2848 wrote to memory of 3488	2848	cmd.exe	89
PID 2848 wrote to memory of 3488	2848	cmd.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3488	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\31f13bcedfd5e28b3fd679c47223c2d53f7aaf7c377e90d86e267cc1c3c8a66b.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2268
- 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:2848
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:3488
- 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:2492
- 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:3720

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/2268-138-0x00007FFE75E50000-0x00007FFE75E60000-memory.dmp

Filesize
64KB

Download
memory/2268-145-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download
memory/2268-133-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download
memory/2268-135-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download
memory/2268-136-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download
memory/2268-137-0x00007FFE75E50000-0x00007FFE75E60000-memory.dmp

Filesize
64KB

Download
memory/2268-134-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download
memory/2268-147-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download
memory/2268-132-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download
memory/2268-146-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download
memory/2268-144-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads