2461d35a86e8c4058d3d8e8a538e1fcb3522ec628bd627dad5a146a4924a9b4a

Analysis

max time kernel
147s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2022 08:45

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General

Target

2461d35a86e8c4058d3d8e8a538e1fcb3522ec628bd627dad5a146a4924a9b4a.xls
Size

193KB
MD5

2ee6db97049ae5df0187e6dac3fe3b91
SHA1

f73953e1ed8f6f08b608ffcecaa1187171f09deb
SHA256

2461d35a86e8c4058d3d8e8a538e1fcb3522ec628bd627dad5a146a4924a9b4a
SHA512

0b3c3120972d9679c9b0ad51f5e897a6e3f05bf49641f4723be22b64c2dbf7a97ee822542f438e67740049bbed33dd1238f19dabcceef473dfc8b7fc13290ffc
SSDEEP

6144:n1gxv7yZmspH7+cclKisMaX+9PwRnmzI:

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.

Processes:

cmd.execmd.execmd.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	3696	1208	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4396	1208	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2552	1208	cmd.exe	EXCEL.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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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 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

Processes:

EXCEL.EXE

pid process

1208 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE
1208	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1208 wrote to memory of 3696	1208	EXCEL.EXE	cmd.exe
PID 1208 wrote to memory of 3696	1208	EXCEL.EXE	cmd.exe
PID 1208 wrote to memory of 2552	1208	EXCEL.EXE	cmd.exe
PID 1208 wrote to memory of 2552	1208	EXCEL.EXE	cmd.exe
PID 1208 wrote to memory of 4396	1208	EXCEL.EXE	cmd.exe
PID 1208 wrote to memory of 4396	1208	EXCEL.EXE	cmd.exe
PID 3696 wrote to memory of 4360	3696	cmd.exe	attrib.exe
PID 3696 wrote to memory of 4360	3696	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4360 attrib.exe

pid	process
4360	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\2461d35a86e8c4058d3d8e8a538e1fcb3522ec628bd627dad5a146a4924a9b4a.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1208
- 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:3696
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:4360
- 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:4396
- 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:2552

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

Replay Monitor

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Downloads

memory/1208-132-0x00007FF8FD290000-0x00007FF8FD2A0000-memory.dmp

Filesize
64KB

Download
memory/1208-133-0x00007FF8FD290000-0x00007FF8FD2A0000-memory.dmp

Filesize
64KB

Download
memory/1208-134-0x00007FF8FD290000-0x00007FF8FD2A0000-memory.dmp

Filesize
64KB

Download
memory/1208-135-0x00007FF8FD290000-0x00007FF8FD2A0000-memory.dmp

Filesize
64KB

Download
memory/1208-136-0x00007FF8FD290000-0x00007FF8FD2A0000-memory.dmp

Filesize
64KB

Download
memory/1208-137-0x00007FF8FAD20000-0x00007FF8FAD30000-memory.dmp

Filesize
64KB

Download
memory/1208-138-0x00007FF8FAD20000-0x00007FF8FAD30000-memory.dmp

Filesize
64KB

Download
memory/2552-140-0x0000000000000000-mapping.dmp

Download
memory/3696-139-0x0000000000000000-mapping.dmp

Download
memory/4360-142-0x0000000000000000-mapping.dmp

Download
memory/4396-141-0x0000000000000000-mapping.dmp

Download