8ae38838a0ac7bc827c20e48c197b798caac08b23034b439cff1ff48f9a3e4d3

Analysis

max time kernel
152s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2023 09:42

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General

Target

舍弗勒.xls
Size

134KB
MD5

36f9c83cc864931a440c4a5bd45f7a2b
SHA1

9fcf9a4bea3d88e9b2d4639940d5a4ee6b8c7805
SHA256

8ae38838a0ac7bc827c20e48c197b798caac08b23034b439cff1ff48f9a3e4d3
SHA512

345ef23109180e278d7bdb52ba2c1b5d651dbf01050b335b14aac92e6ba4d0232dde57a03acc1a9e413dcd9c8eef00832954e5ee50fa7e39192cca96c5757e08
SSDEEP

3072:BDVUpjDqF+wRj/eA05iisaKpvRvx639IgGhmSIYJtXwy:dVUpjDqF+wRj/eA05iisaKpvRvx639Zw

Score

1^/10

Malware Config

Signatures

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

4004 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4004 EXCEL.EXE
4004 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE
4004	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4004 wrote to memory of 4892	4004	EXCEL.EXE	splwow64.exe
PID 4004 wrote to memory of 4892	4004	EXCEL.EXE	splwow64.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\舍弗勒.xls"
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:4004

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:4892

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:3884

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/4004-133-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download
memory/4004-134-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download
memory/4004-135-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download
memory/4004-136-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download
memory/4004-137-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download
memory/4004-138-0x00007FFF14770000-0x00007FFF14780000-memory.dmp

Filesize
64KB

Download
memory/4004-139-0x00007FFF14770000-0x00007FFF14780000-memory.dmp

Filesize
64KB

Download
memory/4004-158-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download
memory/4004-159-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download
memory/4004-160-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download
memory/4004-161-0x00007FFF16870000-0x00007FFF16880000-memory.dmp

Filesize
64KB

Download