c5f78fa16a534110cef680dac58ccc52b68cd15a9fe316d018c8d99b4a5228f2

General

Target

c5f78fa16a534110cef680dac58ccc52b68cd15a9fe316d018c8d99b4a5228f2.xls
Size

395KB
MD5

c4bd44f2a4ba7a3ecad01525dbf4594f
SHA1

2e5ba9159c2c52e31b3bfff76da6ba792d5c5aff
SHA256

c5f78fa16a534110cef680dac58ccc52b68cd15a9fe316d018c8d99b4a5228f2
SHA512

b5eb5dd7ce4422aae58b64b7218315eab836f7a24a008c1d8a259bdc76b28d6a94b520a70d76c6949942916441e0c798e7a4c1f5a04172b7e80df7b5317f39bd
SSDEEP

3072:h1mV2dDmU141vuzStkxFe03hQOZOz6AVtUWVFuA6uhMsQ5ZRWVbryaMQ7ITkPT9x:SLU41yDeoQOZedjRhQvjHUXQXuq

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	4168	3208	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1776	3208	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4372	3208	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 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

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

3208 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE
3208	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3208 wrote to memory of 4688	3208	EXCEL.EXE	splwow64.exe
PID 3208 wrote to memory of 4688	3208	EXCEL.EXE	splwow64.exe
PID 3208 wrote to memory of 4168	3208	EXCEL.EXE	cmd.exe
PID 3208 wrote to memory of 4168	3208	EXCEL.EXE	cmd.exe
PID 3208 wrote to memory of 1776	3208	EXCEL.EXE	cmd.exe
PID 3208 wrote to memory of 1776	3208	EXCEL.EXE	cmd.exe
PID 3208 wrote to memory of 4372	3208	EXCEL.EXE	cmd.exe
PID 3208 wrote to memory of 4372	3208	EXCEL.EXE	cmd.exe
PID 4168 wrote to memory of 4612	4168	cmd.exe	attrib.exe
PID 4168 wrote to memory of 4612	4168	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4612 attrib.exe

pid	process
4612	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\c5f78fa16a534110cef680dac58ccc52b68cd15a9fe316d018c8d99b4a5228f2.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3208

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:4688

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:4168

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4612

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:1776

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:4372

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:2784

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\1743aee2d4fa4128be4b0a53accd9cb1 /t 4584 /p 3208
1⤵
PID:3212

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1776-142-0x0000000000000000-mapping.dmp

Download
memory/3208-135-0x00007FFC36B70000-0x00007FFC36B80000-memory.dmp

Filesize
64KB

Download
memory/3208-134-0x00007FFC36B70000-0x00007FFC36B80000-memory.dmp

Filesize
64KB

Download
memory/3208-132-0x00007FFC36B70000-0x00007FFC36B80000-memory.dmp

Filesize
64KB

Download
memory/3208-136-0x00007FFC36B70000-0x00007FFC36B80000-memory.dmp

Filesize
64KB

Download
memory/3208-137-0x00007FFC34210000-0x00007FFC34220000-memory.dmp

Filesize
64KB

Download
memory/3208-138-0x00007FFC34210000-0x00007FFC34220000-memory.dmp

Filesize
64KB

Download
memory/3208-140-0x0000021FB94FA000-0x0000021FB94FC000-memory.dmp

Filesize
8KB

Download
memory/3208-133-0x00007FFC36B70000-0x00007FFC36B80000-memory.dmp

Filesize
64KB

Download
memory/3208-145-0x0000021FB94FA000-0x0000021FB94FC000-memory.dmp

Filesize
8KB

Download
memory/4168-141-0x0000000000000000-mapping.dmp

Download
memory/4372-143-0x0000000000000000-mapping.dmp

Download
memory/4612-144-0x0000000000000000-mapping.dmp

Download
memory/4688-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads