5a21120c9bd779786888f9d4d2a138836e627f001dbacc80c2b035ff7d198715

Resubmissions

22-12-2022 07:10

221222-hzmwnsea46 10

09-04-2020 15:40

200409-vmw4mgq77e 10

Analysis

max time kernel
96s
max time network
143s
platform
windows10_x64
resource
win10v200217
submitted
09-04-2020 15:40

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General

Target

9ef8631578196747fe6198a97c0ceb20.xls
Size

72KB
MD5

9ef8631578196747fe6198a97c0ceb20
SHA1

5eebe8e0a1c50e54391618b83a917e7f32b18bf8
SHA256

5a21120c9bd779786888f9d4d2a138836e627f001dbacc80c2b035ff7d198715
SHA512

04c7c0ecf6ad26546155218886188d5fc444c2067f9f28246094ad15fb5e4f1b0026fbc220ca18a2f34ba6f7629d371487b7dacfdbd6e4955fa64009e012a62f

Score

6^/10

Malware Config

Signatures

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3992 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

EXCEL.EXEdwwin.exe

pid process

3992 EXCEL.EXE
3992 EXCEL.EXE
2168 dwwin.exe
2168 dwwin.exe

pid	process
3992	EXCEL.EXE

pid	process
3992	EXCEL.EXE
3992	EXCEL.EXE
2168	dwwin.exe
2168	dwwin.exe

Process spawned suspicious child process 1 IoCs

This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

Processes:

DW20.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	3264	3992	DW20.EXE	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEDW20.EXE

description	pid	process	target process
PID 3992 wrote to memory of 3264	3992	EXCEL.EXE	DW20.EXE
PID 3992 wrote to memory of 3264	3992	EXCEL.EXE	DW20.EXE
PID 3264 wrote to memory of 2168	3264	DW20.EXE	dwwin.exe
PID 3264 wrote to memory of 2168	3264	DW20.EXE	dwwin.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

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

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

EXCEL.EXE

pid process

3992 EXCEL.EXE
3992 EXCEL.EXE
3992 EXCEL.EXE
3992 EXCEL.EXE
3992 EXCEL.EXE
3992 EXCEL.EXE
3992 EXCEL.EXE
3992 EXCEL.EXE

pid	process
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.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\9ef8631578196747fe6198a97c0ceb20.xls"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Enumerates system info in registry
- Checks processor information in registry
- Suspicious use of SetWindowsHookEx
PID:3992

C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE
"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 4584
2⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:3264

C:\Windows\system32\dwwin.exe
C:\Windows\system32\dwwin.exe -x -s 4584
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2168

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/2168-0-0x0000020356EB0000-0x0000020356EB1000-memory.dmp

Filesize
4KB

Download
memory/2168-1-0x0000020356EB0000-0x0000020356EB1000-memory.dmp

Filesize
4KB

Download
memory/2168-3-0x0000020357600000-0x0000020357601000-memory.dmp

Filesize
4KB

Download
memory/2168-6-0x0000020357A00000-0x0000020357A01000-memory.dmp

Filesize
4KB

Download
memory/2168-8-0x0000020357870000-0x0000020357871000-memory.dmp

Filesize
4KB

Download
memory/2168-9-0x0000020357870000-0x0000020357871000-memory.dmp

Filesize
4KB

Download
memory/2168-10-0x0000020357870000-0x0000020357871000-memory.dmp

Filesize
4KB

Download
memory/2168-11-0x0000020357540000-0x0000020357541000-memory.dmp

Filesize
4KB

Download