0a77c980c1b6ad85ffb3f1e8e814f96e09d5033d82dce7ca2062b992372c85e6

Analysis

max time kernel
230s
max time network
236s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 19:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

答辩16日第7组.xls
Size

101KB
MD5

2f424af4c436a6d478c427dbe7ac300a
SHA1

dad41d786c8efbb59f53142b6575c7d0e9ba9dc5
SHA256

9f6ecd64321955bc1fa80218a8edf38e80795b1718f2dcd6a04096dcca3c2ab9
SHA512

f33002fa59bf675629181e43a99680d8b9d92b628352332236d0e3cbe4ddd981a2da887e1889683de582fd77c1bc23957a58927b747aa6760bfe9c51a91cb5e2
SSDEEP

1536:G777PJtT1V3WVbrzQ7lSzTkR62lGM88DcJtXwRtM2M/MW1adQ:gWVbrzQ7UTk9tjYJtXwQ5ksadQ

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	4444	4992	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4188	4992	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4164	4992	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 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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4992 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4992 EXCEL.EXE
4992 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE
4992	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4992 wrote to memory of 4444	4992	EXCEL.EXE	cmd.exe
PID 4992 wrote to memory of 4444	4992	EXCEL.EXE	cmd.exe
PID 4992 wrote to memory of 4188	4992	EXCEL.EXE	cmd.exe
PID 4992 wrote to memory of 4188	4992	EXCEL.EXE	cmd.exe
PID 4992 wrote to memory of 4164	4992	EXCEL.EXE	cmd.exe
PID 4992 wrote to memory of 4164	4992	EXCEL.EXE	cmd.exe
PID 4444 wrote to memory of 1616	4444	cmd.exe	attrib.exe
PID 4444 wrote to memory of 1616	4444	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1616 attrib.exe

pid	process
1616	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\答辩16日第7组.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:4992

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:4444

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1616

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:4188

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:4164

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\7f74b2c7a0744637ad5f8625259d124b /t 4684 /p 4992
1⤵
PID:2288

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1616-150-0x0000000000000000-mapping.dmp

Download
memory/4164-149-0x0000000000000000-mapping.dmp

Download
memory/4188-148-0x0000000000000000-mapping.dmp

Download
memory/4444-147-0x0000000000000000-mapping.dmp

Download
memory/4992-136-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/4992-137-0x00007FF8838B0000-0x00007FF8838C0000-memory.dmp

Filesize
64KB

Download
memory/4992-138-0x00007FF8838B0000-0x00007FF8838C0000-memory.dmp

Filesize
64KB

Download
memory/4992-135-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/4992-132-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/4992-134-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/4992-133-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/4992-151-0x000001E3FBD10000-0x000001E3FBF10000-memory.dmp

Filesize
2.0MB

Download
memory/4992-152-0x000001E3FBD10000-0x000001E3FBF10000-memory.dmp

Filesize
2.0MB

Download