0a77c980c1b6ad85ffb3f1e8e814f96e09d5033d82dce7ca2062b992372c85e6

Analysis

max time kernel
182s
max time network
194s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 19:26

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General

Target

答辩16日第10组.xls
Size

102KB
MD5

740ddd0b5dfd217121428c94d1e7960f
SHA1

5662dfeb414bacc6e47de591942a8a05f9ff20da
SHA256

4694fd27bdbf5b240daf20026ddd2d12a9ddaa3dd2b8b5a60d2fe48da16865f3
SHA512

8e2468bb5a1e78e20603cccd5eac3c960f13189e723310f52da6aa5cb2981459b03c5ca6e02f4f0b94fef618cc62acc02c0117451705739f76d81825d59c0f89
SSDEEP

1536:sFFFpvkkj5pWVbrzlv7ITkR62lGM88wcJtXwRvM2M/MHUd+:SWVbrzh7ITk9tjDJtXwS5k0d+

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	2296	1112	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4532	1112	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1428	1112	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\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\99C75E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1112 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\99C75E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE
1112	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1112 wrote to memory of 2296	1112	EXCEL.EXE	cmd.exe
PID 1112 wrote to memory of 2296	1112	EXCEL.EXE	cmd.exe
PID 1112 wrote to memory of 4532	1112	EXCEL.EXE	cmd.exe
PID 1112 wrote to memory of 4532	1112	EXCEL.EXE	cmd.exe
PID 1112 wrote to memory of 1428	1112	EXCEL.EXE	cmd.exe
PID 1112 wrote to memory of 1428	1112	EXCEL.EXE	cmd.exe
PID 2296 wrote to memory of 4596	2296	cmd.exe	attrib.exe
PID 2296 wrote to memory of 4596	2296	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4596 attrib.exe

pid	process
4596	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10组.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1112

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:2296

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4596

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:4532

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:1428

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

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Downloads

memory/1112-138-0x00007FF80F3E0000-0x00007FF80F3F0000-memory.dmp

Filesize
64KB

Download
memory/1112-145-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1112-133-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1112-135-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1112-136-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1112-137-0x00007FF80F3E0000-0x00007FF80F3F0000-memory.dmp

Filesize
64KB

Download
memory/1112-134-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1112-147-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1112-132-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1112-146-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1112-144-0x00007FF811CF0000-0x00007FF811D00000-memory.dmp

Filesize
64KB

Download
memory/1428-141-0x0000000000000000-mapping.dmp

Download
memory/2296-139-0x0000000000000000-mapping.dmp

Download
memory/4532-140-0x0000000000000000-mapping.dmp

Download
memory/4596-142-0x0000000000000000-mapping.dmp

Download