ee30cd836329c2da9a0409babf00481912e8612435f215adc4e355bb3bc5c943

General

Target

2013年上学生住宿信息公示/交通运输部住校生意向表.xls
Size

246KB
MD5

c591ed07be8898f0ab488c72ea660a97
SHA1

e57f6fab9a16e3646d428e47e21e4decf4dd9640
SHA256

77e581f9d9191f8951bd420cb8fafed722f3372ff2d8769e664b8426052ae34a
SHA512

fc9efce0ea4ca2b4c5e151b6be812b9bacafe0e894904a8187b6d45249a409b9af5e059d18d469b271bee7e7546be61d881ba631ce850dee5f069c2c0e7aa82c
SSDEEP

3072:16d9cOrhYxL6R4X29mBHb1AURKf7wWVbrE7ITk9SAJtXwY4NZ:16d9cOViHpbRKf7Ww

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	4428	4784	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1868	4784	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3820	4784	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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\2013年上学生住宿信息公示\B3085E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4784 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\2013年上学生住宿信息公示\B3085E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE
4784	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4784 wrote to memory of 4428	4784	EXCEL.EXE	cmd.exe
PID 4784 wrote to memory of 4428	4784	EXCEL.EXE	cmd.exe
PID 4784 wrote to memory of 1868	4784	EXCEL.EXE	cmd.exe
PID 4784 wrote to memory of 1868	4784	EXCEL.EXE	cmd.exe
PID 4784 wrote to memory of 3820	4784	EXCEL.EXE	cmd.exe
PID 4784 wrote to memory of 3820	4784	EXCEL.EXE	cmd.exe
PID 4428 wrote to memory of 1808	4428	cmd.exe	attrib.exe
PID 4428 wrote to memory of 1808	4428	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1808 attrib.exe

pid	process
1808	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\2013年上学生住宿信息公示\交通运输部住校生意向表.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:4784

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:4428

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1808

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:1868

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:3820

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

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Downloads

memory/1808-142-0x0000000000000000-mapping.dmp

Download
memory/1868-140-0x0000000000000000-mapping.dmp

Download
memory/3820-141-0x0000000000000000-mapping.dmp

Download
memory/4428-139-0x0000000000000000-mapping.dmp

Download
memory/4784-135-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download
memory/4784-137-0x00007FFC63830000-0x00007FFC63840000-memory.dmp

Filesize
64KB

Download
memory/4784-138-0x00007FFC63830000-0x00007FFC63840000-memory.dmp

Filesize
64KB

Download
memory/4784-136-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download
memory/4784-132-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download
memory/4784-134-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download
memory/4784-133-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download
memory/4784-144-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download
memory/4784-145-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download
memory/4784-147-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download
memory/4784-146-0x00007FFC65890000-0x00007FFC658A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads