ee30cd836329c2da9a0409babf00481912e8612435f215adc4e355bb3bc5c943

General

Target

2013年上学生住宿信息公示/商务信息部住校生意向表.xls
Size

238KB
MD5

7c24257cb1f19d9fe394badacb3042c3
SHA1

99010bb14c652fd52ddb6741af088db8a235664f
SHA256

a9cd9a4b06a19b06652322bfffdced032c3f0a62febdb843710eeb1ac429e575
SHA512

c7fbd0ed516c8f1f491d49f660426d6e8d3ffee8ec28d176152db6a4fe68b796a7db0685de3a026756a8741083904113800c333207ec92835dd0f456f74daa34
SSDEEP

3072:DMTfveRF1qINGfr42jcc0lbxOKtAJtXw34:DMTfveRF1qYcV

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	4032	3972	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3860	3972	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4152	3972	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\19085E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3972 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\2013年上学生住宿信息公示\19085E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3972 wrote to memory of 4032	3972	EXCEL.EXE	cmd.exe
PID 3972 wrote to memory of 4032	3972	EXCEL.EXE	cmd.exe
PID 3972 wrote to memory of 3860	3972	EXCEL.EXE	cmd.exe
PID 3972 wrote to memory of 3860	3972	EXCEL.EXE	cmd.exe
PID 3972 wrote to memory of 4152	3972	EXCEL.EXE	cmd.exe
PID 3972 wrote to memory of 4152	3972	EXCEL.EXE	cmd.exe
PID 4032 wrote to memory of 5032	4032	cmd.exe	attrib.exe
PID 4032 wrote to memory of 5032	4032	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

5032 attrib.exe

pid	process
5032	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\商务信息部住校生意向表.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:3972

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:4032

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:5032

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:3860

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:4152

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/3860-140-0x0000000000000000-mapping.dmp

Download
memory/3972-138-0x00007FFD188D0000-0x00007FFD188E0000-memory.dmp

Filesize
64KB

Download
memory/3972-134-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/3972-135-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/3972-136-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/3972-137-0x00007FFD188D0000-0x00007FFD188E0000-memory.dmp

Filesize
64KB

Download
memory/3972-132-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/3972-147-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/3972-133-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/3972-145-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/3972-146-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/3972-144-0x00007FFD1B230000-0x00007FFD1B240000-memory.dmp

Filesize
64KB

Download
memory/4032-139-0x0000000000000000-mapping.dmp

Download
memory/4152-141-0x0000000000000000-mapping.dmp

Download
memory/5032-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads