ee30cd836329c2da9a0409babf00481912e8612435f215adc4e355bb3bc5c943

General

Target

2013年上学生住宿信息公示/旅游服务部住校生意向表.xls
Size

183KB
MD5

d0b549524a1a0918a9152e690f3d59fb
SHA1

b63bfb3f7ebfe0b10d288b0254b862cb9afdda65
SHA256

d76b03ff5e685d40a5056cb70c46a3ac9313afbe40fe04c36fb27fdd0f86bc9b
SHA512

d855eb74ba06fdee12a479e8165cda508aae9f09612c2d7f0f6e75c7c33905f19d0d09c53dea5ae19713da9d8da7293705375bfa36b84b801f6ca519368cf31b
SSDEEP

3072:xdyug0R5BVhj2jcc0lbxOKIu8JtXwric:xdyu3R5BVhE4

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	2784	3796	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4468	3796	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4640	3796	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\C9275E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3796 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\2013年上学生住宿信息公示\C9275E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3796 wrote to memory of 2784	3796	EXCEL.EXE	cmd.exe
PID 3796 wrote to memory of 2784	3796	EXCEL.EXE	cmd.exe
PID 3796 wrote to memory of 4640	3796	EXCEL.EXE	cmd.exe
PID 3796 wrote to memory of 4640	3796	EXCEL.EXE	cmd.exe
PID 3796 wrote to memory of 4468	3796	EXCEL.EXE	cmd.exe
PID 3796 wrote to memory of 4468	3796	EXCEL.EXE	cmd.exe
PID 2784 wrote to memory of 372	2784	cmd.exe	attrib.exe
PID 2784 wrote to memory of 372	2784	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

372 attrib.exe

pid	process
372	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\旅游服务部住校生意向表.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:3796

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:2784

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:372

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:4468

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:4640

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/372-142-0x0000000000000000-mapping.dmp

Download
memory/2784-139-0x0000000000000000-mapping.dmp

Download
memory/3796-135-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/3796-132-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/3796-136-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/3796-137-0x00007FF9617E0000-0x00007FF9617F0000-memory.dmp

Filesize
64KB

Download
memory/3796-138-0x00007FF9617E0000-0x00007FF9617F0000-memory.dmp

Filesize
64KB

Download
memory/3796-134-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/3796-133-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/3796-144-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/3796-146-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/3796-147-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/3796-145-0x00007FF963870000-0x00007FF963880000-memory.dmp

Filesize
64KB

Download
memory/4468-141-0x0000000000000000-mapping.dmp

Download
memory/4640-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads