7235dd0917d213bb7c11e38c88b3b0ae2bfadfa9a40fe4dc4397bd7f43421fc3

General

Target

控制价/如东县岔河镇古坝小学教学楼新建工程-安装.xls
Size

169KB
MD5

435fdab96799a0aa379643c71653dc8b
SHA1

6fd489b5795d7e5c8de6fcdacf5b41494f7c247e
SHA256

c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6
SHA512

f92c5a2279b77027aacfb30efaff8067f1c32613aa8228a8582b3bd6747de3d3a2a8b3bb7338f54ce6215dc1d65d0f8ec69bbd3313c3ca1833e7a33f56fa1148
SSDEEP

3072:01TLjmvu0Mb/edr16mK4WHbAkwJWVb95izQ7ITk9jYJtXwjv4xry:9DK6Mq

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	3588	1476	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1464	1476	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1428	1476	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1476 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE
1476	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1476 wrote to memory of 3588	1476	EXCEL.EXE	cmd.exe
PID 1476 wrote to memory of 3588	1476	EXCEL.EXE	cmd.exe
PID 1476 wrote to memory of 1428	1476	EXCEL.EXE	cmd.exe
PID 1476 wrote to memory of 1428	1476	EXCEL.EXE	cmd.exe
PID 1476 wrote to memory of 1464	1476	EXCEL.EXE	cmd.exe
PID 1476 wrote to memory of 1464	1476	EXCEL.EXE	cmd.exe
PID 3588 wrote to memory of 2496	3588	cmd.exe	attrib.exe
PID 3588 wrote to memory of 2496	3588	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

2496 attrib.exe

pid	process
2496	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\控制价\如东县岔河镇古坝小学教学楼新建工程-安装.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1476

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:3588

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:2496

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:1464

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:1428

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\127fb7d581094872b58ffa4099250b60 /t 2856 /p 1476
1⤵
PID:1540

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/1428-140-0x0000000000000000-mapping.dmp

Download
memory/1464-141-0x0000000000000000-mapping.dmp

Download
memory/1476-134-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/1476-133-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/1476-132-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/1476-135-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/1476-136-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/1476-137-0x00007FF7EBF50000-0x00007FF7EBF60000-memory.dmp

Filesize
64KB

Download
memory/1476-138-0x00007FF7EBF50000-0x00007FF7EBF60000-memory.dmp

Filesize
64KB

Download
memory/1476-142-0x00000202494FB000-0x00000202494FD000-memory.dmp

Filesize
8KB

Download
memory/2496-143-0x0000000000000000-mapping.dmp

Download
memory/3588-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads