5976a2a05d4f54baab6ec97eedc4c7b1e469685e752de1a3883c12598ea09d7f

General

Target

15̼޹˾Ȫݷֹ˾/̱.xls
Size

110KB
MD5

eda1ec628124856513d3c3ffa9fb4656
SHA1

a9ada096433ce2985f5140781dc2028defa8a194
SHA256

e7b3dc18446c856dbdcac8ac144a58d2c6096e1679cc34100d99b515715669bb
SHA512

2f5067868dd8325b36ba15ea5d1a113094241b13a188fa384469a25a4c8451aa98c97549d98268a01b10a57c2a031432380d7f317f42972779f255cefde82f2c
SSDEEP

3072:241gxv7yZmspH7+cclKisUI4ukoRWGNeWVbrzjW7ITkPkn3Vip7ehJtXwBMgI:v1gxv7yZmspH7+cclKisUI4ukoRWGNZX

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	2692	3732	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3428	3732	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1876	3732	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\15̼޹˾Ȫݷֹ˾\55685E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3732 EXCEL.EXE

Suspicious use of SetWindowsHookEx 15 IoCs

Processes:

EXCEL.EXE

pid	process
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE
3732	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3732 wrote to memory of 3556	3732	EXCEL.EXE	splwow64.exe
PID 3732 wrote to memory of 3556	3732	EXCEL.EXE	splwow64.exe
PID 3732 wrote to memory of 2692	3732	EXCEL.EXE	cmd.exe
PID 3732 wrote to memory of 2692	3732	EXCEL.EXE	cmd.exe
PID 3732 wrote to memory of 1876	3732	EXCEL.EXE	cmd.exe
PID 3732 wrote to memory of 1876	3732	EXCEL.EXE	cmd.exe
PID 3732 wrote to memory of 3428	3732	EXCEL.EXE	cmd.exe
PID 3732 wrote to memory of 3428	3732	EXCEL.EXE	cmd.exe
PID 2692 wrote to memory of 756	2692	cmd.exe	attrib.exe
PID 2692 wrote to memory of 756	2692	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

756 attrib.exe

pid	process
756	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\15̼޹˾Ȫݷֹ˾\̱.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:3732

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3556

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:2692

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:756

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:3428

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:1876

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:1828

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/756-143-0x0000000000000000-mapping.dmp

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memory/1876-141-0x0000000000000000-mapping.dmp

Download
memory/2692-140-0x0000000000000000-mapping.dmp

Download
memory/3428-142-0x0000000000000000-mapping.dmp

Download
memory/3556-139-0x0000000000000000-mapping.dmp

Download
memory/3732-132-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

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memory/3732-133-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/3732-134-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/3732-135-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/3732-136-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/3732-137-0x00007FFCA0730000-0x00007FFCA0740000-memory.dmp

Filesize
64KB

Download
memory/3732-138-0x00007FFCA0730000-0x00007FFCA0740000-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