b16ebaec337178a9f4c661d84a9998e453f4b693eab3e3fbc9bb6b957661f3c6

Analysis

max time kernel
140s
max time network
34s
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/KN0408_045 정영호.rar
Size

1.3MB
MD5

c23c17756e5ccf9543ea4fb9eb342fde
SHA1

a573680ca86c4824608d4dadb6e55ec1ff9a1f80
SHA256

ec734dcecfab5dc78f9a44045e7afd0bdfd34921b6f64d7e8e06354e1c44abe0
SHA512

13ca07d4613adc490422ae2baadc9deee3fe00f4b9510bf2b8f4babb2882050aa4f005bf912a2dcb1915b0fbe72cb5060e9cd1c4436b7ab36b700f0292996e40
SSDEEP

24576:4o9Y3jVWvGCpvf5281iOGQV6PVXNxuGelZgcKHrhzVqdAqkNgrhvFFR:U3ZWeCpvf57ix7PJHcKHred/eg9vTR

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 2 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

vlc.exe

pid process

1848 vlc.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

1848 vlc.exe
Suspicious use of FindShellTrayWindow 9 IoCs

Processes:

vlc.exe

pid process

1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
Suspicious use of SendNotifyMessage 8 IoCs

Processes:

vlc.exe

pid process

1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
1848 vlc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vlc.exe

pid process

1848 vlc.exe

pid	process
1848	vlc.exe

pid	process
1848	vlc.exe

pid	process
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe

pid	process
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe
1848	vlc.exe

pid	process
1848	vlc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1932 wrote to memory of 480	1932	cmd.exe	rundll32.exe
PID 1932 wrote to memory of 480	1932	cmd.exe	rundll32.exe
PID 1932 wrote to memory of 480	1932	cmd.exe	rundll32.exe
PID 480 wrote to memory of 1848	480	rundll32.exe	vlc.exe
PID 480 wrote to memory of 1848	480	rundll32.exe	vlc.exe
PID 480 wrote to memory of 1848	480	rundll32.exe	vlc.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\APT 37 Previous Commits 3\KN0408_045 정영호.rar"
1⤵
- Suspicious use of WriteProcessMemory
PID:1932

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\APT 37 Previous Commits 3\KN0408_045 정영호.rar
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:480

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\AppData\Local\Temp\APT 37 Previous Commits 3\KN0408_045 정영호.rar"
3⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1848

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1848-83-0x000000013FB40000-0x000000013FC38000-memory.dmp

Filesize
992KB

Download
memory/1848-84-0x000007FEFAC80000-0x000007FEFACB4000-memory.dmp

Filesize
208KB

Download
memory/1848-85-0x000007FEF62B0000-0x000007FEF6564000-memory.dmp

Filesize
2.7MB

Download
memory/1848-86-0x000007FEFB290000-0x000007FEFB2A8000-memory.dmp

Filesize
96KB

Download
memory/1848-87-0x000007FEFAC60000-0x000007FEFAC77000-memory.dmp

Filesize
92KB

Download
memory/1848-88-0x000007FEFABF0000-0x000007FEFAC01000-memory.dmp

Filesize
68KB

Download
memory/1848-89-0x000007FEFABD0000-0x000007FEFABE7000-memory.dmp

Filesize
92KB

Download
memory/1848-90-0x000007FEFAA00000-0x000007FEFAA11000-memory.dmp

Filesize
68KB

Download
memory/1848-91-0x000007FEFA9E0000-0x000007FEFA9FD000-memory.dmp

Filesize
116KB

Download
memory/1848-92-0x000007FEF6030000-0x000007FEF6230000-memory.dmp

Filesize
2.0MB

Download
memory/1848-93-0x000007FEFA9C0000-0x000007FEFA9D1000-memory.dmp

Filesize
68KB

Download
memory/1848-94-0x000007FEFA980000-0x000007FEFA9BF000-memory.dmp

Filesize
252KB

Download
memory/1848-95-0x000007FEFA950000-0x000007FEFA971000-memory.dmp

Filesize
132KB

Download
memory/1848-96-0x000007FEFA930000-0x000007FEFA948000-memory.dmp

Filesize
96KB

Download
memory/1848-97-0x000007FEF6670000-0x000007FEF6681000-memory.dmp

Filesize
68KB

Download
memory/1848-98-0x000007FEF6650000-0x000007FEF6661000-memory.dmp

Filesize
68KB

Download
memory/1848-99-0x000007FEF6630000-0x000007FEF6641000-memory.dmp

Filesize
68KB

Download
memory/1848-100-0x000007FEF6610000-0x000007FEF662B000-memory.dmp

Filesize
108KB

Download
memory/1848-101-0x000007FEF6290000-0x000007FEF62A1000-memory.dmp

Filesize
68KB

Download
memory/1848-102-0x000007FEF6270000-0x000007FEF6288000-memory.dmp

Filesize
96KB

Download
memory/1848-103-0x000007FEF6000000-0x000007FEF6030000-memory.dmp

Filesize
192KB

Download
memory/1848-104-0x000007FEF4F50000-0x000007FEF5FFB000-memory.dmp

Filesize
16.7MB

Download
memory/1848-105-0x000007FEF4EE0000-0x000007FEF4F47000-memory.dmp

Filesize
412KB

Download
memory/1848-106-0x000007FEF4E70000-0x000007FEF4EDF000-memory.dmp

Filesize
444KB

Download
memory/1848-107-0x000007FEF4E50000-0x000007FEF4E61000-memory.dmp

Filesize
68KB

Download
memory/1848-108-0x000007FEF4DF0000-0x000007FEF4E46000-memory.dmp

Filesize
344KB

Download
memory/1848-109-0x000007FEF4DC0000-0x000007FEF4DE8000-memory.dmp

Filesize
160KB

Download
memory/1848-111-0x000007FEF4D70000-0x000007FEF4D87000-memory.dmp

Filesize
92KB

Download
memory/1848-110-0x000007FEF4D90000-0x000007FEF4DB4000-memory.dmp

Filesize
144KB

Download
memory/1848-116-0x000007FEF4C90000-0x000007FEF4CA3000-memory.dmp

Filesize
76KB

Download
memory/1848-115-0x000007FEF4CB0000-0x000007FEF4CD1000-memory.dmp

Filesize
132KB

Download
memory/1848-114-0x000007FEF4CE0000-0x000007FEF4CF2000-memory.dmp

Filesize
72KB

Download
memory/1848-113-0x000007FEF4D00000-0x000007FEF4D11000-memory.dmp

Filesize
68KB

Download
memory/1848-112-0x000007FEF4D40000-0x000007FEF4D63000-memory.dmp

Filesize
140KB

Download
memory/1848-117-0x000007FEF4C70000-0x000007FEF4C82000-memory.dmp

Filesize
72KB

Download
memory/1848-118-0x000007FEF4B30000-0x000007FEF4C6B000-memory.dmp

Filesize
1.2MB

Download
memory/1848-119-0x000007FEF4B00000-0x000007FEF4B2C000-memory.dmp

Filesize
176KB

Download
memory/1848-120-0x000007FEF4940000-0x000007FEF4AF2000-memory.dmp

Filesize
1.7MB

Download
memory/1848-121-0x000007FEF48E0000-0x000007FEF493C000-memory.dmp

Filesize
368KB

Download
memory/1848-122-0x000007FEF48C0000-0x000007FEF48D1000-memory.dmp

Filesize
68KB

Download
memory/1848-123-0x000007FEF4750000-0x000007FEF47E7000-memory.dmp

Filesize
604KB

Download
memory/1848-124-0x000007FEF4730000-0x000007FEF4742000-memory.dmp

Filesize
72KB

Download
memory/1848-129-0x000007FEF4050000-0x000007FEF4061000-memory.dmp

Filesize
68KB

Download
memory/1848-128-0x000007FEF4070000-0x000007FEF4095000-memory.dmp

Filesize
148KB

Download
memory/1848-127-0x000007FEF40A0000-0x000007FEF40D5000-memory.dmp

Filesize
212KB

Download
memory/1848-126-0x000007FEF4330000-0x000007FEF4442000-memory.dmp

Filesize
1.1MB

Download
memory/1848-125-0x000007FEF4450000-0x000007FEF4681000-memory.dmp

Filesize
2.2MB

Download
memory/1848-130-0x000007FEF3FE0000-0x000007FEF4041000-memory.dmp

Filesize
388KB

Download
memory/1848-131-0x000007FEF3B50000-0x000007FEF3B61000-memory.dmp

Filesize
68KB

Download
memory/1848-132-0x000007FEF3B30000-0x000007FEF3B42000-memory.dmp

Filesize
72KB

Download
memory/1848-133-0x000007FEF3B10000-0x000007FEF3B23000-memory.dmp

Filesize
76KB

Download
memory/1848-134-0x000007FEF3A70000-0x000007FEF3B0F000-memory.dmp

Filesize
636KB

Download
memory/1848-135-0x000007FEF3A50000-0x000007FEF3A61000-memory.dmp

Filesize
68KB

Download
memory/1848-136-0x000007FEF3940000-0x000007FEF3A42000-memory.dmp

Filesize
1.0MB

Download
memory/1848-137-0x000007FEF3920000-0x000007FEF3931000-memory.dmp

Filesize
68KB

Download
memory/1848-138-0x000007FEF3900000-0x000007FEF3911000-memory.dmp

Filesize
68KB

Download
memory/1848-139-0x000007FEF3870000-0x000007FEF3881000-memory.dmp

Filesize
68KB

Download
memory/1848-140-0x000007FEF3850000-0x000007FEF3862000-memory.dmp

Filesize
72KB

Download
memory/1848-141-0x000007FEF3830000-0x000007FEF3848000-memory.dmp

Filesize
96KB

Download
memory/1848-142-0x000007FEF3810000-0x000007FEF3826000-memory.dmp

Filesize
88KB

Download
memory/1848-143-0x000007FEF37E0000-0x000007FEF3809000-memory.dmp

Filesize
164KB

Download
memory/1848-144-0x000007FEF3680000-0x000007FEF3692000-memory.dmp

Filesize
72KB

Download
memory/1848-145-0x000007FEF3660000-0x000007FEF3671000-memory.dmp

Filesize
68KB

Download
memory/1848-146-0x000007FEF3640000-0x000007FEF3651000-memory.dmp

Filesize
68KB

Download