43e47a037425c2efb68f0ba0004f7e851e8c242c5fa7ae6ade0e54fdd81e380a

Analysis

max time kernel
140s
max time network
35s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
21-03-2023 23:12

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General

Target

APT 37 Previous Commits 1/2022 후기 신-편입생 모집요강.rar
Size

77KB
MD5

17bc6298bf72fa76ad6e3f29536e2f13
SHA1

3d99696902879ae60166411b62a7d069ac6bd428
SHA256

db00c18b7226475879499581bbcd7d0a041c53cf6683ba459ff0893b978c5839
SHA512

f91458a410eaca09f580f96e7e87a9cbc74329caef0ce017d1a21d5b37a631d18be595d1baab0368c8bc9efb6238831cd55049ca0442b8166e01855bbebdda19
SSDEEP

1536:cTRt3a0zHUyJgeMeiHaXbGrjEs44K+S3phBoALic+ivW5iPGC4tFFdetBvWCT41:cja0zHUE/iHaXaEbjpoTivW5iPCGhWQE

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-1-5-21-3430344531-3702557399-3004411149-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

vlc.exe

pid process

1696 vlc.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

1696 vlc.exe
Suspicious use of FindShellTrayWindow 8 IoCs

Processes:

vlc.exe

pid process

1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
Suspicious use of SendNotifyMessage 7 IoCs

Processes:

vlc.exe

pid process

1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
1696 vlc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vlc.exe

pid process

1696 vlc.exe

pid	process
1696	vlc.exe

pid	process
1696	vlc.exe

pid	process
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe

pid	process
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe
1696	vlc.exe

pid	process
1696	vlc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1740 wrote to memory of 1628	1740	cmd.exe	rundll32.exe
PID 1740 wrote to memory of 1628	1740	cmd.exe	rundll32.exe
PID 1740 wrote to memory of 1628	1740	cmd.exe	rundll32.exe
PID 1628 wrote to memory of 1696	1628	rundll32.exe	vlc.exe
PID 1628 wrote to memory of 1696	1628	rundll32.exe	vlc.exe
PID 1628 wrote to memory of 1696	1628	rundll32.exe	vlc.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\APT 37 Previous Commits 1\2022 후기 신-편입생 모집요강.rar"
1⤵
- Suspicious use of WriteProcessMemory
PID:1740

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 1\2022 후기 신-편입생 모집요강.rar
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1628

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 1\2022 후기 신-편입생 모집요강.rar"
3⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1696

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/1696-83-0x000000013FF80000-0x0000000140078000-memory.dmp

Filesize
992KB

Download
memory/1696-84-0x000007FEFADC0000-0x000007FEFADF4000-memory.dmp

Filesize
208KB

Download
memory/1696-85-0x000007FEF65E0000-0x000007FEF6894000-memory.dmp

Filesize
2.7MB

Download
memory/1696-86-0x000007FEFBAA0000-0x000007FEFBAB8000-memory.dmp

Filesize
96KB

Download
memory/1696-87-0x000007FEFADA0000-0x000007FEFADB7000-memory.dmp

Filesize
92KB

Download
memory/1696-88-0x000007FEFAD80000-0x000007FEFAD91000-memory.dmp

Filesize
68KB

Download
memory/1696-89-0x000007FEFAD60000-0x000007FEFAD77000-memory.dmp

Filesize
92KB

Download
memory/1696-90-0x000007FEFA8A0000-0x000007FEFA8B1000-memory.dmp

Filesize
68KB

Download
memory/1696-91-0x000007FEFA880000-0x000007FEFA89D000-memory.dmp

Filesize
116KB

Download
memory/1696-92-0x000007FEFA860000-0x000007FEFA871000-memory.dmp

Filesize
68KB

Download
memory/1696-93-0x000007FEF4B50000-0x000007FEF5BFB000-memory.dmp

Filesize
16.7MB

Download
memory/1696-94-0x000007FEF63E0000-0x000007FEF65E0000-memory.dmp

Filesize
2.0MB

Download
memory/1696-95-0x000007FEFA820000-0x000007FEFA85F000-memory.dmp

Filesize
252KB

Download
memory/1696-96-0x000007FEF6B50000-0x000007FEF6B71000-memory.dmp

Filesize
132KB

Download
memory/1696-97-0x000007FEF6B30000-0x000007FEF6B48000-memory.dmp

Filesize
96KB

Download
memory/1696-98-0x000007FEF6B10000-0x000007FEF6B21000-memory.dmp

Filesize
68KB

Download
memory/1696-99-0x000007FEF6AF0000-0x000007FEF6B01000-memory.dmp

Filesize
68KB

Download
memory/1696-100-0x000007FEF6AD0000-0x000007FEF6AE1000-memory.dmp

Filesize
68KB

Download
memory/1696-101-0x000007FEF6AB0000-0x000007FEF6ACB000-memory.dmp

Filesize
108KB

Download
memory/1696-102-0x000007FEF6A90000-0x000007FEF6AA1000-memory.dmp

Filesize
68KB

Download
memory/1696-103-0x000007FEF6A70000-0x000007FEF6A88000-memory.dmp

Filesize
96KB

Download
memory/1696-104-0x000007FEF6A40000-0x000007FEF6A70000-memory.dmp

Filesize
192KB

Download
memory/1696-105-0x000007FEF69D0000-0x000007FEF6A37000-memory.dmp

Filesize
412KB

Download
memory/1696-106-0x000007FEF6370000-0x000007FEF63DF000-memory.dmp

Filesize
444KB

Download
memory/1696-107-0x000007FEF6350000-0x000007FEF6361000-memory.dmp

Filesize
68KB

Download
memory/1696-108-0x000007FEF62F0000-0x000007FEF6346000-memory.dmp

Filesize
344KB

Download
memory/1696-109-0x000007FEF62C0000-0x000007FEF62E8000-memory.dmp

Filesize
160KB

Download
memory/1696-113-0x000007FEF6220000-0x000007FEF6231000-memory.dmp

Filesize
68KB

Download
memory/1696-112-0x000007FEF6240000-0x000007FEF6263000-memory.dmp

Filesize
140KB

Download
memory/1696-111-0x000007FEF6270000-0x000007FEF6287000-memory.dmp

Filesize
92KB

Download
memory/1696-110-0x000007FEF6290000-0x000007FEF62B4000-memory.dmp

Filesize
144KB

Download
memory/1696-115-0x000007FEF61D0000-0x000007FEF61F1000-memory.dmp

Filesize
132KB

Download
memory/1696-116-0x000007FEF61B0000-0x000007FEF61C3000-memory.dmp

Filesize
76KB

Download
memory/1696-114-0x000007FEF6200000-0x000007FEF6212000-memory.dmp

Filesize
72KB

Download
memory/1696-117-0x000007FEF6190000-0x000007FEF61A2000-memory.dmp

Filesize
72KB

Download
memory/1696-118-0x000007FEF6050000-0x000007FEF618B000-memory.dmp

Filesize
1.2MB

Download
memory/1696-119-0x000007FEF6020000-0x000007FEF604C000-memory.dmp

Filesize
176KB

Download
memory/1696-120-0x000007FEF5E60000-0x000007FEF6012000-memory.dmp

Filesize
1.7MB

Download
memory/1696-121-0x000007FEF5E00000-0x000007FEF5E5C000-memory.dmp

Filesize
368KB

Download
memory/1696-122-0x000007FEF5DE0000-0x000007FEF5DF1000-memory.dmp

Filesize
68KB

Download
memory/1696-123-0x000007FEF4AB0000-0x000007FEF4B47000-memory.dmp

Filesize
604KB

Download
memory/1696-124-0x000007FEF5DC0000-0x000007FEF5DD2000-memory.dmp

Filesize
72KB

Download
memory/1696-125-0x000007FEF4870000-0x000007FEF4AA1000-memory.dmp

Filesize
2.2MB

Download
memory/1696-126-0x000007FEF4750000-0x000007FEF4862000-memory.dmp

Filesize
1.1MB

Download
memory/1696-127-0x000007FEF6FF0000-0x000007FEF7025000-memory.dmp

Filesize
212KB

Download
memory/1696-128-0x000007FEF6FC0000-0x000007FEF6FE5000-memory.dmp

Filesize
148KB

Download
memory/1696-129-0x000007FEF6FA0000-0x000007FEF6FB1000-memory.dmp

Filesize
68KB

Download
memory/1696-130-0x000007FEF5D50000-0x000007FEF5DB1000-memory.dmp

Filesize
388KB

Download
memory/1696-131-0x000007FEF6F80000-0x000007FEF6F91000-memory.dmp

Filesize
68KB

Download
memory/1696-132-0x000007FEF4730000-0x000007FEF4742000-memory.dmp

Filesize
72KB

Download
memory/1696-133-0x000007FEF4710000-0x000007FEF4723000-memory.dmp

Filesize
76KB

Download
memory/1696-134-0x000007FEF4670000-0x000007FEF470F000-memory.dmp

Filesize
636KB

Download
memory/1696-136-0x000007FEF4540000-0x000007FEF4642000-memory.dmp

Filesize
1.0MB

Download
memory/1696-135-0x000007FEF4650000-0x000007FEF4661000-memory.dmp

Filesize
68KB

Download
memory/1696-137-0x000007FEF4520000-0x000007FEF4531000-memory.dmp

Filesize
68KB

Download
memory/1696-138-0x000007FEF4500000-0x000007FEF4511000-memory.dmp

Filesize
68KB

Download
memory/1696-146-0x000007FEF4280000-0x000007FEF4291000-memory.dmp

Filesize
68KB

Download
memory/1696-145-0x000007FEF4340000-0x000007FEF4351000-memory.dmp

Filesize
68KB

Download
memory/1696-144-0x000007FEF4360000-0x000007FEF4372000-memory.dmp

Filesize
72KB

Download
memory/1696-143-0x000007FEF4380000-0x000007FEF43A9000-memory.dmp

Filesize
164KB

Download
memory/1696-142-0x000007FEF43B0000-0x000007FEF43C6000-memory.dmp

Filesize
88KB

Download
memory/1696-141-0x000007FEF43D0000-0x000007FEF43E8000-memory.dmp

Filesize
96KB

Download
memory/1696-140-0x000007FEF44C0000-0x000007FEF44D2000-memory.dmp

Filesize
72KB

Download
memory/1696-139-0x000007FEF44E0000-0x000007FEF44F1000-memory.dmp

Filesize
68KB

Download