b16ebaec337178a9f4c661d84a9998e453f4b693eab3e3fbc9bb6b957661f3c6

Analysis

max time kernel
139s
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/LG유플러스_이동통신_202207_이_선.rar
Size

486KB
MD5

030df9bca0a35bcd88d5897482ee226d
SHA1

1528eb1fed9d0024e7d20b28fed9df7e3ec7c465
SHA256

55e09b18d5ac5900d8662e7ac58879cfd86a3dec4534c08cdd6d17ab85008646
SHA512

e1c3c9d1f0fa687817ac485b9173b2a756b7e14ee314c1f1f654f98a6bdf4ce210c41a4f7a775066e938d7dbb5b188fcfd25e216c16e36d011420791aa624585
SSDEEP

12288:gB+jp0r0II+bBXFxtCuxZoE/j6tTbIoUf:l0r0IIOBxCeZoEkTbIoo

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

1756 vlc.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

1756 vlc.exe
Suspicious use of FindShellTrayWindow 8 IoCs

Processes:

vlc.exe

pid process

1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
Suspicious use of SendNotifyMessage 7 IoCs

Processes:

vlc.exe

pid process

1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
1756 vlc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vlc.exe

pid process

1756 vlc.exe

pid	process
1756	vlc.exe

pid	process
1756	vlc.exe

pid	process
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe

pid	process
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe
1756	vlc.exe

pid	process
1756	vlc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1740 wrote to memory of 860	1740	cmd.exe	rundll32.exe
PID 1740 wrote to memory of 860	1740	cmd.exe	rundll32.exe
PID 1740 wrote to memory of 860	1740	cmd.exe	rundll32.exe
PID 860 wrote to memory of 1756	860	rundll32.exe	vlc.exe
PID 860 wrote to memory of 1756	860	rundll32.exe	vlc.exe
PID 860 wrote to memory of 1756	860	rundll32.exe	vlc.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\APT 37 Previous Commits 3\LG유플러스_이동통신_202207_이_선.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 3\LG유플러스_이동통신_202207_이_선.rar
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:860

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\LG유플러스_이동통신_202207_이_선.rar"
3⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1756

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/1756-83-0x000000013F4B0000-0x000000013F5A8000-memory.dmp

Filesize
992KB

Download
memory/1756-84-0x000007FEFA870000-0x000007FEFA8A4000-memory.dmp

Filesize
208KB

Download
memory/1756-85-0x000007FEF6050000-0x000007FEF6304000-memory.dmp

Filesize
2.7MB

Download
memory/1756-86-0x000007FEFAEA0000-0x000007FEFAEB8000-memory.dmp

Filesize
96KB

Download
memory/1756-87-0x000007FEFA850000-0x000007FEFA867000-memory.dmp

Filesize
92KB

Download
memory/1756-88-0x000007FEFA770000-0x000007FEFA781000-memory.dmp

Filesize
68KB

Download
memory/1756-89-0x000007FEFA750000-0x000007FEFA767000-memory.dmp

Filesize
92KB

Download
memory/1756-90-0x000007FEFA560000-0x000007FEFA571000-memory.dmp

Filesize
68KB

Download
memory/1756-91-0x000007FEFA540000-0x000007FEFA55D000-memory.dmp

Filesize
116KB

Download
memory/1756-92-0x000007FEFA520000-0x000007FEFA531000-memory.dmp

Filesize
68KB

Download
memory/1756-93-0x000007FEF4E90000-0x000007FEF5F3B000-memory.dmp

Filesize
16.7MB

Download
memory/1756-94-0x000007FEF4C90000-0x000007FEF4E90000-memory.dmp

Filesize
2.0MB

Download
memory/1756-95-0x000007FEFA4E0000-0x000007FEFA51F000-memory.dmp

Filesize
252KB

Download
memory/1756-96-0x000007FEFA4B0000-0x000007FEFA4D1000-memory.dmp

Filesize
132KB

Download
memory/1756-97-0x000007FEFA490000-0x000007FEFA4A8000-memory.dmp

Filesize
96KB

Download
memory/1756-98-0x000007FEFA370000-0x000007FEFA381000-memory.dmp

Filesize
68KB

Download
memory/1756-99-0x000007FEFA350000-0x000007FEFA361000-memory.dmp

Filesize
68KB

Download
memory/1756-100-0x000007FEFA330000-0x000007FEFA341000-memory.dmp

Filesize
68KB

Download
memory/1756-101-0x000007FEF6FC0000-0x000007FEF6FDB000-memory.dmp

Filesize
108KB

Download
memory/1756-102-0x000007FEF64A0000-0x000007FEF64B1000-memory.dmp

Filesize
68KB

Download
memory/1756-105-0x000007FEF4C20000-0x000007FEF4C87000-memory.dmp

Filesize
412KB

Download
memory/1756-107-0x000007FEF6430000-0x000007FEF6441000-memory.dmp

Filesize
68KB

Download
memory/1756-109-0x000007FEF6020000-0x000007FEF6048000-memory.dmp

Filesize
160KB

Download
memory/1756-108-0x000007FEF4B50000-0x000007FEF4BA6000-memory.dmp

Filesize
344KB

Download
memory/1756-110-0x000007FEF4B20000-0x000007FEF4B44000-memory.dmp

Filesize
144KB

Download
memory/1756-106-0x000007FEF4BB0000-0x000007FEF4C1F000-memory.dmp

Filesize
444KB

Download
memory/1756-104-0x000007FEF6450000-0x000007FEF6480000-memory.dmp

Filesize
192KB

Download
memory/1756-111-0x000007FEF4B00000-0x000007FEF4B17000-memory.dmp

Filesize
92KB

Download
memory/1756-103-0x000007FEF6480000-0x000007FEF6498000-memory.dmp

Filesize
96KB

Download
memory/1756-112-0x000007FEF4AD0000-0x000007FEF4AF3000-memory.dmp

Filesize
140KB

Download
memory/1756-113-0x000007FEF4AB0000-0x000007FEF4AC1000-memory.dmp

Filesize
68KB

Download
memory/1756-117-0x000007FEF4A20000-0x000007FEF4A32000-memory.dmp

Filesize
72KB

Download
memory/1756-116-0x000007FEF4A40000-0x000007FEF4A53000-memory.dmp

Filesize
76KB

Download
memory/1756-119-0x000007FEF6A90000-0x000007FEF6ABC000-memory.dmp

Filesize
176KB

Download
memory/1756-118-0x000007FEF48C0000-0x000007FEF49FB000-memory.dmp

Filesize
1.2MB

Download
memory/1756-120-0x000007FEF4630000-0x000007FEF47E2000-memory.dmp

Filesize
1.7MB

Download
memory/1756-115-0x000007FEF4A60000-0x000007FEF4A81000-memory.dmp

Filesize
132KB

Download
memory/1756-114-0x000007FEF4A90000-0x000007FEF4AA2000-memory.dmp

Filesize
72KB

Download
memory/1756-122-0x000007FEF6A10000-0x000007FEF6A21000-memory.dmp

Filesize
68KB

Download
memory/1756-121-0x000007FEF6A30000-0x000007FEF6A8C000-memory.dmp

Filesize
368KB

Download
memory/1756-124-0x000007FEF69F0000-0x000007FEF6A02000-memory.dmp

Filesize
72KB

Download
memory/1756-123-0x000007FEF4590000-0x000007FEF4627000-memory.dmp

Filesize
604KB

Download
memory/1756-125-0x000007FEF4350000-0x000007FEF4581000-memory.dmp

Filesize
2.2MB

Download
memory/1756-126-0x000007FEF4190000-0x000007FEF42A2000-memory.dmp

Filesize
1.1MB

Download
memory/1756-127-0x000007FEF3FA0000-0x000007FEF3FD5000-memory.dmp

Filesize
212KB

Download
memory/1756-128-0x000007FEF3A90000-0x000007FEF3AB5000-memory.dmp

Filesize
148KB

Download
memory/1756-129-0x000007FEF31C0000-0x000007FEF31D1000-memory.dmp

Filesize
68KB

Download
memory/1756-130-0x000007FEF3330000-0x000007FEF3391000-memory.dmp

Filesize
388KB

Download
memory/1756-131-0x000007FEF32F0000-0x000007FEF3301000-memory.dmp

Filesize
68KB

Download
memory/1756-132-0x000007FEF32D0000-0x000007FEF32E2000-memory.dmp

Filesize
72KB

Download
memory/1756-135-0x000007FEF31F0000-0x000007FEF3201000-memory.dmp

Filesize
68KB

Download
memory/1756-136-0x000007FEF30B0000-0x000007FEF31B2000-memory.dmp

Filesize
1.0MB

Download
memory/1756-134-0x000007FEF3210000-0x000007FEF32AF000-memory.dmp

Filesize
636KB

Download
memory/1756-133-0x000007FEF32B0000-0x000007FEF32C3000-memory.dmp

Filesize
76KB

Download
memory/1756-137-0x000007FEF3090000-0x000007FEF30A1000-memory.dmp

Filesize
68KB

Download
memory/1756-138-0x000007FEF3070000-0x000007FEF3081000-memory.dmp

Filesize
68KB

Download
memory/1756-140-0x000007FEF3030000-0x000007FEF3042000-memory.dmp

Filesize
72KB

Download
memory/1756-142-0x000007FEF2FF0000-0x000007FEF3006000-memory.dmp

Filesize
88KB

Download
memory/1756-143-0x000007FEF2FC0000-0x000007FEF2FE9000-memory.dmp

Filesize
164KB

Download
memory/1756-141-0x000007FEF3010000-0x000007FEF3028000-memory.dmp

Filesize
96KB

Download
memory/1756-139-0x000007FEF3050000-0x000007FEF3061000-memory.dmp

Filesize
68KB

Download
memory/1756-144-0x000007FEF2FA0000-0x000007FEF2FB2000-memory.dmp

Filesize
72KB

Download
memory/1756-146-0x000007FEF2F60000-0x000007FEF2F71000-memory.dmp

Filesize
68KB

Download
memory/1756-145-0x000007FEF2F80000-0x000007FEF2F91000-memory.dmp

Filesize
68KB

Download