cbf710b8e6b29f0904e289a9b9a895548a2d7c7af5a3145c8279b97a69a09276

Analysis

max time kernel
150s
max time network
30s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
22/04/2023, 22:24

Target

README.win
Size

79KB
MD5

0026aaff9e6410e2e2f459d02a44994c
SHA1

27a65af1430bbd0ae419a99fedfc460aafdb8920
SHA256

f2470b97f41b6b1d4c00ca129c0fbed0ac415be479f20167b59904f77e49f653
SHA512

dcc5c07b360621a2a111eee388c8d8e8a575885934ba5be37295ba65e1de635e535904d330c6cdb43df1abf18344ba930284e0d1c4c8457ae06865cf4a5f6629
SSDEEP

1536:UnNQpEx7stWfxOnL7IkOJATpYjkMPj40UbDsCkmP7:Unus7stOOn4JAGjkMPj6Ds4P7

Score

3^/10

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\win_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.win	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\win_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\win_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\win_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\win_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\win_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.win\ = "win_auto_file"	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 468	1972	cmd.exe	29
PID 1972 wrote to memory of 468	1972	cmd.exe	29
PID 1972 wrote to memory of 468	1972	cmd.exe	29
PID 468 wrote to memory of 812	468	rundll32.exe	30
PID 468 wrote to memory of 812	468	rundll32.exe	30
PID 468 wrote to memory of 812	468	rundll32.exe	30
PID 468 wrote to memory of 812	468	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\README.win
1⤵
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\README.win
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:468
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\README.win"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:812

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact