36aa6c6330a5b1b75eebc2c94c548a4810df78ee0662fc98209e8a2d7a512b87

Analysis

max time kernel
2s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
28-01-2023 07:19

Target

fakeobs/fake-obs.rar
Size

14.6MB
MD5

3042215ebeefb5aae8808afc228771c9
SHA1

4cd97d264155e2605880e138e33b8c50cebe24ee
SHA256

dd17f2803a4332398dcada5ce9abfa246241b14bc9c250fbada5ecf5d6e38da7
SHA512

25e64453d5224f56f46a73e8c2c64da12fe508357c0ffa3ef992b140ccd1fec30582a9f15a4030a6f11f9b653d3abc16454e3ee592bda40475efc716210f3f6c
SSDEEP

393216:SblI9gCds0xuDDAQLq5OP7E0y+gtT2ppkMkK9Gbw27T+6j:Sbl/gxqD/L+j0y+E2kMV9GbT7SE

Score

3^/10

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-1-5-21-999675638-2867687379-27515722-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 1236 wrote to memory of 940	1236	cmd.exe	rundll32.exe
PID 1236 wrote to memory of 940	1236	cmd.exe	rundll32.exe
PID 1236 wrote to memory of 940	1236	cmd.exe	rundll32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\fakeobs\fake-obs.rar
1⤵
- Suspicious use of WriteProcessMemory
PID:1236

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\fakeobs\fake-obs.rar
2⤵
- Modifies registry class
PID:940

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

memory/940-76-0x0000000000000000-mapping.dmp

Download
memory/1236-54-0x000007FEFBAE1000-0x000007FEFBAE3000-memory.dmp

Filesize
8KB

Download