601eabe782aff7a264fb37953d0ff488118936bb1a3e2a23e822d4919783c86c

Analysis

max time kernel
40s
max time network
41s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/10/2022, 00:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a/A.class
Size

459B
MD5

7e84c10cf728f10bd45a5748c3fcb9b6
SHA1

7b673743e65dfb9b1fcd002978870cefbfe3d18f
SHA256

b2ef7d4b367f4f496ab15bf652944f023bfbbe931cbd854705a6861a5f457b8d
SHA512

378abd876f52774427d3d9c990276802bb5ee3072bef901268ba4200f9f6555f67458280c3fb9e2b3f8f64831eed725f55e8fe597e7cc5d16998778dc1776710

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 10 IoCs

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
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1120	AcroRd32.exe
1120	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 1204	1752	cmd.exe	27
PID 1752 wrote to memory of 1204	1752	cmd.exe	27
PID 1752 wrote to memory of 1204	1752	cmd.exe	27
PID 1204 wrote to memory of 1120	1204	rundll32.exe	28
PID 1204 wrote to memory of 1120	1204	rundll32.exe	28
PID 1204 wrote to memory of 1120	1204	rundll32.exe	28
PID 1204 wrote to memory of 1120	1204	rundll32.exe	28

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\a\A.class
1⤵
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\a\A.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1204
- - 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\a\A.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1120

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1120-82-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/1752-54-0x000007FEFBD91000-0x000007FEFBD93000-memory.dmp

Filesize
8KB

Download