d31edb4553e040ffeafe34d81cbd073898d04ab197066e9b349c8626d420adc9

Analysis

max time kernel
32s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
01/06/2023, 17:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

unknown.octet-stream
Size

50KB
MD5

e933d69638a17b0cc5c6a94e88819523
SHA1

d6960222bb9e13bfd949041c013ee368740e83fb
SHA256

d31edb4553e040ffeafe34d81cbd073898d04ab197066e9b349c8626d420adc9
SHA512

230b31ba61c2e94c713e29b301f0cabd0de9a2e3cf222a7ee4767b527f0767a05bf6196886f3d150fd2fdc1d6133a128b013f6dcb2b39640df5e58664b6ef58b
SSDEEP

384:eM3ipYuPZCSuaWL1FDqsZZPYQ59pPiiQJZN2N6NBkNkNA:eMeaZTbpQJxa

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 13 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file\shell\open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.octet-stream	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.octet-stream\ = "octet-stream_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file\shell\edit	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file\shell\edit\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\octet-stream_auto_file\shell\open\command	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1948	NOTEPAD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
756	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 756	1204	cmd.exe	29
PID 1204 wrote to memory of 756	1204	cmd.exe	29
PID 1204 wrote to memory of 756	1204	cmd.exe	29
PID 756 wrote to memory of 1948	756	rundll32.exe	30
PID 756 wrote to memory of 1948	756	rundll32.exe	30
PID 756 wrote to memory of 1948	756	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\unknown.octet-stream
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\unknown.octet-stream
  2⤵
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:756
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\unknown.octet-stream
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1948

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads