6abb0e40f89bd46dfef4ee1dc3ce5477f77169da8887edb09beddfa1ef3ee6c9

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
12/11/2023, 16:18

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General

Target

linux4.4/drivers/mtd/mtdchar.c
Size

26KB
MD5

42bdb63aea591838d010efc0d57847cf
SHA1

c32cd1df008607c57ac2ddc5a009fb2d0f1e0651
SHA256

846eb60cc055f10620291bc986736832b799d6c71984f7b9a59d8086be726a47
SHA512

864b96811e7cd49b20c9703ad69dccbed58e4b144cf9917658ac4b06328709597f0e5b882179b0718a8fc4f7f01b9beaf0c55c85d521c36bac86e6e5d9db1729
SSDEEP

768:EJbWr+Kz8KgusAv8KguEeBgJKFFOIks7ORk9xti4DE4CdMOutiy:Qto8KgdA8KguEeBgJKXOIk2bti4jCdpi

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 12 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file\shell\edit	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file\shell\edit\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\.c	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\.c\ = "c_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\c_auto_file\shell\open	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2768	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2756	2244	cmd.exe	29
PID 2244 wrote to memory of 2756	2244	cmd.exe	29
PID 2244 wrote to memory of 2756	2244	cmd.exe	29
PID 2756 wrote to memory of 2768	2756	rundll32.exe	30
PID 2756 wrote to memory of 2768	2756	rundll32.exe	30
PID 2756 wrote to memory of 2768	2756	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\linux4.4\drivers\mtd\mtdchar.c
1⤵
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\linux4.4\drivers\mtd\mtdchar.c
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2756
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\linux4.4\drivers\mtd\mtdchar.c
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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 v15

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