18f7857e3bb5f9f830917c9073d3c339bf7b3e14fcd3edfdca976287f41536c6

Analysis

max time kernel
230s
max time network
336s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 19:10

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General

Target

updates.pl
Size

31KB
MD5

8293029682e7c6521e4a449a818975cf
SHA1

8d9c57f91c21c23bccedc581f25e5863c445ac4d
SHA256

07157a15adb84c3ef39a3d25145bee7c17cf6ff620e19a31a7a2e30ca22ffeea
SHA512

50f5e69be67cf8574366d47f7dd463410d1a9887dae014d52b31138a253b24950c8787d2ee7bc09b3f37e06119910e2b55ecc5f48ae9eb8a17fab403fcef7cd7
SSDEEP

384:TVemswyLcIZfkH70M9lsSu5se4KzGJewHa/FF/lsheeRFxfINOP:TVxsbLcQwAylEme4KqI/FxShdyc

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 13 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file\shell\edit\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\.pl	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\.pl\ = "pl_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file\shell\edit	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pl_auto_file\shell\open	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

1472 NOTEPAD.EXE

pid	process
1472	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 560 wrote to memory of 1364	560	cmd.exe	rundll32.exe
PID 560 wrote to memory of 1364	560	cmd.exe	rundll32.exe
PID 560 wrote to memory of 1364	560	cmd.exe	rundll32.exe
PID 1364 wrote to memory of 1472	1364	rundll32.exe	NOTEPAD.EXE
PID 1364 wrote to memory of 1472	1364	rundll32.exe	NOTEPAD.EXE
PID 1364 wrote to memory of 1472	1364	rundll32.exe	NOTEPAD.EXE

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\updates.pl
1⤵
- Suspicious use of WriteProcessMemory
PID:560

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\updates.pl
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1364

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\updates.pl
3⤵
- Opens file in notepad (likely ransom note)
PID:1472

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/560-54-0x000007FEFBB31000-0x000007FEFBB33000-memory.dmp

Filesize
8KB

Download
memory/1364-81-0x0000000000000000-mapping.dmp

Download
memory/1472-86-0x0000000000000000-mapping.dmp

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