eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917

Analysis

max time kernel
31s
max time network
48s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19-09-2022 16:18

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General

Target

eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917.exe
Size

35KB
MD5

a1eb1da198c64561928ac9768062e89d
SHA1

28e54ef22304e4aaeb1890378b10b908f0b65589
SHA256

eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917
SHA512

3931b8499fe8ff8a06acc767012717a0de7d28f9376ea504ba649d647a48941c643c13cb3fa2b5d24ce38b56527a1841e3f98a44964a07b35b63bca92539265b
SSDEEP

768:DFdqs8h8l4lXnSsAUc1vsfUfKF6B6Qv32gPl2sCSYKltHq/dDN2H:DDq9dl7cacC68QegPl2QYKlZyDoH

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "userinit.exe,C:\\Windows\\system32\\4c4d3abd.exe,"	eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917.exe

Deletes itself 1 IoCs

pid	Process
1360	cmd.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 1360	1448	eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917.exe	28
PID 1448 wrote to memory of 1360	1448	eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917.exe	28
PID 1448 wrote to memory of 1360	1448	eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917.exe	28
PID 1448 wrote to memory of 1360	1448	eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917.exe	28

C:\Users\Admin\AppData\Local\Temp\eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917.exe
"C:\Users\Admin\AppData\Local\Temp\eae9e2489b7741fb7db4ac1012db56f92cf9b9cc10f513b19e82589912d28917.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\EAE9E2~1.EXE >> NUL
  2⤵
  - Deletes itself
  PID:1360

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1448-55-0x00000000764D1000-0x00000000764D3000-memory.dmp

Filesize
8KB

Download
memory/1448-58-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1448-57-0x0000000000220000-0x0000000000223000-memory.dmp

Filesize
12KB

Download