beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf

Analysis

max time kernel
39s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 07:12

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General

Target

beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf.exe
Size

38KB
MD5

ca1bbab67de165a768fdb1cc8e95f053
SHA1

cbf9bf3a5606b460b9143966eef2a3760c1168c6
SHA256

beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf
SHA512

83089d4c474c65db7aff4cf62ba5c03c47e55928d8b69c7f348bbecf473e129d5cfb8a4bf2f73c378a7e647e117cf8a973d0c3eb4dd85fc3bab728c78d41b2e7
SSDEEP

768:VK7VQWXRUVnUtxhtFyGDyMoMlfzn3cLpdPs98:VKBQOF1yGpz6dF

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\\72c814b9.exe,"	beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf.exe

Deletes itself 1 IoCs

pid	Process
2016	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 1812 wrote to memory of 2016	1812	beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf.exe	28
PID 1812 wrote to memory of 2016	1812	beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf.exe	28
PID 1812 wrote to memory of 2016	1812	beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf.exe	28
PID 1812 wrote to memory of 2016	1812	beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf.exe	28

C:\Users\Admin\AppData\Local\Temp\beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf.exe
"C:\Users\Admin\AppData\Local\Temp\beb8330be44e907a020bb10f2f9678b50653918a62a2ca434699c28f8c7fecdf.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\BEB833~1.EXE >> NUL
  2⤵
  - Deletes itself
  PID:2016

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/1812-55-0x0000000076411000-0x0000000076413000-memory.dmp

Filesize
8KB

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memory/1812-58-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

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memory/1812-57-0x0000000000220000-0x0000000000224000-memory.dmp

Filesize
16KB

Download
memory/2016-56-0x0000000000000000-mapping.dmp

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