3b381e14ab0778df19750b05485fcd7d7194d8f700316749e12c53c4f7426272

Analysis

max time kernel
140s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
06/01/2024, 02:37

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General

Target

450ddf88ba4c4be9473d34e0c478293f.exe
Size

505KB
MD5

450ddf88ba4c4be9473d34e0c478293f
SHA1

b9dea016f65ccad2f9e442a8987dfc512b05c856
SHA256

3b381e14ab0778df19750b05485fcd7d7194d8f700316749e12c53c4f7426272
SHA512

fa638897b8e7aa4868fbb5142003f25cb74871555b96a65b95fe338acc4735507c0bbd4cbcf68239141be8059b2990b9bf312f75f402ac6caf2c7d762aa6e92e
SSDEEP

12288:mYWwSGAtqGnKa4yitPi9OnlOCwA+GSs3C/NakvROdZ:1rSGA8GelY9OlOLYSs3C/N/5OdZ

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "userinit.exe,C:\\Windows\\system32\\ntos.exe,"	450ddf88ba4c4be9473d34e0c478293f.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	450ddf88ba4c4be9473d34e0c478293f.exe
File created	C:\Windows\SysWOW64\ntos.exe	450ddf88ba4c4be9473d34e0c478293f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2884 set thread context of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2952	450ddf88ba4c4be9473d34e0c478293f.exe
2952	450ddf88ba4c4be9473d34e0c478293f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2952	450ddf88ba4c4be9473d34e0c478293f.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17
PID 2884 wrote to memory of 2952	2884	450ddf88ba4c4be9473d34e0c478293f.exe	17

C:\Users\Admin\AppData\Local\Temp\450ddf88ba4c4be9473d34e0c478293f.exe
"C:\Users\Admin\AppData\Local\Temp\450ddf88ba4c4be9473d34e0c478293f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\450ddf88ba4c4be9473d34e0c478293f.exe
  "C:\Users\Admin\AppData\Local\Temp\450ddf88ba4c4be9473d34e0c478293f.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2884-16-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2952-18-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-21-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-27-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-24-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-23-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-19-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2952-22-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-4-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-2-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-0-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2952-30-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download