ec771427b49936dedbd2f9537d674403b1dc1f412a975aa28a7a7ca2c58bf60a

Analysis

max time kernel
140s
max time network
119s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
07-01-2024 00:21

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General

Target

4789fbb1fed43018a41ec55db5eb570c.exe
Size

55KB
MD5

4789fbb1fed43018a41ec55db5eb570c
SHA1

0b652bca4f3f054ead04b56609df897c0137fb03
SHA256

ec771427b49936dedbd2f9537d674403b1dc1f412a975aa28a7a7ca2c58bf60a
SHA512

876a52b1981262481fe4704be8e8b17d610d8d88b14adc1be330d5b10eb76d91b07109575b2750c0f620f95d608fe628b6ab1c3e0a49cb23ff2f2869b3e2a2f0
SSDEEP

1536:tYZANK7y1nMmvgPNB+MeLhJlk+fVWGkzVUYE:qwKmVxoPNB+3LXq+fVWGkLE

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,"	4789fbb1fed43018a41ec55db5eb570c.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	4789fbb1fed43018a41ec55db5eb570c.exe
File created	C:\Windows\SysWOW64\ntos.exe	4789fbb1fed43018a41ec55db5eb570c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 816 set thread context of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1244	4789fbb1fed43018a41ec55db5eb570c.exe
1244	4789fbb1fed43018a41ec55db5eb570c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1244	4789fbb1fed43018a41ec55db5eb570c.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16
PID 816 wrote to memory of 1244	816	4789fbb1fed43018a41ec55db5eb570c.exe	16

C:\Users\Admin\AppData\Local\Temp\4789fbb1fed43018a41ec55db5eb570c.exe
"C:\Users\Admin\AppData\Local\Temp\4789fbb1fed43018a41ec55db5eb570c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:816
- C:\Users\Admin\AppData\Local\Temp\4789fbb1fed43018a41ec55db5eb570c.exe
  "C:\Users\Admin\AppData\Local\Temp\4789fbb1fed43018a41ec55db5eb570c.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1244

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/816-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1244-20-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-7-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-18-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-24-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-21-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-10-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-17-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-12-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1244-4-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-2-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1244-0-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download