73ef6cff6f7e7b9d7da3f36ead5160297c358c7dce9bef5d5ca39b91ae713e18

Analysis

max time kernel
181s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25/12/2023, 10:14

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General

Target

166979528ee9b8f18e5dbacba9d2ad83.exe
Size

935KB
MD5

166979528ee9b8f18e5dbacba9d2ad83
SHA1

d7f8165d8631895bb6ab0dbfbe6b78edc7460b5f
SHA256

73ef6cff6f7e7b9d7da3f36ead5160297c358c7dce9bef5d5ca39b91ae713e18
SHA512

84403a08e832427c1a8644664177e5e3f22311086d90317d7fb2b22738919e6c0cf7bf50b32922cfff94c7ff597a2d884725ae6e989d323517b8aa9dac99d4ea
SSDEEP

24576:9jNJijNb/H3rPMoUAqXIbBTDicNDAhITJFHHK:lNgnMHASIVTJDAhITzHHK

Score

10^/10

persistence upx

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,"	166979528ee9b8f18e5dbacba9d2ad83.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2720-0-0x0000000000400000-0x0000000000434000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	166979528ee9b8f18e5dbacba9d2ad83.exe
File created	C:\Windows\SysWOW64\ntos.exe	166979528ee9b8f18e5dbacba9d2ad83.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2720	166979528ee9b8f18e5dbacba9d2ad83.exe
2720	166979528ee9b8f18e5dbacba9d2ad83.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	166979528ee9b8f18e5dbacba9d2ad83.exe

C:\Users\Admin\AppData\Local\Temp\166979528ee9b8f18e5dbacba9d2ad83.exe
"C:\Users\Admin\AppData\Local\Temp\166979528ee9b8f18e5dbacba9d2ad83.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2720

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/2720-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2720-1-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2720-3-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2720-4-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2720-7-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2720-12-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download