77576b3a821ce18aaa2f54c23e37ad08c71091e58736f9d6981451888781c497

Analysis

max time kernel
140s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05-03-2024 23:05

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General

Target

b5e2a9be2eff6cbe7db7d7bccccd3c84.exe
Size

48KB
MD5

b5e2a9be2eff6cbe7db7d7bccccd3c84
SHA1

c453cce5629127d93d9892b61c131aa8240028f7
SHA256

77576b3a821ce18aaa2f54c23e37ad08c71091e58736f9d6981451888781c497
SHA512

02192130d5dabf28c56e3d1539f24eb6efe447d806d4e528bc6b13a5dcbe143484195a14c16c8bf9cfee79825ed0f363618a6a5a5d5d1643a79750f76604a131
SSDEEP

1536:kIuPdqIchWBSNpmc4WnnAzi5FEB4IBed:Wd16iSNp8G7EB4IBed

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,"	b5e2a9be2eff6cbe7db7d7bccccd3c84.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	b5e2a9be2eff6cbe7db7d7bccccd3c84.exe
File created	C:\Windows\SysWOW64\ntos.exe	b5e2a9be2eff6cbe7db7d7bccccd3c84.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2860	b5e2a9be2eff6cbe7db7d7bccccd3c84.exe
2860	b5e2a9be2eff6cbe7db7d7bccccd3c84.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	b5e2a9be2eff6cbe7db7d7bccccd3c84.exe

C:\Users\Admin\AppData\Local\Temp\b5e2a9be2eff6cbe7db7d7bccccd3c84.exe
"C:\Users\Admin\AppData\Local\Temp\b5e2a9be2eff6cbe7db7d7bccccd3c84.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2860

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/2860-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2860-5-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2860-4-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2860-1-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download