5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336

Analysis

max time kernel
45s
max time network
50s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 18:27

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General

Target

5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe
Size

746KB
MD5

46b18fbbed9a5a768a7efcacdef86809
SHA1

144db0268932dde0d08da3e84b16d71d80d6f883
SHA256

5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336
SHA512

57abfb4e64a463a8e30f1700efc0c2e8cdee1658c2637f94d7a1cb71ce612d284a795aa87723f04585cd41ff65d69e69e2e66da31d78c62269b4a5feba23c270
SSDEEP

12288:tcXHyJTwW1ApCLUyjJc1P0CPgo9th3fB3VN4Ov4jbNoCFarzMLMDvMXgbBeMinYW:tcXHkwW1ApCLUyjJg003J1v0n4rWwvUz

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\\ntos.exe,"	5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe
File created	C:\Windows\SysWOW64\ntos.exe	5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1464	5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe
1464	5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1464	5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe

C:\Users\Admin\AppData\Local\Temp\5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe
"C:\Users\Admin\AppData\Local\Temp\5aa23b806e037e53d7aa17d3af8d277ac5e550c017d75efec87933b27f3f4336.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1464

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1464-54-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1464-56-0x0000000075B51000-0x0000000075B53000-memory.dmp

Filesize
8KB

Download
memory/1464-57-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download