a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b

Analysis

max time kernel
44s
max time network
50s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
24-11-2022 05:31

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General

Target

a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe
Size

180KB
MD5

387b00428d6a7d8c3a4f7a6c6de2bfcb
SHA1

d8b20edf5fd13249d15c0b5a6210a0601fd33652
SHA256

a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b
SHA512

6599c745b9a90aaf86628c032de5fc55c327be9b95731779ddd723348ee164b879c30f1b9387a2d57f49fd33d17008d64d8e266d6d73b85dec15ea7ee343051c
SSDEEP

3072:7ofKHb2VlNw6zZvQB1aH7lVRwFizDC/exZBVD0S2H8ju1:7ofmbENfznH7lnblz7gb6u1

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "userinit.exe,C:\\Windows\\system32\\ntos.exe,"	a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

Drops file in System32 directory 2 IoCs

Processes:

a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe
File created	C:\Windows\SysWOW64\ntos.exe	a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

pid	process
2004	a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe
2004	a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

description pid process

Token: SeDebugPrivilege 2004 a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

description	pid	process
Token: SeDebugPrivilege	2004	a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe

C:\Users\Admin\AppData\Local\Temp\a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe
"C:\Users\Admin\AppData\Local\Temp\a50e9527c9919d115ada3a6337f854cfd77384296e63fb64fbb358a71d20a31b.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2004

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/2004-54-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

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memory/2004-55-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

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