584772288f279aea9113d3fc2111a5b6f69c71ef3d4421def20f8f68c671a72f

Analysis

max time kernel
149s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/12/2023, 17:10

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General

Target

07a4d7ad1daf2da53a461014d98abc38.exe
Size

256KB
MD5

07a4d7ad1daf2da53a461014d98abc38
SHA1

aaff80a567ce1eae273bd0df18eb987e7a1d2d46
SHA256

584772288f279aea9113d3fc2111a5b6f69c71ef3d4421def20f8f68c671a72f
SHA512

fd1d352610342f0b654819b767e024150e445958c182258e9d2f9abee3035da652a455ca31219d5306586ffae5c34ade6bd9810f2bb34029d9b9e5000857bf5e
SSDEEP

6144:fnMB+jKbQe6yUJuZMJGq2zj9yTYUrRFDCwymwrdCcYSA+e/lqtPLyz2fZhH5h9:/btyA36URlqJyz83

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 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\Shell = "Explorer.exe C:\\Users\\Admin\\AppData\\Roaming\\lsass.exe"	07a4d7ad1daf2da53a461014d98abc38.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Users\\Admin\\AppData\\Roaming\\lsass.exe"	lsass.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
2224	netsh.exe

Deletes itself 1 IoCs

pid	Process
1088	lsass.exe

Executes dropped EXE 1 IoCs

pid	Process
1088	lsass.exe

Loads dropped DLL 2 IoCs

pid	Process
1932	07a4d7ad1daf2da53a461014d98abc38.exe
1932	07a4d7ad1daf2da53a461014d98abc38.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\lsass.exe\""	07a4d7ad1daf2da53a461014d98abc38.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\lsass.exe\""	07a4d7ad1daf2da53a461014d98abc38.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\lsass.exe\""	lsass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\lsass.exe\""	lsass.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1932	07a4d7ad1daf2da53a461014d98abc38.exe
1088	lsass.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 2224	1932	07a4d7ad1daf2da53a461014d98abc38.exe	28
PID 1932 wrote to memory of 2224	1932	07a4d7ad1daf2da53a461014d98abc38.exe	28
PID 1932 wrote to memory of 2224	1932	07a4d7ad1daf2da53a461014d98abc38.exe	28
PID 1932 wrote to memory of 2224	1932	07a4d7ad1daf2da53a461014d98abc38.exe	28
PID 1932 wrote to memory of 1088	1932	07a4d7ad1daf2da53a461014d98abc38.exe	30
PID 1932 wrote to memory of 1088	1932	07a4d7ad1daf2da53a461014d98abc38.exe	30
PID 1932 wrote to memory of 1088	1932	07a4d7ad1daf2da53a461014d98abc38.exe	30
PID 1932 wrote to memory of 1088	1932	07a4d7ad1daf2da53a461014d98abc38.exe	30

C:\Users\Admin\AppData\Local\Temp\07a4d7ad1daf2da53a461014d98abc38.exe
"C:\Users\Admin\AppData\Local\Temp\07a4d7ad1daf2da53a461014d98abc38.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram program = C:\Users\Admin\AppData\Roaming\lsass.exename = Nero mode = ENABLE
  2⤵
  - Modifies Windows Firewall
  PID:2224
- C:\Users\Admin\AppData\Roaming\lsass.exe
  "C:\Users\Admin\AppData\Roaming\lsass.exe" /d C:\Users\Admin\AppData\Local\Temp\07a4d7ad1daf2da53a461014d98abc38.exe
  2⤵
  - Modifies WinLogon for persistence
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetWindowsHookEx
  PID:1088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\lsass.exe

Filesize
256KB

MD5
d49f8d25eb071b435af4342dae3b1064

SHA1
2cb35ee3f2d63ea2ca705e9dc74895d4b8bf5d72

SHA256
f4db467d52b224126d2b101006f79a5dc252fb8f6911bf745a4b42f9ff9db250

SHA512
149e762b057ac6ff7b2c7e81e2288225c87ec2f038b4a1fb55ced27e9bb566401a9721c5ffd55b419a9b1a5f58e944090dd23c3dca88591507b003d7acc61ef7

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads