8441f92e8460a7b2ed37ee96affe547a65589b2e8e980a18a6b08b786b48465d

Analysis

max time kernel
5s
max time network
9s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-11-2024 17:28

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Reason

Machine shutdown

Report Analysis Logs

General

Target

OfficeActivator.exe
Size

87KB
MD5

1b4e57be75e855e54e84f55874782d4b
SHA1

f5f17bae63faad537233bb38647940bda7340b2c
SHA256

8441f92e8460a7b2ed37ee96affe547a65589b2e8e980a18a6b08b786b48465d
SHA512

076245019b439583d4a45e46e6c836a2724270aba0a6e1b04e20c4157bdb32533045ee118c22a013e6f7127f1d34eb8b82738156dd152dae7c4ef9da1cf39da9
SSDEEP

1536:LcW4lAJGGnzjoih/NDh/NDuk+XkGAK/hztXcag+PlbBfkWIyvZrw281r5XsmCZEq:4WNGszjoih/NDh/NDuk+XkGAK/hztXcE

Score

10^/10

defense_evasion evasion persistence ransomware trojan

Malware Config

Signatures

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral1/memory/2676-1-0x0000000000070000-0x000000000008A000-memory.dmp	disable_win_def

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\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Users\\Admin\\AppData\\Local\\Temp\\OfficeActivator.exe,C:\\Windows\\system32\\userinit.exe"	reg.exe

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	OfficeActivator.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	OfficeActivator.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	OfficeActivator.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	OfficeActivator.exe

Modifies boot configuration data using bcdedit 1 TTPs 1 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2792	bcdedit.exe

Impair Defenses: Safe Mode Boot 1 TTPs 1 IoCs

defense_evasion

Safe Mode Boot

T1562.009

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\WinDefend	reg.exe

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features	OfficeActivator.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2732	reg.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe
2676	OfficeActivator.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2676	OfficeActivator.exe
Token: SeShutdownPrivilege	2112	shutdown.exe
Token: SeRemoteShutdownPrivilege	2112	shutdown.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2732	2676	OfficeActivator.exe	30
PID 2676 wrote to memory of 2732	2676	OfficeActivator.exe	30
PID 2676 wrote to memory of 2732	2676	OfficeActivator.exe	30
PID 2676 wrote to memory of 2792	2676	OfficeActivator.exe	32
PID 2676 wrote to memory of 2792	2676	OfficeActivator.exe	32
PID 2676 wrote to memory of 2792	2676	OfficeActivator.exe	32
PID 2676 wrote to memory of 2784	2676	OfficeActivator.exe	34
PID 2676 wrote to memory of 2784	2676	OfficeActivator.exe	34
PID 2676 wrote to memory of 2784	2676	OfficeActivator.exe	34
PID 2676 wrote to memory of 2708	2676	OfficeActivator.exe	36
PID 2676 wrote to memory of 2708	2676	OfficeActivator.exe	36
PID 2676 wrote to memory of 2708	2676	OfficeActivator.exe	36
PID 2676 wrote to memory of 2112	2676	OfficeActivator.exe	38
PID 2676 wrote to memory of 2112	2676	OfficeActivator.exe	38
PID 2676 wrote to memory of 2112	2676	OfficeActivator.exe	38
PID 2708 wrote to memory of 2380	2708	net.exe	40
PID 2708 wrote to memory of 2380	2708	net.exe	40
PID 2708 wrote to memory of 2380	2708	net.exe	40
PID 2676 wrote to memory of 2584	2676	OfficeActivator.exe	42
PID 2676 wrote to memory of 2584	2676	OfficeActivator.exe	42
PID 2676 wrote to memory of 2584	2676	OfficeActivator.exe	42

C:\Users\Admin\AppData\Local\Temp\OfficeActivator.exe
"C:\Users\Admin\AppData\Local\Temp\OfficeActivator.exe"
1⤵
- Modifies Windows Defender Real-time Protection settings
- Windows security modification
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Windows\system32\reg.exe
  "reg.exe" delete HKLM\System\CurrentControlSet\Control\SafeBoot\Minimal\WinDefend /f
  2⤵
  - Impair Defenses: Safe Mode Boot
  - Modifies registry key
  PID:2732
- C:\Windows\system32\bcdedit.exe
  "bcdedit.exe" /set {default} safeboot network
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:2792
- C:\Windows\system32\reg.exe
  "reg.exe" add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Userinit /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\OfficeActivator.exe","C:\Windows\system32\userinit.exe" /f
  2⤵
  - Modifies WinLogon for persistence
  PID:2784
- C:\Windows\system32\net.exe
  "net.exe" user Admin ""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user Admin ""
    3⤵
    PID:2380
- C:\Windows\system32\shutdown.exe
  "shutdown.exe" /r /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2112
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  PID:2584

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2920

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:2456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Safe Mode Boot

T1562.009

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

memory/2584-7-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2676-0-0x000007FEF5063000-0x000007FEF5064000-memory.dmp

Filesize
4KB

Download
memory/2676-1-0x0000000000070000-0x000000000008A000-memory.dmp

Filesize
104KB

Download
memory/2676-2-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2676-8-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads