healer | 0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	becX15vc12.exe

Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs

defense_evasion trojan

Modify Registry

Windows Service

Disable or Modify Tools

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	becX15vc12.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	becX15vc12.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	becX15vc12.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	becX15vc12.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	becX15vc12.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	becX15vc12.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\Microsoft\Windows Defender\Features\TamperProtection = "0"	becX15vc12.exe

Modifies Windows Defender notification settings 3 TTPs 2 IoCs

defense_evasion trojan

Windows Service

Modify Registry

Disable or Modify Tools

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications	becX15vc12.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications\DisableNotifications = "1"	becX15vc12.exe

RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine payload 35 IoCs

resource	yara_rule
behavioral1/memory/1640-18-0x0000000004B10000-0x0000000004B56000-memory.dmp	family_redline
behavioral1/memory/1640-20-0x0000000004C90000-0x0000000004CD4000-memory.dmp	family_redline
behavioral1/memory/1640-32-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-36-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-34-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-30-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-28-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-71-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-62-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-44-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-26-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-24-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-22-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-21-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-84-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-82-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-80-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-78-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-76-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-74-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-72-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-68-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-67-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-64-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-60-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-58-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-56-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-54-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-53-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-50-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-49-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-46-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-42-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-40-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline
behavioral1/memory/1640-38-0x0000000004C90000-0x0000000004CCE000-memory.dmp	family_redline

Redline family
redline

Executes dropped EXE 2 IoCs

pid	Process
4628	becX15vc12.exe
1640	cudG33PC72.exe

Windows security modification 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features\TamperProtection = "0"	becX15vc12.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cudG33PC72.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4628	becX15vc12.exe
4628	becX15vc12.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4628	becX15vc12.exe
Token: SeDebugPrivilege	1640	cudG33PC72.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 4628	4616	0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe	82
PID 4616 wrote to memory of 4628	4616	0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe	82
PID 4616 wrote to memory of 1640	4616	0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe	83
PID 4616 wrote to memory of 1640	4616	0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe	83
PID 4616 wrote to memory of 1640	4616	0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe	83

C:\Users\Admin\AppData\Local\Temp\0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe
"C:\Users\Admin\AppData\Local\Temp\0591105791c35a86e9bc01441928b8eb28a5250e4fd09e746243c38b8c362f68.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\becX15vc12.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\becX15vc12.exe
  2⤵
  - Modifies Windows Defender DisableAntiSpyware settings
  - Modifies Windows Defender Real-time Protection settings
  - Modifies Windows Defender TamperProtection settings
  - Modifies Windows Defender notification settings
  - Executes dropped EXE
  - Windows security modification
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4628
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\cudG33PC72.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\cudG33PC72.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1640

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

Create or Modify System Process

T1543

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry