healer | 4835bebc63e99fdc8f1004ebdd219a64bf04198b07b6d9265e9f99e377119f9b

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	arl20pW.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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	arl20pW.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	arl20pW.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	arl20pW.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	arl20pW.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	arl20pW.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	arl20pW.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"	arl20pW.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	arl20pW.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications\DisableNotifications = "1"	arl20pW.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/3120-34-0x0000000002510000-0x0000000002556000-memory.dmp	family_redline
behavioral1/memory/3120-36-0x0000000004BD0000-0x0000000004C14000-memory.dmp	family_redline
behavioral1/memory/3120-96-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-100-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-98-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-94-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-90-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-88-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-84-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-80-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-78-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-74-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-70-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-66-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-62-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-58-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-92-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-86-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-82-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-76-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-72-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-68-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-64-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-60-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-56-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-54-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-52-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-50-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-48-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-46-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-44-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-42-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-40-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-38-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline
behavioral1/memory/3120-37-0x0000000004BD0000-0x0000000004C0E000-memory.dmp	family_redline

Redline family
redline

Downloads MZ/PE file 1 IoCs

flow	pid	Process
28	6432	Process not Found

Executes dropped EXE 5 IoCs

pid	Process
4728	nTS16Bn.exe
4072	nrQ87sL.exe
3500	nvK26oP.exe
3980	arl20pW.exe
3120	bVt23EB81.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"	arl20pW.exe

Adds Run key to start application 2 TTPs 4 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\\\""	4835bebc63e99fdc8f1004ebdd219a64bf04198b07b6d9265e9f99e377119f9b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup1 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP001.TMP\\\""	nTS16Bn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup2 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP002.TMP\\\""	nrQ87sL.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup3 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP003.TMP\\\""	nvK26oP.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	4835bebc63e99fdc8f1004ebdd219a64bf04198b07b6d9265e9f99e377119f9b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nTS16Bn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nrQ87sL.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nvK26oP.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bVt23EB81.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
6312	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3980	arl20pW.exe
3980	arl20pW.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3980	arl20pW.exe
Token: SeDebugPrivilege	3120	bVt23EB81.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4208 wrote to memory of 4728	4208	4835bebc63e99fdc8f1004ebdd219a64bf04198b07b6d9265e9f99e377119f9b.exe	87
PID 4208 wrote to memory of 4728	4208	4835bebc63e99fdc8f1004ebdd219a64bf04198b07b6d9265e9f99e377119f9b.exe	87
PID 4208 wrote to memory of 4728	4208	4835bebc63e99fdc8f1004ebdd219a64bf04198b07b6d9265e9f99e377119f9b.exe	87
PID 4728 wrote to memory of 4072	4728	nTS16Bn.exe	88
PID 4728 wrote to memory of 4072	4728	nTS16Bn.exe	88
PID 4728 wrote to memory of 4072	4728	nTS16Bn.exe	88
PID 4072 wrote to memory of 3500	4072	nrQ87sL.exe	89
PID 4072 wrote to memory of 3500	4072	nrQ87sL.exe	89
PID 4072 wrote to memory of 3500	4072	nrQ87sL.exe	89
PID 3500 wrote to memory of 3980	3500	nvK26oP.exe	90
PID 3500 wrote to memory of 3980	3500	nvK26oP.exe	90
PID 3500 wrote to memory of 3120	3500	nvK26oP.exe	96
PID 3500 wrote to memory of 3120	3500	nvK26oP.exe	96
PID 3500 wrote to memory of 3120	3500	nvK26oP.exe	96

C:\Users\Admin\AppData\Local\Temp\4835bebc63e99fdc8f1004ebdd219a64bf04198b07b6d9265e9f99e377119f9b.exe
"C:\Users\Admin\AppData\Local\Temp\4835bebc63e99fdc8f1004ebdd219a64bf04198b07b6d9265e9f99e377119f9b.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4208
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\nTS16Bn.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\nTS16Bn.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4728
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\nrQ87sL.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\nrQ87sL.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4072
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\nvK26oP.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\nvK26oP.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3500
    - - C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\arl20pW.exe
        
        C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\arl20pW.exe
        5⤵
        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:3980
    - - C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\bVt23EB81.exe
        
        C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\bVt23EB81.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:3120

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODIxNjkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1MzE4NTEwMTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTY3ODA0MjEwIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:6312

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