redline | 7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1

Modify Existing Service

T1031

Disabling Security Tools

T1089

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	k8407971.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	k8407971.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	k8407971.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	k8407971.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	k8407971.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	k8407971.exe

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

RedLine payload 17 IoCs

resource	yara_rule
behavioral1/memory/2244-228-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-229-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-231-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-233-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-235-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-237-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-239-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-241-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-243-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-245-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-247-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-249-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-251-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-253-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-255-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-257-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline
behavioral1/memory/2244-259-0x0000000002540000-0x000000000257C000-memory.dmp	family_redline

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	oneetx.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	m6716618.exe

Executes dropped EXE 14 IoCs

pid	Process
4768	y4655406.exe
4288	y7593620.exe
3372	k8407971.exe
348	l2813932.exe
4940	m6716618.exe
2756	m6716618.exe
2244	n7576390.exe
5048	oneetx.exe
5044	oneetx.exe
1244	oneetx.exe
3868	oneetx.exe
3192	oneetx.exe
3316	oneetx.exe
5100	oneetx.exe

Loads dropped DLL 1 IoCs

pid	Process
4032	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	k8407971.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	k8407971.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe
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\\\""	7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	y4655406.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\\\""	y4655406.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	y7593620.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\\\""	y7593620.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{AE35756E-E817-46B2-81B1-B6B60E813DA6}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{D48171E5-3B06-42F0-BAC0-71EE85F131FD}.catalogItem	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4940 set thread context of 2756	4940	m6716618.exe	91
PID 5048 set thread context of 5044	5048	oneetx.exe	94
PID 1244 set thread context of 3868	1244	oneetx.exe	107
PID 3192 set thread context of 5100	3192	oneetx.exe	123

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4984	3868	WerFault.exe	107

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

pid	Process
2728	schtasks.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3372	k8407971.exe
3372	k8407971.exe
348	l2813932.exe
348	l2813932.exe
2244	n7576390.exe
2244	n7576390.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3372	k8407971.exe
Token: SeDebugPrivilege	348	l2813932.exe
Token: SeDebugPrivilege	4940	m6716618.exe
Token: SeDebugPrivilege	2244	n7576390.exe
Token: SeDebugPrivilege	5048	oneetx.exe
Token: SeDebugPrivilege	1244	oneetx.exe
Token: SeDebugPrivilege	3192	oneetx.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2756	m6716618.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3868	oneetx.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 4768	2092	7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe	82
PID 2092 wrote to memory of 4768	2092	7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe	82
PID 2092 wrote to memory of 4768	2092	7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe	82
PID 4768 wrote to memory of 4288	4768	y4655406.exe	83
PID 4768 wrote to memory of 4288	4768	y4655406.exe	83
PID 4768 wrote to memory of 4288	4768	y4655406.exe	83
PID 4288 wrote to memory of 3372	4288	y7593620.exe	84
PID 4288 wrote to memory of 3372	4288	y7593620.exe	84
PID 4288 wrote to memory of 3372	4288	y7593620.exe	84
PID 4288 wrote to memory of 348	4288	y7593620.exe	88
PID 4288 wrote to memory of 348	4288	y7593620.exe	88
PID 4288 wrote to memory of 348	4288	y7593620.exe	88
PID 4768 wrote to memory of 4940	4768	y4655406.exe	90
PID 4768 wrote to memory of 4940	4768	y4655406.exe	90
PID 4768 wrote to memory of 4940	4768	y4655406.exe	90
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 4940 wrote to memory of 2756	4940	m6716618.exe	91
PID 2092 wrote to memory of 2244	2092	7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe	92
PID 2092 wrote to memory of 2244	2092	7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe	92
PID 2092 wrote to memory of 2244	2092	7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe	92
PID 2756 wrote to memory of 5048	2756	m6716618.exe	93
PID 2756 wrote to memory of 5048	2756	m6716618.exe	93
PID 2756 wrote to memory of 5048	2756	m6716618.exe	93
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5048 wrote to memory of 5044	5048	oneetx.exe	94
PID 5044 wrote to memory of 2728	5044	oneetx.exe	96
PID 5044 wrote to memory of 2728	5044	oneetx.exe	96
PID 5044 wrote to memory of 2728	5044	oneetx.exe	96
PID 5044 wrote to memory of 4212	5044	oneetx.exe	98
PID 5044 wrote to memory of 4212	5044	oneetx.exe	98
PID 5044 wrote to memory of 4212	5044	oneetx.exe	98
PID 4212 wrote to memory of 1556	4212	cmd.exe	100
PID 4212 wrote to memory of 1556	4212	cmd.exe	100
PID 4212 wrote to memory of 1556	4212	cmd.exe	100
PID 4212 wrote to memory of 1200	4212	cmd.exe	101
PID 4212 wrote to memory of 1200	4212	cmd.exe	101
PID 4212 wrote to memory of 1200	4212	cmd.exe	101
PID 4212 wrote to memory of 4524	4212	cmd.exe	102
PID 4212 wrote to memory of 4524	4212	cmd.exe	102
PID 4212 wrote to memory of 4524	4212	cmd.exe	102
PID 4212 wrote to memory of 4760	4212	cmd.exe	103
PID 4212 wrote to memory of 4760	4212	cmd.exe	103
PID 4212 wrote to memory of 4760	4212	cmd.exe	103
PID 4212 wrote to memory of 680	4212	cmd.exe	104
PID 4212 wrote to memory of 680	4212	cmd.exe	104
PID 4212 wrote to memory of 680	4212	cmd.exe	104
PID 4212 wrote to memory of 3296	4212	cmd.exe	105
PID 4212 wrote to memory of 3296	4212	cmd.exe	105

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe
"C:\Users\Admin\AppData\Local\Temp\7509f27b6440f358521c70eb260e3ccf8cf5252ce609d7bb534dfd68599b4ad1.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\y4655406.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\y4655406.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4768
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\y7593620.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\y7593620.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:4288
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\k8407971.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\k8407971.exe
      4⤵
      Modifies Windows Defender Real-time Protection settings
      Executes dropped EXE
      Windows security modification
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3372
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\l2813932.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\l2813932.exe
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:348
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\m6716618.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\m6716618.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4940
  - - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\m6716618.exe
      C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\m6716618.exe
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Suspicious use of FindShellTrayWindow
      Suspicious use of WriteProcessMemory
      PID:2756
    - - C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
        
        "C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:5048
      - C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
        
        C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
        6⤵
        Checks computer location settings
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:5044
        
        C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN oneetx.exe /TR "C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe" /F
        7⤵
        Creates scheduled task(s)
        
        PID:2728
        
        C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /k echo Y|CACLS "oneetx.exe" /P "Admin:N"&&CACLS "oneetx.exe" /P "Admin:R" /E&&echo Y|CACLS "..\c3912af058" /P "Admin:N"&&CACLS "..\c3912af058" /P "Admin:R" /E&&Exit
        7⤵
        Suspicious use of WriteProcessMemory
        
        PID:4212
        
        C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo Y"
        8⤵
        
        PID:1556
        
        C:\Windows\SysWOW64\cacls.exe
        
        CACLS "oneetx.exe" /P "Admin:N"
        8⤵
        
        PID:1200
        
        C:\Windows\SysWOW64\cacls.exe
        
        CACLS "oneetx.exe" /P "Admin:R" /E
        8⤵
        
        PID:4524
        
        C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo Y"
        8⤵
        
        PID:4760
        
        C:\Windows\SysWOW64\cacls.exe
        
        CACLS "..\c3912af058" /P "Admin:N"
        8⤵
        
        PID:680
        
        C:\Windows\SysWOW64\cacls.exe
        
        CACLS "..\c3912af058" /P "Admin:R" /E
        8⤵
        
        PID:3296
        
        C:\Windows\SysWOW64\rundll32.exe
        
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll, Main
        7⤵
        Loads dropped DLL
        
        PID:4032
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\n7576390.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\n7576390.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2244

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:2700

C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
PID:1244
- C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
  C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3868
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3868 -s 12
    3⤵
    - Program crash
    PID:4984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3868 -ip 3868
1⤵
PID:440

C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
PID:3192
- C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
  C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
  2⤵
  - Executes dropped EXE
  PID:3316
- C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
  C:\Users\Admin\AppData\Local\Temp\c3912af058\oneetx.exe
  2⤵
  - Executes dropped EXE
  PID:5100

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

System Information Discovery