d0521fb7367c52451968c8a536aac19ea449cbcd144022831cfc63bff5bc0f8e

Reason

Machine shutdown

General

Target

XMLFC-NI_27.msi
Size

267KB
MD5

3ba27f796d18104606b2f58744fb017c
SHA1

cc253e24ab868e61419a78fc161a5546ce878bd6
SHA256

e2eaa5496cb25b7d2866507d4fc494173588897b4d589b8322fc9635bac71e02
SHA512

30fa4108697a1f80a3164318d953e585dee98965477e7dcbaf45d1e2194f648c0e4398ee55d3540b09897dfdbd934abed9c48141adddb41d1765109d7806320f

Score

8^/10

bootkit persistence ransomware

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

Processes:

MsiExec.exe

flow pid process

8 4268 MsiExec.exe
15 4268 MsiExec.exe
17 4268 MsiExec.exe
19 4268 MsiExec.exe
21 4268 MsiExec.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
Loads dropped DLL 2 IoCs

Processes:

MsiExec.exe

pid process

4268 MsiExec.exe
4268 MsiExec.exe

flow	pid	process
8	4268	MsiExec.exe
15	4268	MsiExec.exe
17	4268	MsiExec.exe
19	4268	MsiExec.exe
21	4268	MsiExec.exe

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

pid	process
4268	MsiExec.exe
4268	MsiExec.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\USER\S-1-5-21-3341490333-719741536-2920803124-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\xìïìÍyÍyâëÚäÎq×á.App.Refresh.System = "C:\\ProgramData\\Exported Files\\xìïìÍyÍyâëÚäÎq×á.App.Refresh.System.exe"	reg.exe

Enumerates connected drives 3 TTPs 48 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

msiexec.exemsiexec.exe

description	ioc	process
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\F:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\F:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe

Drops file in Windows directory 9 IoCs

Processes:

msiexec.exe

description	ioc	process
File opened for modification	C:\Windows\Installer\MSI6557.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI67AA.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\f7464ea.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\f7464ea.msi	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\Installer\SourceHash{187B873D-9E06-4065-A278-668510B1CE94}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI68D4.tmp	msiexec.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

msiexec.exewlrmdr.exe

pid process

5092 msiexec.exe
5092 msiexec.exe
2280 wlrmdr.exe
2280 wlrmdr.exe

pid	process
5092	msiexec.exe
5092	msiexec.exe
2280	wlrmdr.exe
2280	wlrmdr.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

msiexec.exemsiexec.exeshutdown.exe

description	pid	process
Token: SeShutdownPrivilege	4760	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4760	msiexec.exe
Token: SeSecurityPrivilege	5092	msiexec.exe
Token: SeCreateTokenPrivilege	4760	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4760	msiexec.exe
Token: SeLockMemoryPrivilege	4760	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4760	msiexec.exe
Token: SeMachineAccountPrivilege	4760	msiexec.exe
Token: SeTcbPrivilege	4760	msiexec.exe
Token: SeSecurityPrivilege	4760	msiexec.exe
Token: SeTakeOwnershipPrivilege	4760	msiexec.exe
Token: SeLoadDriverPrivilege	4760	msiexec.exe
Token: SeSystemProfilePrivilege	4760	msiexec.exe
Token: SeSystemtimePrivilege	4760	msiexec.exe
Token: SeProfSingleProcessPrivilege	4760	msiexec.exe
Token: SeIncBasePriorityPrivilege	4760	msiexec.exe
Token: SeCreatePagefilePrivilege	4760	msiexec.exe
Token: SeCreatePermanentPrivilege	4760	msiexec.exe
Token: SeBackupPrivilege	4760	msiexec.exe
Token: SeRestorePrivilege	4760	msiexec.exe
Token: SeShutdownPrivilege	4760	msiexec.exe
Token: SeDebugPrivilege	4760	msiexec.exe
Token: SeAuditPrivilege	4760	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4760	msiexec.exe
Token: SeChangeNotifyPrivilege	4760	msiexec.exe
Token: SeRemoteShutdownPrivilege	4760	msiexec.exe
Token: SeUndockPrivilege	4760	msiexec.exe
Token: SeSyncAgentPrivilege	4760	msiexec.exe
Token: SeEnableDelegationPrivilege	4760	msiexec.exe
Token: SeManageVolumePrivilege	4760	msiexec.exe
Token: SeImpersonatePrivilege	4760	msiexec.exe
Token: SeCreateGlobalPrivilege	4760	msiexec.exe
Token: SeRestorePrivilege	5092	msiexec.exe
Token: SeTakeOwnershipPrivilege	5092	msiexec.exe
Token: SeRestorePrivilege	5092	msiexec.exe
Token: SeTakeOwnershipPrivilege	5092	msiexec.exe
Token: SeRestorePrivilege	5092	msiexec.exe
Token: SeTakeOwnershipPrivilege	5092	msiexec.exe
Token: SeRestorePrivilege	5092	msiexec.exe
Token: SeTakeOwnershipPrivilege	5092	msiexec.exe
Token: SeRestorePrivilege	5092	msiexec.exe
Token: SeTakeOwnershipPrivilege	5092	msiexec.exe
Token: SeShutdownPrivilege	1604	shutdown.exe
Token: SeRemoteShutdownPrivilege	1604	shutdown.exe
Token: SeRestorePrivilege	5092	msiexec.exe
Token: SeTakeOwnershipPrivilege	5092	msiexec.exe
Token: SeRestorePrivilege	5092	msiexec.exe
Token: SeTakeOwnershipPrivilege	5092	msiexec.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

msiexec.exe

pid process

4760 msiexec.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

wlrmdr.exeLogonUI.exe

pid process

2280 wlrmdr.exe
2768 LogonUI.exe

pid	process
4760	msiexec.exe

pid	process
2280	wlrmdr.exe
2768	LogonUI.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

msiexec.exeMsiExec.exe

description	pid	process	target process
PID 5092 wrote to memory of 4268	5092	msiexec.exe	MsiExec.exe
PID 5092 wrote to memory of 4268	5092	msiexec.exe	MsiExec.exe
PID 5092 wrote to memory of 4268	5092	msiexec.exe	MsiExec.exe
PID 4268 wrote to memory of 1544	4268	MsiExec.exe	reg.exe
PID 4268 wrote to memory of 1544	4268	MsiExec.exe	reg.exe
PID 4268 wrote to memory of 1544	4268	MsiExec.exe	reg.exe
PID 4268 wrote to memory of 1604	4268	MsiExec.exe	shutdown.exe
PID 4268 wrote to memory of 1604	4268	MsiExec.exe	shutdown.exe
PID 4268 wrote to memory of 1604	4268	MsiExec.exe	shutdown.exe

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\XMLFC-NI_27.msi
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4760

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5092

C:\Windows\syswow64\MsiExec.exe
C:\Windows\syswow64\MsiExec.exe -Embedding E7B087A390286E0C18706BC950EEABE1
2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4268

C:\Windows\SysWOW64\reg.exe
"C:\Windows\System32\reg.exe" ADD "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "xìïìÍyÍyâëÚäÎq×á.App.Refresh.System" /t REG_SZ /F /D "C:\ProgramData\Exported Files\xìïìÍyÍyâëÚäÎq×á.App.Refresh.System.exe"
3⤵
- Adds Run key to start application
PID:1544

C:\WINDOWS\SysWOW64\shutdown.exe
"C:\WINDOWS\system32\shutdown.exe" -r -t 1 -f
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1604

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:2280

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3ad1055 /state1:0x41c64e6d
1⤵
- Modifies WinLogon to allow AutoLogon
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2768

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSI461fc.LOG
MD5
ed2f8d8e327ff2d31333c27caed49317

SHA1
f3a8c697c258842f1bb7e460a6498f6831f5f532

SHA256
09b625c5cf6274893a705171e7d6f32bf81b5940cafab14498fbc1e5e7f50141

SHA512
8374c9225dbf56004ce1e83f0c69d97dc103660310bca1966989d37f57a63275eab7cb771038ab6879359743722578ec523a7454c987c8e12ade322f95040be4

Download Submit
C:\Windows\Installer\MSI6557.tmp
MD5
5c5bef05b6f3806106f8f3ce13401cc1

SHA1
6005fbe17f6e917ac45317552409d7a60976db14

SHA256
f2f3ae8ca06f5cf320ca1d234a623bf55cf2b84c1d6dea3d85d5392e29aaf437

SHA512
97933227b6002127385ace025f85a26358e47ee79c883f03180d474c15dbaf28a88492c8e53aefc0d305872edd27db0b4468da13e6f0337988f58d2ee35fd797

Download Submit
C:\Windows\Installer\MSI67AA.tmp
MD5
5c5bef05b6f3806106f8f3ce13401cc1

SHA1
6005fbe17f6e917ac45317552409d7a60976db14

SHA256
f2f3ae8ca06f5cf320ca1d234a623bf55cf2b84c1d6dea3d85d5392e29aaf437

SHA512
97933227b6002127385ace025f85a26358e47ee79c883f03180d474c15dbaf28a88492c8e53aefc0d305872edd27db0b4468da13e6f0337988f58d2ee35fd797

Download Submit
\Windows\Installer\MSI6557.tmp
MD5
5c5bef05b6f3806106f8f3ce13401cc1

SHA1
6005fbe17f6e917ac45317552409d7a60976db14

SHA256
f2f3ae8ca06f5cf320ca1d234a623bf55cf2b84c1d6dea3d85d5392e29aaf437

SHA512
97933227b6002127385ace025f85a26358e47ee79c883f03180d474c15dbaf28a88492c8e53aefc0d305872edd27db0b4468da13e6f0337988f58d2ee35fd797

Download Submit
\Windows\Installer\MSI67AA.tmp
MD5
5c5bef05b6f3806106f8f3ce13401cc1

SHA1
6005fbe17f6e917ac45317552409d7a60976db14

SHA256
f2f3ae8ca06f5cf320ca1d234a623bf55cf2b84c1d6dea3d85d5392e29aaf437

SHA512
97933227b6002127385ace025f85a26358e47ee79c883f03180d474c15dbaf28a88492c8e53aefc0d305872edd27db0b4468da13e6f0337988f58d2ee35fd797

Download Submit
memory/1544-8-0x0000000000000000-mapping.dmp

Download
memory/1604-9-0x0000000000000000-mapping.dmp

Download
memory/4268-3-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads