1bf688e2b35c3e431a8458de0e55d30729a8ae2762568f82359ed0ccf75d65fa

General

Target

666.exe
Size

86KB
MD5

a7f9d16f72ba1782aff84741fcc43a7a
SHA1

20536bb7463d83143a0221e56c4faf2155e73bc7
SHA256

1bf688e2b35c3e431a8458de0e55d30729a8ae2762568f82359ed0ccf75d65fa
SHA512

59b08739c0eeedf8956a7dc44730d11548996ed1f6ef2dc6beac753fc1a6b844545250640d9f341a6c7a06f108cd43b6db98e9e7166729405e54ab9e5513a3cd
SSDEEP

1536:2Uv4AYvNDT0aJQcc7T7yVx+a0NqlLjvCPTPRhnBu3gAjObfnapxjJeU:28ACb/6jIU

Score

9^/10

bootkit evasion persistence ransomware

Malware Config

Signatures

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

666.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	666.exe

Disables Task Manager via registry modification
evasion
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

666.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation 666.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	666.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

666.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ShellExperience = "\"ShellExperience.exe\""	666.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

666.exe

description ioc process

File opened for modification \??\PhysicalDrive0 666.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3156 2488 WerFault.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	666.exe

pid	pid_target	process	target process
3156	2488	WerFault.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

Processes:

666.exeWMIC.exevssvc.exe

description	pid	process
Token: SeDebugPrivilege	1972	666.exe
Token: SeDebugPrivilege	1972	666.exe
Token: SeIncreaseQuotaPrivilege	2764	WMIC.exe
Token: SeSecurityPrivilege	2764	WMIC.exe
Token: SeTakeOwnershipPrivilege	2764	WMIC.exe
Token: SeLoadDriverPrivilege	2764	WMIC.exe
Token: SeSystemProfilePrivilege	2764	WMIC.exe
Token: SeSystemtimePrivilege	2764	WMIC.exe
Token: SeProfSingleProcessPrivilege	2764	WMIC.exe
Token: SeIncBasePriorityPrivilege	2764	WMIC.exe
Token: SeCreatePagefilePrivilege	2764	WMIC.exe
Token: SeBackupPrivilege	2764	WMIC.exe
Token: SeRestorePrivilege	2764	WMIC.exe
Token: SeShutdownPrivilege	2764	WMIC.exe
Token: SeDebugPrivilege	2764	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2764	WMIC.exe
Token: SeRemoteShutdownPrivilege	2764	WMIC.exe
Token: SeUndockPrivilege	2764	WMIC.exe
Token: SeManageVolumePrivilege	2764	WMIC.exe
Token: 33	2764	WMIC.exe
Token: 34	2764	WMIC.exe
Token: 35	2764	WMIC.exe
Token: 36	2764	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2764	WMIC.exe
Token: SeSecurityPrivilege	2764	WMIC.exe
Token: SeTakeOwnershipPrivilege	2764	WMIC.exe
Token: SeLoadDriverPrivilege	2764	WMIC.exe
Token: SeSystemProfilePrivilege	2764	WMIC.exe
Token: SeSystemtimePrivilege	2764	WMIC.exe
Token: SeProfSingleProcessPrivilege	2764	WMIC.exe
Token: SeIncBasePriorityPrivilege	2764	WMIC.exe
Token: SeCreatePagefilePrivilege	2764	WMIC.exe
Token: SeBackupPrivilege	2764	WMIC.exe
Token: SeRestorePrivilege	2764	WMIC.exe
Token: SeShutdownPrivilege	2764	WMIC.exe
Token: SeDebugPrivilege	2764	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2764	WMIC.exe
Token: SeRemoteShutdownPrivilege	2764	WMIC.exe
Token: SeUndockPrivilege	2764	WMIC.exe
Token: SeManageVolumePrivilege	2764	WMIC.exe
Token: 33	2764	WMIC.exe
Token: 34	2764	WMIC.exe
Token: 35	2764	WMIC.exe
Token: 36	2764	WMIC.exe
Token: SeBackupPrivilege	232	vssvc.exe
Token: SeRestorePrivilege	232	vssvc.exe
Token: SeAuditPrivilege	232	vssvc.exe

Suspicious use of FindShellTrayWindow 18 IoCs

Processes:

666.exe

pid	process
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe
1972	666.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

666.execmd.exe

description	pid	process	target process
PID 1972 wrote to memory of 492	1972	666.exe	cmd.exe
PID 1972 wrote to memory of 492	1972	666.exe	cmd.exe
PID 1972 wrote to memory of 492	1972	666.exe	cmd.exe
PID 492 wrote to memory of 2764	492	cmd.exe	WMIC.exe
PID 492 wrote to memory of 2764	492	cmd.exe	WMIC.exe
PID 492 wrote to memory of 2764	492	cmd.exe	WMIC.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\666.exe
"C:\Users\Admin\AppData\Local\Temp\666.exe"
1⤵
- Disables RegEdit via registry modification
- Checks computer location settings
- Modifies WinLogon
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1972

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:492

C:\Windows\SysWOW64\Wbem\WMIC.exe
wmic shadowcopy delete
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2764

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:232

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 476 -p 2488 -ip 2488
1⤵
PID:3868

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2488 -s 1748
1⤵
- Program crash
PID:3156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

File Deletion

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

1

T1490

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Downloads

memory/1972-133-0x00000000008D0000-0x00000000008EC000-memory.dmp

Filesize
112KB

Download
memory/1972-134-0x00000000058B0000-0x0000000005E54000-memory.dmp

Filesize
5.6MB

Download
memory/1972-135-0x00000000053A0000-0x0000000005432000-memory.dmp

Filesize
584KB

Download
memory/1972-136-0x00000000054E0000-0x00000000054F0000-memory.dmp

Filesize
64KB

Download
memory/1972-137-0x0000000002D60000-0x0000000002D6A000-memory.dmp

Filesize
40KB

Download
memory/1972-138-0x00000000054E0000-0x00000000054F0000-memory.dmp

Filesize
64KB

Download
memory/1972-139-0x00000000054E0000-0x00000000054F0000-memory.dmp

Filesize
64KB

Download
memory/1972-140-0x00000000054E0000-0x00000000054F0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads