4e37bd063c40d80e10f33043aed0b6e6bd2afc1a1ff22058c0e38ecb402f60f0

Analysis

max time kernel
148s
max time network
88s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 20:12

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General

Target
tweaker.bat
Size 41KB
Sample260804-yza5wadn4v
SHA256 4e37bd063c40d80e10f33043aed0b6e6bd2afc1a1ff22058c0e38ecb402f60f0
MD5 88b4c193fa3bada2ce26b1762388bd65
SHA1 3219932b7743f7155918230473d3e9a0b4d66df4
SHA512 73026b8b16f91c14e685fe335a083e84bd4614a879aba188f61312b91b3a00de62df75deb2b97ad090b66b4aa809b325d15dbf4b6e6cc552ad1ad2fe796416ed
SSDEEP 768:0WakIAIhcetD0YHa1t7D6Pk6PCPEky7Xb:BId2Mb7Xb
TLSH
T1381362317D251332C698DA20A677EC2DFB223AC398A00B40F4FF359A1BE7645987E5D5
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

execution ransomware

Malware Config

Signatures

Downloads MZ/PE file 2 IoCs

flow	pid	Process
2	4740	curl.exe
5	1612	curl.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3240	powershell.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4220	cmd.exe

Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	vssvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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	vssvc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3240	powershell.exe
3240	powershell.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3240	powershell.exe
Token: SeBackupPrivilege	4916	vssvc.exe
Token: SeRestorePrivilege	4916	vssvc.exe
Token: SeAuditPrivilege	4916	vssvc.exe
Token: SeBackupPrivilege	1320	srtasks.exe
Token: SeRestorePrivilege	1320	srtasks.exe
Token: SeSecurityPrivilege	1320	srtasks.exe
Token: SeTakeOwnershipPrivilege	1320	srtasks.exe
Token: SeBackupPrivilege	1320	srtasks.exe
Token: SeRestorePrivilege	1320	srtasks.exe
Token: SeSecurityPrivilege	1320	srtasks.exe
Token: SeTakeOwnershipPrivilege	1320	srtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4220 wrote to memory of 4740	4220	cmd.exe	90
PID 4220 wrote to memory of 1548	4220	cmd.exe	91
PID 4220 wrote to memory of 1612	4220	cmd.exe	92
PID 4220 wrote to memory of 3240	4220	cmd.exe	93
PID 4220 wrote to memory of 2876	4220	cmd.exe	102
PID 4220 wrote to memory of 5752	4220	cmd.exe	103

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

cURL User-Agent 4 IoCs

Uses User-Agent string associated with cURL utility.

description	flow	ioc
HTTP User-Agent header	2	curl/8.8.0
HTTP User-Agent header	3	curl/8.8.0
HTTP User-Agent header	4	curl/8.8.0
HTTP User-Agent header	5	curl/8.8.0

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\tweaker.bat"
1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:4220
- C:\Windows\system32\curl.exe
  curl -g -k -L -# -o "C:\risxnfree\resources\Wub.exe" "https://r2.e-z.host/9e71d386-8c79-465c-9927-36ba4162c8f4/9cllihtz.exe"
  2⤵
  - Downloads MZ/PE file
  PID:4740
- C:\Windows\system32\curl.exe
  curl -g -k -L -# -o "C:\risxnfree\resources\DQ_Guide.txt" "https://github.com/risxntweaks/data-queue-size-txt/releases/download/text/Data.Queue.Size.Guide.txt"
  2⤵
  PID:1548
- C:\Windows\system32\curl.exe
  curl -g -k -L -# -o "C:\risxnfree\resources\MSI_Utility_V3.exe" "https://r2.e-z.host/9e71d386-8c79-465c-9927-36ba4162c8f4/9tlvwpdm.exe"
  2⤵
  - Downloads MZ/PE file
  PID:1612
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -Command "Checkpoint-Computer -Description 'Risxn Free V20' -RestorePointType 'MODIFY_SETTINGS'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3240
- C:\Windows\system32\chcp.com
  chcp 65001
  2⤵
  PID:2876
- C:\Windows\system32\mode.com
  mode 100,32
  2⤵
  PID:5752

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:4916

C:\Windows\system32\srtasks.exe
C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1320

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3240-3-0x00007FF8C7C6F000-0x00007FF8C7C70000-memory.dmp

Download

memory/3240-4-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

Download

memory/3240-7-0x000002317F880000-0x000002317F8A2000-memory.dmp

Download

memory/3240-8-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

Download

memory/3240-9-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

Download

memory/3240-10-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

Download

memory/3240-11-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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memory/3240-12-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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memory/3240-13-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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memory/3240-14-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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memory/3240-15-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

Download

memory/3240-16-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

Download

memory/3240-17-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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memory/3240-18-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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memory/3240-20-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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memory/3240-21-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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memory/3240-23-0x00007FF8C7AE0000-0x00007FF8C8484000-memory.dmp

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