4e218ccb10f535539a793c0a4a13a67ba367b4aeaba88b2ca915915360b944b3

Analysis

max time kernel
149s
max time network
135s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260513-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
22/05/2026, 11:31

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General

Target
tmprmr8scyb.exe
Size 225KB
Sample260522-nmpsdscs91
SHA256 4e218ccb10f535539a793c0a4a13a67ba367b4aeaba88b2ca915915360b944b3
MD5 651370d84a320bdfe88a14d1acadd502
SHA1 9cd0e1a10b1bcd49191b36bf8cc4e42e0d93c442
SHA512 6a3a048e42954af8c1b5001b325fb373506f7b3b6b8a4a27d6c9de95496c49077cf40850e89b131078c72adbc5dc2aeaa93c628bc866bb42dd3f4bbe927045ad
SSDEEP 6144:YA2P27yTAnKGw0hjFhSR/W11yAJ9v0pMtRCpYM:YATuTAnKGwUAW3ycQqgf
TLSH
T10B346B31B7D0C435F5F213F449F652ABAA393DA16B34A0CB62D126EA5A346D8EC30357
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2828	2912	WerFault.exe	87
4824	1540	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmprmr8scyb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\27\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client"	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3400	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3400	Explorer.EXE
Token: SeCreatePagefilePrivilege	3400	Explorer.EXE
Token: SeShutdownPrivilege	3400	Explorer.EXE
Token: SeCreatePagefilePrivilege	3400	Explorer.EXE
Token: SeShutdownPrivilege	3400	Explorer.EXE
Token: SeCreatePagefilePrivilege	3400	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2912	winver.exe
1540	tmprmr8scyb.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1540 wrote to memory of 2912	1540	tmprmr8scyb.exe	87
PID 2912 wrote to memory of 3400	2912	winver.exe	57
PID 1540 wrote to memory of 3400	1540	tmprmr8scyb.exe	57

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3400
- C:\Users\Admin\AppData\Local\Temp\tmprmr8scyb.exe
  "C:\Users\Admin\AppData\Local\Temp\tmprmr8scyb.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:1540
- - C:\Windows\SysWOW64\winver.exe
    winver
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:2912
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2912 -s 312
      4⤵
      Program crash
      PID:2828
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1540 -s 936
    3⤵
    - Program crash
    PID:4824

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman
1⤵
- Modifies data under HKEY_USERS
PID:2852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2912 -ip 2912
1⤵
PID:3644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 232 -p 1540 -ip 1540
1⤵
PID:4696

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1540-1-0x0000000004AC0000-0x0000000005118000-memory.dmp

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memory/1540-2-0x0000000004930000-0x0000000004931000-memory.dmp

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memory/1540-6-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1540-12-0x0000000004AC0000-0x0000000005118000-memory.dmp

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memory/3400-4-0x0000000000840000-0x0000000000846000-memory.dmp

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memory/3400-5-0x0000000000840000-0x0000000000846000-memory.dmp

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memory/3400-9-0x0000000000860000-0x0000000000866000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads