523c1c03fa4daddac66688e74fd8ab362f651d247f96c97e9343ff12753e0e1a

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
05/11/2026, 06:12

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General

Target
Kernel/x64/Rapid_Upgrade.dll
Size 2.4MB
Sample261105-gyadhsff89
SHA256 523c1c03fa4daddac66688e74fd8ab362f651d247f96c97e9343ff12753e0e1a
MD5 414bd24e70923b3092d25b6c28c7a403
SHA1 8df318a6017dbeb0493cf3669f98cfd15d94ab3a
SHA512 fdf182da553b7ff0876d7509c475a195a8d436337dec60952230c1ccb76b6d0f27346c427f9db638b6c53edd9e71ac9fbf2b604a560fe286ddd662bcd93c444c
SSDEEP 49152:wLEmlXPTpg/9a7u+9ugYoxqIwIUi4AoG11RZtuYTlpxO9qGuhOOBa:w4m9PTpYQy+9uhoxqIfdomLrdnxL3I
TLSH
T1D3B53310FC72C19BC658B97BD4960E66F741EFA32BF16002A79E28094527A331D3D9DB
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 464 wrote to memory of 400	464	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Kernel\x64\Rapid_Upgrade.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:464
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\Kernel\x64\Rapid_Upgrade.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:400

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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