1ab33027c4965b027298651781a1c780c272818da189e2c3a8101ac578069260

Analysis

max time kernel
149s
max time network
122s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260130-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260130-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
11/05/2026, 03:31

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General

Target
$TEMP/R2RFBFKG.dll
Size 91KB
Sample260511-d3a9tsd18j
SHA256 1ab33027c4965b027298651781a1c780c272818da189e2c3a8101ac578069260
MD5 62695f6fa2a85fc9993f57dfcbdc2749
SHA1 07a9b478df63fba4cf3002974b4cf56b404d0914
SHA512 69dd0de913629853400106811bffdebd8ec2037c93c9f9820d3f140e84576912de3ab57434086e20cf8698185015c27fa307e06047e2219dcf38a927a36f3c95
SSDEEP 1536:NWTHBAtr5cPLOWpTo5iw4AInivibbb+S4A39:0ThAtr5cPLOiaBRIig3
TLSH
T120935B467492F332D52A117D735A47671F7FE8302212E4AB8BB81D575A32B83CF26683
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3988	5076	WerFault.exe	81

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 4492 wrote to memory of 5076	4492	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$TEMP\R2RFBFKG.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$TEMP\R2RFBFKG.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5076
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 648
    3⤵
    - Program crash
    PID:3988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 5076 -ip 5076
1⤵
PID:1888

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

Replay Monitor

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Downloads

memory/5076-0-0x0000000000B20000-0x0000000000B65000-memory.dmp

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