2df42da03fdbf749031cb98da3b4ff7802576278311889df7ba172157a15870c

Analysis

max time kernel
149s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
25/08/2026, 08:12

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General

Target
2026-08-24_8ab7778c539caf39b57c292f8b5c3f0f_elex_wannacry.exe
Size 662KB
Sample260825-j384raydrd
SHA256 2df42da03fdbf749031cb98da3b4ff7802576278311889df7ba172157a15870c
MD5 8ab7778c539caf39b57c292f8b5c3f0f
SHA1 76fed8235f417b838bee2a8961a65fce7f342412
SHA512 590dbb626ad58c9817151ab6bce57eaecc78b4312003ab5d0c3708a3098c4ea8000b61cd618cfd3acffc648b90db6602f211115451dbda57dfd234411a5b00d7
SSDEEP 12288:cSfSps28tL4l4Xzqs4f2S3heRW2ULNLw6VNCsJlgwG0t:f0O0WX1rSxIW2oNxmYlgIt
TLSH
T1D4E4F112B2C899A6CC096432CB62A678F7E6CDC44F228EF71384763D8B36584933F575
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

bootkit discovery execution persistence spyware stealer

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral1/memory/3996-16-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3996-18-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3996-20-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3996-23-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3996-26-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Deletes itself 1 IoCs

pid	Process
4796	bcjey.exe

Executes dropped EXE 2 IoCs

pid	Process
4796	bcjey.exe
3996	oototr.exe

Loads dropped DLL 1 IoCs

pid	Process
3996	oototr.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3053180483-1881419501-3594244048-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Disp = "c:\\Program Files\\ynvcd\\oototr.exe \"c:\\Program Files\\ynvcd\\oototr.dll\",Dispatch"	oototr.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\w:	oototr.exe
File opened (read-only)	\??\y:	oototr.exe
File opened (read-only)	\??\h:	oototr.exe
File opened (read-only)	\??\j:	oototr.exe
File opened (read-only)	\??\n:	oototr.exe
File opened (read-only)	\??\p:	oototr.exe
File opened (read-only)	\??\u:	oototr.exe
File opened (read-only)	\??\x:	oototr.exe
File opened (read-only)	\??\e:	oototr.exe
File opened (read-only)	\??\l:	oototr.exe
File opened (read-only)	\??\t:	oototr.exe
File opened (read-only)	\??\v:	oototr.exe
File opened (read-only)	\??\b:	oototr.exe
File opened (read-only)	\??\g:	oototr.exe
File opened (read-only)	\??\i:	oototr.exe
File opened (read-only)	\??\o:	oototr.exe
File opened (read-only)	\??\z:	oototr.exe
File opened (read-only)	\??\a:	oototr.exe
File opened (read-only)	\??\k:	oototr.exe
File opened (read-only)	\??\m:	oototr.exe
File opened (read-only)	\??\q:	oototr.exe
File opened (read-only)	\??\r:	oototr.exe
File opened (read-only)	\??\s:	oototr.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

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	oototr.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\ynvcd	bcjey.exe
File created	\??\c:\Program Files\ynvcd\oototr.dll	bcjey.exe
File created	\??\c:\Program Files\ynvcd\oototr.exe	bcjey.exe
File opened for modification	\??\c:\Program Files\ynvcd\oototr.exe	bcjey.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
4900	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	2026-08-24_8ab7778c539caf39b57c292f8b5c3f0f_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bcjey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oototr.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4900	cmd.exe
5548	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	oototr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	oototr.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5548	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3996	oototr.exe
3996	oototr.exe
3996	oototr.exe
3996	oototr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3996	oototr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4840	2026-08-24_8ab7778c539caf39b57c292f8b5c3f0f_elex_wannacry.exe
4796	bcjey.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4840 wrote to memory of 4900	4840	2026-08-24_8ab7778c539caf39b57c292f8b5c3f0f_elex_wannacry.exe	86
PID 4900 wrote to memory of 5548	4900	cmd.exe	88
PID 4900 wrote to memory of 4796	4900	cmd.exe	89
PID 4796 wrote to memory of 3996	4796	bcjey.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-08-24_8ab7778c539caf39b57c292f8b5c3f0f_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-24_8ab7778c539caf39b57c292f8b5c3f0f_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\bcjey.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-24_8ab7778c539caf39b57c292f8b5c3f0f_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4900
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5548
- - C:\Users\Admin\AppData\Local\Temp\bcjey.exe
    C:\Users\Admin\AppData\Local\Temp\\bcjey.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-24_8ab7778c539caf39b57c292f8b5c3f0f_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4796
  - - \??\c:\Program Files\ynvcd\oototr.exe
      "c:\Program Files\ynvcd\oototr.exe" "c:\Program Files\ynvcd\oototr.dll",Dispatch C:\Users\Admin\AppData\Local\Temp\bcjey.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3996

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

oototr.exe

Path C:\Program Files\ynvcd\oototr.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

bcjey.exe

Path C:\Users\Admin\AppData\Local\Temp\bcjey.exe
Size 662KB
SHA256 cf177759044b61875da7d964e5c0c598dec5ef0c470e615a22e68c0c45442e65
MD5 664b117b9340d70f1ce9f7226e7f407c
SHA1 383f7da714704177d2031535cf36f45e6faa1748
SHA512 c8df5cb626efc2da4b7400e959b2bd4912bd9856a2f858586b738dbadcad9d4e2028e613fed46fc836af57e2582f28bde4892214ee36d059e04f349a5a63ef7d
SSDEEP 12288:cSfSps28tL4l4Xzqs4f2S3heRW2ULNLw6VNCsJlgwG09:f0O0WX1rSxIW2oNxmYlgI9
TLSH
T102E4F112B2C899A6CC096432CB62A678F7E6CDC44F228EF71384763D8B36584933F575
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

oototr.dll

Path \??\c:\Program Files\ynvcd\oototr.dll
Size 210KB
SHA256 5db062b856e8ab3c86420a4bfeed944f2ae2dd62f6b95d2c9b25e2b0a2bc80a9
MD5 3c5899ea1d34d5df9972a8723fcc23e7
SHA1 1e8c298d9729133f0b8b121adc87dc4abbb93024
SHA512 732b06de14a8edc7e7c5c024301fecc97935816ddaf82e43ef84aceed1edc0bf5c5441e95df260bb325ece6af3d746b7621a364d6562ce9a12cce64d166aebe8
SSDEEP 3072:MI/38csWuZwCMZ9kfuZJR+go6+n05NkxbmUVg/GXJb8Rps6T+u:9MIuSrZJR+gopn6sCShm+u
TLSH
T1F624F14EF980DF6BC80E0534D86F6675ADA1294B5E21836F2B4CE30E3DF2B381516E59
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3996-15-0x0000000002D70000-0x0000000002D72000-memory.dmp

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memory/3996-14-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/3996-16-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/3996-18-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/3996-20-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/3996-21-0x0000000002D70000-0x0000000002D72000-memory.dmp

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memory/3996-23-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/3996-26-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/4796-10-0x0000000000400000-0x00000000004A0000-memory.dmp

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memory/4840-2-0x0000000000400000-0x00000000004A0000-memory.dmp

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memory/4840-0-0x0000000000400000-0x00000000004A0000-memory.dmp

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