df1c5f94713e0a75f8d280e5826785d7573086a8176671cea99122084c165bb7

Analysis

max time kernel
148s
max time network
133s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
21/08/2026, 13:21

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General

Target
2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe
Size 97KB
Sample260821-qlraya1ckb
SHA256 df1c5f94713e0a75f8d280e5826785d7573086a8176671cea99122084c165bb7
MD5 dbbffe5f5756646849c0430397dd4c8f
SHA1 88919e4338153f5e427121e98ff84958508765a1
SHA512 56e31ee44cfec77b19ac5cd914dd1da4bf677b4d80a3e9d13d78adbdb93976887726a0839a3dee63f22f0ab0a9ce937a9e39a0936e6cc6e7aaeea1c83c0cb9ac
SSDEEP 3072:C1n4/IIUS9HF2D3NshTwkv193BA5LQBirk:XIrSFULeTJC2
TLSH
T1FEA3F197FF722972CC1512B5A0C72B738A32B2856064F529DB36FCB668CA161E419D0F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery execution persistence privilege_escalation

Malware Config

Signatures

Creates a file in the Startup directory 1 TTPs 1 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

persistence privilege_escalation

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Update.bat	sqlserver.exe

Executes dropped EXE 4 IoCs

pid	Process
588	sqlserver.exe
5144	2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe
3256	dumpkernel.exe
2188	dumpkernel.exe

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kernelfaultEx = "C:\\Windows\\SysWOW64\\dumpkernel.exe"	reg.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dumpkernel.exe	2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 3 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
3244	cmd.exe
3040	cmd.exe
5804	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sqlserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dumpkernel.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dumpkernel.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	sqlserver.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	sqlserver.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 588	1096	2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe	89
PID 1096 wrote to memory of 3244	1096	2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe	90
PID 1096 wrote to memory of 3040	1096	2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe	92
PID 3040 wrote to memory of 5144	3040	cmd.exe	94
PID 5144 wrote to memory of 1524	5144	2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe	95
PID 3040 wrote to memory of 3256	3040	cmd.exe	97
PID 3256 wrote to memory of 5804	3256	dumpkernel.exe	98
PID 5804 wrote to memory of 4316	5804	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Windows\temp\sqlserver.exe
  "C:\Windows\temp\sqlserver.exe"
  2⤵
  - Creates a file in the Startup directory
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  PID:588
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Windows\temp\tttdelzzz.bat" "
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:3244
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Windows\temp\tttbrozzz.bat" "
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Users\Admin\AppData\Local\Temp\2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-21_dbbffe5f5756646849c0430397dd4c8f_elex_wannacry.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:5144
  - - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
      dw20.exe -x -s 792
      4⤵
      PID:1524
- - C:\Windows\SysWOW64\dumpkernel.exe
    "C:\Windows\system32\dumpkernel.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3256
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c reg add HKEY_LOCAL_MACHINE\Software\Microsoft\windows\currentVersion\run /v kernelfaultEx /t REG_SZ /d "C:\Windows\SysWOW64\dumpkernel.exe" /f
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:5804
    - - C:\Windows\SysWOW64\reg.exe
        
        reg add HKEY_LOCAL_MACHINE\Software\Microsoft\windows\currentVersion\run /v kernelfaultEx /t REG_SZ /d "C:\Windows\SysWOW64\dumpkernel.exe" /f
        5⤵
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        
        PID:4316

C:\Windows\SysWOW64\dumpkernel.exe
C:\Windows\SysWOW64\dumpkernel.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2188

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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

dumpkernel.exe

Path C:\Windows\SysWOW64\dumpkernel.exe
Size 45KB
SHA256 bbab9383065b21a75aa291f395ae8a3f59cc013e4a865e43be792d7b5b9fc1c3
MD5 620e8fa4a42e2dc3e4294115e56ba62c
SHA1 f2df7f6ae69b480c5aa3372c362bbf5ae80cc4f8
SHA512 4f926e087e6dac7e830d4b65b1a6eae9504a7c758321c202d8001af5632d33c7661fd6dd3c75288f5cd400d16e23536d9a43f9fe4a4acd25360799b502f5be38
SSDEEP 768:7m16Gr4CrJgJUwdOgVx0r7R1DhhSakiAmYgpk8AdJGaoM8ol3/USztDgD3NKb:7m1n4CrSuwbW73hhEiA+pk8oJGap7tES
TLSH
T14E23C097BFA904B1C821227029D77B738A6179D54041F524EB36FCB6A4EE1B0E819E4F
MD5 SHA1 SHA512 SSDEEP TLSH

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sqlserver.exe

Path C:\Windows\Temp\sqlserver.exe
Size 15KB
SHA256 23fea8b183632f91e5a4d1d6a43283846c734eee820eb2084ad428b7cbe92d53
MD5 c83a01f25ea0e1c9200c5893aa2d2199
SHA1 d0c53a1aaf2be6aec7b0f73e767b62fffb010f08
SHA512 3961ce6f4e8871a5032fc5616e057e15892d846270d572f156aebd5557b72cf5dd0139e87306073243b366851e6db09b83f41294a8230836597c2c840e2704d7
SSDEEP 384:y4Od9Q2hJy5g75oOuHh7parHdAI0ptTvzTn:y4aQ2hJyjOuHhntzz
TLSH
T1D3623D5A79479F43C594C0B12B68AB38E7B9B4773D188053D740CE483E7F8819529F8E
MD5 SHA1 SHA512 SSDEEP TLSH

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tttbrozzz.bat

Path C:\Windows\Temp\tttbrozzz.bat
Size 582B
SHA256 c0b338a6168589dc1e02d8d6a427d249c2f82e1775963d0ffddc0b8f1b381fd9
MD5 b5607376254a9cdfae6916cb5a6587e5
SHA1 318ef3ca9d1a87ff77ef55b3c051c58592d3e52d
SHA512 3299d287076a0b46173b07583ca1af558a4fa852f741fe9677780e1375597fec4d04cd933b6a3d7ef60489f1e6bfa630cc40eeb97d987cdfe908d97799aa4e93
TLSH
T1B1F04C11C1FEC6791C60A4130EEA650BB314B439FF5417144B144A5BE1B180FFF97281
MD5 SHA1 SHA512 TLSH

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tttdelzzz.bat

Path C:\Windows\Temp\tttdelzzz.bat
Size 313B
SHA256 88875bae8ac44315e238fa8fe60c95f4395eba6eef0992b77c376d4ce5519f27
MD5 f37579115735b892930cf1d745fec54e
SHA1 85fd04ea631237f361f0d6dbc71cf9a42d0e50c3
SHA512 f1b30222a51d5a88b620fe57c4191a4b5e7fa0828bdffb637cd5430b23103599462c19561d77cc4d571a2be49f7851f34fd676a3b786634df19b2e8db0088f45
TLSH
T117E07D25C0F9865A4C30A0135BE62507F31874697E4503544F144966D1B250EFEC6181
MD5 SHA1 SHA512 TLSH

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Server32History.dat

Path C:\Windows\temp\Server32History.dat
Size 52KB
SHA256 e1318725ee64356f95c19401a01e450df9093871a14ef01a8b3b67ca427b10e5
MD5 2a55141e86580508b02d2a3edca364d7
SHA1 63f02fd0b93a3bb1a16cbbb2e282824a5f7adf5b
SHA512 90bc8e544f708d87d06ff21dfa5c3dc7048abec6fe6602804d330b1507670e27496b3eade3485f19ec756a81ac3004652c7d582f736fc7b4d169d8f4cbad36b5
SSDEEP 768:ZFxf40J8/b9g69y4+bEHQzdUdgT30ZjPuH:PCvQdUdgL014
TLSH
T11D332C4233B82617E67692F5A67228418BB2796E1935C6FE0DC534CF20F4F452B90F9B
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/5144-32-0x00007FFE2A6D0000-0x00007FFE2B108000-memory.dmp

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memory/5144-31-0x000000001C450000-0x000000001C91E000-memory.dmp

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memory/5144-33-0x000000001BDA0000-0x000000001BE3C000-memory.dmp

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memory/5144-35-0x00007FFE2A6D0000-0x00007FFE2B108000-memory.dmp

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memory/5144-34-0x0000000001700000-0x0000000001708000-memory.dmp

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memory/5144-38-0x00007FFE2A6D0000-0x00007FFE2B108000-memory.dmp

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memory/5144-39-0x00007FFE2A6D0000-0x00007FFE2B108000-memory.dmp

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memory/5144-30-0x00007FFE2A9CA000-0x00007FFE2A9CB000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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