1439d69a08a2e9a4919c561d6838df1fe4e79f24070af69321b7b036b6cb9c32

General

Target
2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe
Size 49KB
Sample260822-hsy1cssbrf
SHA256 1439d69a08a2e9a4919c561d6838df1fe4e79f24070af69321b7b036b6cb9c32
MD5 bc51f20999d3274afddb0fdcadf8961b
SHA1 8827339eb28683b562c1f18adc1c3e7acf20c5a7
SHA512 76754dba75a09e5f3515161831300707c252fa613aa5a157ab518d5d0b9a9314865fe0bdaba2df3eb9e814cb70bb1778690205d370478b087eb0c4e36ca4ebd7
SSDEEP 1536:7m1n4CrSuwb273hhEiA+pk8oJGap7tED3NS6fdP:C1n4/IIUS9HF2D3NT9
TLSH
T1E933D097FFAA14B2CC21227474DB37728A6171D54041F565EB36DCB2A4DE1B0E829E0F
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 2 IoCs

pid	Process
5748	sqlserver.exe
2700	2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dumpkernel.exe	2026-08-21_bc51f20999d3274afddb0fdcadf8961b_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 2 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
6316	cmd.exe
5368	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	2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sqlserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	sqlserver.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	sqlserver.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1256 wrote to memory of 5748	1256	2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe	90
PID 1256 wrote to memory of 6316	1256	2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe	91
PID 1256 wrote to memory of 5368	1256	2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe	93
PID 5368 wrote to memory of 2700	5368	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1256
- 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:5748
- 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:6316
- 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:5368
- - C:\Users\Admin\AppData\Local\Temp\2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-21_bc51f20999d3274afddb0fdcadf8961b_elex_wannacry.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2700

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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 e2835c106c0535fd5af85c3ecce7c646866b27a030138332617bf0ec96394a9f
MD5 8d305307748ddc1438e2cec61fb90690
SHA1 a354e76f1ef29ff588d84a9f96d2ba4746d22b5c
SHA512 9fc30bd8c8366551723204879ebcccdf7cb3dfebc75e25270193325e4406f1d750a3d8376de3f78a0b8b7bd22d5060cb9d3812a6b7a950a34c0debf438f1212f
TLSH
T14BF04C1591FE86672C79A01E8B97BA4EB312B865BE562B344B00494AA48040BFE63252
MD5 SHA1 SHA512 TLSH

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tttdelzzz.bat

Path C:\Windows\Temp\tttdelzzz.bat
Size 313B
SHA256 41647e6a3f3d7f5635a22535ab69e95b62e943f33fba7720ec5d1dcf50060d6c
MD5 e9d32f393792ddcc15b764b8aa17247c
SHA1 48cc638d54699fd3e46b7ec76a626e4e93ccf036
SHA512 d269dfdf5616f77ca045aa468d5172a90c67550da0381f219e03e846a5fd76e81556ee144d9f726c1fcd591bc08151f6deaa428bf39b7fa0d9dd8d43ff546d8b
TLSH
T17EE07D2878F856476C7EA01EC7933A8AF312BC962D1B17784F014845A48010FAC93142
MD5 SHA1 SHA512 TLSH

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Server32History.dat

Path C:\Windows\temp\Server32History.dat
Size 4KB
SHA256 cb951df760a9ba4ea65977cd75f66e602c46e14f858138f331a4afeeb318e9a2
MD5 4e7a7cccf1f2a93bf3084ca02ceb7ef6
SHA1 b0142d920a421d8d7ef8468b6079ef99f3c6003a
SHA512 b15ff6b4ec8114f3d3f843f77cfd1d5bfe30174cef92b501ec6950c66c01e36cf6022e5ab0dbd68f5827a37da2ec4b5eda5116cdf9c942379461ee06fd2de857
TLSH
T151812E0B2798C463D2580B3312D722E33176B124239541AF7E573B1EFA54AABEC3C742
MD5 SHA1 SHA512 TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads