e20c67c6bd7c6bbc341d8f0225acb00977c7387bddb717de537d17ebdc512499

General

Target
2026-10-25_a40df9dd5be7a2d4af8e4ff4e2b42d47_elex_wannacry.exe
Size 90KB
Sample261026-v2fxcsft9y
SHA256 e20c67c6bd7c6bbc341d8f0225acb00977c7387bddb717de537d17ebdc512499
MD5 a40df9dd5be7a2d4af8e4ff4e2b42d47
SHA1 5c7a8734f0fbeb14dec6ae47cc969d178277a2f1
SHA512 c0abaab8b64de5df6cde671b0ebd90a9d0eb795ae573c5c61e97506fe86443f12f9c983a4ce00db54585420223504ee8903be4c3c9bf90540fba529d04f7f89a
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlW:eSABNx6vb4RoI4pyjHYLhal01UoPXa
TLSH
T155938D47ABA598E5E0206C70161D673487EED86F3B1497A38384FE4EE133D95EC3618E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

defense_evasion discovery execution

Malware Config

Signatures

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5468	puuef.exe

Executes dropped EXE 1 IoCs

pid	Process
5468	puuef.exe

Loads dropped DLL 1 IoCs

pid	Process
2300	rundll32.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
4976	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1804	2300	WerFault.exe	92

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	2026-10-25_a40df9dd5be7a2d4af8e4ff4e2b42d47_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	puuef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
4720	PING.EXE
4976	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4720	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3656	2026-10-25_a40df9dd5be7a2d4af8e4ff4e2b42d47_elex_wannacry.exe
5468	puuef.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3656 wrote to memory of 4976	3656	2026-10-25_a40df9dd5be7a2d4af8e4ff4e2b42d47_elex_wannacry.exe	88
PID 4976 wrote to memory of 4720	4976	cmd.exe	90
PID 4976 wrote to memory of 5468	4976	cmd.exe	91
PID 5468 wrote to memory of 2300	5468	puuef.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-10-25_a40df9dd5be7a2d4af8e4ff4e2b42d47_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-25_a40df9dd5be7a2d4af8e4ff4e2b42d47_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3656
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\puuef.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-25_a40df9dd5be7a2d4af8e4ff4e2b42d47_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:4976
- - 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:4720
- - \??\c:\puuef.exe
    c:\puuef.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-25_a40df9dd5be7a2d4af8e4ff4e2b42d47_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5468
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ibwsa\wwhcffath.dll",DoVirusScan c:\puuef.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:2300
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2300 -s 476
        5⤵
        Program crash
        
        PID:1804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2300 -ip 2300
1⤵
PID:4732

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

Privilege Escalation

Defense Evasion

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

wwhcffath.dll

Path \??\c:\ibwsa\wwhcffath.dll
Size 50KB
SHA256 7604a0d3e695ff2f47b2961a860aa77e41952df48c132c18ac8d84e6ed3ee8eb
MD5 18cc91cc0c4c41e39a2c5310e760f0ef
SHA1 aaacc94db8d8a37e5d34878aa259d3274a5ff2a7
SHA512 8abba5220a7216288d0d2c683a5d01b796b1179464a2432eda991004348223c822c54ab39fd19302ff01974ec8d026e98280e9f1bdb67178126d75a974ecc7e7
SSDEEP 768:Z+arYIR3u5v4bGwCl56LNQQe5JBtGf1oTYtx/qQvo9:ZPrG57TzDxJS6Etx/ZvO
TLSH
T1AB33E178E1F4B8F6E46EAB345D82146DB1C16BD34D3080BA079224AF6C37E578B52731
MD5 SHA1 SHA512 SSDEEP TLSH

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puuef.exe

Path \??\c:\puuef.exe
Size 90KB
SHA256 fbc40ec1304bcf9bd11a9141aeca0af46e1b09fc1e800a1f97fb1965a01e9f40
MD5 e15c7638e983bff7339ccaecf6e37985
SHA1 318f61c8628becb9794f1a9c16ed6099d0605261
SHA512 477208e7a56a1060901f1ef31fd990e1ca4a0dd56b04a23ea5d57f311c1a5c43f43a11968d42b40b9927ee0bc7b0d8562e5d78ed76160fe5ed7ee7acbbe5b55e
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlQ:eSABNx6vb4RoI4pyjHYLhal01UoPXM
TLSH
T196938D47ABA598E5E0206C70161D673083EED86F3B1497A34384FE4EE533D95EC3A18A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2300-9-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/3656-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/3656-2-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/5468-6-0x0000000000400000-0x0000000000417000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads