e6c49e7f6658cd35934c5962cf5ac202715232b78fff3acc788772a48b10fd13

General

Target
2026-08-07_795165adacd50242a5371b8c1465648f_elex_wannacry.exe
Size 86KB
Sample260807-yleadavyht
SHA256 e6c49e7f6658cd35934c5962cf5ac202715232b78fff3acc788772a48b10fd13
MD5 795165adacd50242a5371b8c1465648f
SHA1 e0767c7c6d4bc6ef9a0bca050994cfecbe3bf411
SHA512 4f1001ea81dee3edf8d9c54b7eb297d6f19b5a0dd7411ef1e3a909298a5b72474dcd16229674c1423d1f96c61092161794cdeaf6370fabda1a83424e2304d0b8
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlc:eSABNx6vb4RoI4pyjHYLhal01UoPXg
TLSH
T12B838C07ABA958E9E1206C70162D773493EF946F2B2497A38384FE4D9533DC5EC3614E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4100	yatcd.exe

Executes dropped EXE 1 IoCs

pid	Process
4100	yatcd.exe

Loads dropped DLL 1 IoCs

pid	Process
4560	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
4380	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2940	4560	WerFault.exe	93

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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yatcd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-07_795165adacd50242a5371b8c1465648f_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
4380	cmd.exe
1952	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1952	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2168	2026-08-07_795165adacd50242a5371b8c1465648f_elex_wannacry.exe
4100	yatcd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 4380	2168	2026-08-07_795165adacd50242a5371b8c1465648f_elex_wannacry.exe	89
PID 4380 wrote to memory of 1952	4380	cmd.exe	91
PID 4380 wrote to memory of 4100	4380	cmd.exe	92
PID 4100 wrote to memory of 4560	4100	yatcd.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-07_795165adacd50242a5371b8c1465648f_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-07_795165adacd50242a5371b8c1465648f_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\yatcd.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_795165adacd50242a5371b8c1465648f_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:4380
- - 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:1952
- - \??\c:\yatcd.exe
    c:\yatcd.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_795165adacd50242a5371b8c1465648f_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4100
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\gefwfxsg\fbdov.dll",DoVirusScan c:\yatcd.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4560
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 488
        5⤵
        Program crash
        
        PID:2940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4560 -ip 4560
1⤵
PID:4944

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

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

fbdov.dll

Path \??\c:\gefwfxsg\fbdov.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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yatcd.exe

Path \??\c:\yatcd.exe
Size 86KB
SHA256 75fcbb5365915ac3ee6cea897365db3404c4cc891009d3ea80075aac0731fe97
MD5 5326b9a473edc376c28f626c1c450e6e
SHA1 bfeedc0c827800d989a56a91d9c8cb227e025663
SHA512 73f99f1b6bb1b38d86e1ba0ac86bed3b5878c94c30449ad1e333d7236de7f3584e1347e1a905ad47f3c0e3c752f875e8f1946f7ae1bbdc33762e9ef14bcbc831
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlY:eSABNx6vb4RoI4pyjHYLhal01UoPX8
TLSH
T112838D07ABA958E9E1206C70162D773493EF946F3B2497A38384FE4DA533DC5EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2168-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2168-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4100-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4560-9-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads