13f047a44e19778f67983e5ca09cffd7db2d444fb4ab422413d0247958556e38

General

Target
2026-08-01_f1dd3e48cbc1a0a14c0fa4562e29fb74_elex_wannacry.exe
Size 86KB
Sample260802-ec8m3stfje
SHA256 13f047a44e19778f67983e5ca09cffd7db2d444fb4ab422413d0247958556e38
MD5 f1dd3e48cbc1a0a14c0fa4562e29fb74
SHA1 fad7fb5ea48d484c3d6dd0a489a8d8a9091cc824
SHA512 ca2814dbf746bd27c28d2b98d0f005d73e58b0a4521d03996bfe9068cb20ea18b299a9d640962d9ed78f3a196d4adf671e54b0a5dd60f4b737192b00ba0902a4
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzl7:eSABNx6vb4RoI4pyjHYLhal01UoPX
TLSH
T1DB838C07ABAA58E9E1206C70162D373593EF946F3B2597A38384FE4D9533DC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
5860	yywbx.exe

Executes dropped EXE 1 IoCs

pid	Process
5860	yywbx.exe

Loads dropped DLL 1 IoCs

pid	Process
2340	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
3496	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2556	2340	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	yywbx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-01_f1dd3e48cbc1a0a14c0fa4562e29fb74_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

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
3496	cmd.exe
3044	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3044	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2692	2026-08-01_f1dd3e48cbc1a0a14c0fa4562e29fb74_elex_wannacry.exe
5860	yywbx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 3496	2692	2026-08-01_f1dd3e48cbc1a0a14c0fa4562e29fb74_elex_wannacry.exe	89
PID 3496 wrote to memory of 3044	3496	cmd.exe	91
PID 3496 wrote to memory of 5860	3496	cmd.exe	92
PID 5860 wrote to memory of 2340	5860	yywbx.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-01_f1dd3e48cbc1a0a14c0fa4562e29fb74_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-01_f1dd3e48cbc1a0a14c0fa4562e29fb74_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\yywbx.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-01_f1dd3e48cbc1a0a14c0fa4562e29fb74_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:3496
- - 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:3044
- - \??\c:\yywbx.exe
    c:\yywbx.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-01_f1dd3e48cbc1a0a14c0fa4562e29fb74_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5860
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\xawoludld\uwboaqg.dll",DoVirusScan c:\yywbx.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:2340
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2340 -s 480
        5⤵
        Program crash
        
        PID:2556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2340 -ip 2340
1⤵
PID:4580

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

Replay Monitor

Loading Replay Monitor...

Downloads

uwboaqg.dll

Path \??\c:\xawoludld\uwboaqg.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

Submit Download

yywbx.exe

Path \??\c:\yywbx.exe
Size 86KB
SHA256 d35253676a12281c2033ede77b6164310d7419526fdbf4e8e3a677f16b1e6425
MD5 05bdde8cb2a9f54d900bff1ec8e0e06e
SHA1 e06fc5caf81034a7a2e981b7a1e54eb2566e698a
SHA512 dd141f5e44293fe1add854725437b50fb33ea47b1b1cb15e1f560250693f1a1f6e733cfb9506cefed01cb145a8a3b7171871c09557264467ba10f4679f147c16
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlc:eSABNx6vb4RoI4pyjHYLhal01UoPXyv
TLSH
T110939C07ABA958E9E1206C70162D373593EF986F3B2597A38384FE4D9533DC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2340-9-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/2692-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/2692-2-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/5860-6-0x0000000000400000-0x0000000000417000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads