5226f8091d6eaed70eb8a5da52f6113705379c77944f97844e1016fb67df8235

General

Target
2026-09-28_a8d63f5f3ea8d0ed6d9279ea2b49b925_elex_feodo_wannacry.exe
Size 97KB
Sample260928-p9qtmsvbme
SHA256 5226f8091d6eaed70eb8a5da52f6113705379c77944f97844e1016fb67df8235
MD5 a8d63f5f3ea8d0ed6d9279ea2b49b925
SHA1 54229bff0c07c0d7ef9aea46a48df81d9724e15a
SHA512 53981ec58aad02e86c2cda0060eea2d5b228f008c787f992bbdeba74e905bb9c5606f0f14b200992990843528760075d3c7ebc61e04d13fb167c0cc2963ff36e
SSDEEP 1536:VSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlk:QSABNx6vb4RoI4pyjHYLhal01UoPX
TLSH
T100A3AE0BABAA48D9E120AD71152D3B7597FF886E3B1497938348FE4D9433DD0EC3614A
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
2812	iudnh.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	iudnh.exe

Loads dropped DLL 1 IoCs

pid	Process
4288	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
812	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4120	4288	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	2026-09-28_a8d63f5f3ea8d0ed6d9279ea2b49b925_elex_feodo_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	iudnh.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
812	cmd.exe
2072	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2072	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4720	2026-09-28_a8d63f5f3ea8d0ed6d9279ea2b49b925_elex_feodo_wannacry.exe
2812	iudnh.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 812	4720	2026-09-28_a8d63f5f3ea8d0ed6d9279ea2b49b925_elex_feodo_wannacry.exe	87
PID 812 wrote to memory of 2072	812	cmd.exe	90
PID 812 wrote to memory of 2812	812	cmd.exe	91
PID 2812 wrote to memory of 4288	2812	iudnh.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-09-28_a8d63f5f3ea8d0ed6d9279ea2b49b925_elex_feodo_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-28_a8d63f5f3ea8d0ed6d9279ea2b49b925_elex_feodo_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\iudnh.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-28_a8d63f5f3ea8d0ed6d9279ea2b49b925_elex_feodo_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:812
- - 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:2072
- - \??\c:\iudnh.exe
    c:\iudnh.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-28_a8d63f5f3ea8d0ed6d9279ea2b49b925_elex_feodo_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2812
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\dqelb\kxjyp.dll",DoVirusScan c:\iudnh.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4288
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 560
        5⤵
        Program crash
        
        PID:4120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4288 -ip 4288
1⤵
PID:1776

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

iudnh.exe

Path C:\iudnh.exe
Size 97KB
SHA256 b9666780bf1b55ccd6b39e83a30d3d80fd4edb7d370aeaca983e59483a9fcec9
MD5 873a5dbbcd2e6d9dde897f026121bb11
SHA1 3bed163bb399af21f0f573a92e5c3f3ebba3a034
SHA512 84ee08178b9b1b67b937680a82d88ced62c88a65427d027e52d292f930cb7d46add3e55386651cf5a2d03e5face263cf7977f527464d2014a26907b3b16b7e01
SSDEEP 1536:VSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlm:QSABNx6vb4RoI4pyjHYLhal01UoPXK
TLSH
T112A3AE0BABAA48D9E120AD70152D3B7597EF886E3B1497938348FE4D9433DD0EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

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kxjyp.dll

Path \??\c:\dqelb\kxjyp.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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memory/2812-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4288-10-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/4720-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/4720-2-0x0000000000400000-0x0000000000417000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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