3bfd2f9b666cbe725b86fbb6666b0644513cd04137e5b62d470311572a89ba8e

General

Target
2026-08-09_73558639e9201562570227d0fcbd6098_elex_wannacry.exe
Size 86KB
Sample260809-ep14rszeka
SHA256 3bfd2f9b666cbe725b86fbb6666b0644513cd04137e5b62d470311572a89ba8e
MD5 73558639e9201562570227d0fcbd6098
SHA1 55e52309fbfd33c1550ea7ee9da96ee2834a49c3
SHA512 07c7a9b18bed5327a65d477de11e27d35498587e1a47e47655233312b022f9abaa9c587cf19123349e3385e90ce65761ba61c69a74e18a136809aabe9941fe19
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzl8:eSABNx6vb4RoI4pyjHYLhal01UoPXw
TLSH
T1C6838C07ABA958E9E1206870162D373593EF986F3B2497A38384FE4D9533DC1EC3614E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4112	zeijy.exe

Executes dropped EXE 1 IoCs

pid	Process
4112	zeijy.exe

Loads dropped DLL 1 IoCs

pid	Process
5128	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
3164	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5756	5128	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	2026-08-09_73558639e9201562570227d0fcbd6098_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	zeijy.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
3164	cmd.exe
5440	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5440	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4300	2026-08-09_73558639e9201562570227d0fcbd6098_elex_wannacry.exe
4112	zeijy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4300 wrote to memory of 3164	4300	2026-08-09_73558639e9201562570227d0fcbd6098_elex_wannacry.exe	89
PID 3164 wrote to memory of 5440	3164	cmd.exe	91
PID 3164 wrote to memory of 4112	3164	cmd.exe	92
PID 4112 wrote to memory of 5128	4112	zeijy.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-09_73558639e9201562570227d0fcbd6098_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_73558639e9201562570227d0fcbd6098_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4300
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\zeijy.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_73558639e9201562570227d0fcbd6098_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:3164
- - 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:5440
- - \??\c:\zeijy.exe
    c:\zeijy.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_73558639e9201562570227d0fcbd6098_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4112
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\eaaqrceem\mvrfzq.dll",DoVirusScan c:\zeijy.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:5128
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 5128 -s 480
        5⤵
        Program crash
        
        PID:5756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5128 -ip 5128
1⤵
PID:2744

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

mvrfzq.dll

Path \??\c:\eaaqrceem\mvrfzq.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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zeijy.exe

Path \??\c:\zeijy.exe
Size 86KB
SHA256 d517975181b3e530ce26de3a3b3e123a64cda312816ff97f519aaa716fac0166
MD5 21dcffad75db9d9ac8d268f8549d7b34
SHA1 6c7c43f2b2871b45f482069ce724909de7f5d7c4
SHA512 54e6e6b33ae28c998bf39c34659a73f40d7222b33f948f89b0ae2c7f1b1f151b66ec704bda2316ebc8f5bf467d4e572e969b4e0c6354bffc07c6959b8f8186a8
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlH:eSABNx6vb4RoI4pyjHYLhal01UoPXL
TLSH
T1D9838C07ABA958E9E1206C70162D373597EF986F3B2497A38384FE4D9533DC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4112-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4300-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4300-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5128-9-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads