46044608e5f4d3ec55feb5e3a247a8fe21796e6acd7c022416e40863d37947ef

General

Target
2026-07-31_f3e4e74d6546249659ec6f722d9e5bad_elex_wannacry.exe
Size 85KB
Sample260731-mtardagh73
SHA256 46044608e5f4d3ec55feb5e3a247a8fe21796e6acd7c022416e40863d37947ef
MD5 f3e4e74d6546249659ec6f722d9e5bad
SHA1 8fdfadf7baa3f88196989bdc6f0253dd88b9cd3d
SHA512 40080281ccba1c8a4b866729777d5e2461452d9ff84823ccea7f461422d53813d60ebe33a05eca82c586d81b1d36dd5ae1952a0a15f4d904b03321351de343dc
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzly:eSABNx6vb4RoI4pyjHYLhal01UoPX+
TLSH
T1D7838C07ABAA58E9E1206870162D373593EF946F3B2597A38384FE4D9533DC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
204	xnukux.exe

Executes dropped EXE 1 IoCs

pid	Process
204	xnukux.exe

Loads dropped DLL 1 IoCs

pid	Process
5400	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
1464	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2532	5400	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	xnukux.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-31_f3e4e74d6546249659ec6f722d9e5bad_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
1464	cmd.exe
440	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
440	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1308	2026-07-31_f3e4e74d6546249659ec6f722d9e5bad_elex_wannacry.exe
204	xnukux.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 1464	1308	2026-07-31_f3e4e74d6546249659ec6f722d9e5bad_elex_wannacry.exe	89
PID 1464 wrote to memory of 440	1464	cmd.exe	91
PID 1464 wrote to memory of 204	1464	cmd.exe	92
PID 204 wrote to memory of 5400	204	xnukux.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-31_f3e4e74d6546249659ec6f722d9e5bad_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-31_f3e4e74d6546249659ec6f722d9e5bad_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\xnukux.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-31_f3e4e74d6546249659ec6f722d9e5bad_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:1464
- - 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:440
- - \??\c:\xnukux.exe
    c:\xnukux.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-31_f3e4e74d6546249659ec6f722d9e5bad_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:204
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\wolsg\ziwjj.dll",DoVirusScan c:\xnukux.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:5400
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 5400 -s 484
        5⤵
        Program crash
        
        PID:2532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5400 -ip 5400
1⤵
PID:3760

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

ziwjj.dll

Path \??\c:\wolsg\ziwjj.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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xnukux.exe

Path \??\c:\xnukux.exe
Size 86KB
SHA256 1827d83729ae8470cd75fee4eadf9c6ab5ff89bfc0a31543cd1c7f46497acca4
MD5 3177fcac50c5b1b23a693ab39b0539d3
SHA1 0ecb073548ebd2f080e399020f1eed1b21e6bccc
SHA512 6bc09a44de5358c5b7965edaa53678e4c08dee8212b3836b23cee32678cb88a89f8780c01239b5d848e706eac74d327f6d518d4211842acc3de39a992687a3cb
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlu:eSABNx6vb4RoI4pyjHYLhal01UoPXq
TLSH
T1FD839C07ABAA58E9E1206C70162D373593EF946F3B2597A38384FE4D9533DC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/204-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/1308-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/1308-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5400-9-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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