5d3b69a73df141495bfbc5a2f6ba2804516816677dcad503e1492b0c45bf8bd3

General

Target
2026-09-08_14d9504ee9adc6af0d2403cf8f0472c2_elex_wannacry.exe
Size 88KB
Sample260910-h8eawsga69
SHA256 5d3b69a73df141495bfbc5a2f6ba2804516816677dcad503e1492b0c45bf8bd3
MD5 14d9504ee9adc6af0d2403cf8f0472c2
SHA1 8be698c61387a1b6dde3d8f131ce30e50aab5f32
SHA512 0ba466492413eccca6392bd44f8dcc5d27b1a7c8509e5714244535445ac6ce35d07b02d9f049466538ccaad87447ce17998ba20a0ae2e0622b9421c8ea8bbfee
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlP:eSABNx6vb4RoI4pyjHYLhal01UoPXr
TLSH
T13F938C07ABAA58E9E1206870152D373597EF98AF3B2597A38344FE4D9133DC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
5632	buhzg.exe

Executes dropped EXE 1 IoCs

pid	Process
5632	buhzg.exe

Loads dropped DLL 1 IoCs

pid	Process
4236	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
4272	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5404	4236	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	2026-09-08_14d9504ee9adc6af0d2403cf8f0472c2_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	buhzg.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
4272	cmd.exe
4140	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4140	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4436	2026-09-08_14d9504ee9adc6af0d2403cf8f0472c2_elex_wannacry.exe
5632	buhzg.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 4272	4436	2026-09-08_14d9504ee9adc6af0d2403cf8f0472c2_elex_wannacry.exe	89
PID 4272 wrote to memory of 4140	4272	cmd.exe	91
PID 4272 wrote to memory of 5632	4272	cmd.exe	92
PID 5632 wrote to memory of 4236	5632	buhzg.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-09-08_14d9504ee9adc6af0d2403cf8f0472c2_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-08_14d9504ee9adc6af0d2403cf8f0472c2_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4436
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\buhzg.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-08_14d9504ee9adc6af0d2403cf8f0472c2_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:4272
- - 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:4140
- - \??\c:\buhzg.exe
    c:\buhzg.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-08_14d9504ee9adc6af0d2403cf8f0472c2_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5632
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\mtxqmmt\xnukux.dll",DoVirusScan c:\buhzg.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4236
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4236 -s 476
        5⤵
        Program crash
        
        PID:5404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4236 -ip 4236
1⤵
PID:4220

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

buhzg.exe

Path \??\c:\buhzg.exe
Size 88KB
SHA256 37c7433c8725533953c61141b6e7ed5f925e4a445dec4a41efac7d8a4bd09b05
MD5 923fbf6d965bc8993050a840b4fa6e56
SHA1 75252cbc25b86635dd7121480f6debd584539e93
SHA512 b793610c3d4bc569e17bf1613dcb2329d27aedff96a67422ca5b84f829c0efbf449a788b3997208db098f8112d166e8597acfc0000c3467efef5d586160d0b93
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlv:eSABNx6vb4RoI4pyjHYLhal01UoPXT
TLSH
T114938D07ABA958E9E1206C70162D373597EF98AF3B2597A38344FE4D9133DC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

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xnukux.dll

Path \??\c:\mtxqmmt\xnukux.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/4236-9-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/4436-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/4436-2-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/5632-6-0x0000000000400000-0x0000000000417000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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