761dfd8711998c3155e732557bf12180b7f3933f164a6bb46901c3ae1146f011

General

Target
2026-08-24_c491bac5a8eff386396b1eb97af869f0_elex_wannacry.exe
Size 96KB
Sample260825-b8py3a1yet
SHA256 761dfd8711998c3155e732557bf12180b7f3933f164a6bb46901c3ae1146f011
MD5 c491bac5a8eff386396b1eb97af869f0
SHA1 2038dba1ff88fa1dd039b780ab0b39011d459821
SHA512 07c5caa0fc837e9f103573c44a1675d404e056967ba0ec654a7bc58ca6eab2e92031734285905445f89e2c68bc313a2f8a5c2beae5f637ae1e9b5cf4b1a8590d
SSDEEP 1536:VSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlf:QSABNx6vb4RoI4pyjHYLhal01UoPXL
TLSH
T1D0A3AD0BABAA48D9E220AD70152D377597EF946F3B149B938348FE4D9533CC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
5580	mtary.exe

Executes dropped EXE 1 IoCs

pid	Process
5580	mtary.exe

Loads dropped DLL 1 IoCs

pid	Process
2352	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
4180	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4664	2352	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	2026-08-24_c491bac5a8eff386396b1eb97af869f0_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	mtary.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
4180	cmd.exe
1020	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1020	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
808	2026-08-24_c491bac5a8eff386396b1eb97af869f0_elex_wannacry.exe
5580	mtary.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 4180	808	2026-08-24_c491bac5a8eff386396b1eb97af869f0_elex_wannacry.exe	89
PID 4180 wrote to memory of 1020	4180	cmd.exe	91
PID 4180 wrote to memory of 5580	4180	cmd.exe	92
PID 5580 wrote to memory of 2352	5580	mtary.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-24_c491bac5a8eff386396b1eb97af869f0_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-24_c491bac5a8eff386396b1eb97af869f0_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:808
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\mtary.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-24_c491bac5a8eff386396b1eb97af869f0_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:4180
- - 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:1020
- - \??\c:\mtary.exe
    c:\mtary.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-24_c491bac5a8eff386396b1eb97af869f0_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5580
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\yqgpfgvpq\osycu.dll",DoVirusScan c:\mtary.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:2352
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2352 -s 476
        5⤵
        Program crash
        
        PID:4664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2352 -ip 2352
1⤵
PID:1976

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

mtary.exe

Path \??\c:\mtary.exe
Size 96KB
SHA256 1f1e83ec03134df2d0e05df6bfcaf01accd3cb5acef28a77cc5f8bf6c48a1fab
MD5 a28a77c26907586545a2530b10bc8138
SHA1 d9063353b007f3f5f6114ef0341dee7a978c506c
SHA512 18ae9fddc74a1acbbcf94f80523e7c32cba49fa787c758a0eaf893e45f34c8052c867818f5f32fe24e6b055ad54bff11ae02b4d1cdc197d11896dfea30b75f94
SSDEEP 1536:VSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzl5:QSABNx6vb4RoI4pyjHYLhal01UoPXl
TLSH
T1ACA3AD0BABAA48D9E220AD70152D377597EF946F3B149B938348FE4D9533CC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

osycu.dll

Path \??\c:\yqgpfgvpq\osycu.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/808-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/808-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2352-9-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/5580-6-0x0000000000400000-0x0000000000417000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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