137b92d87ed73d44753048b436c0414b79a6fe6f4bfd83ddac3d4c774a6190d0

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
23/04/2026, 11:33

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General

Target
2026-04-23_dc276e4e18a0322298621ab512822d3d_elex_wannacry.exe
Size 325KB
Sample260423-nn71csbv5x
SHA256 137b92d87ed73d44753048b436c0414b79a6fe6f4bfd83ddac3d4c774a6190d0
MD5 dc276e4e18a0322298621ab512822d3d
SHA1 2ee60f9549208caf91342b94af18184adc946977
SHA512 1dcf9cc8d31dc805388b835dc5104a3eb080082f52c0b33d80c545b420c9bd14c492b93c4e23e6f27eff9ba257886b8be673c51fcdd02e599b3ce6fa68bb9b2f
SSDEEP 3072:FRoTSgQHfT5h+T3GuGYeO6bUT3JyDhkUAyLj6lgvqcOoyqsu/T2JS5073VLb:FRoSgWtkT3sO6bSZMhRrygvjpsASJV7h
TLSH
T18164AF1275D0C8EAC1C53973CD65B6F4E3E9CEE8C9329A6B17E43E4C7E3A5048712269
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2412	zigtd.exe

Executes dropped EXE 2 IoCs

pid	Process
2412	zigtd.exe
436	budacaull.exe

Loads dropped DLL 1 IoCs

pid	Process
436	budacaull.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\czfsd\budacaull.exe	zigtd.exe
File opened for modification	\??\c:\Program Files\czfsd	zigtd.exe
File created	\??\c:\Program Files\czfsd\budacaull.dll	zigtd.exe
File created	\??\c:\Program Files\czfsd\budacaull.exe	zigtd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2600	436	WerFault.exe	90

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	2026-04-23_dc276e4e18a0322298621ab512822d3d_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	zigtd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	budacaull.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
3472	cmd.exe
3932	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3932	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3768	2026-04-23_dc276e4e18a0322298621ab512822d3d_elex_wannacry.exe
2412	zigtd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3768 wrote to memory of 3472	3768	2026-04-23_dc276e4e18a0322298621ab512822d3d_elex_wannacry.exe	86
PID 3472 wrote to memory of 3932	3472	cmd.exe	88
PID 3472 wrote to memory of 2412	3472	cmd.exe	89
PID 2412 wrote to memory of 436	2412	zigtd.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-04-23_dc276e4e18a0322298621ab512822d3d_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-23_dc276e4e18a0322298621ab512822d3d_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3768
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\zigtd.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-23_dc276e4e18a0322298621ab512822d3d_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3472
- - 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:3932
- - C:\Users\Admin\AppData\Local\Temp\zigtd.exe
    C:\Users\Admin\AppData\Local\Temp\\zigtd.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-23_dc276e4e18a0322298621ab512822d3d_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2412
  - - \??\c:\Program Files\czfsd\budacaull.exe
      "c:\Program Files\czfsd\budacaull.exe" "c:\Program Files\czfsd\budacaull.dll",GetBMP C:\Users\Admin\AppData\Local\Temp\zigtd.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:436
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 416
        5⤵
        Program crash
        
        PID:2600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 436 -ip 436
1⤵
PID:4588

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

budacaull.dll

Path C:\Program Files\czfsd\budacaull.dll
Size 143KB
SHA256 1a1d3c7e76b290d198d1606238407c6174488627d336afe681a988dea2300fc9
MD5 e2e1766f30062a0156799afdbeff2969
SHA1 cf82a4ac83fc509cb751646602a296742c76da4f
SHA512 919bb8e030acb5586b90c957e1c08184d86097026389a371c3cdd96427487ac5a88228038f3df81e107bbe037ff3502042b61c74ae9c8efbe5149e554d3872ff
SSDEEP 1536:6UmjB4YGcf3L2bo6OJVyDLIjfK+sOiFd2BQG8dk0tJTaNlZffpgKNfF:fdYXSqEL8K+sP2BuHJTaNlhfVNt
TLSH
T105E312917C9F1964D02106B3069896791EFE493AE6EE57E37A6CF86B4305A16F30F00F
MD5 SHA1 SHA512 SSDEEP TLSH

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budacaull.exe

Path C:\Program Files\czfsd\budacaull.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

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zigtd.exe

Path C:\Users\Admin\AppData\Local\Temp\zigtd.exe
Size 325KB
SHA256 e819109b7ec95ee71e4fd72c2b0a5233d98bf486c4c911b706ab9b6407558a52
MD5 14e953489cd67c52595271f820403df2
SHA1 9b27196a4f1d7d5f881241d702d4bec4f123b9f7
SHA512 bbf1872efbb8d09c58e390f751829906e533a78764b9cee3c200423891568dc9dd61d7462f65ff0aad76d09b192935ef85f5bedd2fc250e76179d439afad262a
SSDEEP 3072:FRoTSgQHfT5h+T3GuGYeO6bUT3JyDhkUAyLj6lgvqcOoyqsu/T2JS5073VLg:FRoSgWtkT3sO6bSZMhRrygvjpsASJV7e
TLSH
T19D64AF1375D0C8EAC1853973CD65B6F4E3E9CEE8C9329A6B17E83E4C7E3A5048711269
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/436-16-0x0000000010047000-0x000000001006D000-memory.dmp

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memory/436-15-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2412-6-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/2412-12-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/3768-0-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/3768-2-0x0000000000400000-0x000000000044D000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads