6b97421bd4fbe1bdfe2fe040f11788dc664faa5e4b432e8ff30a7cc20ff551a5

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
18/04/2026, 10:57

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General

Target
2026-04-18_0562a5ac6eaf4bd3005ca1ad0cb3156f_elex_wannacry.exe
Size 681KB
Sample260418-m2ncfaf16s
SHA256 6b97421bd4fbe1bdfe2fe040f11788dc664faa5e4b432e8ff30a7cc20ff551a5
MD5 0562a5ac6eaf4bd3005ca1ad0cb3156f
SHA1 17b61bf9c313f18bc40d017c39c81da096ba823c
SHA512 50ed5be6fbe1019ac3aaec050c814d227575868d790e5e21a904aa1d0ed7c384a49d3eb2e32698696433c9a95ffd6574a4968a5def0b9fb1b4cfd3fae5f5ae1b
SSDEEP 12288:cSfSps28tL4l4Xzqs4f2S3heRW2ULNLw6VNCsJlgDrEk:f0O0WX1rSxIW2oNxmYlgDrEk
TLSH
T1C5E4F11272C899A6CC096432CB62A678F6E7CDC84F228EE75384763D8B36584D73F574
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Custom signature

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral1/memory/4996-17-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4996-15-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4996-20-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4996-22-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4996-24-0x0000000010000000-0x000000001005F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Deletes itself 1 IoCs

pid	Process
4808	eufqmtq.exe

Executes dropped EXE 2 IoCs

pid	Process
4808	eufqmtq.exe
4996	ohzdygw.exe

Loads dropped DLL 1 IoCs

pid	Process
4996	ohzdygw.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-721190819-434563495-2007910846-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Disp = "c:\\Program Files\\wwsoscbmc\\ohzdygw.exe \"c:\\Program Files\\wwsoscbmc\\ohzdygw.dll\",Dispatch"	ohzdygw.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\k:	ohzdygw.exe
File opened (read-only)	\??\m:	ohzdygw.exe
File opened (read-only)	\??\p:	ohzdygw.exe
File opened (read-only)	\??\v:	ohzdygw.exe
File opened (read-only)	\??\l:	ohzdygw.exe
File opened (read-only)	\??\o:	ohzdygw.exe
File opened (read-only)	\??\s:	ohzdygw.exe
File opened (read-only)	\??\w:	ohzdygw.exe
File opened (read-only)	\??\x:	ohzdygw.exe
File opened (read-only)	\??\y:	ohzdygw.exe
File opened (read-only)	\??\z:	ohzdygw.exe
File opened (read-only)	\??\a:	ohzdygw.exe
File opened (read-only)	\??\b:	ohzdygw.exe
File opened (read-only)	\??\e:	ohzdygw.exe
File opened (read-only)	\??\g:	ohzdygw.exe
File opened (read-only)	\??\h:	ohzdygw.exe
File opened (read-only)	\??\n:	ohzdygw.exe
File opened (read-only)	\??\r:	ohzdygw.exe
File opened (read-only)	\??\t:	ohzdygw.exe
File opened (read-only)	\??\i:	ohzdygw.exe
File opened (read-only)	\??\j:	ohzdygw.exe
File opened (read-only)	\??\q:	ohzdygw.exe
File opened (read-only)	\??\u:	ohzdygw.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	ohzdygw.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\wwsoscbmc	eufqmtq.exe
File created	\??\c:\Program Files\wwsoscbmc\ohzdygw.dll	eufqmtq.exe
File created	\??\c:\Program Files\wwsoscbmc\ohzdygw.exe	eufqmtq.exe
File opened for modification	\??\c:\Program Files\wwsoscbmc\ohzdygw.exe	eufqmtq.exe

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	2026-04-18_0562a5ac6eaf4bd3005ca1ad0cb3156f_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	eufqmtq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ohzdygw.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
4580	PING.EXE
4880	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ohzdygw.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ohzdygw.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4580	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4996	ohzdygw.exe
4996	ohzdygw.exe
4996	ohzdygw.exe
4996	ohzdygw.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	ohzdygw.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4752	2026-04-18_0562a5ac6eaf4bd3005ca1ad0cb3156f_elex_wannacry.exe
4808	eufqmtq.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 4880	4752	2026-04-18_0562a5ac6eaf4bd3005ca1ad0cb3156f_elex_wannacry.exe	84
PID 4880 wrote to memory of 4580	4880	cmd.exe	86
PID 4880 wrote to memory of 4808	4880	cmd.exe	87
PID 4808 wrote to memory of 4996	4808	eufqmtq.exe	88

C:\Users\Admin\AppData\Local\Temp\2026-04-18_0562a5ac6eaf4bd3005ca1ad0cb3156f_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-18_0562a5ac6eaf4bd3005ca1ad0cb3156f_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\eufqmtq.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-18_0562a5ac6eaf4bd3005ca1ad0cb3156f_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4880
- - 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:4580
- - C:\Users\Admin\AppData\Local\Temp\eufqmtq.exe
    C:\Users\Admin\AppData\Local\Temp\\eufqmtq.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-18_0562a5ac6eaf4bd3005ca1ad0cb3156f_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:4808
  - - \??\c:\Program Files\wwsoscbmc\ohzdygw.exe
      "c:\Program Files\wwsoscbmc\ohzdygw.exe" "c:\Program Files\wwsoscbmc\ohzdygw.dll",Dispatch C:\Users\Admin\AppData\Local\Temp\eufqmtq.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4996

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

ohzdygw.exe

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

Submit Download

eufqmtq.exe

Path C:\Users\Admin\AppData\Local\Temp\eufqmtq.exe
Size 681KB
SHA256 90c6f4f490fd8e12dbed1cea0c1ab2a2ac9cdcc6131212d3e7cf5a5e640207a6
MD5 fdb2362cd66137a8d7123e6261cf51c7
SHA1 224cbb52deb247b1ad80611100ce5b502a1b5b1b
SHA512 8eab85beb02280db341f99bc03f1a0390a1a745e0b752879af47571c5aa36889aaf09edefa3628cec4d3a7a70e3148421af706082febff2e8f540030a5078a08
SSDEEP 12288:cSfSps28tL4l4Xzqs4f2S3heRW2ULNLw6VNCsJlgDrEQ:f0O0WX1rSxIW2oNxmYlgDrEQ
TLSH
T15EE4F11272C899A6CC096432CB62A678F6E7CDC84F228EE75384763D8B36584D73F574
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ohzdygw.dll

Path \??\c:\Program Files\wwsoscbmc\ohzdygw.dll
Size 210KB
SHA256 641106fd93b5937ba95796410a1f3520f8a5907ce9bed31feadcbda3aacb8ea7
MD5 ee190b030edd0c0ab9a05688b074d3c3
SHA1 5c6c0ad7c511bc20414d78069cbfded7c24455b2
SHA512 b00f2f8d00b7acd612d272a1c8b32c8e5bc19a74d9c11df34bf861ca1eb602c1460e670f65213e864d253de1060a981cf97143de4d3e20f443c1aa9d4de87799
SSDEEP 3072:MI/38csWuZwCMZ9kfuZJR+go6+n05NkxbmUVg/GXJb8Rps6T+p:9MIuSrZJR+gopn6sCShm+p
TLSH
T18124F14EF980DF6BC80E0534D86F6675ADA1294B5E21836F2B4CE30E3DF2B381516E95
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4752-0-0x0000000000400000-0x00000000004A0000-memory.dmp

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memory/4752-2-0x0000000000400000-0x00000000004A0000-memory.dmp

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memory/4808-10-0x0000000000400000-0x00000000004A0000-memory.dmp

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memory/4996-17-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/4996-15-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/4996-14-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/4996-19-0x0000000000C90000-0x0000000000C92000-memory.dmp

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memory/4996-20-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/4996-22-0x0000000010000000-0x000000001005F000-memory.dmp

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memory/4996-24-0x0000000010000000-0x000000001005F000-memory.dmp

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