b395fb0bcbc9c5190ef01318207cb8efdc5b3af030aad7650f3e932dc7bfe24f

General

Target
2026-08-04_5444b6494c2bd1f97dd8c9847e623432_elex_wannacry.exe
Size 88KB
Sample260804-s7hxssdb47
SHA256 b395fb0bcbc9c5190ef01318207cb8efdc5b3af030aad7650f3e932dc7bfe24f
MD5 5444b6494c2bd1f97dd8c9847e623432
SHA1 278426ec850067daa60971494ec2c1e17bb00770
SHA512 18f95754707a78fe48996030c41b62ee04fe2766b4f0a9a75ca370c1e3bcfd34f103486e39283fa9ee078ea4a65617a73b2a7a92fe30f91adeba4674066a1c24
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzly:eSABNx6vb4RoI4pyjHYLhal01UoPXG
TLSH
T1B4938D47ABA598E5E0206C70061D673493EE946F3B2597A34384FE4DE533DC5EC3618E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4620	yshcp.exe

Executes dropped EXE 1 IoCs

pid	Process
4620	yshcp.exe

Loads dropped DLL 1 IoCs

pid	Process
4116	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
4760	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3788	4116	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	yshcp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-04_5444b6494c2bd1f97dd8c9847e623432_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
4760	cmd.exe
4476	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4476	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2868	2026-08-04_5444b6494c2bd1f97dd8c9847e623432_elex_wannacry.exe
4620	yshcp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 4760	2868	2026-08-04_5444b6494c2bd1f97dd8c9847e623432_elex_wannacry.exe	89
PID 4760 wrote to memory of 4476	4760	cmd.exe	91
PID 4760 wrote to memory of 4620	4760	cmd.exe	92
PID 4620 wrote to memory of 4116	4620	yshcp.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-04_5444b6494c2bd1f97dd8c9847e623432_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-04_5444b6494c2bd1f97dd8c9847e623432_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\yshcp.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-04_5444b6494c2bd1f97dd8c9847e623432_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:4760
- - 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:4476
- - \??\c:\yshcp.exe
    c:\yshcp.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-04_5444b6494c2bd1f97dd8c9847e623432_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4620
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\vbzluq\mwysb.dll",DoVirusScan c:\yshcp.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4116
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 484
        5⤵
        Program crash
        
        PID:3788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 392 -p 4116 -ip 4116
1⤵
PID:3312

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

mwysb.dll

Path \??\c:\vbzluq\mwysb.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

Submit Download

yshcp.exe

Path \??\c:\yshcp.exe
Size 89KB
SHA256 2a26f586ec557bc511c3aefab027e375ab5d28350df25cb427ee73d4e84e2f35
MD5 c33680387e0719e3f3401631be8ed48c
SHA1 b530763923a50dee328da0cbea4512a36996cf02
SHA512 9a63636a0522c4718d108db14d4aa4d4a00f4c8e915acb7b8c68c4bfd05a21fba76e558decaf55c42637bda4381ea509793035be8cf42bffc4c811916366398d
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzl4:eSABNx6vb4RoI4pyjHYLhal01UoPX8
TLSH
T119938C47ABA598E5E0206C70061D673493EE986F3B2497A38384FE4DE533DD5EC3618E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2868-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2868-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4116-9-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/4620-6-0x0000000000400000-0x0000000000417000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads