ea035e905db83fb173c851b1e773ec7a5bd462b0565cd0fb1990007fc52506d8

General

Target
2026-08-08_94694af3c67eb9367e31692a73bca0dc_elex_wannacry.exe
Size 91KB
Sample260808-mv4e3svfrd
SHA256 ea035e905db83fb173c851b1e773ec7a5bd462b0565cd0fb1990007fc52506d8
MD5 94694af3c67eb9367e31692a73bca0dc
SHA1 47031dfc9181038eacaeaaa0c960717ba75319b1
SHA512 6dc82068e424fc6af8d50d81ce12be4b92a4c17112ef04191b420c1b7d3ac763400c380902ceed5589ea955c5ac467966d1f6353b938fb32786d908b3daedff9
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlM:eSABNx6vb4RoI4pyjHYLhal01UoPX
TLSH
T13C939E07ABA588D9E1207C70165D373497EE986E3B1897A39348EE4ED433DD1EC3618A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
664	yenfl.exe

Executes dropped EXE 1 IoCs

pid	Process
664	yenfl.exe

Loads dropped DLL 1 IoCs

pid	Process
4364	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
1944	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4216	4364	WerFault.exe	92

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	yenfl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-08_94694af3c67eb9367e31692a73bca0dc_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
1944	cmd.exe
5116	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5116	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3040	2026-08-08_94694af3c67eb9367e31692a73bca0dc_elex_wannacry.exe
664	yenfl.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 1944	3040	2026-08-08_94694af3c67eb9367e31692a73bca0dc_elex_wannacry.exe	88
PID 1944 wrote to memory of 5116	1944	cmd.exe	90
PID 1944 wrote to memory of 664	1944	cmd.exe	91
PID 664 wrote to memory of 4364	664	yenfl.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-08-08_94694af3c67eb9367e31692a73bca0dc_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-08_94694af3c67eb9367e31692a73bca0dc_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\yenfl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_94694af3c67eb9367e31692a73bca0dc_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:1944
- - 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:5116
- - \??\c:\yenfl.exe
    c:\yenfl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_94694af3c67eb9367e31692a73bca0dc_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:664
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\gdmsxyw\vavjpfa.dll",DoVirusScan c:\yenfl.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4364
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4364 -s 560
        5⤵
        Program crash
        
        PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4364 -ip 4364
1⤵
PID:3140

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

yenfl.exe

Path C:\yenfl.exe
Size 91KB
SHA256 3522b86bf40c9ad8f70420d1bbbf1225c5f4804542eb4247a3cb4c587b10dd1d
MD5 4f58972e0171555e37d6307f1a08a2ee
SHA1 97208543cc28043cbf59a47bbbbda9606c634c14
SHA512 e15fc4f34911f9045a137a074a2e88d9833dff2347b2792fa21b3fbac97a9156688931652863c66cb6680844599423c9a3b30378cca16788a47d52a7870a801b
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlF:eSABNx6vb4RoI4pyjHYLhal01UoPXR
TLSH
T1F4939E07AB6588D9F1207C70165D373097EE986E3B1897639388EE4ED473D91EC3A18A
MD5 SHA1 SHA512 SSDEEP TLSH

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vavjpfa.dll

Path \??\c:\gdmsxyw\vavjpfa.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/664-7-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/3040-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3040-2-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/4364-10-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads