73ac528b78e6df274d5f32dc5d2fc44dc37c3018d9ba757155a089ab4f66bef1

General

Target
2026-09-09_e53ff621f4ccb35c3bec4551c02dd9a7_elex_wannacry.exe
Size 85KB
Sample260909-md7feabg89
SHA256 73ac528b78e6df274d5f32dc5d2fc44dc37c3018d9ba757155a089ab4f66bef1
MD5 e53ff621f4ccb35c3bec4551c02dd9a7
SHA1 cc46e54826aea1903dcc25bc24ff07a4e62538dc
SHA512 9f44cc495cc52d793835845756e1748944c17412bd4e7de0b4b0676e8a85d8a42c13ffe04e606fc4450d3b52091912ed834fa9a5a9794bca5cd948232d8cd4b3
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlz:eSABNx6vb4RoI4pyjHYLhal01UoPXn
TLSH
T14E839D0BABAA58D9E1206C70162D377593EF946F3B2497A38384FE4D9533DC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
5052	isbyjlvzm.exe

Executes dropped EXE 1 IoCs

pid	Process
5052	isbyjlvzm.exe

Loads dropped DLL 1 IoCs

pid	Process
4980	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
2112	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4840	4980	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	isbyjlvzm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-09_e53ff621f4ccb35c3bec4551c02dd9a7_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

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
2112	cmd.exe
2596	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2596	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1084	2026-09-09_e53ff621f4ccb35c3bec4551c02dd9a7_elex_wannacry.exe
5052	isbyjlvzm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1084 wrote to memory of 2112	1084	2026-09-09_e53ff621f4ccb35c3bec4551c02dd9a7_elex_wannacry.exe	89
PID 2112 wrote to memory of 2596	2112	cmd.exe	91
PID 2112 wrote to memory of 5052	2112	cmd.exe	92
PID 5052 wrote to memory of 4980	5052	isbyjlvzm.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-09-09_e53ff621f4ccb35c3bec4551c02dd9a7_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-09_e53ff621f4ccb35c3bec4551c02dd9a7_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\isbyjlvzm.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-09_e53ff621f4ccb35c3bec4551c02dd9a7_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:2112
- - 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:2596
- - \??\c:\isbyjlvzm.exe
    c:\isbyjlvzm.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-09_e53ff621f4ccb35c3bec4551c02dd9a7_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5052
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\tmumyw\jpgws.dll",DoVirusScan c:\isbyjlvzm.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4980
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4980 -s 476
        5⤵
        Program crash
        
        PID:4840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4980 -ip 4980
1⤵
PID:5720

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

isbyjlvzm.exe

Path \??\c:\isbyjlvzm.exe
Size 85KB
SHA256 a8f0dc034f505041cf7bcf7a89aa17cd7e7b9ce33d08b483db20b9fd65090814
MD5 e0b4e7bd67e152ed568be060087a7c71
SHA1 94d6c531b13221f0c42280b378ee7208d55d7db7
SHA512 46ee1a65b68b2399597306e26607e0e2ba6e1f7d151861d17f4a2db8553965d22af24bbf9cf0648c102053af48da8e00dca3589598c4933a233320c16f6be102
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlp:eSABNx6vb4RoI4pyjHYLhal01UoPX1
TLSH
T12D839D07ABAA58D9E1206C70162D377493EF986F3B2497A38344FE4D9533DC1EC3A14A
MD5 SHA1 SHA512 SSDEEP TLSH

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jpgws.dll

Path \??\c:\tmumyw\jpgws.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/1084-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/1084-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4980-9-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/5052-6-0x0000000000400000-0x0000000000417000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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