juko | 89b2336afad0daaad35ad72084187dacf03f500fa2116976d3db31a45bf028d3

General

Target
2026-06-08_abfe94a7487864bfc8ba1b9142588f14_elex_wannacry.exe
Size 88KB
Sample260608-td8rssht3x
SHA256 89b2336afad0daaad35ad72084187dacf03f500fa2116976d3db31a45bf028d3
MD5 abfe94a7487864bfc8ba1b9142588f14
SHA1 c18fcf0f88386a9db8f4ba33a2a1380a197cb187
SHA512 b8109d99866bac975367647b006a17b1912aef5795f44c6f8f721fcdb1aebd1464498b282ca9ea551ef6c20a2ae57e82f9e0bcec02a0f7643218ebce0eec2e2b
SSDEEP 1536:5LsF2Kerc64sTiX2IV0DVk2Lbuzc/9yH8Ky9193jiT5l364KlVk937tgrF:5Ly2Kerc64CiGImRRLyzc/9yH8Ka193d
TLSH
T1D4934A8F73251205D9770979A2052F19AC3DADE78357A04CA7C4B1693833D3ACB3F6A9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery juko persistence trojan

Malware Config

Signatures

Family: Juko
Juko is a trojan written in C++.
trojan juko

Detects Juko 2 IoCs

resource	yara_rule
behavioral2/files/0x001f00000002b329-4.dat	family_juko
behavioral2/files/0x001b00000002b538-12.dat	family_juko

Executes dropped EXE 2 IoCs

pid	Process
5028	WINWORD.exe
2896	WINWORD.exe

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-1-5-21-2409539145-3342400454-2096821238-1000\Software\Microsoft\Windows\CurrentVersion\Run\WINWORD = "C:\\Users\\Admin\\AppData\\Roaming\\Mozilla\\WINWORD.exe -r"	WINWORD.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	WINWORD.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-08_abfe94a7487864bfc8ba1b9142588f14_elex_wannacry.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2448	PING.EXE
2972	PING.EXE
3928	cmd.exe
3184	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
2448	PING.EXE
2972	PING.EXE
3184	PING.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3248 wrote to memory of 5028	3248	2026-06-08_abfe94a7487864bfc8ba1b9142588f14_elex_wannacry.exe	80
PID 5028 wrote to memory of 3928	5028	WINWORD.exe	81
PID 3928 wrote to memory of 3184	3928	cmd.exe	83
PID 3928 wrote to memory of 2448	3928	cmd.exe	84
PID 3928 wrote to memory of 2972	3928	cmd.exe	85
PID 3928 wrote to memory of 2896	3928	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\2026-06-08_abfe94a7487864bfc8ba1b9142588f14_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-08_abfe94a7487864bfc8ba1b9142588f14_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
  "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" -r
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5028
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 2&del "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe"&ping 127.0.0.1 -n 2&rename "C:\Users\Admin\AppData\Roaming\Mozilla\00007BBA" WINWORD.exe&ping 127.0.0.1 -n 2&"C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:3928
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 2
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3184
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 2
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2448
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 2
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2972
  - - C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
      "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:2896

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

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

00007BBA

Path C:\Users\Admin\AppData\Roaming\Mozilla\00007BBA
Size 88KB
SHA256 38ba71872c8eba19ea7fae7cf11188d036a420d1abaeabfc82395d1ccb507872
MD5 e4d02f5b4f84ae149b05571a841fbcc6
SHA1 afaa40a90c9638d40d697d08326705088355287b
SHA512 f4ddb79fd30ba0a24129317ff5f6a0727ffbc1dda99f078eee4f9afc46206112abf29eb2baeacb24af5615713f4a97e9c271f8ffa5aba601cc743f2ed7b3a96b
SSDEEP 1536:5LsF2Kerc64sTiX2IV0DVk2Lbuzc/9yH8Ky9193jiT5l364KlVk937tgrq:5Ly2Kerc64CiGImRRLyzc/9yH8Ka193S
TLSH
T1FC934A8F73251205D9770979A2052F19AC3DADE78357A04CA7C4B1693833D3ACB3F6A9
MD5 SHA1 SHA512 SSDEEP TLSH

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WINWORD.exe

Path C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
Size 88KB
SHA256 89b2336afad0daaad35ad72084187dacf03f500fa2116976d3db31a45bf028d3
MD5 abfe94a7487864bfc8ba1b9142588f14
SHA1 c18fcf0f88386a9db8f4ba33a2a1380a197cb187
SHA512 b8109d99866bac975367647b006a17b1912aef5795f44c6f8f721fcdb1aebd1464498b282ca9ea551ef6c20a2ae57e82f9e0bcec02a0f7643218ebce0eec2e2b
SSDEEP 1536:5LsF2Kerc64sTiX2IV0DVk2Lbuzc/9yH8Ky9193jiT5l364KlVk937tgrF:5Ly2Kerc64CiGImRRLyzc/9yH8Ka193d
TLSH
T1D4934A8F73251205D9770979A2052F19AC3DADE78357A04CA7C4B1693833D3ACB3F6A9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads