juko | 67df9087a81df101ba3ca9cc5a187d6cf25caed397a98fbc15c58f4549ad4229

General

Target
2026-10-17_60d6fa648a6c33062055a685e96401b1_elex_wannacry.exe
Size 32KB
Sample261019-eed69aes2y
SHA256 67df9087a81df101ba3ca9cc5a187d6cf25caed397a98fbc15c58f4549ad4229
MD5 60d6fa648a6c33062055a685e96401b1
SHA1 ed09809af9f71a6c7b2aacf6e4f10d9b2c68e814
SHA512 7441033bbbf068664f35797aab912249bda2346a5235a436e0621ca4b45e2e497c0afe624fe3e2b2757e223e551e9a20cb8d4e98d1c59578cb87b7fea17fbce2
SSDEEP 768:/ZL/0F24lercjO4sTZg5ZLvn2IuWZ0kqnOdNPWQH/L:xLsF2Kerc64sTiX2IV0DxYL
TLSH
T110E23B2B6AA17052C59320F0F9591F34C43D9DB9016BB462F7417A692CB2E63CF71ACE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution 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/0x001c00000000696b-3.dat	family_juko
behavioral2/files/0x000a000000016bc8-10.dat	family_juko

Executes dropped EXE 2 IoCs

pid	Process
4956	WINWORD.exe
2244	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-1-5-21-1404337215-1550464601-2805570857-1000\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

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
2428	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WINWORD.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WINWORD.exe

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	2026-10-17_60d6fa648a6c33062055a685e96401b1_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
2428	cmd.exe
1684	PING.EXE
1384	PING.EXE
2904	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
1684	PING.EXE
1384	PING.EXE
2904	PING.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 6020 wrote to memory of 4956	6020	2026-10-17_60d6fa648a6c33062055a685e96401b1_elex_wannacry.exe	88
PID 4956 wrote to memory of 2428	4956	WINWORD.exe	89
PID 2428 wrote to memory of 1684	2428	cmd.exe	91
PID 2428 wrote to memory of 1384	2428	cmd.exe	92
PID 2428 wrote to memory of 2904	2428	cmd.exe	93
PID 2428 wrote to memory of 2244	2428	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-10-17_60d6fa648a6c33062055a685e96401b1_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-17_60d6fa648a6c33062055a685e96401b1_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:6020
- 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:4956
- - 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\00006A3C" WINWORD.exe&ping 127.0.0.1 -n 2&"C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2428
  - - 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:1684
  - - 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:1384
  - - 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:2904
  - - 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
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      PID:2244

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

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

2

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

00006A3C

Path C:\Users\Admin\AppData\Roaming\Mozilla\00006A3C
Size 32KB
SHA256 a692edc1c7236e26290a2632ff4c314f84feca883051255dd5ff78852e4efa6d
MD5 c567b85a34f322287177a95c737e95ee
SHA1 fee8498ba876e94a2df067d6316daeb9314d5994
SHA512 09e5966105b8148e2bd9d76886aafaf39822fa64d3a1ab958e991a7c3f814fc810e8a6ada866aaf7b750ca8f9c59fc81b7b8746e381759846fb5bac59584d8cc
SSDEEP 768:/ZL/0F24lercjO4sTZg5ZLvn2IuWZ0kqnOdNPWQH/X:xLsF2Kerc64sTiX2IV0DxYX
TLSH
T1AEE23B2B6AA17052C59320F0F9591F34C43D9DB9016BB462F7417A692CB2E63CF71ACE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

WINWORD.exe

Path C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
Size 32KB
SHA256 67df9087a81df101ba3ca9cc5a187d6cf25caed397a98fbc15c58f4549ad4229
MD5 60d6fa648a6c33062055a685e96401b1
SHA1 ed09809af9f71a6c7b2aacf6e4f10d9b2c68e814
SHA512 7441033bbbf068664f35797aab912249bda2346a5235a436e0621ca4b45e2e497c0afe624fe3e2b2757e223e551e9a20cb8d4e98d1c59578cb87b7fea17fbce2
SSDEEP 768:/ZL/0F24lercjO4sTZg5ZLvn2IuWZ0kqnOdNPWQH/L:xLsF2Kerc64sTiX2IV0DxYL
TLSH
T110E23B2B6AA17052C59320F0F9591F34C43D9DB9016BB462F7417A692CB2E63CF71ACE
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