wannacry | a1cbc612e0973a771b82d1c338d3f85d1f7f8e6a3444db421c64f1bc366db3a4

General

Target

2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Size

2.2MB
MD5

99cf2e6eb4bf0e68b550abcbc260a16a
SHA1

9ee05640d566d0bde6b810d66ae4dff55d11cdec
SHA256

a1cbc612e0973a771b82d1c338d3f85d1f7f8e6a3444db421c64f1bc366db3a4
SHA512

e4bba9fc6bb4067315e575960aae0cdc67cc331366268ef4d9f5744e68361ab3bdd857124bcda0b44775196aeabf83bc46824cb58d13489b306364e570e0db6d
SSDEEP

24576:QbLguriIfEcQdIBrYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqT:QnpENbcBVQej/1INRx+TSqT

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3264) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 1 IoCs

pid	Process
2856	tasksche.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\D8A9DHL1.txt	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\D8A9DHL1.txt	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\9O7OX40W.txt	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\9O7OX40W.txt	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259434810	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00a8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EC565506-3216-494F-8663-11E8119F15A7}\WpadDecisionTime = b0c7f469e142db01	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EC565506-3216-494F-8663-11E8119F15A7}\9a-ec-be-78-d7-0f	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EC565506-3216-494F-8663-11E8119F15A7}\WpadDecisionReason = "1"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EC565506-3216-494F-8663-11E8119F15A7}\WpadDecision = "0"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9a-ec-be-78-d7-0f	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EC565506-3216-494F-8663-11E8119F15A7}	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EC565506-3216-494F-8663-11E8119F15A7}\WpadNetworkName = "Network 3"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9a-ec-be-78-d7-0f\WpadDecisionReason = "1"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9a-ec-be-78-d7-0f\WpadDecisionTime = b0c7f469e142db01	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9a-ec-be-78-d7-0f\WpadDecision = "0"	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2856	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2856	3040	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe	31
PID 3040 wrote to memory of 2856	3040	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe	31
PID 3040 wrote to memory of 2856	3040	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe	31
PID 3040 wrote to memory of 2856	3040	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe	31
PID 3040 wrote to memory of 2856	3040	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe	31
PID 3040 wrote to memory of 2856	3040	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe	31
PID 3040 wrote to memory of 2856	3040	2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3040
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2856

C:\Users\Admin\AppData\Local\Temp\2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-11-30_99cf2e6eb4bf0e68b550abcbc260a16a_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
ca0bdd6a406903f62507e728244927d1

SHA1
7fdde06de5b6cd21c9acda654da723f6ffdb2fb7

SHA256
7262e02913e7361aaf6952ed1a63a29cd44193243c06488e3e15cad2564ec12e

SHA512
97048ae8a642924043d9e14bebd0896958dd942df61c459c07221b4efd9a3a7aa5cf45b97c3ea54aa64ab93b49093593d4cc41acf823eae2bb5e0fc8e3f5e31e

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