wannacry | b1e8de4c708954e541dadbe0e2979f5d8c5e5cd90545cac6b5c275db4748877b

General

Target

2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Size

5.0MB
MD5

543a7b903be4fdba7ac0e343104339a7
SHA1

191d79fa21f608dfc9056ff4828fa3d3f8222079
SHA256

b1e8de4c708954e541dadbe0e2979f5d8c5e5cd90545cac6b5c275db4748877b
SHA512

af810ea5eae8e7cd0bda87cfd23ff3fe1128f0fae07d096c01b23c4cdf292f12ed6efbc9ce9f5132bfeabab1f7a3b87be21d405ab7fec2564832955e7f433831
SSDEEP

24576:8bLgdlQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6:8nQQqMSPbcBVQej/1INR

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 (3012) 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
2804	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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe

Modifies data under HKEY_USERS 21 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-67-a3-82-0b-47\WpadDecisionTime = d06ff4695651db01	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1133A3C8-5D85-4648-8F6B-CB9EE9C2CB33}\WpadNetworkName = "Network 3"	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00db000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1133A3C8-5D85-4648-8F6B-CB9EE9C2CB33}\WpadDecisionTime = d06ff4695651db01	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1133A3C8-5D85-4648-8F6B-CB9EE9C2CB33}\WpadDecision = "0"	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-67-a3-82-0b-47	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-67-a3-82-0b-47\WpadDecision = "0"	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1133A3C8-5D85-4648-8F6B-CB9EE9C2CB33}\WpadDecisionReason = "1"	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1133A3C8-5D85-4648-8F6B-CB9EE9C2CB33}\ca-67-a3-82-0b-47	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-67-a3-82-0b-47\WpadDecisionReason = "1"	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1133A3C8-5D85-4648-8F6B-CB9EE9C2CB33}	2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2028
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2804

C:\Users\Admin\AppData\Local\Temp\2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-12-18_543a7b903be4fdba7ac0e343104339a7_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2548

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
3.4MB

MD5
a1240e0e48c5ec3be26f75f1a780f63d

SHA1
9f69cf8eeddd666f227c0eaa6861c2f2e159b6e8

SHA256
e51ed0e96a378d10d6aa45755f4598a194608697f3ff46ca7efcc457eb0aa30f

SHA512
6073c8f910027ac7da9b61bdb28a1ddce965dba9ed5fa783f055d712e49dd8e3966d1fe866915e7d32064ae2a216fcd948532bf6fd1baa06c8308ebcbbdd2c40

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