wannacry | 1274d5d4bf8854db5a7b501e3485c643e2d3a1878ab43e9aa87b24449255cd9f

General

Target

2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Size

3.6MB
MD5

83ee3cd01dfdd749d316fd004aa55122
SHA1

38c5f3fe0e22917ae661064521a015c6e30b9988
SHA256

1274d5d4bf8854db5a7b501e3485c643e2d3a1878ab43e9aa87b24449255cd9f
SHA512

f7caf06285c5537442a12025e1d3928146ddc941a8ad0ed5a912e0ddfd4d1e02c44837a424a8d866b268ee34dab6aecfb27f17097afc8c727c89e98356a14568
SSDEEP

12288:GebLgPlu+QhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+DHeQYSUjEXFO:XbLgddQhfdmMSirYbcMNgef0QeQjG

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3290) 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
3004	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	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_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	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{74F04B6F-3BBC-4608-983A-AA8B8CA2CC9E}\WpadDecisionReason = "1"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{74F04B6F-3BBC-4608-983A-AA8B8CA2CC9E}\WpadNetworkName = "Network 3"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-a1-ea-f9-89-5c\WpadDecisionReason = "1"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-a1-ea-f9-89-5c\WpadDecision = "0"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{74F04B6F-3BBC-4608-983A-AA8B8CA2CC9E}\WpadDecision = "0"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-a1-ea-f9-89-5c	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{74F04B6F-3BBC-4608-983A-AA8B8CA2CC9E}\ea-a1-ea-f9-89-5c	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{74F04B6F-3BBC-4608-983A-AA8B8CA2CC9E}	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{74F04B6F-3BBC-4608-983A-AA8B8CA2CC9E}\WpadDecisionTime = a0b14b0f0111db01	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-a1-ea-f9-89-5c\WpadDecisionTime = a0b14b0f0111db01	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2040
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:3004

C:\Users\Admin\AppData\Local\Temp\2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_83ee3cd01dfdd749d316fd004aa55122_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2768

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
01a5dcd03c4c4d2ea0bfcddc144ad6cc

SHA1
f4a6d80529aa04d290e7a3c8ece2cdac0c557d14

SHA256
c29bfd9edea91eb949d600e39edb1331bf167b8a6db77cf70a415f8340ffe6ba

SHA512
0e5702dd9afd0e430662dde017c7a05a1237ac6decd9ce69260ababb8dd1383056560b77745ef1a76382ef840f0fd53f4082f4f713b3ba06e25bf28ad0c2fd0e

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