wannacry | 36a8616058e9cf6eb69e928bc3758f9ad335cb90df7a60acac7933f636632973

General

Target

20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Size

3.6MB
MD5

ef535af4c1addc6ad4ed95ea59cb386f
SHA1

9d92ce0db22a8ee95c35edb01a67da916fe15bcf
SHA256

36a8616058e9cf6eb69e928bc3758f9ad335cb90df7a60acac7933f636632973
SHA512

d7d671f0937c5c67df603702522c03a8f07bc73a1de5f7499d2126f576f2cfe89546ab7fd8454fdff92b44b30ab929ddf5b68a37692aad23ae8ffed7132a25a4
SSDEEP

49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HeAMEc:XDqPoBhz1aRxcSUDe5

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3103) 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
3052	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	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.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	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4CA1A2C4-E34F-44C9-AA53-274E25C11588}	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4CA1A2C4-E34F-44C9-AA53-274E25C11588}\26-a6-f7-50-57-44	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4CA1A2C4-E34F-44C9-AA53-274E25C11588}\WpadNetworkName = "Network 3"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-a6-f7-50-57-44	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4CA1A2C4-E34F-44C9-AA53-274E25C11588}\WpadDecision = "0"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-a6-f7-50-57-44\WpadDecision = "0"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-a6-f7-50-57-44\WpadDecisionTime = c0820ccd3210db01	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4CA1A2C4-E34F-44C9-AA53-274E25C11588}\WpadDecisionReason = "1"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4CA1A2C4-E34F-44C9-AA53-274E25C11588}\WpadDecisionTime = c0820ccd3210db01	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-a6-f7-50-57-44\WpadDecisionReason = "1"	20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe

C:\Users\Admin\AppData\Local\Temp\20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:276
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:3052

C:\Users\Admin\AppData\Local\Temp\20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240926ef535af4c1addc6ad4ed95ea59cb386fwannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2480

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
4425c1cfb5351a4836a6f51d3b0cadda

SHA1
9d8762dacfe1f9cb1299ad8599ac3287ed2f4bcb

SHA256
b1de1fad922edd474fe2347a58cc6c77da2baa8d9a99f6305df22b05cda65946

SHA512
c9162cdb8e51884634d63335d7d92fad7d87418cb7bb86a80c622f16888e72eaded924f89b852dbef84323565aa9af1c5e62d89b61b2125d6dc961d6bd041af1

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