wannacry | 0ef9d87cc6541d54f93149af4a12521b994aa9b1775b60e6ce60d0c5e5a930ce

General

Target

20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Size

3.6MB
MD5

abc2ac1b583032c5f2ddb636c34342c4
SHA1

be9b9636376dd4a019227285896594d27c4fe353
SHA256

0ef9d87cc6541d54f93149af4a12521b994aa9b1775b60e6ce60d0c5e5a930ce
SHA512

cbfff0bb0f588b4debac0aab80adbfa232a9c73789a271088fea3725b123ad3f6d6fbfc90b73710e91cac40b999d6baac36fa35ccec99313376ccd938d6f7d7c
SSDEEP

49152:XnAQqMSPbcBVq/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAMEdI:XDqPoBc1aRxcSUDk36SAEdhvxWa9P5SI

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm 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
2580	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	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.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	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f01a4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7D9CDE4D-E426-4AA1-9E7B-86E16919E46A}\WpadDecisionReason = "1"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7D9CDE4D-E426-4AA1-9E7B-86E16919E46A}\WpadDecision = "0"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-f5-e5-ed-de-fd	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7D9CDE4D-E426-4AA1-9E7B-86E16919E46A}	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7D9CDE4D-E426-4AA1-9E7B-86E16919E46A}\WpadDecisionTime = b05ea5f87000db01	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-f5-e5-ed-de-fd\WpadDecisionTime = b05ea5f87000db01	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7D9CDE4D-E426-4AA1-9E7B-86E16919E46A}\WpadNetworkName = "Network 3"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7D9CDE4D-E426-4AA1-9E7B-86E16919E46A}\da-f5-e5-ed-de-fd	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-f5-e5-ed-de-fd\WpadDecisionReason = "1"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-f5-e5-ed-de-fd\WpadDecision = "0"	20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe

C:\Users\Admin\AppData\Local\Temp\20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:1760
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2580

C:\Users\Admin\AppData\Local\Temp\20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240906abc2ac1b583032c5f2ddb636c34342c4wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2624

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
5ffa0bf099b42864698794afac439aaa

SHA1
9b6a827cefd04ea268ef14160a67d4e3a1a67903

SHA256
170c2e437ac932e396146ba0c7cd0b3d6b09cc4938f27455aca3b58505248f76

SHA512
a8a7b8061bd87372ca783763827da0c878eb014875f86b5e6c9f42c8672d60e3c13d5851218bbf3db95c726c4eaa961b62e96941a8ff658f67bdadfaf6a33b4f

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