wannacry | b331dde456a219d8b64c158b8b67457e6e03b57074a9d35f3cef7b37e6a6f1dd

General

Target

2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Size

3.6MB
MD5

b1f8fca2f84e1568ea47459ed75d0643
SHA1

2cf74e31ea063fb18efbe40cd3347ee13d4c698b
SHA256

b331dde456a219d8b64c158b8b67457e6e03b57074a9d35f3cef7b37e6a6f1dd
SHA512

0d5bf8648970174e6f7ef23cdf7928d956bd886f76fd38c4825ee6bfe3c7c11c653dde2821f5f6af0c88c60670fd2faef3095bffb40cd032acb844afa7efa6fc
SSDEEP

49152:XnAQqMSPbcBVJkQo6SAARdhnvxJM0H9PAMEcaEau3R8yAH1:XDqPoBbk36SAEdhvxWa9P593R8yAV

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
2820	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_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_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_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB589A97-CE96-45EE-B2C9-ADEDD92E2A81}\WpadDecisionReason = "1"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-fb-0b-05-d6-53\WpadDecisionReason = "1"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB589A97-CE96-45EE-B2C9-ADEDD92E2A81}	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB589A97-CE96-45EE-B2C9-ADEDD92E2A81}\WpadDecisionTime = 0075447e0211db01	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-fb-0b-05-d6-53\WpadDecision = "0"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-fb-0b-05-d6-53\WpadDecisionTime = 0075447e0211db01	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB589A97-CE96-45EE-B2C9-ADEDD92E2A81}\WpadDecision = "0"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB589A97-CE96-45EE-B2C9-ADEDD92E2A81}\WpadNetworkName = "Network 3"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-fb-0b-05-d6-53	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB589A97-CE96-45EE-B2C9-ADEDD92E2A81}\ca-fb-0b-05-d6-53	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2280
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2820

C:\Users\Admin\AppData\Local\Temp\2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_b1f8fca2f84e1568ea47459ed75d0643_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2664

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
872c84ab22a624403b75a95f538b6f2b

SHA1
856420d3feebd7be61690ee89ef48e07977895c6

SHA256
199821f1f7a9d34ecb9f49d972b0bd8dbf684fc65629920b9bf47ec2b74ae303

SHA512
b84e765c3db974190cd40332346c5acd7b771e193c5d244ea4b410d47e2cab8e747f5aac724d75b264d189424bc1be03a4b4bb738adf23d0502bbe2ff801cb8c

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Analysis

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