wannacry | 4cf3edfc40c751ad00bac5fa0b6edf900d3860adfa7273b7012597e4a8072e71

General

Target

2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Size

5.0MB
MD5

420d951178530755da22fa4ecdb4231e
SHA1

ecd41430ea40ef03ab446691b2db41495a06647f
SHA256

4cf3edfc40c751ad00bac5fa0b6edf900d3860adfa7273b7012597e4a8072e71
SHA512

373a87464d863e2f8201409fff04dfa01081b0cbf7c5b932ec2f07ecbb0aedfcca7d0fa6feb6226ec9fea84cca737125555411f16e68188c6739fc6771d0d21f
SSDEEP

24576:2bLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626nSk+RdhAdmv:2nAQqMSPbcBVQej/1INRAARdhnv

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3183) 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

Processes:

tasksche.exe

pid process

2712 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

pid	process
2712	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe

Drops file in Windows directory 1 IoCs

Processes:

2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe

description ioc process

File created C:\WINDOWS\tasksche.exe 2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\WpadNetworkName = "Network 3"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\WpadDecision = "0"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-f7-ef-12-bd-5b	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\46-f7-ef-12-bd-5b	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-f7-ef-12-bd-5b\WpadDecision = "0"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f009d000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\WpadDecisionReason = "1"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\WpadDecisionTime = 70fc88b772a4da01	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-f7-ef-12-bd-5b\WpadDecisionReason = "1"	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-f7-ef-12-bd-5b\WpadDecisionTime = 70fc88b772a4da01	2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe"
1⤵
- Drops file in Windows directory
PID:1560

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
PID:2712

C:\Users\Admin\AppData\Local\Temp\2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-05-12_420d951178530755da22fa4ecdb4231e_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2976

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
592775bfb1e9496c5540d876b7434486

SHA1
92c0aac00e797f8d22dd9f22aed9339970e5abeb

SHA256
2bc6b6c29169ada188caecfc4beb99bdf86f27201de4639574861886e309324f

SHA512
e90ab7cc8d9be7c9f2096204791211c8fa0c9ba7178d4dedbba43723095282c58b79f235dec445cff61e9d64bce67e6fb18338caf2da4b114cfe96c80e5dbe1a

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