wannacry | 6d76e23ac6c2203743a4428bad5d399144bf7703106bced840e5c3f5bf0e7441

General

Target

2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Size

3.6MB
MD5

a024e93dd904ac04fef83ed2d90d3919
SHA1

1672b1a2fbea0cc882d5723903015f53d605fbdc
SHA256

6d76e23ac6c2203743a4428bad5d399144bf7703106bced840e5c3f5bf0e7441
SHA512

d5bc1e57fbf084a8acd218deb8f535c6fde004a3aafc41f18ebc5b34ac44307bde4e0f3979d42a9b551ce8a72860d7771043ba7f110e4e7ca7d98834e4eb67b1
SSDEEP

49152:XnAQ7EKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:XD7yfBhz1aRxcSUDk36SAEdhv

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3258) 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

2496 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
2496	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe

Drops file in Windows directory 1 IoCs

Processes:

2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe

description ioc process

File created C:\WINDOWS\tasksche.exe 2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecisionReason = "1"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecisionTime = 10a75a491897da01	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecision = "0"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecision = "0"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\8e-44-fa-05-dd-51	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecisionTime = 10a75a491897da01	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0076000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadNetworkName = "Network 3"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecisionReason = "1"	2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe"
1⤵
- Drops file in Windows directory
PID:2904

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
PID:2496

C:\Users\Admin\AppData\Local\Temp\2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-04-25_a024e93dd904ac04fef83ed2d90d3919_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2492

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
6c0e2c936ecf845d69eaa9bb35f0a3be

SHA1
40cb58f3be3868d2054c371ebf2de6239cb23b06

SHA256
9f9ad155eeb21b391ddef27def1ab12a05552813811ea43ab621d3e3b9f1bac0

SHA512
24a1ef63293177b5f4350c2a1b0ffeb964bd35c8a719c72e0239ad50f5a69aced6d00be5d8c3b1194b900d55a0986b905aa00b2beaa7cae6c99d27dff9b14cdf

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