wannacry | d9f7a9a558f3b997afc527bb78d4520bcdf6cf67875830e818701953c1bf8853

General

Target

aed2448b720eaef9a18214be5e38f5b7.dll
Size

5.0MB
MD5

aed2448b720eaef9a18214be5e38f5b7
SHA1

431d66642b25c362986a7481ea1f07fed116d8ad
SHA256

d9f7a9a558f3b997afc527bb78d4520bcdf6cf67875830e818701953c1bf8853
SHA512

f73098c68a694d566aded136e575bdb16abdeb3dd2435ab25039b7b8200de7d4c323dc1afbd74534df9f3e08fc2cdaf71b377f95026205ef20b45b2a1e7a9009

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1282) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1996 mssecsvc.exe
1532 mssecsvc.exe
268 tasksche.exe

pid	process
1996	mssecsvc.exe
1532	mssecsvc.exe
268	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

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

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92D50F7D-37A0-4720-B7FC-D255E7799BB4}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92D50F7D-37A0-4720-B7FC-D255E7799BB4}\WpadDecisionTime = 908175bbf69bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\de-30-50-48-1f-cd\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\de-30-50-48-1f-cd\WpadDecisionTime = 908175bbf69bd801	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00cc000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92D50F7D-37A0-4720-B7FC-D255E7799BB4}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\de-30-50-48-1f-cd	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92D50F7D-37A0-4720-B7FC-D255E7799BB4}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92D50F7D-37A0-4720-B7FC-D255E7799BB4}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92D50F7D-37A0-4720-B7FC-D255E7799BB4}\de-30-50-48-1f-cd	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\de-30-50-48-1f-cd\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 956 wrote to memory of 1020	956	rundll32.exe	rundll32.exe
PID 956 wrote to memory of 1020	956	rundll32.exe	rundll32.exe
PID 956 wrote to memory of 1020	956	rundll32.exe	rundll32.exe
PID 956 wrote to memory of 1020	956	rundll32.exe	rundll32.exe
PID 956 wrote to memory of 1020	956	rundll32.exe	rundll32.exe
PID 956 wrote to memory of 1020	956	rundll32.exe	rundll32.exe
PID 956 wrote to memory of 1020	956	rundll32.exe	rundll32.exe
PID 1020 wrote to memory of 1996	1020	rundll32.exe	mssecsvc.exe
PID 1020 wrote to memory of 1996	1020	rundll32.exe	mssecsvc.exe
PID 1020 wrote to memory of 1996	1020	rundll32.exe	mssecsvc.exe
PID 1020 wrote to memory of 1996	1020	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aed2448b720eaef9a18214be5e38f5b7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:956

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aed2448b720eaef9a18214be5e38f5b7.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1020

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1996

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:268

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1532

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
832b7876d39b811503cb011100922bec

SHA1
bf31acb85c77a10812e79fca3c56897063750797

SHA256
2eba6f079e253d054fa3e93353bd563e43a1f0bec6dc8275b7edead8a086d753

SHA512
6e9b9836116e98ce5c5df7220358bc91e9be833ff436d1a55839c824359f619bce16e9853c47114e131bda52896cc6a4bf49cd77443d8c669c999c08bbb8c225

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
832b7876d39b811503cb011100922bec

SHA1
bf31acb85c77a10812e79fca3c56897063750797

SHA256
2eba6f079e253d054fa3e93353bd563e43a1f0bec6dc8275b7edead8a086d753

SHA512
6e9b9836116e98ce5c5df7220358bc91e9be833ff436d1a55839c824359f619bce16e9853c47114e131bda52896cc6a4bf49cd77443d8c669c999c08bbb8c225

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
832b7876d39b811503cb011100922bec

SHA1
bf31acb85c77a10812e79fca3c56897063750797

SHA256
2eba6f079e253d054fa3e93353bd563e43a1f0bec6dc8275b7edead8a086d753

SHA512
6e9b9836116e98ce5c5df7220358bc91e9be833ff436d1a55839c824359f619bce16e9853c47114e131bda52896cc6a4bf49cd77443d8c669c999c08bbb8c225

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c04b4b25d60a28425119ec9ee7d3193c

SHA1
b1e996512ec6799a10b2b5fc4fd67e9e40820941

SHA256
a550bd2542fe4f4d26c8434dc0a28c89512e490cf4f4a04c330ee2a3c5fae13f

SHA512
cfe93b91334eb1c67fb62b144894ec1840c4e094e983bae5b4036ba5c6f2e217ec3e8ef140ba45e26eec1f1510acc53f1c9665226d4b38acf76d56f392c668e0

Download Submit
memory/1020-54-0x0000000000000000-mapping.dmp

Download
memory/1020-55-0x0000000075BF1000-0x0000000075BF3000-memory.dmp

Filesize
8KB

Download
memory/1996-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads