wannacry | b05aa7875251b7dd9e6a67f22bd2e0f9ae6a47f5b1017a98d657fe3b02187e9f

General

Target

3aa00668bdb6867cfe145f440dddcdec_JaffaCakes118.dll
Size

5.0MB
MD5

3aa00668bdb6867cfe145f440dddcdec
SHA1

d45814cd9e8f60e29183d2477d0c478aa0f0a548
SHA256

b05aa7875251b7dd9e6a67f22bd2e0f9ae6a47f5b1017a98d657fe3b02187e9f
SHA512

aebf302a5e12d4863ae83c594f0c912c046c87aca9e1c88a346c76e7fe0045c196672f6c667aa639bef68aa85536bd837ee6949b34dfc9bd07de029f70f99c29
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAk3R8yAH1plAH:+DqPoBhz1aRxcSUDk36SA73R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3215) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

3040 mssecsvc.exe
1644 mssecsvc.exe
2300 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
3040	mssecsvc.exe
1644	mssecsvc.exe
2300	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B449418-8E9A-4EC0-9EB4-692E90704461}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B449418-8E9A-4EC0-9EB4-692E90704461}\WpadDecisionTime = d0c1d9167aa4da01	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\Wpad\96-50-f9-f5-4c-41\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	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\{2B449418-8E9A-4EC0-9EB4-692E90704461}\96-50-f9-f5-4c-41	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-50-f9-f5-4c-41\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-50-f9-f5-4c-41\WpadDecisionTime = d0c1d9167aa4da01	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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B449418-8E9A-4EC0-9EB4-692E90704461}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B449418-8E9A-4EC0-9EB4-692E90704461}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-50-f9-f5-4c-41	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\Wpad\{2B449418-8E9A-4EC0-9EB4-692E90704461}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2928 wrote to memory of 2996	2928	rundll32.exe	rundll32.exe
PID 2928 wrote to memory of 2996	2928	rundll32.exe	rundll32.exe
PID 2928 wrote to memory of 2996	2928	rundll32.exe	rundll32.exe
PID 2928 wrote to memory of 2996	2928	rundll32.exe	rundll32.exe
PID 2928 wrote to memory of 2996	2928	rundll32.exe	rundll32.exe
PID 2928 wrote to memory of 2996	2928	rundll32.exe	rundll32.exe
PID 2928 wrote to memory of 2996	2928	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 3040	2996	rundll32.exe	mssecsvc.exe
PID 2996 wrote to memory of 3040	2996	rundll32.exe	mssecsvc.exe
PID 2996 wrote to memory of 3040	2996	rundll32.exe	mssecsvc.exe
PID 2996 wrote to memory of 3040	2996	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3aa00668bdb6867cfe145f440dddcdec_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2928

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3aa00668bdb6867cfe145f440dddcdec_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2996

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3040

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2300

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:1644

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

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
f5fdad1cce51d837d8da1bfe592c8155

SHA1
5c4e3ee8537354a8a5e9d00ecc102b06feacef39

SHA256
c70b439b2d8d42854cc36b6697910f3d6e97e760092d7d71b808a837f9f5b636

SHA512
63484a11dec11bdc7f79ab600a84bd69b9e472f1e65cd7d4e08b37ef72da78f60a5cba8352f6d1c7055478ab623a3a082b5d10d03a93a3830272260c863d8b16

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
2c36f78fe38ba35d7f013dd88da5896c

SHA1
d0ef8751cb49bb0ff9fea9953e489835aa79f272

SHA256
94c6862322ee06e6cc6c58466536f9e641a5fd4b53efde59ba7d26fb4cc1785d

SHA512
81651750599423a5778328e3f2451d5b672ee96b6afbd95487d6c266ab8fbe81b6ed679f2ffdccb20c304cec63a12bab7e37a41616e1ea2da8051a078f57780b

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads