wannacry | cba172a00f392dcc0774dba22d714884e2cd898e83066f46e8c89f4bf96a4a00

General

Target

27ace7fc9afc3b8dbaa5dae64f372ba8_JaffaCakes118.dll
Size

5.0MB
MD5

27ace7fc9afc3b8dbaa5dae64f372ba8
SHA1

9ec99cd92eb2fe5513d9b8eb4f76fb22586f68dd
SHA256

cba172a00f392dcc0774dba22d714884e2cd898e83066f46e8c89f4bf96a4a00
SHA512

0bc8081c15fd2f034aa94addc0392a442b997e6eae41cad5c874f87be71027f0049df53dc286329b7a5b533896a5a1ab614abbf2d83f69503c4335a66fe9c1d9
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P5xdWNp2H:+DqPe1Cxcxk3ZAEUadPdQ4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3116) 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

2036 mssecsvc.exe
2612 mssecsvc.exe
2596 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
2036	mssecsvc.exe
2612	mssecsvc.exe
2596	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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\WpadDecision = "0"	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	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	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 (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\5e-6d-4b-d7-b9-1b\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-6d-4b-d7-b9-1b\WpadDecision = "0"	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\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\WpadDecisionTime = e0345b4cb1a1da01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-6d-4b-d7-b9-1b	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0043000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\5e-6d-4b-d7-b9-1b	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-6d-4b-d7-b9-1b\WpadDecisionTime = e0345b4cb1a1da01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2240 wrote to memory of 2044	2240	rundll32.exe	rundll32.exe
PID 2240 wrote to memory of 2044	2240	rundll32.exe	rundll32.exe
PID 2240 wrote to memory of 2044	2240	rundll32.exe	rundll32.exe
PID 2240 wrote to memory of 2044	2240	rundll32.exe	rundll32.exe
PID 2240 wrote to memory of 2044	2240	rundll32.exe	rundll32.exe
PID 2240 wrote to memory of 2044	2240	rundll32.exe	rundll32.exe
PID 2240 wrote to memory of 2044	2240	rundll32.exe	rundll32.exe
PID 2044 wrote to memory of 2036	2044	rundll32.exe	mssecsvc.exe
PID 2044 wrote to memory of 2036	2044	rundll32.exe	mssecsvc.exe
PID 2044 wrote to memory of 2036	2044	rundll32.exe	mssecsvc.exe
PID 2044 wrote to memory of 2036	2044	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\27ace7fc9afc3b8dbaa5dae64f372ba8_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2240

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\27ace7fc9afc3b8dbaa5dae64f372ba8_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2044

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2036

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2596

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:2612

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
0d93f1767928a396702d48d07f0f5dfc

SHA1
75447c3b6898034879892527dd6ec78c69a2360b

SHA256
cb8b368c8bd75ef51b5a72c74042de8f23d15658256e503042d214630f5bc02e

SHA512
872a33b16ea79788a4cfaddde16024160d653e71284097e473b76042fbee721bd6ac1077b19d72d682696d3f62102a42e573c0b21639b4b61a0b8d457590918d

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
c06c9fa6f83b8aee9f29e9e7e44f66f3

SHA1
d1a506d93ad085609cd330db72028ccaac7fd045

SHA256
e5df4290422fe76ce7d01e5d54fd7a19f47fa0d2c415018187ebc33f7503ac81

SHA512
cdc0c3f6aec5ce088d3cde333bc4cc4b3cf088a7ff12566f490d05409ef72ea532405fb2ace5cc370143335436e1b37584f265c8dc69c3af68ef070f8a523b1f

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads