wannacry | e41b2df5bd99af25544a405025d35e2debebfef8e0d51665d442a05b741f30fe

General

Target

749de420abee04a2beea5e16348c45ed_JaffaCakes118.dll
Size

5.0MB
MD5

749de420abee04a2beea5e16348c45ed
SHA1

1fe91061b416f53ff6797b469dcf2c52a2ad7a90
SHA256

e41b2df5bd99af25544a405025d35e2debebfef8e0d51665d442a05b741f30fe
SHA512

3a5b8b426b0f5c54a1f1149c433287f5ab3b07159b2f3fcbbcf479d52e1045fea687bba64f06c69b638b3cd69006d9a96f4e0d8001a68385cc134bb50a8afb5f
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2:TDqPe1Cxcxk3ZAEUadzR8yc4

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3275) 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

2708 mssecsvc.exe
2592 mssecsvc.exe
2692 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
2708	mssecsvc.exe
2592	mssecsvc.exe
2692	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	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18EF7846-4696-419F-A2FA-D996D7DAE5D2}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18EF7846-4696-419F-A2FA-D996D7DAE5D2}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00fd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18EF7846-4696-419F-A2FA-D996D7DAE5D2}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18EF7846-4696-419F-A2FA-D996D7DAE5D2}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18EF7846-4696-419F-A2FA-D996D7DAE5D2}\e6-fb-04-fa-e0-00	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18EF7846-4696-419F-A2FA-D996D7DAE5D2}\WpadDecisionTime = 10e53d2837afda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\e6-fb-04-fa-e0-00\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\e6-fb-04-fa-e0-00\WpadDecisionTime = 10e53d2837afda01	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\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 (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\Wpad\e6-fb-04-fa-e0-00	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\e6-fb-04-fa-e0-00\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2476 wrote to memory of 1952	2476	rundll32.exe	rundll32.exe
PID 2476 wrote to memory of 1952	2476	rundll32.exe	rundll32.exe
PID 2476 wrote to memory of 1952	2476	rundll32.exe	rundll32.exe
PID 2476 wrote to memory of 1952	2476	rundll32.exe	rundll32.exe
PID 2476 wrote to memory of 1952	2476	rundll32.exe	rundll32.exe
PID 2476 wrote to memory of 1952	2476	rundll32.exe	rundll32.exe
PID 2476 wrote to memory of 1952	2476	rundll32.exe	rundll32.exe
PID 1952 wrote to memory of 2708	1952	rundll32.exe	mssecsvc.exe
PID 1952 wrote to memory of 2708	1952	rundll32.exe	mssecsvc.exe
PID 1952 wrote to memory of 2708	1952	rundll32.exe	mssecsvc.exe
PID 1952 wrote to memory of 2708	1952	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\749de420abee04a2beea5e16348c45ed_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2476

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\749de420abee04a2beea5e16348c45ed_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1952

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2708

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2692

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:2592

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

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
00c604f818ab5b6ac2c1034cf2678f05

SHA1
f4b5e3d3663ed310556efd670e3efa976df1ae58

SHA256
03af1f85d5bb0680a882380ed23e52b4e1969e7e8004b58bfaacb7ec2abf3f1c

SHA512
c5309777db12391275257785ab043d740ad39f38bc9c203a50fa8ffe2f22a4619a0dcd5b15dc464ae0ff0f84140c692b3b02d5484d8f71a519a50703e825f1e1

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

MD5
459db8c10b02382e4aed54c572d257e9

SHA1
7829b494cbb1669b81b220bde4207d92b70786ee

SHA256
a2d25b3af03d62d7f4cd85a601cfc2d6c2490aa32f8367fa3d2fe55a6670589e

SHA512
ca14469520ace51f092d894fb1cb88c5a93787741e9cddb6821e80d75d454ab213e126eabebe3769e4f80d9d3d9f87d1961a3a4ea50f9ca8f028a0b28c19072a

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads