wannacry | ffa8b67092e720d2dc0b83a88a5c83490b4ee19f962e960647bfc1534bb192ac

General

Target

13553875c752a890b91beb67609fd8d0_JaffaCakes118.dll
Size

5.0MB
MD5

13553875c752a890b91beb67609fd8d0
SHA1

be9f95c524409691a6e793c40144515460e50101
SHA256

ffa8b67092e720d2dc0b83a88a5c83490b4ee19f962e960647bfc1534bb192ac
SHA512

f28d6c75ad09099c66e46777cf224ac9744125f83d3b946821c3a74417d457d0f7886c1cd72b1ba0420f18ddc19b09d9847df973011fb09fe499ca0c36bd6f90
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593RU:+DqPe1Cxcxk3ZAEUadzRU

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3210) 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

2428 mssecsvc.exe
2500 mssecsvc.exe
2708 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
2428	mssecsvc.exe
2500	mssecsvc.exe
2708	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1e-df-f8-96-1a-a3\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1e-df-f8-96-1a-a3\WpadDecision = "0"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{19673D18-DAFA-4605-B56D-BC1802E9DA95}\WpadDecisionTime = e0c026a4379eda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1e-df-f8-96-1a-a3	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{19673D18-DAFA-4605-B56D-BC1802E9DA95}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{19673D18-DAFA-4605-B56D-BC1802E9DA95}\1e-df-f8-96-1a-a3	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\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0078000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{19673D18-DAFA-4605-B56D-BC1802E9DA95}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\{19673D18-DAFA-4605-B56D-BC1802E9DA95}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1e-df-f8-96-1a-a3\WpadDecisionTime = e0c026a4379eda01	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
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\{19673D18-DAFA-4605-B56D-BC1802E9DA95}	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2212 wrote to memory of 2228	2212	rundll32.exe	rundll32.exe
PID 2212 wrote to memory of 2228	2212	rundll32.exe	rundll32.exe
PID 2212 wrote to memory of 2228	2212	rundll32.exe	rundll32.exe
PID 2212 wrote to memory of 2228	2212	rundll32.exe	rundll32.exe
PID 2212 wrote to memory of 2228	2212	rundll32.exe	rundll32.exe
PID 2212 wrote to memory of 2228	2212	rundll32.exe	rundll32.exe
PID 2212 wrote to memory of 2228	2212	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2428	2228	rundll32.exe	mssecsvc.exe
PID 2228 wrote to memory of 2428	2228	rundll32.exe	mssecsvc.exe
PID 2228 wrote to memory of 2428	2228	rundll32.exe	mssecsvc.exe
PID 2228 wrote to memory of 2428	2228	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\13553875c752a890b91beb67609fd8d0_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2212

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\13553875c752a890b91beb67609fd8d0_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2228

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2428

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2708

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:2500

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
2de61ce3c8b9b71e471b31bd67500f0f

SHA1
3cb1cbfa618542d542bdefbb86c0b5392753abd8

SHA256
d26030304646d024e87868bec6cbe177d2fb2e1e583f564f5e626f04b47ba211

SHA512
a58e5652c17c5d20a2f9264f421d6c90f582809439de9e4ac0aafa892299128b3de16397ef06adb67674fdc53f54bad89e5b7011dbc204de32e37edb703018b6

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

MD5
f53f7a524f9e5ddaa7b59218922b99dc

SHA1
34b2fb37aebfc505c0ab54cf0bf8805746f7623a

SHA256
f57f28c00276f0893286ef863e5cde7f233ba05b059a4a32237e7cfb92f441b2

SHA512
26ef0cd3b40270c6539986b9d827243263a3b51a2e3ee1e67515e68da6100380bcd066ddab67e3c3140b6987673811609f43ee96aff9d1eba224627cb80eb7a0

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads