wannacry | 2ce28a0df8beb5504ff1769d1b5f57bffd18bcb8cd39669649e445c6a60bf31a

General

Target

b02604ec920bc250d015b843b84efa97_JaffaCakes118.dll
Size

5.0MB
MD5

b02604ec920bc250d015b843b84efa97
SHA1

0accc7366352882fa66443481323b24bff982e26
SHA256

2ce28a0df8beb5504ff1769d1b5f57bffd18bcb8cd39669649e445c6a60bf31a
SHA512

3606714c94cc1ca0524a912af8ffc8cc86f5e5e57d71f88f299ce1c1b6a6d9c59e3b31904431461d9fe4cae4e7c536a3b3a3ac3e261afba65dc93cf4b450444a
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVpi:TDqPe1Cxcxk3ZAEUadzR8ycA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3207) 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

2208 mssecsvc.exe
2784 mssecsvc.exe
2684 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
2208	mssecsvc.exe
2784	mssecsvc.exe
2684	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\ProxyEnable = "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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{127D41F4-8ED5-49D8-87E8-4A16086AD70F}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-98-87-75-04-e4\WpadDecisionReason = "1"	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\Wpad\b6-98-87-75-04-e4	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	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 (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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{127D41F4-8ED5-49D8-87E8-4A16086AD70F}\WpadDecisionReason = "1"	mssecsvc.exe
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\Wpad\{127D41F4-8ED5-49D8-87E8-4A16086AD70F}\WpadDecisionTime = b048a1236abfda01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f017c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{127D41F4-8ED5-49D8-87E8-4A16086AD70F}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{127D41F4-8ED5-49D8-87E8-4A16086AD70F}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{127D41F4-8ED5-49D8-87E8-4A16086AD70F}\b6-98-87-75-04-e4	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-98-87-75-04-e4\WpadDecisionTime = b048a1236abfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-98-87-75-04-e4\WpadDecision = "0"	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 2108 wrote to memory of 2396	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2396	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2396	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2396	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2396	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2396	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2396	2108	rundll32.exe	rundll32.exe
PID 2396 wrote to memory of 2208	2396	rundll32.exe	mssecsvc.exe
PID 2396 wrote to memory of 2208	2396	rundll32.exe	mssecsvc.exe
PID 2396 wrote to memory of 2208	2396	rundll32.exe	mssecsvc.exe
PID 2396 wrote to memory of 2208	2396	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b02604ec920bc250d015b843b84efa97_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2108

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b02604ec920bc250d015b843b84efa97_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2396

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2208

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2684

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:2784

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
4a83f302968101a9c12410ef1c647a59

SHA1
8b6f7a682b2f92214a3553ee8899e8c4e0f8c869

SHA256
54d13721eabf71260fe1ef7da52d7c6c31f1598cea0b5baaca30778ba1a81469

SHA512
632960c704797501f9e3878c2c25f1b026f8d24d7726c658614ec29e16e51a7c5e01c9cbf45fb651efe16ded7a94ba82eecbbce5645552ffb1f13d8ee4dac0fd

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
4b275268b9ed8e597853780e369416de

SHA1
a21a488bc6781ceb82701f25445a4b8cf718053c

SHA256
99bad35d9f3552a51b0fefbfb90f75f13fc62bdfcfb1de1283650228ed482640

SHA512
ff1f7af56ccd85086f85805b4072b23fe2ad0cd6170c4af45da8f98d26dda151d5a6b4d0c944d47a65290404b532ca035bd7879b65f43db57faa1ebc860034f4

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads