wannacry | ee0e94f9bf17c7c0491cd22dec56da8030b7e2ecfdfc334b29f8a0983d16b4a6

General

Target

b2bcb5d052bd5c01f273d23ca1bd03f8_JaffaCakes118.dll
Size

5.0MB
MD5

b2bcb5d052bd5c01f273d23ca1bd03f8
SHA1

9fbc6b7a778bfe6175bfabf5bcbabb1b93c39db3
SHA256

ee0e94f9bf17c7c0491cd22dec56da8030b7e2ecfdfc334b29f8a0983d16b4a6
SHA512

bafa8dc0e290e12831b83ff2694ccc5c53650e1a50fd89c3c64ee5f55d5c1401063b1f3cb6516db0890b7501fa563706f07f93175a36c8179c29a5406c449050
SSDEEP

98304:TDqPoBhz1aRxcSUDkzAdhvxWa9v593R8yAVp2H:TDqPe1CxcxksUaVzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3191) 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

380 mssecsvc.exe
2360 mssecsvc.exe
2732 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
380	mssecsvc.exe
2360	mssecsvc.exe
2732	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 (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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D2724626-9EBC-4E34-BB4F-08979FD48BC3}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D2724626-9EBC-4E34-BB4F-08979FD48BC3}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D2724626-9EBC-4E34-BB4F-08979FD48BC3}\WpadDecisionTime = 70ce5ed0cdbfda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D2724626-9EBC-4E34-BB4F-08979FD48BC3}\32-80-2d-56-1b-1c	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\32-80-2d-56-1b-1c\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-80-2d-56-1b-1c\WpadDecisionReason = "1"	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-80-2d-56-1b-1c	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "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\ZoneMap\UNCAsIntranet = "0"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0052000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D2724626-9EBC-4E34-BB4F-08979FD48BC3}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-80-2d-56-1b-1c\WpadDecisionTime = 70ce5ed0cdbfda01	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\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D2724626-9EBC-4E34-BB4F-08979FD48BC3}\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 2484 wrote to memory of 2232	2484	rundll32.exe	rundll32.exe
PID 2484 wrote to memory of 2232	2484	rundll32.exe	rundll32.exe
PID 2484 wrote to memory of 2232	2484	rundll32.exe	rundll32.exe
PID 2484 wrote to memory of 2232	2484	rundll32.exe	rundll32.exe
PID 2484 wrote to memory of 2232	2484	rundll32.exe	rundll32.exe
PID 2484 wrote to memory of 2232	2484	rundll32.exe	rundll32.exe
PID 2484 wrote to memory of 2232	2484	rundll32.exe	rundll32.exe
PID 2232 wrote to memory of 380	2232	rundll32.exe	mssecsvc.exe
PID 2232 wrote to memory of 380	2232	rundll32.exe	mssecsvc.exe
PID 2232 wrote to memory of 380	2232	rundll32.exe	mssecsvc.exe
PID 2232 wrote to memory of 380	2232	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2bcb5d052bd5c01f273d23ca1bd03f8_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2484

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2bcb5d052bd5c01f273d23ca1bd03f8_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2232

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:380

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2732

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:2360

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
8177d1aa276d80dd1ad8e8b5de6ae796

SHA1
776f471f28df141ee2d5cf365d4b51be53d06fa8

SHA256
2a80d4519e5d2c9c19214e2e833b223a99451fc3d63851b53a37bb3d71b1af6c

SHA512
4c970eb85d98fc9e64a3a80c43d82be2bbb3225c46f539588369b7c7b46263dc21bb74599dcb9794f6a1595f4956adf5f84577a56d64bbab1e2bc0cb5160e4ed

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c41b977104d3e5ee765b56aac42ba1be

SHA1
6eeabfaeb9cd0fe5965a20469a15106e07f69265

SHA256
4371e5a5f6814f1e40a584cf3302434382d5ba22da1f2a27f629aea9b992894d

SHA512
0f743be8137999ec5fe098660dfb07658bdd60062b439956b6a41adcef3f2876a175f54b0beb214c14e489196705fca6466d18d26f71bee8dc75c1dd03a1e97c

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads