wannacry | 87ba3542b2055ab6223f8d9178b1d624406782f607f7a35a02a16272485ba01a

General

Target

7148c1cc72f9108fd46ca44743ec20cd_JaffaCakes118.dll
Size

5.0MB
MD5

7148c1cc72f9108fd46ca44743ec20cd
SHA1

db062fd223246c5398b9d16908c77d88d568cec1
SHA256

87ba3542b2055ab6223f8d9178b1d624406782f607f7a35a02a16272485ba01a
SHA512

ad5443c3ea298fe47a299ce7bf23927005e427d0a1b6c480fa8377ad9a04ce9f687bc85bec9f51ad091abc88bfc761450a2de24148649dffd880e1a07c832991
SSDEEP

24576:zbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTP:znAQqMSPbcBVQej/1INRx+TSqT

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3294) 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

620 mssecsvc.exe
3020 mssecsvc.exe
2624 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
620	mssecsvc.exe
3020	mssecsvc.exe
2624	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 (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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18F780D2-A0DF-459F-89CA-8CFBFF4F2E4B}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\de-b6-f7-94-93-9f\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\de-b6-f7-94-93-9f\WpadDecisionTime = f0a02fcf76aeda01	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\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\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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18F780D2-A0DF-459F-89CA-8CFBFF4F2E4B}\de-b6-f7-94-93-9f	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\{18F780D2-A0DF-459F-89CA-8CFBFF4F2E4B}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18F780D2-A0DF-459F-89CA-8CFBFF4F2E4B}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\de-b6-f7-94-93-9f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\de-b6-f7-94-93-9f\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	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f003b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18F780D2-A0DF-459F-89CA-8CFBFF4F2E4B}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{18F780D2-A0DF-459F-89CA-8CFBFF4F2E4B}\WpadDecisionTime = f0a02fcf76aeda01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2056 wrote to memory of 2076	2056	rundll32.exe	rundll32.exe
PID 2056 wrote to memory of 2076	2056	rundll32.exe	rundll32.exe
PID 2056 wrote to memory of 2076	2056	rundll32.exe	rundll32.exe
PID 2056 wrote to memory of 2076	2056	rundll32.exe	rundll32.exe
PID 2056 wrote to memory of 2076	2056	rundll32.exe	rundll32.exe
PID 2056 wrote to memory of 2076	2056	rundll32.exe	rundll32.exe
PID 2056 wrote to memory of 2076	2056	rundll32.exe	rundll32.exe
PID 2076 wrote to memory of 620	2076	rundll32.exe	mssecsvc.exe
PID 2076 wrote to memory of 620	2076	rundll32.exe	mssecsvc.exe
PID 2076 wrote to memory of 620	2076	rundll32.exe	mssecsvc.exe
PID 2076 wrote to memory of 620	2076	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7148c1cc72f9108fd46ca44743ec20cd_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2056

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7148c1cc72f9108fd46ca44743ec20cd_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2076

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:620

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2624

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:3020

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
f3bfc66597d832b63cbf7a20b2830eeb

SHA1
174d2694590d0a495ef9ecabb230a1cd9558263d

SHA256
13a50611e7735fe111c5d357bf2e865c12aecf12fc7bfd5638c020f2631d1e56

SHA512
1d26c5e07ff1bbc1a036f4a83d0407b68ba571427ed73648068889ecbdf7f37cc9255d83efeaf285c93df9a0eed48d21793ab698878172ca507beef10b018988

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

MD5
212e6057756b5b3be7715c8feed70def

SHA1
6cf894d1b1eb8cb3066099c172e12ffd27f97cef

SHA256
3f987b75d37651d2348c234898ad4ddbb44b35f87ae4a2b7ce1c5e96d3293c73

SHA512
77cf807f9a7508595042d2ebc6919789d164aba64928266969d82df605eabf72ecbaefd221def8011568823982831a78fd8665da4d364410066022f166f27f7b

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads