wannacry | ec4159621c258d5a426905eed5a43e4b7ab5a9d3be0e05a16622ebc430c56164

General

Target

920f8846be4136bbd172db82715ed620_JaffaCakes118.dll
Size

5.0MB
MD5

920f8846be4136bbd172db82715ed620
SHA1

ba184c8d68968deeb7304a713fe67b03639a850d
SHA256

ec4159621c258d5a426905eed5a43e4b7ab5a9d3be0e05a16622ebc430c56164
SHA512

09cabcf9e67135de399221b3cf64de357914ac070393737be0f085cbca6ef94ba0ec7160c615e80dd106ae61f74e8b84ffa17fb5007a7db0b672b7266c1361be
SSDEEP

12288:yebLgPlu+QhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+hq0yBt6O4LEg:zbLgddQhfdmMSirYbcMNgef0r

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3302) 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

3040 mssecsvc.exe
2640 mssecsvc.exe
2528 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
3040	mssecsvc.exe
2640	mssecsvc.exe
2528	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\WpadDecisionTime = 70410976bfb5da01	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\AutoDetect = "1"	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\{9E57EC75-B56B-4995-B918-352C2AE90148}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-7a-5e-ac-ac-3b	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\5a-7a-5e-ac-ac-3b	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-7a-5e-ac-ac-3b\WpadDecision = "0"	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\5a-7a-5e-ac-ac-3b\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\Connections	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\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-7a-5e-ac-ac-3b\WpadDecisionTime = 70410976bfb5da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0087000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2092 wrote to memory of 2732	2092	rundll32.exe	rundll32.exe
PID 2092 wrote to memory of 2732	2092	rundll32.exe	rundll32.exe
PID 2092 wrote to memory of 2732	2092	rundll32.exe	rundll32.exe
PID 2092 wrote to memory of 2732	2092	rundll32.exe	rundll32.exe
PID 2092 wrote to memory of 2732	2092	rundll32.exe	rundll32.exe
PID 2092 wrote to memory of 2732	2092	rundll32.exe	rundll32.exe
PID 2092 wrote to memory of 2732	2092	rundll32.exe	rundll32.exe
PID 2732 wrote to memory of 3040	2732	rundll32.exe	mssecsvc.exe
PID 2732 wrote to memory of 3040	2732	rundll32.exe	mssecsvc.exe
PID 2732 wrote to memory of 3040	2732	rundll32.exe	mssecsvc.exe
PID 2732 wrote to memory of 3040	2732	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\920f8846be4136bbd172db82715ed620_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2092

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\920f8846be4136bbd172db82715ed620_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2732

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3040

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2528

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:2640

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
34098727098a3dec3d3d7d404cdd80f3

SHA1
bc8f7137bf67a20726d7f3ad23051c62f1012374

SHA256
c15022855bcbb1dc8b87ebe9746b912e993fde3f12aaf7812b1baa7ba1d6faeb

SHA512
31489b5f9b3a83c1b1c652c248015753b41046523ab4039486d52ce24ebe752a6a805a21450e959845c94d62c2dad648aeb6449e4139b9a46685cd7d4aabfce2

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

MD5
86b8dc0e4fd2c5a82fe3d83052330ad3

SHA1
e6019ec59f381b1785c3e2a582fb6c503bb80570

SHA256
e04db2b525fb78b6adc528f7cdb856e18ca1db803d3a390bae7df0fb57ad03c6

SHA512
a04c021f4a0e7a9ea2afaf3213c4461c69a80714d5ade8b079ff43aba30ffd0d4dd456f3d9c8ec8336102d14487ef117fa3d30774a0955aa528a2e8d2ef5ca7d

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads