wannacry | 7ab0e9ddbab262e9d049de139e13f3ef8caefc72336dc2ff6575bb49044385f5

General

Target

a25ce7c14a9352b35bd20c99c94b1b19.dll
Size

5.0MB
MD5

a25ce7c14a9352b35bd20c99c94b1b19
SHA1

4eb044f3cf31b85dbb3136cf81535855b083ba74
SHA256

7ab0e9ddbab262e9d049de139e13f3ef8caefc72336dc2ff6575bb49044385f5
SHA512

2d768d7ef6c7b968a7eb66dc43f668b99a4a6d463514ff5d23586e02985a137ef9d0464d7d425e6117e29bffb3323de09ed3c4f8229adfb4c8f479e323507541

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (957) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1812 mssecsvc.exe
1780 mssecsvc.exe
972 tasksche.exe

pid	process
1812	mssecsvc.exe
1780	mssecsvc.exe
972	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\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ca000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\3a-5c-1d-0c-23-5f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\3a-5c-1d-0c-23-5f\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\3a-5c-1d-0c-23-5f\WpadDecision = "0"	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\ZoneMap\	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\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\WpadNetworkName = "Network 3"	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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\3a-5c-1d-0c-23-5f\WpadDecisionTime = 40d7cf4fe99bd801	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\AutoDetect = "1"	mssecsvc.exe
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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\WpadDecisionTime = 40d7cf4fe99bd801	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\3a-5c-1d-0c-23-5f	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1976 wrote to memory of 1952	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 1952	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 1952	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 1952	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 1952	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 1952	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 1952	1976	rundll32.exe	rundll32.exe
PID 1952 wrote to memory of 1812	1952	rundll32.exe	mssecsvc.exe
PID 1952 wrote to memory of 1812	1952	rundll32.exe	mssecsvc.exe
PID 1952 wrote to memory of 1812	1952	rundll32.exe	mssecsvc.exe
PID 1952 wrote to memory of 1812	1952	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a25ce7c14a9352b35bd20c99c94b1b19.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1976

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a25ce7c14a9352b35bd20c99c94b1b19.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1952

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1812

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:972

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:1780

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
3a9e26e1b310fc01320668b00158979c

SHA1
e6a6094a19f27a71b423280e915037a19602c96d

SHA256
e2966a4b3a80258f66315dd2b4495014bc21c1d1f6488cb0a95c9c3a4a7063a7

SHA512
d7f38d4bc53293a37cef6f9264fcc8b1eb22fb0983a08fb47f32a31f0f60891c3c0f6dd0efa4dcaefafcbbd2cf1d7fd4aecfc6039f3a50f2805a96bf3ce780d0

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
3a9e26e1b310fc01320668b00158979c

SHA1
e6a6094a19f27a71b423280e915037a19602c96d

SHA256
e2966a4b3a80258f66315dd2b4495014bc21c1d1f6488cb0a95c9c3a4a7063a7

SHA512
d7f38d4bc53293a37cef6f9264fcc8b1eb22fb0983a08fb47f32a31f0f60891c3c0f6dd0efa4dcaefafcbbd2cf1d7fd4aecfc6039f3a50f2805a96bf3ce780d0

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
3a9e26e1b310fc01320668b00158979c

SHA1
e6a6094a19f27a71b423280e915037a19602c96d

SHA256
e2966a4b3a80258f66315dd2b4495014bc21c1d1f6488cb0a95c9c3a4a7063a7

SHA512
d7f38d4bc53293a37cef6f9264fcc8b1eb22fb0983a08fb47f32a31f0f60891c3c0f6dd0efa4dcaefafcbbd2cf1d7fd4aecfc6039f3a50f2805a96bf3ce780d0

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

MD5
827310857e939c87c6f985b6b2a33dca

SHA1
4bad4a46a0b16206939bbfd4318e0e66842b6998

SHA256
15819cc4c93014269413d04ef18df99dfba0a06884490cd6b6e54724d968c8e2

SHA512
51653d8c806856e1ae1dc88312a1ff9b94d16a8e1bc8784bb3ecced5c85a22b7c82d5ab4198c651a3de7c03930ccc3c321ae8f878b11054a288e81ca749e4022

Download Submit
memory/1812-56-0x0000000000000000-mapping.dmp

Download
memory/1952-54-0x0000000000000000-mapping.dmp

Download
memory/1952-55-0x00000000762D1000-0x00000000762D3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads