wannacry | 50e4e4a7bc3167441392789c32897736154d552795c9a8bad0d91558eaaf0f7e

General

Target

50e4e4a7bc3167441392789c32897736154d552795c9a8bad0d91558eaaf0f7e.dll
Size

5.0MB
MD5

ef308fb6f974a766ab59bb68b1864aa1
SHA1

9a79e44bd36f3405c319255c7a17e3c4ad98fa99
SHA256

50e4e4a7bc3167441392789c32897736154d552795c9a8bad0d91558eaaf0f7e
SHA512

75bc2d6ad9dcd4070f0133f560a4c5ad1bf2050bc70430c71ae7c163f5fa9a42441aebfde143c2aec024752b0e509ce326957f8ba09d9de7336bd49c8b4932dd

Score

10^/10

wannacry discovery ransomware suricata worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
suricata: ET MALWARE Known Sinkhole Response Kryptos Logic
suricata: ET MALWARE Known Sinkhole Response Kryptos Logic
suricata
suricata: ET MALWARE W32/WannaCry.Ransomware Killswitch Domain HTTP Request 1
suricata: ET MALWARE W32/WannaCry.Ransomware Killswitch Domain HTTP Request 1
suricata
Contacts a large (1303) 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

1728 mssecsvc.exe
1640 mssecsvc.exe
2012 tasksche.exe

pid	process
1728	mssecsvc.exe
1640	mssecsvc.exe
2012	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90D956C4-B25B-4C53-B2CD-E42F97A0A996}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90D956C4-B25B-4C53-B2CD-E42F97A0A996}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-1d-8c-03-f4-c2	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90D956C4-B25B-4C53-B2CD-E42F97A0A996}\42-1d-8c-03-f4-c2	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-1d-8c-03-f4-c2\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	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	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\ZoneMap\	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\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90D956C4-B25B-4C53-B2CD-E42F97A0A996}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-1d-8c-03-f4-c2\WpadDecisionTime = b066ee29ed9ad801	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90D956C4-B25B-4C53-B2CD-E42F97A0A996}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90D956C4-B25B-4C53-B2CD-E42F97A0A996}\WpadDecisionTime = b066ee29ed9ad801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-1d-8c-03-f4-c2\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1920 wrote to memory of 1056	1920	rundll32.exe	rundll32.exe
PID 1920 wrote to memory of 1056	1920	rundll32.exe	rundll32.exe
PID 1920 wrote to memory of 1056	1920	rundll32.exe	rundll32.exe
PID 1920 wrote to memory of 1056	1920	rundll32.exe	rundll32.exe
PID 1920 wrote to memory of 1056	1920	rundll32.exe	rundll32.exe
PID 1920 wrote to memory of 1056	1920	rundll32.exe	rundll32.exe
PID 1920 wrote to memory of 1056	1920	rundll32.exe	rundll32.exe
PID 1056 wrote to memory of 1728	1056	rundll32.exe	mssecsvc.exe
PID 1056 wrote to memory of 1728	1056	rundll32.exe	mssecsvc.exe
PID 1056 wrote to memory of 1728	1056	rundll32.exe	mssecsvc.exe
PID 1056 wrote to memory of 1728	1056	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\50e4e4a7bc3167441392789c32897736154d552795c9a8bad0d91558eaaf0f7e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1920

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\50e4e4a7bc3167441392789c32897736154d552795c9a8bad0d91558eaaf0f7e.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1056

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1728

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2012

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:1640

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
316f0b51bf230dec5310b10fcb289738

SHA1
fc8a4d6414d4031123d51db71a6bf1b8a06ab59d

SHA256
94bf8ee0f9799d8f17eda2abdebe5b1d98df34a37fea8ce7ee865b043a3ef9f3

SHA512
4f84b242429608c7143466e7db908534f413de0a7d69bd61540c302792f40089a7268ae6f0419d80feb8b8d91af1d10d22aecfc904b94fa318e21bf195140a12

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

MD5
316f0b51bf230dec5310b10fcb289738

SHA1
fc8a4d6414d4031123d51db71a6bf1b8a06ab59d

SHA256
94bf8ee0f9799d8f17eda2abdebe5b1d98df34a37fea8ce7ee865b043a3ef9f3

SHA512
4f84b242429608c7143466e7db908534f413de0a7d69bd61540c302792f40089a7268ae6f0419d80feb8b8d91af1d10d22aecfc904b94fa318e21bf195140a12

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

MD5
316f0b51bf230dec5310b10fcb289738

SHA1
fc8a4d6414d4031123d51db71a6bf1b8a06ab59d

SHA256
94bf8ee0f9799d8f17eda2abdebe5b1d98df34a37fea8ce7ee865b043a3ef9f3

SHA512
4f84b242429608c7143466e7db908534f413de0a7d69bd61540c302792f40089a7268ae6f0419d80feb8b8d91af1d10d22aecfc904b94fa318e21bf195140a12

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

MD5
a2f96631c02d1fb0b0c00c79c065ce6d

SHA1
d84bb7084c2e14079ae4413a2701236a943fec96

SHA256
f222f489923b30cf69370ab007683866a238e4e125395578a8e50d04ff94b5ee

SHA512
9eb48e3b65b2f28fb16ffbc873e863fce48b06eb186d62cd838d72f27a4a5ebe802912869697a0f0f08f658fb6a8e6f24f1c48ec0afee01cec9699c1d20035d6

Download Submit
memory/1056-54-0x0000000000000000-mapping.dmp

Download
memory/1056-55-0x00000000754C1000-0x00000000754C3000-memory.dmp

Filesize
8KB

Download
memory/1728-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads