wannacry | 6f282c0df25a61bef8bd83b317d7c9493b575717b691e30d63da8cb5ec898e7b

General

Target

WannaCry2.dll
Size

5.0MB
MD5

3e142c642b1d1e6a01ae319ccbe487a3
SHA1

5653bf6e1613bfab68d6d05111b312ed0dceb448
SHA256

6f282c0df25a61bef8bd83b317d7c9493b575717b691e30d63da8cb5ec898e7b
SHA512

e1215c551e96f2f6e3b5266ef845853fb11e3699ae554bbbec51a8e4c6c91763df1242290dc167b129e96aa33665edd5d3d350d59479c1060f1837052e811640

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 (3122) 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

8 mssecsvc.exe
1508 mssecsvc.exe
3236 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 Scanning
T1046
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

pid	process
8	mssecsvc.exe
1508	mssecsvc.exe
3236	tasksche.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 5 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1240 wrote to memory of 2160	1240	rundll32.exe	rundll32.exe
PID 1240 wrote to memory of 2160	1240	rundll32.exe	rundll32.exe
PID 1240 wrote to memory of 2160	1240	rundll32.exe	rundll32.exe
PID 2160 wrote to memory of 8	2160	rundll32.exe	mssecsvc.exe
PID 2160 wrote to memory of 8	2160	rundll32.exe	mssecsvc.exe
PID 2160 wrote to memory of 8	2160	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\WannaCry2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1240

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\WannaCry2.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2160

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:8

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3236

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1508

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

2

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
7e8224b83706096a14573b5a1a411314

SHA1
89bf59ccdbde5de5d1eaeac797470afa6c19cfb6

SHA256
d8ad2b8c468d3262291f2a86a453a2fef3dbd0600faf85b4df7a3978140ef4b3

SHA512
895ac90515670a435482af2b3dd6d348c31443d4a1fef625c278936e3636875f7a315645d1b31670a938a4dbce34cb032f4acae7ab9f43910369d981ec510b2b

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

MD5
7e8224b83706096a14573b5a1a411314

SHA1
89bf59ccdbde5de5d1eaeac797470afa6c19cfb6

SHA256
d8ad2b8c468d3262291f2a86a453a2fef3dbd0600faf85b4df7a3978140ef4b3

SHA512
895ac90515670a435482af2b3dd6d348c31443d4a1fef625c278936e3636875f7a315645d1b31670a938a4dbce34cb032f4acae7ab9f43910369d981ec510b2b

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

MD5
7e8224b83706096a14573b5a1a411314

SHA1
89bf59ccdbde5de5d1eaeac797470afa6c19cfb6

SHA256
d8ad2b8c468d3262291f2a86a453a2fef3dbd0600faf85b4df7a3978140ef4b3

SHA512
895ac90515670a435482af2b3dd6d348c31443d4a1fef625c278936e3636875f7a315645d1b31670a938a4dbce34cb032f4acae7ab9f43910369d981ec510b2b

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

MD5
66705a0978e9146d15b753dd2293c2ef

SHA1
3e132c60046917618e080ea8e0d477ae91fd4d73

SHA256
547ed4d6e8392eebe30c2f755f529c1079bb17907d32a532261a1fe2dd1dc9c0

SHA512
6b9cde50b901c297b4d783bf23c59202c7a45d94f6cc2545575a8f374f43673534883ce627edc990d7b1cd14c4130b1a400624df1bde923896a535da0cb82e16

Download Submit
memory/8-131-0x0000000000000000-mapping.dmp

Download
memory/2160-130-0x0000000000000000-mapping.dmp

Download

Analysis

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