wannacry | 74c9c570b7b1b383e0f5a266f0f7e17c1336f99e2df28e8be76f7d358c34d707

General

Target

74c9c570b7b1b383e0f5a266f0f7e17c1336f99e2df28e8be76f7d358c34d707.dll
Size

5.0MB
MD5

da480470e229f27bb2632ade91b37300
SHA1

7da6b9048707adf18c997bcaec32d6bebc5580fb
SHA256

74c9c570b7b1b383e0f5a266f0f7e17c1336f99e2df28e8be76f7d358c34d707
SHA512

a39fba8d3b45345ed54dda14acecdbe815af7261eeabb7bd53ec321d31c0d1ad7a2d0e6e67c7596fbad9bc921c65f2635ec1dfb00805768124a2b17dd7c22d2d

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 (830) 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

1408 mssecsvc.exe
1400 mssecsvc.exe
992 tasksche.exe

pid	process
1408	mssecsvc.exe
1400	mssecsvc.exe
992	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\WpadDecisionTime = c0437ce1278dd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\WpadNetworkName = "Network 2"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f009a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-e1-a2-8e-f2-24	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-e1-a2-8e-f2-24\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-e1-a2-8e-f2-24\WpadDecisionTime = c0437ce1278dd801	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
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\fe-e1-a2-8e-f2-24\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\fe-e1-a2-8e-f2-24	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2024 wrote to memory of 1380	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1380	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1380	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1380	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1380	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1380	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1380	2024	rundll32.exe	rundll32.exe
PID 1380 wrote to memory of 1408	1380	rundll32.exe	mssecsvc.exe
PID 1380 wrote to memory of 1408	1380	rundll32.exe	mssecsvc.exe
PID 1380 wrote to memory of 1408	1380	rundll32.exe	mssecsvc.exe
PID 1380 wrote to memory of 1408	1380	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\74c9c570b7b1b383e0f5a266f0f7e17c1336f99e2df28e8be76f7d358c34d707.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2024

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\74c9c570b7b1b383e0f5a266f0f7e17c1336f99e2df28e8be76f7d358c34d707.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1380

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1408

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:992

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:1400

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
883c9282416c4b2cf418fbde83502b52

SHA1
3eefd8dc469a01c992241bd879202a7e9841b598

SHA256
fe2c8534a46d7fc3177c87912e725f05e09dc7739933c412d80bdde1f74dcdda

SHA512
081abae1ddea49b8aaac6f3b79387b297828a9c7d111672a96d840e2dd80f35d3d2625e0a8cdea25118befcc1d2e11638a509620f3cb1b4782ce8593a0c58983

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

MD5
883c9282416c4b2cf418fbde83502b52

SHA1
3eefd8dc469a01c992241bd879202a7e9841b598

SHA256
fe2c8534a46d7fc3177c87912e725f05e09dc7739933c412d80bdde1f74dcdda

SHA512
081abae1ddea49b8aaac6f3b79387b297828a9c7d111672a96d840e2dd80f35d3d2625e0a8cdea25118befcc1d2e11638a509620f3cb1b4782ce8593a0c58983

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

MD5
883c9282416c4b2cf418fbde83502b52

SHA1
3eefd8dc469a01c992241bd879202a7e9841b598

SHA256
fe2c8534a46d7fc3177c87912e725f05e09dc7739933c412d80bdde1f74dcdda

SHA512
081abae1ddea49b8aaac6f3b79387b297828a9c7d111672a96d840e2dd80f35d3d2625e0a8cdea25118befcc1d2e11638a509620f3cb1b4782ce8593a0c58983

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

MD5
913198f3e8dd9036ce5001f49b670fab

SHA1
f3db77750604a3c586544763630354e71825b736

SHA256
84101afa0756983f0274efab7890f377b22356281bdd236a4657844d958effb2

SHA512
098818ea840a28f33ff60af0f0fabe907cf5052c935192c7661ffdcbe06c015d6843c55fa9d5b02d7cdde6da447c9ec0018f7339ddaee494298bf61618000352

Download Submit
memory/1380-54-0x0000000000000000-mapping.dmp

Download
memory/1380-55-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download
memory/1408-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads