wannacry | 97df26af59eb3281d408e663ad03a4b035d355b5a61180fc1f56ffad6fa3cb46

General

Target

b075ffe9788c0befe9ba892d0844bfd0.dll
Size

5.0MB
MD5

b075ffe9788c0befe9ba892d0844bfd0
SHA1

84e32ea54473058cb16a201a4ced98da96cb1046
SHA256

97df26af59eb3281d408e663ad03a4b035d355b5a61180fc1f56ffad6fa3cb46
SHA512

91163e3658ad204f2b7d79758f3bc0f78ce07e1d75108a9df9f823baeea91ba1713415075d02b32d688318e1d1331debcabe66e063c7d98a28374499fc6fa039

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1201) 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

1080 mssecsvc.exe
1984 mssecsvc.exe
1188 tasksche.exe

pid	process
1080	mssecsvc.exe
1984	mssecsvc.exe
1188	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
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\ZoneMap\	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0EEF80D3-138B-418F-AD92-0CB3E092E7FE}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0EEF80D3-138B-418F-AD92-0CB3E092E7FE}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-87-9c-f9-89-17	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-87-9c-f9-89-17\WpadDecisionTime = e09fe643f89bd801	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\UNCAsIntranet = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0EEF80D3-138B-418F-AD92-0CB3E092E7FE}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0EEF80D3-138B-418F-AD92-0CB3E092E7FE}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0EEF80D3-138B-418F-AD92-0CB3E092E7FE}\1a-87-9c-f9-89-17	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c6000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0EEF80D3-138B-418F-AD92-0CB3E092E7FE}\WpadDecisionTime = e09fe643f89bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-87-9c-f9-89-17\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-87-9c-f9-89-17\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 768 wrote to memory of 1144	768	rundll32.exe	rundll32.exe
PID 768 wrote to memory of 1144	768	rundll32.exe	rundll32.exe
PID 768 wrote to memory of 1144	768	rundll32.exe	rundll32.exe
PID 768 wrote to memory of 1144	768	rundll32.exe	rundll32.exe
PID 768 wrote to memory of 1144	768	rundll32.exe	rundll32.exe
PID 768 wrote to memory of 1144	768	rundll32.exe	rundll32.exe
PID 768 wrote to memory of 1144	768	rundll32.exe	rundll32.exe
PID 1144 wrote to memory of 1080	1144	rundll32.exe	mssecsvc.exe
PID 1144 wrote to memory of 1080	1144	rundll32.exe	mssecsvc.exe
PID 1144 wrote to memory of 1080	1144	rundll32.exe	mssecsvc.exe
PID 1144 wrote to memory of 1080	1144	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b075ffe9788c0befe9ba892d0844bfd0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:768

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b075ffe9788c0befe9ba892d0844bfd0.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1144

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1080

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1188

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:1984

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
1a48a7039c683ba289ccb65853839fb3

SHA1
db5c80198d33e8c73bdee5689dda140fbba4d286

SHA256
6c2334686c26ae41d2239cabe33b2bee9301adcaf99a11a728c34fdd69a94779

SHA512
f70b981eaa3912c2d5bd4c018049181bf691a8a5b5f52d60f93efe4f12edf571a8c60385debe4e8df3326399044efd556910209008148fc01fb0f66d672074d9

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
1a48a7039c683ba289ccb65853839fb3

SHA1
db5c80198d33e8c73bdee5689dda140fbba4d286

SHA256
6c2334686c26ae41d2239cabe33b2bee9301adcaf99a11a728c34fdd69a94779

SHA512
f70b981eaa3912c2d5bd4c018049181bf691a8a5b5f52d60f93efe4f12edf571a8c60385debe4e8df3326399044efd556910209008148fc01fb0f66d672074d9

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
1a48a7039c683ba289ccb65853839fb3

SHA1
db5c80198d33e8c73bdee5689dda140fbba4d286

SHA256
6c2334686c26ae41d2239cabe33b2bee9301adcaf99a11a728c34fdd69a94779

SHA512
f70b981eaa3912c2d5bd4c018049181bf691a8a5b5f52d60f93efe4f12edf571a8c60385debe4e8df3326399044efd556910209008148fc01fb0f66d672074d9

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3bf1ef7d2e1802553efa25effb50361b

SHA1
e0b066fb51266cb92ef998b580b14009438a7ab2

SHA256
a01bd7f28cd0e27d5f8d37e87fb4c36ee980761b0cad0faa354bfb75f35527c1

SHA512
6c5c0dc19b587a9fe4efc20ee89c60e310fb7d6214404016b4c55f7052f3977bed4eeb57d2302c0a3f1ef4916e25f62d1774e362f7621db4fb82e800e254d4d9

Download Submit
memory/1080-56-0x0000000000000000-mapping.dmp

Download
memory/1144-54-0x0000000000000000-mapping.dmp

Download
memory/1144-55-0x0000000076AE1000-0x0000000076AE3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads