wannacry | 78ecdd4f9eb36ea0463a549c4124b10bbb0fdf9be76d137737de08d701fd25d5

General

Target

9d709394669a9a07f5e759148968d465.dll
Size

5.0MB
MD5

9d709394669a9a07f5e759148968d465
SHA1

9a4416b56f18112b0694befc7c38f841c73f7c7a
SHA256

78ecdd4f9eb36ea0463a549c4124b10bbb0fdf9be76d137737de08d701fd25d5
SHA512

f0dfed6fb68b28ea39e18977bf821ce812f7034bfcc95661c6b71581389aee58ed9ec0872e8ae6029ff3c2ff75778d9bd0b24dcfbc6a6782724c9f2f1b9fbd5b

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1197) 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 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

1892 mssecsvr.exe
2016 mssecsvr.exe

pid	process
1892	mssecsvr.exe
2016	mssecsvr.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvr.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvr.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

File created C:\WINDOWS\mssecsvr.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvr.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadDecisionTime = a07a39d2e59bd801	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecision = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadDecision = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecisionTime = a07a39d2e59bd801	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00cd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\06-75-a7-dd-b9-dc	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 640 wrote to memory of 1420	640	rundll32.exe	rundll32.exe
PID 640 wrote to memory of 1420	640	rundll32.exe	rundll32.exe
PID 640 wrote to memory of 1420	640	rundll32.exe	rundll32.exe
PID 640 wrote to memory of 1420	640	rundll32.exe	rundll32.exe
PID 640 wrote to memory of 1420	640	rundll32.exe	rundll32.exe
PID 640 wrote to memory of 1420	640	rundll32.exe	rundll32.exe
PID 640 wrote to memory of 1420	640	rundll32.exe	rundll32.exe
PID 1420 wrote to memory of 1892	1420	rundll32.exe	mssecsvr.exe
PID 1420 wrote to memory of 1892	1420	rundll32.exe	mssecsvr.exe
PID 1420 wrote to memory of 1892	1420	rundll32.exe	mssecsvr.exe
PID 1420 wrote to memory of 1892	1420	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d709394669a9a07f5e759148968d465.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d709394669a9a07f5e759148968d465.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1420

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1892

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2016

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\mssecsvr.exe
Filesize
2.2MB

MD5
0830d3b071fd2284fe81ba31a23a3f42

SHA1
6131eeb47e682e89e06a3b248003c9e70d28f8b6

SHA256
2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34

SHA512
a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
0830d3b071fd2284fe81ba31a23a3f42

SHA1
6131eeb47e682e89e06a3b248003c9e70d28f8b6

SHA256
2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34

SHA512
a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
0830d3b071fd2284fe81ba31a23a3f42

SHA1
6131eeb47e682e89e06a3b248003c9e70d28f8b6

SHA256
2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34

SHA512
a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464

Download Submit
memory/1420-54-0x0000000000000000-mapping.dmp

Download
memory/1420-55-0x0000000076291000-0x0000000076293000-memory.dmp

Filesize
8KB

Download
memory/1892-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads