wannacry | 3241668509395db564b5f7c76a5e6480525b31abe58077e81e7b019707518376

General

Target

3241668509395db564b5f7c76a5e6480525b31abe58077e81e7b019707518376.dll
Size

5.0MB
MD5

656cb839f610e919e77d5f3ae4c5c21a
SHA1

f382cebebcff9ce066ab3487446a43f75d38c6e0
SHA256

3241668509395db564b5f7c76a5e6480525b31abe58077e81e7b019707518376
SHA512

2121d12b9e5b7c075530d7078d2f42d5e1817c76b00df610473f4bf6d7610dea8bccd6863577c763f6ebcc8a3c54be59de2f74db6bfd60fabd41a119a0f9f519

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (548) 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

1720 mssecsvr.exe
984 mssecsvr.exe

pid	process
1720	mssecsvr.exe
984	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\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	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\{783CE2C9-3184-4CE6-B262-F9EA483ADFB1}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-c1-b6-ea-72-f2	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\ProxyEnable = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{783CE2C9-3184-4CE6-B262-F9EA483ADFB1}	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{783CE2C9-3184-4CE6-B262-F9EA483ADFB1}\WpadDecisionTime = 40d80f448a84d801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-c1-b6-ea-72-f2\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{783CE2C9-3184-4CE6-B262-F9EA483ADFB1}\WpadDecision = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{783CE2C9-3184-4CE6-B262-F9EA483ADFB1}\WpadNetworkName = "Network 2"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-c1-b6-ea-72-f2\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0099000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{783CE2C9-3184-4CE6-B262-F9EA483ADFB1}\22-c1-b6-ea-72-f2	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-c1-b6-ea-72-f2\WpadDecisionTime = 40d80f448a84d801	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	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 780 wrote to memory of 908	780	rundll32.exe	rundll32.exe
PID 780 wrote to memory of 908	780	rundll32.exe	rundll32.exe
PID 780 wrote to memory of 908	780	rundll32.exe	rundll32.exe
PID 780 wrote to memory of 908	780	rundll32.exe	rundll32.exe
PID 780 wrote to memory of 908	780	rundll32.exe	rundll32.exe
PID 780 wrote to memory of 908	780	rundll32.exe	rundll32.exe
PID 780 wrote to memory of 908	780	rundll32.exe	rundll32.exe
PID 908 wrote to memory of 1720	908	rundll32.exe	mssecsvr.exe
PID 908 wrote to memory of 1720	908	rundll32.exe	mssecsvr.exe
PID 908 wrote to memory of 1720	908	rundll32.exe	mssecsvr.exe
PID 908 wrote to memory of 1720	908	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3241668509395db564b5f7c76a5e6480525b31abe58077e81e7b019707518376.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:780

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3241668509395db564b5f7c76a5e6480525b31abe58077e81e7b019707518376.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:908

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1720

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:984

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
34a767ff1599ab3d081db359298750fc

SHA1
6d411b119759803fb3ab5590cc65753e43e9ca9a

SHA256
7a2e64cc5530442aa6f7fa1181d104e6b95d61836215ea6d4f4e014c3f39e02d

SHA512
8d3d239b001d62272e999fb70f53093555d14cacf34aa72bc8f3734e73a2d068dcfea5dc416da6a567277ebe9928438e851604436e85cf3532fc31825851cbff

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

MD5
34a767ff1599ab3d081db359298750fc

SHA1
6d411b119759803fb3ab5590cc65753e43e9ca9a

SHA256
7a2e64cc5530442aa6f7fa1181d104e6b95d61836215ea6d4f4e014c3f39e02d

SHA512
8d3d239b001d62272e999fb70f53093555d14cacf34aa72bc8f3734e73a2d068dcfea5dc416da6a567277ebe9928438e851604436e85cf3532fc31825851cbff

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

MD5
34a767ff1599ab3d081db359298750fc

SHA1
6d411b119759803fb3ab5590cc65753e43e9ca9a

SHA256
7a2e64cc5530442aa6f7fa1181d104e6b95d61836215ea6d4f4e014c3f39e02d

SHA512
8d3d239b001d62272e999fb70f53093555d14cacf34aa72bc8f3734e73a2d068dcfea5dc416da6a567277ebe9928438e851604436e85cf3532fc31825851cbff

Download Submit
memory/908-54-0x0000000000000000-mapping.dmp

Download
memory/908-55-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/1720-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads