wannacry | 3b35adf078a6301cd46a48a0084ee4c0d3637a9a2813522966f6a25741e44e7a

General

Target

3b35adf078a6301cd46a48a0084ee4c0d3637a9a2813522966f6a25741e44e7a.dll
Size

5.0MB
MD5

b2a474da5eb5dae63a1f6768d0a4e7fe
SHA1

72e158160ce94775627c18539e291ce22b5f0c61
SHA256

3b35adf078a6301cd46a48a0084ee4c0d3637a9a2813522966f6a25741e44e7a
SHA512

c85970e8c2170c9fafc38d0e8fd51060de7fd1c0ca84fea325c900d9d0d556169133f9d65627276c427105de8153692382732348783272a5daf7ede23be3c156
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAH:+DqPoBhz1aRxcSUDk36SA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3224) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2124 mssecsvc.exe
2984 mssecsvc.exe
2884 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 Discovery
T1046

pid	process
2124	mssecsvc.exe
2984	mssecsvc.exe
2884	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A4125397-A7F8-4282-9D89-31BAAAA5C6B3}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A4125397-A7F8-4282-9D89-31BAAAA5C6B3}\WpadNetworkName = "Network 3"	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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0103000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-76-77-7f-33-5b	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A4125397-A7F8-4282-9D89-31BAAAA5C6B3}\ae-76-77-7f-33-5b	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A4125397-A7F8-4282-9D89-31BAAAA5C6B3}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A4125397-A7F8-4282-9D89-31BAAAA5C6B3}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-76-77-7f-33-5b\WpadDecision = "0"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A4125397-A7F8-4282-9D89-31BAAAA5C6B3}\WpadDecisionTime = 5055d22e83dbda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-76-77-7f-33-5b\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-76-77-7f-33-5b\WpadDecisionTime = 5055d22e83dbda01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2576 wrote to memory of 1072	2576	rundll32.exe	rundll32.exe
PID 2576 wrote to memory of 1072	2576	rundll32.exe	rundll32.exe
PID 2576 wrote to memory of 1072	2576	rundll32.exe	rundll32.exe
PID 2576 wrote to memory of 1072	2576	rundll32.exe	rundll32.exe
PID 2576 wrote to memory of 1072	2576	rundll32.exe	rundll32.exe
PID 2576 wrote to memory of 1072	2576	rundll32.exe	rundll32.exe
PID 2576 wrote to memory of 1072	2576	rundll32.exe	rundll32.exe
PID 1072 wrote to memory of 2124	1072	rundll32.exe	mssecsvc.exe
PID 1072 wrote to memory of 2124	1072	rundll32.exe	mssecsvc.exe
PID 1072 wrote to memory of 2124	1072	rundll32.exe	mssecsvc.exe
PID 1072 wrote to memory of 2124	1072	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b35adf078a6301cd46a48a0084ee4c0d3637a9a2813522966f6a25741e44e7a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2576

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b35adf078a6301cd46a48a0084ee4c0d3637a9a2813522966f6a25741e44e7a.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1072

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2124

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2884

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:2984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
90ec2e781608aac41e53b13d44634e8a

SHA1
0eda5b8f1ab5d0c0c2ff3c890b3f18ed8683e7c1

SHA256
5850c5a1341a9ef3fc173ed5e6314d4407a34971092b2e311c5bd571d8eb37c4

SHA512
e2206de7c8a50dc692e6eaa49b96d07f3d6ac05503c0e155a46f8c72f48140abca4b68d8c56ae083dc2db96574e4e486c81f4c7aa94a5339b8a7176665ba681f

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
d644d8eb2cdba655b7b24706b9637838

SHA1
7f3c8f4aab41bb8770839286af0faeb8d1d7dadc

SHA256
12a6999da87e715dc425ce9c334414446dd8fca27a8c07b8a7449b1f67c16b6b

SHA512
bef359aef93b1e76a2db053dbeee05965e43dcd5bbfd94157aea820d7fc1ce72687fe0ad11a958daf8e7aead4f4ae20f93e732765dc8e7335c395c660961002f

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads