wannacry | 9788bb4aa5832885b44033081fbf1e36cfb177f55c90b6e75eb7f60f35400c24

General

Target

8b2abbfef3b29b00800de344537eb9fa.dll
Size

5.0MB
MD5

8b2abbfef3b29b00800de344537eb9fa
SHA1

f3c952eebc98b005b959edd1dd1f11a1e6b35d80
SHA256

9788bb4aa5832885b44033081fbf1e36cfb177f55c90b6e75eb7f60f35400c24
SHA512

2f1c22dfe5f464bd94677c47ba0b1b45fb6014cb6d1bb454f92d511745f150be68901945723f838bb08bfcb1e4e858f08f9644090de0bcab05bc623ed6572eef

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1230) 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

1460 mssecsvc.exe
976 mssecsvc.exe
268 tasksche.exe

pid	process
1460	mssecsvc.exe
976	mssecsvc.exe
268	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 (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\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}\ca-73-de-ca-c2-7d	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-73-de-ca-c2-7d\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}\WpadDecisionTime = f0a2d7e5e89bd801	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-73-de-ca-c2-7d\WpadDecisionTime = f0a2d7e5e89bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-73-de-ca-c2-7d\WpadDecision = "0"	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
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
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\Content\CachePrefix	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	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\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-73-de-ca-c2-7d	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1912 wrote to memory of 2032	1912	rundll32.exe	rundll32.exe
PID 1912 wrote to memory of 2032	1912	rundll32.exe	rundll32.exe
PID 1912 wrote to memory of 2032	1912	rundll32.exe	rundll32.exe
PID 1912 wrote to memory of 2032	1912	rundll32.exe	rundll32.exe
PID 1912 wrote to memory of 2032	1912	rundll32.exe	rundll32.exe
PID 1912 wrote to memory of 2032	1912	rundll32.exe	rundll32.exe
PID 1912 wrote to memory of 2032	1912	rundll32.exe	rundll32.exe
PID 2032 wrote to memory of 1460	2032	rundll32.exe	mssecsvc.exe
PID 2032 wrote to memory of 1460	2032	rundll32.exe	mssecsvc.exe
PID 2032 wrote to memory of 1460	2032	rundll32.exe	mssecsvc.exe
PID 2032 wrote to memory of 1460	2032	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b2abbfef3b29b00800de344537eb9fa.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1912

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b2abbfef3b29b00800de344537eb9fa.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2032

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1460

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:268

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:976

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\mssecsvc.exe
Filesize
3.6MB

MD5
58b2093012bd3668fd5f25701f60e5d5

SHA1
a2269c6da9a35c44aaaa3108e0fde9b5da62d4d5

SHA256
3717835131e56cd35b443e7db6fe012f49317257340e5c6018dc51d24e4c48cd

SHA512
bc5cc42922f05dc2ed2047d18f23f60c0a7e930c23978209b05d9b6c8b1ef70e7dbef5c72065991c6b55485078e1bed91be7637491b59d72679e489f10d34ff1

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

MD5
58b2093012bd3668fd5f25701f60e5d5

SHA1
a2269c6da9a35c44aaaa3108e0fde9b5da62d4d5

SHA256
3717835131e56cd35b443e7db6fe012f49317257340e5c6018dc51d24e4c48cd

SHA512
bc5cc42922f05dc2ed2047d18f23f60c0a7e930c23978209b05d9b6c8b1ef70e7dbef5c72065991c6b55485078e1bed91be7637491b59d72679e489f10d34ff1

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

MD5
58b2093012bd3668fd5f25701f60e5d5

SHA1
a2269c6da9a35c44aaaa3108e0fde9b5da62d4d5

SHA256
3717835131e56cd35b443e7db6fe012f49317257340e5c6018dc51d24e4c48cd

SHA512
bc5cc42922f05dc2ed2047d18f23f60c0a7e930c23978209b05d9b6c8b1ef70e7dbef5c72065991c6b55485078e1bed91be7637491b59d72679e489f10d34ff1

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

MD5
115c1735c25b8af994675a1ad8d8150f

SHA1
89932dab91715928bba3c62f14a614a425a9ab36

SHA256
95b05236f98781f650dfc7819649a4629f1a6e4a81a00ed0e63d6e1edd779c88

SHA512
6b9c0c859c4c579cc21baf01ebdb5ec48371becce809b172e405023f47a7cca33fe3257220c5c95ac7f934f92fc789efc0ea3668e5d7f45c514775cb6fca3bc9

Download Submit
memory/1460-56-0x0000000000000000-mapping.dmp

Download
memory/2032-54-0x0000000000000000-mapping.dmp

Download
memory/2032-55-0x0000000076071000-0x0000000076073000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads