wannacry | 1618f3bb469668ff51dfcd2e302c866a424d3fe17eb49159934e85421a3a6668

General

Target

acb0a02446bbf730fcf89fdd403497f5.dll
Size

5.0MB
MD5

acb0a02446bbf730fcf89fdd403497f5
SHA1

8ec4f36c98ba976ba397edb0fc09aa61c4786271
SHA256

1618f3bb469668ff51dfcd2e302c866a424d3fe17eb49159934e85421a3a6668
SHA512

438dd76212fa83d26b92d5bd18dd69aba72cf759598b86fa4d126a37e8cab6e7fa4d90981e8c43cbffff6f8f8ee5352d9bb5c5f741999b095493b1a25214e7f5

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1249) 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:

mssecsvc.exemssecsvc.exe

pid process

2016 mssecsvc.exe
1116 mssecsvc.exe

pid	process
2016	mssecsvc.exe
1116	mssecsvc.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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-73-19-f0-fe-52	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
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\{2531508D-7B48-4D13-9E20-F588F5D794BB}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2531508D-7B48-4D13-9E20-F588F5D794BB}\WpadDecisionReason = "1"	mssecsvc.exe
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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	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\{2531508D-7B48-4D13-9E20-F588F5D794BB}\WpadDecisionTime = 4068045be19bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2531508D-7B48-4D13-9E20-F588F5D794BB}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2531508D-7B48-4D13-9E20-F588F5D794BB}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-73-19-f0-fe-52\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
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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2531508D-7B48-4D13-9E20-F588F5D794BB}\9e-73-19-f0-fe-52	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-73-19-f0-fe-52\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-73-19-f0-fe-52\WpadDecisionTime = 4068045be19bd801	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1960 wrote to memory of 1704	1960	rundll32.exe	rundll32.exe
PID 1960 wrote to memory of 1704	1960	rundll32.exe	rundll32.exe
PID 1960 wrote to memory of 1704	1960	rundll32.exe	rundll32.exe
PID 1960 wrote to memory of 1704	1960	rundll32.exe	rundll32.exe
PID 1960 wrote to memory of 1704	1960	rundll32.exe	rundll32.exe
PID 1960 wrote to memory of 1704	1960	rundll32.exe	rundll32.exe
PID 1960 wrote to memory of 1704	1960	rundll32.exe	rundll32.exe
PID 1704 wrote to memory of 2016	1704	rundll32.exe	mssecsvc.exe
PID 1704 wrote to memory of 2016	1704	rundll32.exe	mssecsvc.exe
PID 1704 wrote to memory of 2016	1704	rundll32.exe	mssecsvc.exe
PID 1704 wrote to memory of 2016	1704	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\acb0a02446bbf730fcf89fdd403497f5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\acb0a02446bbf730fcf89fdd403497f5.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1704

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2016

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:1116

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
f0aedaae90762d7baf6892ddf21123dc

SHA1
70d031c8403c118d157b1ab7f474b8b01441d789

SHA256
5b86466316cbe584fb86aa186ef2a06d40c2f6b9f58c5b69aa64aac8cab1f7a0

SHA512
06cab9760a98ed58ad3d298fde8955307c83338d5f7fc9793e599afbb71e0f74e4f2ed39474d8376d710dc3660c3cce2677cbf95569410897f79b9e771330bf8

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

MD5
f0aedaae90762d7baf6892ddf21123dc

SHA1
70d031c8403c118d157b1ab7f474b8b01441d789

SHA256
5b86466316cbe584fb86aa186ef2a06d40c2f6b9f58c5b69aa64aac8cab1f7a0

SHA512
06cab9760a98ed58ad3d298fde8955307c83338d5f7fc9793e599afbb71e0f74e4f2ed39474d8376d710dc3660c3cce2677cbf95569410897f79b9e771330bf8

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

MD5
f0aedaae90762d7baf6892ddf21123dc

SHA1
70d031c8403c118d157b1ab7f474b8b01441d789

SHA256
5b86466316cbe584fb86aa186ef2a06d40c2f6b9f58c5b69aa64aac8cab1f7a0

SHA512
06cab9760a98ed58ad3d298fde8955307c83338d5f7fc9793e599afbb71e0f74e4f2ed39474d8376d710dc3660c3cce2677cbf95569410897f79b9e771330bf8

Download Submit
memory/1704-54-0x0000000000000000-mapping.dmp

Download
memory/1704-55-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

Download
memory/2016-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads