wannacry | 8984534b84ac860b4f2a8e99a6fe911b22cc21320ba1bb0c5a1bb1fd1d52bea1

General

Target

14f964c2a20d1e25ffc3457367909b76.dll
Size

5.0MB
MD5

14f964c2a20d1e25ffc3457367909b76
SHA1

38095333280b2976026866ee9efd050cb1646b94
SHA256

8984534b84ac860b4f2a8e99a6fe911b22cc21320ba1bb0c5a1bb1fd1d52bea1
SHA512

e28c163a09be95d29fe126b4f3bd393b60c52e70400180479fd4c1551fcaf47a366e4a4a158979504431d60b3300285b8c2574d23742515aec7b6c7ff9871f91

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1310) 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

1992 mssecsvc.exe
1664 mssecsvc.exe
1680 tasksche.exe

pid	process
1992	mssecsvc.exe
1664	mssecsvc.exe
1680	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\Wpad\6a-75-1b-2d-33-8d	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0101000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C7A15239-4A47-4C67-A768-39B2D80D2CED}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C7A15239-4A47-4C67-A768-39B2D80D2CED}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6a-75-1b-2d-33-8d\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6a-75-1b-2d-33-8d\WpadDecisionTime = e0868485e69bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6a-75-1b-2d-33-8d\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C7A15239-4A47-4C67-A768-39B2D80D2CED}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C7A15239-4A47-4C67-A768-39B2D80D2CED}\6a-75-1b-2d-33-8d	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C7A15239-4A47-4C67-A768-39B2D80D2CED}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C7A15239-4A47-4C67-A768-39B2D80D2CED}\WpadDecisionTime = e0868485e69bd801	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1376 wrote to memory of 2020	1376	rundll32.exe	rundll32.exe
PID 1376 wrote to memory of 2020	1376	rundll32.exe	rundll32.exe
PID 1376 wrote to memory of 2020	1376	rundll32.exe	rundll32.exe
PID 1376 wrote to memory of 2020	1376	rundll32.exe	rundll32.exe
PID 1376 wrote to memory of 2020	1376	rundll32.exe	rundll32.exe
PID 1376 wrote to memory of 2020	1376	rundll32.exe	rundll32.exe
PID 1376 wrote to memory of 2020	1376	rundll32.exe	rundll32.exe
PID 2020 wrote to memory of 1992	2020	rundll32.exe	mssecsvc.exe
PID 2020 wrote to memory of 1992	2020	rundll32.exe	mssecsvc.exe
PID 2020 wrote to memory of 1992	2020	rundll32.exe	mssecsvc.exe
PID 2020 wrote to memory of 1992	2020	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\14f964c2a20d1e25ffc3457367909b76.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1376

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\14f964c2a20d1e25ffc3457367909b76.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2020

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1992

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1680

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:1664

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
a955573b9cd03010b04bdf2c6a84fc15

SHA1
a57f622ba69839692b8cee7d1c63e5a5efba8061

SHA256
9d6e87ff69e756a16a62331500f493d21ee5a0e7d22b106a55832a95963d679f

SHA512
be2961261c49c16ae324d8a8035341dd650cfcf793afd5f0c28712f54d1e74085fe112564093298c3c9e93a6944d085f7ebf77bfc72a025d7115dce6ed0a11c4

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
a955573b9cd03010b04bdf2c6a84fc15

SHA1
a57f622ba69839692b8cee7d1c63e5a5efba8061

SHA256
9d6e87ff69e756a16a62331500f493d21ee5a0e7d22b106a55832a95963d679f

SHA512
be2961261c49c16ae324d8a8035341dd650cfcf793afd5f0c28712f54d1e74085fe112564093298c3c9e93a6944d085f7ebf77bfc72a025d7115dce6ed0a11c4

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
a955573b9cd03010b04bdf2c6a84fc15

SHA1
a57f622ba69839692b8cee7d1c63e5a5efba8061

SHA256
9d6e87ff69e756a16a62331500f493d21ee5a0e7d22b106a55832a95963d679f

SHA512
be2961261c49c16ae324d8a8035341dd650cfcf793afd5f0c28712f54d1e74085fe112564093298c3c9e93a6944d085f7ebf77bfc72a025d7115dce6ed0a11c4

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
549c3ec0f0c0fb3687d3e696d9c8ac0a

SHA1
aa0ed5c2e566d7b3d40511051bb69f10b99a802e

SHA256
384f1b1ae92b7b5c0ee90a48773ab7cb77c1f3077e84cf5ac97f97c12838a01b

SHA512
97180644fd902d11e317fb9ebcb06156ff9508cdd5103beec0a87aa983bfc791820966f168de5d2f61a26df4d3231473cd83434b8748fcfb34258a9a1434d9ee

Download Submit
memory/1992-56-0x0000000000000000-mapping.dmp

Download
memory/2020-54-0x0000000000000000-mapping.dmp

Download
memory/2020-55-0x0000000074E11000-0x0000000074E13000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads