wannacry | 46bb61b2ce95915c363845b5e3e9d76fc320e3dff3e05c60b581917678a3f4df

General

Target

46bb61b2ce95915c363845b5e3e9d76fc320e3dff3e05c60b581917678a3f4df.dll
Size

5.0MB
MD5

621bfac4cd27269134254c88cf1c7013
SHA1

4aba70305bf2f5cfefc9de70fff6ea98b25b1b29
SHA256

46bb61b2ce95915c363845b5e3e9d76fc320e3dff3e05c60b581917678a3f4df
SHA512

c7cafd9a7bf33ce974590134d3bdb2a67cad7bfc864307495e87606e7fd08f3abe2019c0e65ddcdf45f65ce46971dfb0c9ac696c09fa3f344c7900ef6fdb2002

Score

10^/10

wannacry discovery ransomware suricata worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
suricata: ET MALWARE Known Sinkhole Response Kryptos Logic
suricata: ET MALWARE Known Sinkhole Response Kryptos Logic
suricata
suricata: ET MALWARE W32/WannaCry.Ransomware Killswitch Domain HTTP Request 1
suricata: ET MALWARE W32/WannaCry.Ransomware Killswitch Domain HTTP Request 1
suricata
Contacts a large (1237) 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

1828 mssecsvc.exe
1276 mssecsvc.exe
1564 tasksche.exe

pid	process
1828	mssecsvc.exe
1276	mssecsvc.exe
1564	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\Connections	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-48-2f-17-bd-94\WpadDecisionTime = d06d97a4e791d801	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\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7B1C7B4-FD7E-4C3A-9A72-E421FB7FE318}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7B1C7B4-FD7E-4C3A-9A72-E421FB7FE318}\WpadDecisionTime = d06d97a4e791d801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7B1C7B4-FD7E-4C3A-9A72-E421FB7FE318}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7B1C7B4-FD7E-4C3A-9A72-E421FB7FE318}\WpadNetworkName = "Network 3"	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-48-2f-17-bd-94	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7B1C7B4-FD7E-4C3A-9A72-E421FB7FE318}\46-48-2f-17-bd-94	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-48-2f-17-bd-94\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7B1C7B4-FD7E-4C3A-9A72-E421FB7FE318}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-48-2f-17-bd-94\WpadDecision = "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 (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	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 328 wrote to memory of 324	328	rundll32.exe	rundll32.exe
PID 328 wrote to memory of 324	328	rundll32.exe	rundll32.exe
PID 328 wrote to memory of 324	328	rundll32.exe	rundll32.exe
PID 328 wrote to memory of 324	328	rundll32.exe	rundll32.exe
PID 328 wrote to memory of 324	328	rundll32.exe	rundll32.exe
PID 328 wrote to memory of 324	328	rundll32.exe	rundll32.exe
PID 328 wrote to memory of 324	328	rundll32.exe	rundll32.exe
PID 324 wrote to memory of 1828	324	rundll32.exe	mssecsvc.exe
PID 324 wrote to memory of 1828	324	rundll32.exe	mssecsvc.exe
PID 324 wrote to memory of 1828	324	rundll32.exe	mssecsvc.exe
PID 324 wrote to memory of 1828	324	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\46bb61b2ce95915c363845b5e3e9d76fc320e3dff3e05c60b581917678a3f4df.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:328

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\46bb61b2ce95915c363845b5e3e9d76fc320e3dff3e05c60b581917678a3f4df.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:324

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1828

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1564

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:1276

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

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
12a2af8a31c89aa0db17e737acd67e91

SHA1
6f8078f618e8e240188d04453613eefef10a2416

SHA256
4abed8f38696446653350b0231f135be6c6acd6e57d6e9b15975f79ce1b79dcf

SHA512
857a07b14ce0163e3b74fca885e8524742f753abb4bd249f1998db2ef72fe1bba9231051d87449e90d7cad02db0b6f9cb3a2083c3f66396af76fdff13e8f4db2

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

MD5
12a2af8a31c89aa0db17e737acd67e91

SHA1
6f8078f618e8e240188d04453613eefef10a2416

SHA256
4abed8f38696446653350b0231f135be6c6acd6e57d6e9b15975f79ce1b79dcf

SHA512
857a07b14ce0163e3b74fca885e8524742f753abb4bd249f1998db2ef72fe1bba9231051d87449e90d7cad02db0b6f9cb3a2083c3f66396af76fdff13e8f4db2

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

MD5
12a2af8a31c89aa0db17e737acd67e91

SHA1
6f8078f618e8e240188d04453613eefef10a2416

SHA256
4abed8f38696446653350b0231f135be6c6acd6e57d6e9b15975f79ce1b79dcf

SHA512
857a07b14ce0163e3b74fca885e8524742f753abb4bd249f1998db2ef72fe1bba9231051d87449e90d7cad02db0b6f9cb3a2083c3f66396af76fdff13e8f4db2

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

MD5
0cd18d69348c5b9996ee1305ebe9b733

SHA1
88d9ecccb28fa270e8fa066ff3a78350a5c795ce

SHA256
80432c03277cb1a56b9855adf12de0b13ff5a08bce5e316fd0d38f93a1c23019

SHA512
87119a6ad0a268ee038060753670e6789fb36418b3a57c6328a397f81002b992bc9be6d0befeedfb7dda1d639780f181c0eae33666f3b2ef539915a8090a1d02

Download Submit
memory/324-54-0x0000000000000000-mapping.dmp

Download
memory/324-55-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/1828-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads