wannacry | 95a93ef50df18f72fcb79b3e640ec4f0bea20082d7ff85813ced6421464694e6

General

Target

c4cc252e2c08a9fe195af62e10cf6b6c.dll
Size

5.0MB
MD5

c4cc252e2c08a9fe195af62e10cf6b6c
SHA1

b96ac96be7460ae023dfe3bba345423f1cad2bd3
SHA256

95a93ef50df18f72fcb79b3e640ec4f0bea20082d7ff85813ced6421464694e6
SHA512

d0cbf7ea88499226250102d8909977840607a9ef5f3ea70556320541b32e6af829d29f0a668a29239c0ff09b300b5834ce47e4528b39aba3f4bb4c5e6d1da66e

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

1016 mssecsvc.exe
1780 mssecsvc.exe
436 tasksche.exe

pid	process
1016	mssecsvc.exe
1780	mssecsvc.exe
436	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 (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\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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-73-de-ca-c2-7d\WpadDecisionTime = 20b2c559e89bd801	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\Connections	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\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}\WpadDecision = "0"	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
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\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}\WpadDecisionTime = 20b2c559e89bd801	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C8490C58-6392-42BA-A4F6-9BFA049C02B9}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\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\WpadDecision = "0"	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\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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1892 wrote to memory of 1676	1892	rundll32.exe	rundll32.exe
PID 1892 wrote to memory of 1676	1892	rundll32.exe	rundll32.exe
PID 1892 wrote to memory of 1676	1892	rundll32.exe	rundll32.exe
PID 1892 wrote to memory of 1676	1892	rundll32.exe	rundll32.exe
PID 1892 wrote to memory of 1676	1892	rundll32.exe	rundll32.exe
PID 1892 wrote to memory of 1676	1892	rundll32.exe	rundll32.exe
PID 1892 wrote to memory of 1676	1892	rundll32.exe	rundll32.exe
PID 1676 wrote to memory of 1016	1676	rundll32.exe	mssecsvc.exe
PID 1676 wrote to memory of 1016	1676	rundll32.exe	mssecsvc.exe
PID 1676 wrote to memory of 1016	1676	rundll32.exe	mssecsvc.exe
PID 1676 wrote to memory of 1016	1676	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c4cc252e2c08a9fe195af62e10cf6b6c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1892

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c4cc252e2c08a9fe195af62e10cf6b6c.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1676

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1016

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:436

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:1780

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
eeacfcd44b901fb11365399a37817a17

SHA1
1e2324111d13a103e93c2bda33df6297351c4585

SHA256
e69763c40019e3415b566d0a422b677db50c54cc69b5433b4947f16afa40b1b7

SHA512
1b576293c977bb9623ddfde2d575c5361981a8e63e4ced5de6b3ead3d4c1feb5108b62c05a8f7bbb5e0a4e85eafd30ed3d2cff70aff44e02d637597c3ee92569

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

MD5
eeacfcd44b901fb11365399a37817a17

SHA1
1e2324111d13a103e93c2bda33df6297351c4585

SHA256
e69763c40019e3415b566d0a422b677db50c54cc69b5433b4947f16afa40b1b7

SHA512
1b576293c977bb9623ddfde2d575c5361981a8e63e4ced5de6b3ead3d4c1feb5108b62c05a8f7bbb5e0a4e85eafd30ed3d2cff70aff44e02d637597c3ee92569

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

MD5
eeacfcd44b901fb11365399a37817a17

SHA1
1e2324111d13a103e93c2bda33df6297351c4585

SHA256
e69763c40019e3415b566d0a422b677db50c54cc69b5433b4947f16afa40b1b7

SHA512
1b576293c977bb9623ddfde2d575c5361981a8e63e4ced5de6b3ead3d4c1feb5108b62c05a8f7bbb5e0a4e85eafd30ed3d2cff70aff44e02d637597c3ee92569

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

MD5
8d58fa90971b38732aa2252201091cbe

SHA1
7a10a122abdc18a00d7e9a07cb343e7cddc2fac7

SHA256
29da4de4760e1726e19ecae33fe0b0b0f1a4fe7e7f2bb72b703ca35a73afa7ba

SHA512
48cd11b561b98315f435cf7bf39578afb9522799daa89e5bab30a7be7ee7039f91bb3dfb515f9655d947757ec247cdbe8f3bd8a4dd9f539a620a88d56fd1be7e

Download Submit
memory/1016-56-0x0000000000000000-mapping.dmp

Download
memory/1676-54-0x0000000000000000-mapping.dmp

Download
memory/1676-55-0x0000000076071000-0x0000000076073000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads