wannacry | 2c45e11f3ae6d3a9d81dbb079902ef99737b24b58d34d7c03a23ed8494c9f8a2

General

Target

7a0631216e7e0807a155539dc0bfd8b4.dll
Size

5.0MB
MD5

7a0631216e7e0807a155539dc0bfd8b4
SHA1

fca36ac2c4a36fffa978655d46337465cba30cb1
SHA256

2c45e11f3ae6d3a9d81dbb079902ef99737b24b58d34d7c03a23ed8494c9f8a2
SHA512

11261fdcb99e1809c341134129fbc80d5ffa68f0ea49c37ab11e4b36a96b7aed81881bb1ad063e3999020614aea270724940dafb7d4d545d10a367c7f15f7319

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1218) 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

1732 mssecsvc.exe
1560 mssecsvc.exe

pid	process
1732	mssecsvc.exe
1560	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\Wpad\{CD5ABDE6-A542-44FB-BBC4-452A0BE1EF0D}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CD5ABDE6-A542-44FB-BBC4-452A0BE1EF0D}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CD5ABDE6-A542-44FB-BBC4-452A0BE1EF0D}\56-d2-28-2d-c7-fb	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0105000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CD5ABDE6-A542-44FB-BBC4-452A0BE1EF0D}\WpadDecisionTime = 702e8d68d29bd801	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-d2-28-2d-c7-fb\WpadDecisionTime = 702e8d68d29bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	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\Content\CachePrefix	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CD5ABDE6-A542-44FB-BBC4-452A0BE1EF0D}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-d2-28-2d-c7-fb\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-d2-28-2d-c7-fb\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\ZoneMap\UNCAsIntranet = "0"	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	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CD5ABDE6-A542-44FB-BBC4-452A0BE1EF0D}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-d2-28-2d-c7-fb	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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1660 wrote to memory of 2040	1660	rundll32.exe	rundll32.exe
PID 1660 wrote to memory of 2040	1660	rundll32.exe	rundll32.exe
PID 1660 wrote to memory of 2040	1660	rundll32.exe	rundll32.exe
PID 1660 wrote to memory of 2040	1660	rundll32.exe	rundll32.exe
PID 1660 wrote to memory of 2040	1660	rundll32.exe	rundll32.exe
PID 1660 wrote to memory of 2040	1660	rundll32.exe	rundll32.exe
PID 1660 wrote to memory of 2040	1660	rundll32.exe	rundll32.exe
PID 2040 wrote to memory of 1732	2040	rundll32.exe	mssecsvc.exe
PID 2040 wrote to memory of 1732	2040	rundll32.exe	mssecsvc.exe
PID 2040 wrote to memory of 1732	2040	rundll32.exe	mssecsvc.exe
PID 2040 wrote to memory of 1732	2040	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a0631216e7e0807a155539dc0bfd8b4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a0631216e7e0807a155539dc0bfd8b4.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2040

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1732

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:1560

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

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
a01a2f7460e161baec47241b63a26d65

SHA1
e52305cf2fcb7750449f2c5fc29864b5e246df8b

SHA256
3d64941858b3b79aa9e79a2ebe69580498494f466ec58627701967c2c5c6065c

SHA512
47bcd553fb4f14abcc7d8f791fe5b633416387cb17739e9b5e2687ab45cd8a5023a97429478d37b768fe14977ccad4c02f03ec9a90fc2c8c7c200a29cfeb0386

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

MD5
a01a2f7460e161baec47241b63a26d65

SHA1
e52305cf2fcb7750449f2c5fc29864b5e246df8b

SHA256
3d64941858b3b79aa9e79a2ebe69580498494f466ec58627701967c2c5c6065c

SHA512
47bcd553fb4f14abcc7d8f791fe5b633416387cb17739e9b5e2687ab45cd8a5023a97429478d37b768fe14977ccad4c02f03ec9a90fc2c8c7c200a29cfeb0386

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

MD5
a01a2f7460e161baec47241b63a26d65

SHA1
e52305cf2fcb7750449f2c5fc29864b5e246df8b

SHA256
3d64941858b3b79aa9e79a2ebe69580498494f466ec58627701967c2c5c6065c

SHA512
47bcd553fb4f14abcc7d8f791fe5b633416387cb17739e9b5e2687ab45cd8a5023a97429478d37b768fe14977ccad4c02f03ec9a90fc2c8c7c200a29cfeb0386

Download Submit
memory/1732-56-0x0000000000000000-mapping.dmp

Download
memory/2040-54-0x0000000000000000-mapping.dmp

Download
memory/2040-55-0x0000000074F41000-0x0000000074F43000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads