wannacry | 320e16527e1f75a55984e61fcee900fc070a12ae85b5a163bc00cda76b6b9ce6

General

Target

881e9916951118c60daeeec26aed4a53.dll
Size

5.0MB
MD5

881e9916951118c60daeeec26aed4a53
SHA1

65b6245adf5fb8f59151e3e29e7485fc92d8d252
SHA256

320e16527e1f75a55984e61fcee900fc070a12ae85b5a163bc00cda76b6b9ce6
SHA512

bc51b4594a4b7d504cd3fe4a3baca278edf3342ba79dfd461112dc219fb6fe356b356231d88f521834a359d72e90dff531f0b8d1a3a963ed110af37818a3b02b

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (955) 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

2028 mssecsvc.exe
1404 mssecsvc.exe
800 tasksche.exe

pid	process
2028	mssecsvc.exe
1404	mssecsvc.exe
800	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	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\4a-bc-40-ce-d2-8e	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-bc-40-ce-d2-8e\WpadDecision = "0"	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 (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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\WpadDecisionTime = f0d57d38f49bd801	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}	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\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-bc-40-ce-d2-8e	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-bc-40-ce-d2-8e\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-bc-40-ce-d2-8e\WpadDecisionTime = f0d57d38f49bd801	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 2028	2024	rundll32.exe	mssecsvc.exe
PID 2024 wrote to memory of 2028	2024	rundll32.exe	mssecsvc.exe
PID 2024 wrote to memory of 2028	2024	rundll32.exe	mssecsvc.exe
PID 2024 wrote to memory of 2028	2024	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\881e9916951118c60daeeec26aed4a53.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\881e9916951118c60daeeec26aed4a53.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2024

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2028

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:800

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:1404

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
e0afec59159536ea29c1b33c7cf5ab13

SHA1
8f72c18f360b45f426aef3360aa4ce00d78e60f0

SHA256
26cc8ccd880ab77cec78dbbd147c925bb4ae91b478953b12d821c63e4b613179

SHA512
2532443a65ad2dcf8cad2f3777e50a01c09be7244932dcd22d7b5426d663c6ac4d09d6b82bca17d57da08f6fc70f8d37fa9f71290552f7ba469dd2da801fe412

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
e0afec59159536ea29c1b33c7cf5ab13

SHA1
8f72c18f360b45f426aef3360aa4ce00d78e60f0

SHA256
26cc8ccd880ab77cec78dbbd147c925bb4ae91b478953b12d821c63e4b613179

SHA512
2532443a65ad2dcf8cad2f3777e50a01c09be7244932dcd22d7b5426d663c6ac4d09d6b82bca17d57da08f6fc70f8d37fa9f71290552f7ba469dd2da801fe412

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
e0afec59159536ea29c1b33c7cf5ab13

SHA1
8f72c18f360b45f426aef3360aa4ce00d78e60f0

SHA256
26cc8ccd880ab77cec78dbbd147c925bb4ae91b478953b12d821c63e4b613179

SHA512
2532443a65ad2dcf8cad2f3777e50a01c09be7244932dcd22d7b5426d663c6ac4d09d6b82bca17d57da08f6fc70f8d37fa9f71290552f7ba469dd2da801fe412

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
e097f84fa7676b5387336354f3e3341c

SHA1
0102f4a126889a305d2421f9beb2e2205b0a8651

SHA256
92a99121c40a2553a8d454424eecc326936911fb697194a8f84a9020a4bf5066

SHA512
4a12420bd7d4935f5e7dfc52a914bb0cba8a88c906f0e77fd00d4d04d336b4d9d6ab4ea0325c8760411afb63a54dcb8b115c28b42e6470908c56025c2b8abe84

Download Submit
memory/2024-54-0x0000000000000000-mapping.dmp

Download
memory/2024-55-0x0000000075731000-0x0000000075733000-memory.dmp

Filesize
8KB

Download
memory/2028-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads