wannacry | cff37b00a90722f2fdedc72e23026cd26f4eb9b020976195db481e9d7fe0e11c

General

Target

41b7ce4931c04d964a28f41e80920cde.dll
Size

5.0MB
MD5

41b7ce4931c04d964a28f41e80920cde
SHA1

2f00e3270fbcddfcb875a3ac571b00edc60ebe9d
SHA256

cff37b00a90722f2fdedc72e23026cd26f4eb9b020976195db481e9d7fe0e11c
SHA512

fc3586e89f227148a0eafebb76b44ffc61dc24aa0a4ce5cfe863c4b16340a7f900eaac7286ffeff242ba26584a8f219f01f3d9a48dcfd3eaa0e42d4c87b4a037

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1213) 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

1928 mssecsvc.exe
1328 mssecsvc.exe

pid	process
1928	mssecsvc.exe
1328	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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadNetworkName = "Network 3"	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\ProxyEnable = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	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\{DDD376C1-A934-4862-A477-420673A0EB55}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\WpadDecisionTime = 90c9cceae19bd801	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\4a-be-6e-b9-73-90	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecisionTime = 90c9cceae19bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\WpadDecisionReason = "1"	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\ZoneMap\	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\4a-be-6e-b9-73-90	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1820 wrote to memory of 880	1820	rundll32.exe	rundll32.exe
PID 1820 wrote to memory of 880	1820	rundll32.exe	rundll32.exe
PID 1820 wrote to memory of 880	1820	rundll32.exe	rundll32.exe
PID 1820 wrote to memory of 880	1820	rundll32.exe	rundll32.exe
PID 1820 wrote to memory of 880	1820	rundll32.exe	rundll32.exe
PID 1820 wrote to memory of 880	1820	rundll32.exe	rundll32.exe
PID 1820 wrote to memory of 880	1820	rundll32.exe	rundll32.exe
PID 880 wrote to memory of 1928	880	rundll32.exe	mssecsvc.exe
PID 880 wrote to memory of 1928	880	rundll32.exe	mssecsvc.exe
PID 880 wrote to memory of 1928	880	rundll32.exe	mssecsvc.exe
PID 880 wrote to memory of 1928	880	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\41b7ce4931c04d964a28f41e80920cde.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1820

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\41b7ce4931c04d964a28f41e80920cde.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:880

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1928

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:1328

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
a87c7f2e97a4a589e0e2c7add3abd601

SHA1
c364d17fc78edd5ee9d2f1904439c1db80b1142e

SHA256
d7a01de6bf8fcf5645cf880ef3581310ded93b91b6d4928931429e03327a784c

SHA512
19561f1f006dd7c8cba20276b95163515595f012a02b7f8b4cfa5a3c79ec27fad100a14253af450939a545d8708b7ce03b80fbb083b709f81c9001a2aef5ea0f

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

MD5
a87c7f2e97a4a589e0e2c7add3abd601

SHA1
c364d17fc78edd5ee9d2f1904439c1db80b1142e

SHA256
d7a01de6bf8fcf5645cf880ef3581310ded93b91b6d4928931429e03327a784c

SHA512
19561f1f006dd7c8cba20276b95163515595f012a02b7f8b4cfa5a3c79ec27fad100a14253af450939a545d8708b7ce03b80fbb083b709f81c9001a2aef5ea0f

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

MD5
a87c7f2e97a4a589e0e2c7add3abd601

SHA1
c364d17fc78edd5ee9d2f1904439c1db80b1142e

SHA256
d7a01de6bf8fcf5645cf880ef3581310ded93b91b6d4928931429e03327a784c

SHA512
19561f1f006dd7c8cba20276b95163515595f012a02b7f8b4cfa5a3c79ec27fad100a14253af450939a545d8708b7ce03b80fbb083b709f81c9001a2aef5ea0f

Download Submit
memory/880-54-0x0000000000000000-mapping.dmp

Download
memory/880-55-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download
memory/1328-62-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/1328-65-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/1928-56-0x0000000000000000-mapping.dmp

Download
memory/1928-59-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/1928-64-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads