wannacry | 50ce21338b3fc1588a96cedc45b27f9019cdfef4348f808ac7bda1d555783a5d

General

Target

1d6d94d464f5c412a46cc627d0b6e460.dll
Size

5.0MB
MD5

1d6d94d464f5c412a46cc627d0b6e460
SHA1

c6eb8e052cbd38a14b205ef027c06bb4a66680b4
SHA256

50ce21338b3fc1588a96cedc45b27f9019cdfef4348f808ac7bda1d555783a5d
SHA512

441ef97b91f74c3fb35e36a836e57893390f3768d9089c763b4175fa2f728596fa37353023c47a96bb286e39d88a0014849534b5e1d93c33605ea45c80aa2826

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1246) 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:

mssecsvr.exemssecsvr.exe

pid process

1680 mssecsvr.exe
1320 mssecsvr.exe

pid	process
1680	mssecsvr.exe
1320	mssecsvr.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvr.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvr.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

File created C:\WINDOWS\mssecsvr.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvr.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{79924454-FFA8-40FA-B2E0-E50B81BFF94E}\WpadDecision = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{79924454-FFA8-40FA-B2E0-E50B81BFF94E}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{79924454-FFA8-40FA-B2E0-E50B81BFF94E}\12-63-50-77-49-84	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{79924454-FFA8-40FA-B2E0-E50B81BFF94E}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{79924454-FFA8-40FA-B2E0-E50B81BFF94E}\WpadDecisionTime = e0b597a8e09bd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-63-50-77-49-84\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{79924454-FFA8-40FA-B2E0-E50B81BFF94E}	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-63-50-77-49-84	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-63-50-77-49-84\WpadDecisionTime = e0b597a8e09bd801	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-63-50-77-49-84\WpadDecision = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1976 wrote to memory of 888	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 888	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 888	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 888	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 888	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 888	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 888	1976	rundll32.exe	rundll32.exe
PID 888 wrote to memory of 1680	888	rundll32.exe	mssecsvr.exe
PID 888 wrote to memory of 1680	888	rundll32.exe	mssecsvr.exe
PID 888 wrote to memory of 1680	888	rundll32.exe	mssecsvr.exe
PID 888 wrote to memory of 1680	888	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1d6d94d464f5c412a46cc627d0b6e460.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1976

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1d6d94d464f5c412a46cc627d0b6e460.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:888

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1680

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1320

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

Loading Replay Monitor...

Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
4291e4b98cb467e9515b55fcae20f939

SHA1
99e179a5ded29b5ea6e8874c36c9c66131d347bc

SHA256
0929d063bd600a32c876ed136ad58d93bf4fe665f497457bbf7472c62dc8b539

SHA512
f9173584f45ddeefa0ab80d2e743eb8ddff1ddd4ccb05937a02b2adb8324f4f39b9185acc93b4b15042efce2ebe3e413b347368f5a1085432b57b05ffb30b90b

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
4291e4b98cb467e9515b55fcae20f939

SHA1
99e179a5ded29b5ea6e8874c36c9c66131d347bc

SHA256
0929d063bd600a32c876ed136ad58d93bf4fe665f497457bbf7472c62dc8b539

SHA512
f9173584f45ddeefa0ab80d2e743eb8ddff1ddd4ccb05937a02b2adb8324f4f39b9185acc93b4b15042efce2ebe3e413b347368f5a1085432b57b05ffb30b90b

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
4291e4b98cb467e9515b55fcae20f939

SHA1
99e179a5ded29b5ea6e8874c36c9c66131d347bc

SHA256
0929d063bd600a32c876ed136ad58d93bf4fe665f497457bbf7472c62dc8b539

SHA512
f9173584f45ddeefa0ab80d2e743eb8ddff1ddd4ccb05937a02b2adb8324f4f39b9185acc93b4b15042efce2ebe3e413b347368f5a1085432b57b05ffb30b90b

Download Submit
memory/888-54-0x0000000000000000-mapping.dmp

Download
memory/888-55-0x0000000075A61000-0x0000000075A63000-memory.dmp

Filesize
8KB

Download
memory/1680-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads