wannacry | 731f785e4a1c642ff05b066ce96d1014eb83f6132a3bc20cae49fda009eb5129

General

Target

13a24eec00acccae3b1ed068c0748cee.dll
Size

5.0MB
MD5

13a24eec00acccae3b1ed068c0748cee
SHA1

2b8aa6d16a9dab28c936444d48c093c765f021e2
SHA256

731f785e4a1c642ff05b066ce96d1014eb83f6132a3bc20cae49fda009eb5129
SHA512

009290ff3292a3cb672b2cf567ae21522afb27b4787f1c93c07909c371df68a497808101c12d6c7a7fb6a911166ca1558cc8397558ab926906e9770e3fe4ea08

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1250) 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

1808 mssecsvr.exe
1164 mssecsvr.exe

pid	process
1808	mssecsvr.exe
1164	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:

mssecsvr.exerundll32.exe

description ioc process

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

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

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvr.exe

description	ioc	process
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\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\WpadNetworkName = "Network 3"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4f-74-58-7d-c3\WpadDecisionTime = 80c34b63d39bd801	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\Wpad	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0103000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4f-74-58-7d-c3	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\WpadDecisionTime = 80c34b63d39bd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\WpadDecision = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\AutoDetect = "1"	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\96-4f-74-58-7d-c3	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4f-74-58-7d-c3\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4f-74-58-7d-c3\WpadDecision = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2012 wrote to memory of 620	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 620	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 620	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 620	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 620	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 620	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 620	2012	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 1808	620	rundll32.exe	mssecsvr.exe
PID 620 wrote to memory of 1808	620	rundll32.exe	mssecsvr.exe
PID 620 wrote to memory of 1808	620	rundll32.exe	mssecsvr.exe
PID 620 wrote to memory of 1808	620	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\13a24eec00acccae3b1ed068c0748cee.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2012

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\13a24eec00acccae3b1ed068c0748cee.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:620

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1808

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:1164

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
f5db91d79dddd348bbab0e32cb1f03de

SHA1
221c283d5a71b0a77993213bd58aaffd8315efb8

SHA256
2783247095a85fc23531a81c9af47343281fcd92ad4e3cd46840ae570a60df36

SHA512
d0fb8388a90dbbbd1f76185891d732c2db0168375863dcf80ff75442f23710d3b5c70919eb4f46a36ff4e687df2118c40464b4991d514f63be67ffe1f88087a7

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

MD5
f5db91d79dddd348bbab0e32cb1f03de

SHA1
221c283d5a71b0a77993213bd58aaffd8315efb8

SHA256
2783247095a85fc23531a81c9af47343281fcd92ad4e3cd46840ae570a60df36

SHA512
d0fb8388a90dbbbd1f76185891d732c2db0168375863dcf80ff75442f23710d3b5c70919eb4f46a36ff4e687df2118c40464b4991d514f63be67ffe1f88087a7

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

MD5
f5db91d79dddd348bbab0e32cb1f03de

SHA1
221c283d5a71b0a77993213bd58aaffd8315efb8

SHA256
2783247095a85fc23531a81c9af47343281fcd92ad4e3cd46840ae570a60df36

SHA512
d0fb8388a90dbbbd1f76185891d732c2db0168375863dcf80ff75442f23710d3b5c70919eb4f46a36ff4e687df2118c40464b4991d514f63be67ffe1f88087a7

Download Submit
memory/620-54-0x0000000000000000-mapping.dmp

Download
memory/620-55-0x0000000075791000-0x0000000075793000-memory.dmp

Filesize
8KB

Download
memory/1808-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads