wannacry | a54dc9d2c7a0395fffce3e9385196abf4ff0694a8e22eb3e81f4656e8b4f91b5

General

Target

2a45a7ed67aab07387c67c30b04396c5.dll
Size

5.0MB
MD5

2a45a7ed67aab07387c67c30b04396c5
SHA1

99e879f8aa85ca4d1647ee14db1988d1fb026b76
SHA256

a54dc9d2c7a0395fffce3e9385196abf4ff0694a8e22eb3e81f4656e8b4f91b5
SHA512

6fbc2a1f071d6db7119673cbeb005fc7b265f20d90f554c02a8c79c7d6f172d6fbc0ab223168cca0f56bee58ca2216917717e9c6b2fa5af3abe2be9fdefee3bf

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1260) 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

1612 mssecsvr.exe
952 mssecsvr.exe

pid	process
1612	mssecsvr.exe
952	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00bc000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9C9B3BD9-4108-4BD3-B421-B3958D336EFE}\WpadDecision = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9C9B3BD9-4108-4BD3-B421-B3958D336EFE}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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 (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\{9C9B3BD9-4108-4BD3-B421-B3958D336EFE}	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\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-ad-7b-a7-b2-4b	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9C9B3BD9-4108-4BD3-B421-B3958D336EFE}\ea-ad-7b-a7-b2-4b	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-ad-7b-a7-b2-4b\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-ad-7b-a7-b2-4b\WpadDecisionTime = d0f00677f59bd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-ad-7b-a7-b2-4b\WpadDecision = "0"	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\ProxyEnable = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9C9B3BD9-4108-4BD3-B421-B3958D336EFE}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9C9B3BD9-4108-4BD3-B421-B3958D336EFE}\WpadDecisionTime = d0f00677f59bd801	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1096 wrote to memory of 1412	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 1412	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 1412	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 1412	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 1412	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 1412	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 1412	1096	rundll32.exe	rundll32.exe
PID 1412 wrote to memory of 1612	1412	rundll32.exe	mssecsvr.exe
PID 1412 wrote to memory of 1612	1412	rundll32.exe	mssecsvr.exe
PID 1412 wrote to memory of 1612	1412	rundll32.exe	mssecsvr.exe
PID 1412 wrote to memory of 1612	1412	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2a45a7ed67aab07387c67c30b04396c5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1096

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2a45a7ed67aab07387c67c30b04396c5.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1412

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1612

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:952

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\mssecsvr.exe

Filesize
2.2MB

MD5
526350c48e2311699f793fa3cc5a8f6e

SHA1
def340951878144f4e6fd78aa809303a1f5cec85

SHA256
e43fab0d4d134237930888e13fcb91e28fb7236a7f7db4d9b29531c3fe1004dd

SHA512
d2db85073e72f7fd4bb4811c135861733d0b5d0a8a7a1647803443284d3d12b4bdb1d8c0d1cb6b015ff4370f4d7f03aadc83d15359540b34eeeb411a4a612287

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
526350c48e2311699f793fa3cc5a8f6e

SHA1
def340951878144f4e6fd78aa809303a1f5cec85

SHA256
e43fab0d4d134237930888e13fcb91e28fb7236a7f7db4d9b29531c3fe1004dd

SHA512
d2db85073e72f7fd4bb4811c135861733d0b5d0a8a7a1647803443284d3d12b4bdb1d8c0d1cb6b015ff4370f4d7f03aadc83d15359540b34eeeb411a4a612287

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
526350c48e2311699f793fa3cc5a8f6e

SHA1
def340951878144f4e6fd78aa809303a1f5cec85

SHA256
e43fab0d4d134237930888e13fcb91e28fb7236a7f7db4d9b29531c3fe1004dd

SHA512
d2db85073e72f7fd4bb4811c135861733d0b5d0a8a7a1647803443284d3d12b4bdb1d8c0d1cb6b015ff4370f4d7f03aadc83d15359540b34eeeb411a4a612287

Download Submit
memory/1412-54-0x0000000000000000-mapping.dmp

Download
memory/1412-55-0x0000000076291000-0x0000000076293000-memory.dmp

Filesize
8KB

Download
memory/1612-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads