wannacry | 0dbb6ab8482cc33b38f478bbc994e956f1e43b95c812a90532681d24867e8858

General

Target

468262ee24c581e76a63f3565e7941ff.dll
Size

5.0MB
MD5

468262ee24c581e76a63f3565e7941ff
SHA1

ff37c349ae69b075830696b51838b36d94ccc230
SHA256

0dbb6ab8482cc33b38f478bbc994e956f1e43b95c812a90532681d24867e8858
SHA512

d124f085f9efbf2db293cc4c6f348c348fba09d7b5e12abaf17a69a01a60f40265e90cfd52ce6cbabed76a02f0ff07ee77b7e8a814d0bdd9023f7f20aa96d37c

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1193) 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

1996 mssecsvr.exe
1216 mssecsvr.exe

pid	process
1996	mssecsvr.exe
1216	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 (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\WpadDecision = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-c7-1a-46-0c-c4\WpadDecisionTime = 70399154f59bd801	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\Content\CachePrefix	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-c7-1a-46-0c-c4	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\76-c7-1a-46-0c-c4	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-c7-1a-46-0c-c4\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-c7-1a-46-0c-c4\WpadDecision = "0"	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\ZoneMap\	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\Cookies\CachePrefix = "Cookie:"	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 = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\WpadDecisionTime = 70399154f59bd801	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\ZoneMap\AutoDetect = "1"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1744 wrote to memory of 900	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 900	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 900	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 900	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 900	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 900	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 900	1744	rundll32.exe	rundll32.exe
PID 900 wrote to memory of 1996	900	rundll32.exe	mssecsvr.exe
PID 900 wrote to memory of 1996	900	rundll32.exe	mssecsvr.exe
PID 900 wrote to memory of 1996	900	rundll32.exe	mssecsvr.exe
PID 900 wrote to memory of 1996	900	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\468262ee24c581e76a63f3565e7941ff.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\468262ee24c581e76a63f3565e7941ff.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:900

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1996

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:1216

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
96c540a9ea9346301380b2261eecdd37

SHA1
24f8d1ed3ffefc9be37853e8ab72fbfa5a59a4ef

SHA256
742d3ae3708c603b18a2a32bc3076a56d25ef559e453fd1a70df4acc1df905b4

SHA512
7613f8be72668b406a28081a77c168876c240d308119947f103865108255b182219799048809ee0a5be56bfa20278049814b48536c2614e2b1a42a6ad4420872

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

MD5
96c540a9ea9346301380b2261eecdd37

SHA1
24f8d1ed3ffefc9be37853e8ab72fbfa5a59a4ef

SHA256
742d3ae3708c603b18a2a32bc3076a56d25ef559e453fd1a70df4acc1df905b4

SHA512
7613f8be72668b406a28081a77c168876c240d308119947f103865108255b182219799048809ee0a5be56bfa20278049814b48536c2614e2b1a42a6ad4420872

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

MD5
96c540a9ea9346301380b2261eecdd37

SHA1
24f8d1ed3ffefc9be37853e8ab72fbfa5a59a4ef

SHA256
742d3ae3708c603b18a2a32bc3076a56d25ef559e453fd1a70df4acc1df905b4

SHA512
7613f8be72668b406a28081a77c168876c240d308119947f103865108255b182219799048809ee0a5be56bfa20278049814b48536c2614e2b1a42a6ad4420872

Download Submit
memory/900-54-0x0000000000000000-mapping.dmp

Download
memory/900-55-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download
memory/1996-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads