wannacry | 2105a603cde9895fbd0f4161a037dc0202f401e3a37ecc248e9adeea4157cfc7

General

Target

5b854915957fef1940e0b69b6790ddf4.dll
Size

5.0MB
MD5

5b854915957fef1940e0b69b6790ddf4
SHA1

708d87a0cb3d0c4d74cbfb0c2f8e4f52988e09af
SHA256

2105a603cde9895fbd0f4161a037dc0202f401e3a37ecc248e9adeea4157cfc7
SHA512

f7e0d1e2c48781d17830a3ca6c13d1ffbc0fac53d0c638815fd0065ad8117cd22f19672a709dfdc540557e11a87e6f63968c521d7560bdceab100f4097ac63bf

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1257) 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

1552 mssecsvc.exe
1704 mssecsvc.exe

pid	process
1552	mssecsvc.exe
1704	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FEE85162-85AC-4B46-A77A-01ECC46E6CB9}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FEE85162-85AC-4B46-A77A-01ECC46E6CB9}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FEE85162-85AC-4B46-A77A-01ECC46E6CB9}\32-87-5f-bb-4b-d7	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FEE85162-85AC-4B46-A77A-01ECC46E6CB9}\WpadNetworkName = "Network 2"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-87-5f-bb-4b-d7	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-87-5f-bb-4b-d7\WpadDecisionTime = 00dc6936db9bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-87-5f-bb-4b-d7\WpadDecision = "0"	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\{FEE85162-85AC-4B46-A77A-01ECC46E6CB9}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FEE85162-85AC-4B46-A77A-01ECC46E6CB9}\WpadDecisionTime = 00dc6936db9bd801	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
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\Wpad\32-87-5f-bb-4b-d7\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1348 wrote to memory of 904	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 904	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 904	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 904	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 904	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 904	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 904	1348	rundll32.exe	rundll32.exe
PID 904 wrote to memory of 1552	904	rundll32.exe	mssecsvc.exe
PID 904 wrote to memory of 1552	904	rundll32.exe	mssecsvc.exe
PID 904 wrote to memory of 1552	904	rundll32.exe	mssecsvc.exe
PID 904 wrote to memory of 1552	904	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5b854915957fef1940e0b69b6790ddf4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1348

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5b854915957fef1940e0b69b6790ddf4.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:904

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1552

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:1704

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

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
27d9ced76606122077c847a395640155

SHA1
6a19763fa969edf9a35c2252b744c01722df960b

SHA256
2b102944ee2eb37ee5eee121552b1401b948798ac37adc1fbafb60a00f509cf1

SHA512
934154695063278a8fdf8485cbfbffef192c5ec8db7a059ebed585c92973400926b4a5cfddca210cb135f7147374deb148938a8b6501ecd0d38b7cdd8867e447

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

MD5
27d9ced76606122077c847a395640155

SHA1
6a19763fa969edf9a35c2252b744c01722df960b

SHA256
2b102944ee2eb37ee5eee121552b1401b948798ac37adc1fbafb60a00f509cf1

SHA512
934154695063278a8fdf8485cbfbffef192c5ec8db7a059ebed585c92973400926b4a5cfddca210cb135f7147374deb148938a8b6501ecd0d38b7cdd8867e447

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

MD5
27d9ced76606122077c847a395640155

SHA1
6a19763fa969edf9a35c2252b744c01722df960b

SHA256
2b102944ee2eb37ee5eee121552b1401b948798ac37adc1fbafb60a00f509cf1

SHA512
934154695063278a8fdf8485cbfbffef192c5ec8db7a059ebed585c92973400926b4a5cfddca210cb135f7147374deb148938a8b6501ecd0d38b7cdd8867e447

Download Submit
memory/904-54-0x0000000000000000-mapping.dmp

Download
memory/904-55-0x00000000766A1000-0x00000000766A3000-memory.dmp

Filesize
8KB

Download
memory/1552-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads