wannacry | 99c7b66c0df1b9225da8e149c6557767f9afb7341ee89491638ecc9769555bd2

General

Target

8df901b394371435f697f65468303eb3.dll
Size

5.0MB
MD5

8df901b394371435f697f65468303eb3
SHA1

9b6db81939b0b43b202f31c1f56de72fbfb7fb11
SHA256

99c7b66c0df1b9225da8e149c6557767f9afb7341ee89491638ecc9769555bd2
SHA512

3a94a223fc316f56fbd9e3603fcaa300ca1a5ab22e2dd3132f1009cbdca96a5e72a93c1ed42ac5d4174a183102caee6eedb0cbd68bc469a851aa38e93cb2d539

Score

10^/10

wannacry ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1996 mssecsvc.exe
1216 mssecsvc.exe
1532 tasksche.exe

pid	process
1996	mssecsvc.exe
1216	mssecsvc.exe
1532	tasksche.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	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\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 (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-c7-1a-46-0c-c4\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-c7-1a-46-0c-c4	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\76-c7-1a-46-0c-c4	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-c7-1a-46-0c-c4\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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\{0916F404-CB4C-4236-B527-B9986B804060}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0916F404-CB4C-4236-B527-B9986B804060}\WpadDecisionTime = 10284c44f89bd801	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-c7-1a-46-0c-c4\WpadDecisionTime = 10284c44f89bd801	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1744 wrote to memory of 2008	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 2008	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 2008	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 2008	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 2008	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 2008	1744	rundll32.exe	rundll32.exe
PID 1744 wrote to memory of 2008	1744	rundll32.exe	rundll32.exe
PID 2008 wrote to memory of 1996	2008	rundll32.exe	mssecsvc.exe
PID 2008 wrote to memory of 1996	2008	rundll32.exe	mssecsvc.exe
PID 2008 wrote to memory of 1996	2008	rundll32.exe	mssecsvc.exe
PID 2008 wrote to memory of 1996	2008	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8df901b394371435f697f65468303eb3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8df901b394371435f697f65468303eb3.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2008

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

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1532

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:1216

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
6ed8f46cab5a3dfe36054fe65b30026e

SHA1
62620d4f3e08aeccd95878c683090e60b7a6a221

SHA256
ebb9a19d9b280d560a651a089cd7148559c3a72b301cb8036cc4ed22259c587d

SHA512
3d9d6e6585f859daf083cec0231955d4a04d185468f15336f39f958837a3f19c223f8d47405b72f4e0088ad9c7c053067a94b939a1635d8eb8d76015b5d3be05

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
6ed8f46cab5a3dfe36054fe65b30026e

SHA1
62620d4f3e08aeccd95878c683090e60b7a6a221

SHA256
ebb9a19d9b280d560a651a089cd7148559c3a72b301cb8036cc4ed22259c587d

SHA512
3d9d6e6585f859daf083cec0231955d4a04d185468f15336f39f958837a3f19c223f8d47405b72f4e0088ad9c7c053067a94b939a1635d8eb8d76015b5d3be05

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
65f2298f3612c8ddf837b938c942cd7b

SHA1
fdf7a4694f5912630e6c24fd449870fa37fce3f9

SHA256
5c9e2b6c604f4a43845a261e6385866e20a3aaa7f59f595537e17812f33ed5db

SHA512
b313685298ddd7aea0abb5cc5212466464c3677781c65c66201851d760c247f8c36145a3f6cb35344d086b7bbeb86186dd39ea5c8a4216adcab1e86ada169d75

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

Download
memory/2008-54-0x0000000000000000-mapping.dmp

Download
memory/2008-55-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads