wannacry | b7c7599d6304eaeb6a334de838938a36e4e306c0fd2562c64c9f9548a5c57c7c

General

Target

0f31bd63c85f42b46f8b5c07f02147b0_JaffaCakes118.dll
Size

5.0MB
MD5

0f31bd63c85f42b46f8b5c07f02147b0
SHA1

7e7d97b8aa93efeddce129b890ec1ca14eb88c02
SHA256

b7c7599d6304eaeb6a334de838938a36e4e306c0fd2562c64c9f9548a5c57c7c
SHA512

ea7abcf150c572a3e0a0e45b731556e9875c68e8ea9fadd3ae49fcde221a45503516c6ae414ac5fb4a4e8c69ef4b6cee74be698d29f3821c264442dcaf3bfe76
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef09G/D8kIqRYoAdNLKz6626M+vbOSSqTPVXmiHkQgz:SnAQqMSPbcBVU/1INRx+TSqTdX1HkQ

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3275) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2680 mssecsvc.exe
2688 mssecsvc.exe
2632 tasksche.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

pid	process
2680	mssecsvc.exe
2688	mssecsvc.exe
2632	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
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 (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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDB8CC54-5585-4BD8-B797-FD0EDB683D86}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDB8CC54-5585-4BD8-B797-FD0EDB683D86}\5e-5f-bb-a7-bd-40	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDB8CC54-5585-4BD8-B797-FD0EDB683D86}\WpadDecisionTime = 30486279ec9cda01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDB8CC54-5585-4BD8-B797-FD0EDB683D86}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-5f-bb-a7-bd-40\WpadDecision = "0"	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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-5f-bb-a7-bd-40	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-5f-bb-a7-bd-40\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-5f-bb-a7-bd-40\WpadDecisionTime = 30486279ec9cda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDB8CC54-5585-4BD8-B797-FD0EDB683D86}\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\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDB8CC54-5585-4BD8-B797-FD0EDB683D86}\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1968 wrote to memory of 1636	1968	rundll32.exe	rundll32.exe
PID 1968 wrote to memory of 1636	1968	rundll32.exe	rundll32.exe
PID 1968 wrote to memory of 1636	1968	rundll32.exe	rundll32.exe
PID 1968 wrote to memory of 1636	1968	rundll32.exe	rundll32.exe
PID 1968 wrote to memory of 1636	1968	rundll32.exe	rundll32.exe
PID 1968 wrote to memory of 1636	1968	rundll32.exe	rundll32.exe
PID 1968 wrote to memory of 1636	1968	rundll32.exe	rundll32.exe
PID 1636 wrote to memory of 2680	1636	rundll32.exe	mssecsvc.exe
PID 1636 wrote to memory of 2680	1636	rundll32.exe	mssecsvc.exe
PID 1636 wrote to memory of 2680	1636	rundll32.exe	mssecsvc.exe
PID 1636 wrote to memory of 2680	1636	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f31bd63c85f42b46f8b5c07f02147b0_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f31bd63c85f42b46f8b5c07f02147b0_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1636

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2680

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2632

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:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
8ea49a89d13b3382364cce359e44ac57

SHA1
6b79006e42806135603a7cb14b962ceaae2990ae

SHA256
ae9dbdddfaca00ecacd763f9ecd891d7d54d2ddabb47f96eb1428621dfe1221c

SHA512
ed7d43cbae9c5e29dedab993bff0321bc1bb1589dbd8b3574824ab250ce658a24f8ed32c9db91a97ce420b86001b14d3237f78411d337390a283c3a435fba184

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
022dd9f14f6bc11a6908e0fc5f69b04c

SHA1
e3e5929ea51b65a399107e0112aea04e99a46bc4

SHA256
d74ed543d3d9ad16a9a004b66419922eb76d71fc8b6938cfaf362a8e669f9e1d

SHA512
e73ab5ab989af7f776adb1a6add787e2ebacfee724d5b45a7a1eaa64c2f0cde262226b1c9aefacde8698a5f5ac24db4a7d345e97cc4f560cd2575eeb67fe393c

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads