wannacry | 60816bcab52669039f9f35dfefaf114279832402aa81f481df7b203ac989c081

General

Target

0fadb975887f58eb432387e86f0465b2_JaffaCakes118.dll
Size

5.0MB
MD5

0fadb975887f58eb432387e86f0465b2
SHA1

fbf5d8d2759305b15891657f6b60fd53b2d09d34
SHA256

60816bcab52669039f9f35dfefaf114279832402aa81f481df7b203ac989c081
SHA512

e710407fbaf5c43236113d6a764d783204c58bac764cf2b6e9b90045d23ff077b258fadbb37fec5aa040aeaa5a3ef4d17d69fe1be2c78355d10e8154652b1b64
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P59UcryAVkE:+DqPe1Cxcxk3ZAEUad7yck

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3348) 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

2044 mssecsvc.exe
2360 mssecsvc.exe
2964 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
2044	mssecsvc.exe
2360	mssecsvc.exe
2964	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 (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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ca000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{61FEF2CF-EC11-42B0-A4D0-54A158FEB0C5}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\62-4c-b8-61-3c-b7\WpadDecisionTime = 802abbf9129dda01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\ZoneMap\	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\Wpad\{61FEF2CF-EC11-42B0-A4D0-54A158FEB0C5}\WpadDecisionTime = 802abbf9129dda01	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\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{61FEF2CF-EC11-42B0-A4D0-54A158FEB0C5}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{61FEF2CF-EC11-42B0-A4D0-54A158FEB0C5}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{61FEF2CF-EC11-42B0-A4D0-54A158FEB0C5}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{61FEF2CF-EC11-42B0-A4D0-54A158FEB0C5}\62-4c-b8-61-3c-b7	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\62-4c-b8-61-3c-b7\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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\62-4c-b8-61-3c-b7\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\62-4c-b8-61-3c-b7	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\Connections	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2204 wrote to memory of 2424	2204	rundll32.exe	rundll32.exe
PID 2204 wrote to memory of 2424	2204	rundll32.exe	rundll32.exe
PID 2204 wrote to memory of 2424	2204	rundll32.exe	rundll32.exe
PID 2204 wrote to memory of 2424	2204	rundll32.exe	rundll32.exe
PID 2204 wrote to memory of 2424	2204	rundll32.exe	rundll32.exe
PID 2204 wrote to memory of 2424	2204	rundll32.exe	rundll32.exe
PID 2204 wrote to memory of 2424	2204	rundll32.exe	rundll32.exe
PID 2424 wrote to memory of 2044	2424	rundll32.exe	mssecsvc.exe
PID 2424 wrote to memory of 2044	2424	rundll32.exe	mssecsvc.exe
PID 2424 wrote to memory of 2044	2424	rundll32.exe	mssecsvc.exe
PID 2424 wrote to memory of 2044	2424	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0fadb975887f58eb432387e86f0465b2_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2204

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0fadb975887f58eb432387e86f0465b2_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2424

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2044

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2964

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:2360

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
07c498015f8a58ae9fd908f0e2978ae6

SHA1
d6de1f561d588b030af47809e68fb5ed94abc3e2

SHA256
e609de4cdb55b4d289a466474d0eea0bd03ddbf0b36d81276c41c3221df7aaa6

SHA512
a5c5b501c09942a0dc4bbf03d3b3367a11fbb6d45e8b10e866783431a3e9fa4918481b5d983e03f2c154e2a3dfc70e348a3e4569f357611c857c81d6ed326930

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

MD5
ea86acbf644340f8f693b7303892e167

SHA1
2805dc547a9452f0811f7d76bd2b9b7f451368ca

SHA256
ece0fea375cbc8e065b12bedd8e17b04c91955037825b483e24b94cbc1ffd465

SHA512
6c6fbfdb4fc234031e9088e28a50e29971b85a68d852f9312ca0b792b700610290cbf887d2d717be5c689898d100e689cbabb3ae486abea6a8bdd688a8a27bf7

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads