wannacry | 933d22e4dd68fe7cfa1d8a7afdd2f0a3aec97fbd0d09069a8667dc4f45c0c7eb

General

Target

52bd09bef51fdc8f27db1d866833f06e_JaffaCakes118.dll
Size

5.0MB
MD5

52bd09bef51fdc8f27db1d866833f06e
SHA1

2effa46e80d3a66a53a1a43f415c4383a2ead9c6
SHA256

933d22e4dd68fe7cfa1d8a7afdd2f0a3aec97fbd0d09069a8667dc4f45c0c7eb
SHA512

40fef4905591ccdd3db265671eb32d7eac3a2de03d0363b67cdd194db600965f091a46e7d8cd8c1519853aa58ca542761c4549e3cde257d77b9273bb6285f3b8
SSDEEP

98304:TDqPoBhC1aRxcSUDk36SAEdhvxWa9P593R8:TDqPT1Cxcxk3ZAEUadzR8

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3287) 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

1984 mssecsvc.exe
2540 mssecsvc.exe
2868 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
1984	mssecsvc.exe
2540	mssecsvc.exe
2868	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\ProxyEnable = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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\{9E57EC75-B56B-4995-B918-352C2AE90148}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-7a-5e-ac-ac-3b	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-7a-5e-ac-ac-3b\WpadDecisionTime = 601f7ed1cea8da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	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\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0087000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\WpadDecisionTime = 601f7ed1cea8da01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9E57EC75-B56B-4995-B918-352C2AE90148}\5a-7a-5e-ac-ac-3b	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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-7a-5e-ac-ac-3b\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-7a-5e-ac-ac-3b\WpadDecision = "0"	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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2732 wrote to memory of 2208	2732	rundll32.exe	rundll32.exe
PID 2732 wrote to memory of 2208	2732	rundll32.exe	rundll32.exe
PID 2732 wrote to memory of 2208	2732	rundll32.exe	rundll32.exe
PID 2732 wrote to memory of 2208	2732	rundll32.exe	rundll32.exe
PID 2732 wrote to memory of 2208	2732	rundll32.exe	rundll32.exe
PID 2732 wrote to memory of 2208	2732	rundll32.exe	rundll32.exe
PID 2732 wrote to memory of 2208	2732	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 1984	2208	rundll32.exe	mssecsvc.exe
PID 2208 wrote to memory of 1984	2208	rundll32.exe	mssecsvc.exe
PID 2208 wrote to memory of 1984	2208	rundll32.exe	mssecsvc.exe
PID 2208 wrote to memory of 1984	2208	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\52bd09bef51fdc8f27db1d866833f06e_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2732

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\52bd09bef51fdc8f27db1d866833f06e_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2208

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1984

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2868

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:2540

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
e24f99d2f3d5748da8746baa26293855

SHA1
9dc544c10d8539e6673718d9f28e7675334ec347

SHA256
933bd7af869d16469fac1f38a7ce1f89907d0a0af6eb92d18d89939a6858dd34

SHA512
0158fe45aad4fb521fd0c0fd3c03bacdd2c5ea66e9f4b5add529ced6e452c91e3b71296472a671ddd4ee7e4743b6499bb23eb1eb87b6a15008074f807f135fa1

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

MD5
f35530613a65e4b78fd49fdc9ae2a761

SHA1
c5171833f01470d7f01bda118eec6fd457545c0d

SHA256
aba53ea94812a018ac00e9664c57d32bbf25922bb08141694fb65f493611248b

SHA512
6d93a906f3de70ebef2b793954c2660f6c51f25a20f7b1c8da964240605e36e9861c822c9b6ee3a2f8e2e030991898b7d9ff8ee220b2f31ad3b8dba4be3e1d44

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads