wannacry | 1adc42b3e4869bd7125e52aae5f570ae34aaeebb053ee1faf55c9aeb657943da

General

Target

ab80bc09ea8609ec530cbde89ec7d29c_JaffaCakes118.dll
Size

5.0MB
MD5

ab80bc09ea8609ec530cbde89ec7d29c
SHA1

e54b1408d76c1a234c3a4816de52f35370e38557
SHA256

1adc42b3e4869bd7125e52aae5f570ae34aaeebb053ee1faf55c9aeb657943da
SHA512

74cd7eb0f39243641eb67ae8fec5b1678b5ca712787346c69ce14add8f4d0a87c4d6e499ed8d14282d7d72cb8471b1b90fb9509d6050c695c972c24518842156
SSDEEP

98304:+DqPoBhz1aRxcSUDkS6SAEdhvxWa9P5931Vp2X3:+DqPe1CxcxkSZAEUadzD4X

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3180) 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

2140 mssecsvc.exe
2624 mssecsvc.exe
2504 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
2140	mssecsvc.exe
2624	mssecsvc.exe
2504	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{355B5DC4-8A01-4DEB-80FD-F65FDDBE239D}\WpadDecisionTime = 60a7d6fa9fbeda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-47-e2-10-05-74\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{355B5DC4-8A01-4DEB-80FD-F65FDDBE239D}\1a-47-e2-10-05-74	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{355B5DC4-8A01-4DEB-80FD-F65FDDBE239D}	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	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{355B5DC4-8A01-4DEB-80FD-F65FDDBE239D}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-47-e2-10-05-74	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-47-e2-10-05-74\WpadDecisionTime = 60a7d6fa9fbeda01	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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{355B5DC4-8A01-4DEB-80FD-F65FDDBE239D}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{355B5DC4-8A01-4DEB-80FD-F65FDDBE239D}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-47-e2-10-05-74\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2580 wrote to memory of 2100	2580	rundll32.exe	rundll32.exe
PID 2580 wrote to memory of 2100	2580	rundll32.exe	rundll32.exe
PID 2580 wrote to memory of 2100	2580	rundll32.exe	rundll32.exe
PID 2580 wrote to memory of 2100	2580	rundll32.exe	rundll32.exe
PID 2580 wrote to memory of 2100	2580	rundll32.exe	rundll32.exe
PID 2580 wrote to memory of 2100	2580	rundll32.exe	rundll32.exe
PID 2580 wrote to memory of 2100	2580	rundll32.exe	rundll32.exe
PID 2100 wrote to memory of 2140	2100	rundll32.exe	mssecsvc.exe
PID 2100 wrote to memory of 2140	2100	rundll32.exe	mssecsvc.exe
PID 2100 wrote to memory of 2140	2100	rundll32.exe	mssecsvc.exe
PID 2100 wrote to memory of 2140	2100	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab80bc09ea8609ec530cbde89ec7d29c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2580

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab80bc09ea8609ec530cbde89ec7d29c_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2100

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2140

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2504

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:2624

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
6e857c346a88919885c2367388fb2679

SHA1
1f5b50bee927e494bdb05f3124507cccca79e303

SHA256
66f59db3bdf0b7f1e2cad74295c1e92d99b835e5d861216e627ef6d93e97970e

SHA512
4594963d06a0c0317dee821344d7b28873c2db25769011e306df046955f5f6e1191cec18fb6187cd71ac9d0d4b862a9e41df0c19e405b18461238a3b5615b55b

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
5853b99636d6ce48af34af781d6be42d

SHA1
d80cd9ead851c85324ca9bc4e36d4e3d712c22e3

SHA256
76e85f8521adf3cc03420d65b0c2b170f40bb7fbb2fe7c2e723100b37e2c3370

SHA512
d041b87adc8ecdcdd4e9aea22f470d933fa5448d6fde461d6f072f17e4f97dfb97ea563bc9e70fe480480b285a0c9a33ca843574df5c0d2957201c8af16f741b

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads