wannacry | 291e79ceced63d7f5261e133ae6f8956db51acaba0406c47979684595170c55a

General

Target

62a0aaca659062139dec2f9742995d8f_JaffaCakes118.dll
Size

5.0MB
MD5

62a0aaca659062139dec2f9742995d8f
SHA1

b8851c3d99ccc12dac0e106dec265db324c3f141
SHA256

291e79ceced63d7f5261e133ae6f8956db51acaba0406c47979684595170c55a
SHA512

81a13c083cb83a82de51cbc71f2b3f66e2a0b8797732cc36f4a6fff7f51188a7c365e4e80569981df8813a61999838639d7bf38149969d13194145b8034aebca
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2:TDqPe1Cxcxk3ZAEUadzR8yc4

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3170) 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

2464 mssecsvc.exe
3068 mssecsvc.exe
2880 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
2464	mssecsvc.exe
3068	mssecsvc.exe
2880	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{37BAAEC5-C191-4C28-BB0F-E325833E4815}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{37BAAEC5-C191-4C28-BB0F-E325833E4815}\WpadDecisionTime = 109d65ff5babda01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-47-65-7c-a1-d4\WpadDecisionTime = 109d65ff5babda01	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\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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{37BAAEC5-C191-4C28-BB0F-E325833E4815}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-47-65-7c-a1-d4	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{37BAAEC5-C191-4C28-BB0F-E325833E4815}\46-47-65-7c-a1-d4	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
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 (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\UNCAsIntranet = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-47-65-7c-a1-d4\WpadDecision = "0"	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\{37BAAEC5-C191-4C28-BB0F-E325833E4815}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{37BAAEC5-C191-4C28-BB0F-E325833E4815}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-47-65-7c-a1-d4\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2028 wrote to memory of 2316	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 2316	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 2316	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 2316	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 2316	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 2316	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 2316	2028	rundll32.exe	rundll32.exe
PID 2316 wrote to memory of 2464	2316	rundll32.exe	mssecsvc.exe
PID 2316 wrote to memory of 2464	2316	rundll32.exe	mssecsvc.exe
PID 2316 wrote to memory of 2464	2316	rundll32.exe	mssecsvc.exe
PID 2316 wrote to memory of 2464	2316	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\62a0aaca659062139dec2f9742995d8f_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\62a0aaca659062139dec2f9742995d8f_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2316

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2464

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2880

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:3068

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
b2d1a374e0e0f925104fc873dad60860

SHA1
3568e1cb70800b6f90fb20baf7ab2001e74965f8

SHA256
d972e80a36c7b5de43d9fc67328408e31fef54bfdf65a347a97cbf9f58721117

SHA512
cf2219cf964fd2053e7da65f4e547773a2977bb8de5d3362945c096124febb29b7d1003455ce90315f834c2a0940e17e2ddbe07dbc9cdb8a2b865e029ba0584b

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
a5947eeab8ebb06b7d52aa18af302bd8

SHA1
86d87502721c7524a429069fe1737887487b8ddb

SHA256
a701ac320e17aea9bf5f74f063613eda241336a3ed534909c557395045ebca4d

SHA512
c8c38e0727c3aba179ec4234224cd16af334ad9ee822882249bc797b3cfe1c3892f84f68e6754f2dd36d61f8e4c4055c5c927b326f4a88c855b2ab61d297f0f4

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads