wannacry | 63e143b51ac8e3c8fbea70721277c23591efa2f4a235da9fbcc6ef6ae4842831

General

Target

9476d1e5e154653db14527d81b3a174c_JaffaCakes118.dll
Size

5.0MB
MD5

9476d1e5e154653db14527d81b3a174c
SHA1

1e985a82ebb778859b778024a717bf986ac183ff
SHA256

63e143b51ac8e3c8fbea70721277c23591efa2f4a235da9fbcc6ef6ae4842831
SHA512

42b6d87dd3488095248532aa0ac94ca80b4f70f57b5305a9052da99cce6b0d76c1bb573b2134e0550fe93c9fd2a8f31472d06651654e9a145e812ab7521d0544
SSDEEP

49152:SnAQqMSPbcBVQej/1INRuEau3R8yAH1plAH:+DqPoBhz1aRL3R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3122) 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

908 mssecsvc.exe
2156 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
908	mssecsvc.exe
2156	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
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\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\02-e5-93-0e-bb-31	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e5-93-0e-bb-31\WpadDecision = "0"	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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\WpadDecisionTime = 40990b9d68b6da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e5-93-0e-bb-31	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e5-93-0e-bb-31\WpadDecisionTime = 40990b9d68b6da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e5-93-0e-bb-31\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0122000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2844 wrote to memory of 1244	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 1244	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 1244	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 1244	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 1244	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 1244	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 1244	2844	rundll32.exe	rundll32.exe
PID 1244 wrote to memory of 908	1244	rundll32.exe	mssecsvc.exe
PID 1244 wrote to memory of 908	1244	rundll32.exe	mssecsvc.exe
PID 1244 wrote to memory of 908	1244	rundll32.exe	mssecsvc.exe
PID 1244 wrote to memory of 908	1244	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9476d1e5e154653db14527d81b3a174c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2844

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9476d1e5e154653db14527d81b3a174c_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1244

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:908

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:2156

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
b2e0aa14a73ab71dcf04a77f35689c38

SHA1
88146bc3aa85cf243ce3d423a3885fbc3cd0a08e

SHA256
d9a1bd16dc684d82a44c9e9527fcb5e284618fca91b260a70059bc9a3ec382fb

SHA512
72980f45714174d070383e930848ebc1c6f1c5ab9b17e98cb207573b96002d78047e2a041ef2ae702d3feff59b5cedc0f8624b41fbf22158d6659c7142c17708

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
df94a40a6a8b12834abbd2de6e67387c

SHA1
c97eb8d95fdd8aa93969f06c3c62b0ddcd248e83

SHA256
fe027f20645c585d8224213af9d4e74da76448ce821552ae337f213e6878ea93

SHA512
522f2df1ea07417c193d0f05f086b01489985e46c58d9cf4449a4dbdb3aa0516dcd7773e613fcbe5382d41f7dd54d7b03cbc7ad40ff893c0d594b7a621dc5291

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads