wannacry | 41a83dd328f86adcaa3c24ea9ca0f3f8254ebff3bf143ae050c43f1eec77bea7

General

Target

58af0714731eac2a433d683ea673378a_JaffaCakes118.dll
Size

5.0MB
MD5

58af0714731eac2a433d683ea673378a
SHA1

01958036854f3f55716971d09d8809c380d4ba8e
SHA256

41a83dd328f86adcaa3c24ea9ca0f3f8254ebff3bf143ae050c43f1eec77bea7
SHA512

a96afe040d8add23aa13d4f949b3dd206ece6c062ef1fc711ac360a6c9c31cebb240aeb362cce4c7a38e782f7cff713bc905eca6ed95e5beaa0279520cbb2992
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0QeQjGvk+RdhAdmv1LJMfcH9PO6L:SnAQqMSPbcBVQejPRdhnvxJM0H9

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2919) 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

2436 mssecsvc.exe
2696 mssecsvc.exe
2740 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
2436	mssecsvc.exe
2696	mssecsvc.exe
2740	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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0031000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7e-13-bd-1f-4c-7f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7e-13-bd-1f-4c-7f\WpadDecision = "0"	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\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\WpadNetworkName = "Network 3"	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\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\WpadDecisionTime = 10a94d41aaa9da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\7e-13-bd-1f-4c-7f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7e-13-bd-1f-4c-7f\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	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\Wpad\7e-13-bd-1f-4c-7f\WpadDecisionTime = 10a94d41aaa9da01	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	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1988 wrote to memory of 2668	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2668	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2668	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2668	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2668	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2668	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2668	1988	rundll32.exe	rundll32.exe
PID 2668 wrote to memory of 2436	2668	rundll32.exe	mssecsvc.exe
PID 2668 wrote to memory of 2436	2668	rundll32.exe	mssecsvc.exe
PID 2668 wrote to memory of 2436	2668	rundll32.exe	mssecsvc.exe
PID 2668 wrote to memory of 2436	2668	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\58af0714731eac2a433d683ea673378a_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\58af0714731eac2a433d683ea673378a_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2668

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2436

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2740

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:2696

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
e6491d1e0a1f4922c34749ed8a5758bc

SHA1
94726f4af6cf955da96b5888df5605adcefb6aa3

SHA256
5ef98abc329cca92d972cc9d7fef49bd762f07631b8f3bb0183df4bfb3ef57ec

SHA512
6beee0559bf6e8a61fa14bf1ada2d8e69ea1dafc8e427ebfea6283130cd09ac4829fe044eead7faaea6890e36c14943aabb4c91453a4c1b0ddf7699254feb12a

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

MD5
5deb876be3170add4404bb31f0804fd4

SHA1
1efd4ca4c0ce81e8c91aaed9488331add0564b11

SHA256
5ce4b39b9488fae92e80f3b16f04f5a793da55af1e617fd83747b2ced32efcb1

SHA512
102256e3b59d08db64d240d969498ab1b55e092953ffee0e2ad1ea5554f7676eee620bf99f991040e8895eed93883a05beb70e4531fb6ec85f63dd7845b6691b

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads