wannacry | e919919b0615fcd5e7c878c08b0e98ef46730a5b5bb8cbf5661efb16f8a3ad01

General

Target

b48f982c64375c10fc168deae12e70ac_JaffaCakes118.dll
Size

5.0MB
MD5

b48f982c64375c10fc168deae12e70ac
SHA1

a23c607e573be5efe3d2001caec3304cdf8bd3dc
SHA256

e919919b0615fcd5e7c878c08b0e98ef46730a5b5bb8cbf5661efb16f8a3ad01
SHA512

8aa653cf40aaf9b08d88ed76a946bc29a3ecc67bf264e9077b05e8a9459117a18bc3c54aaed72911ff8281eb028f90e3f75de6f6b01e77768b7136e771133626
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAMhnvxJM0H9PAME:+DqPoBhz1aRxcSUDk36SAMhvxWa9P5

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2660) 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

2316 mssecsvc.exe
2392 mssecsvc.exe
2500 tasksche.exe

pid	process
2316	mssecsvc.exe
2392	mssecsvc.exe
2500	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\Wpad\ca-02-5b-62-74-e4\WpadDecision = "0"	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\ProxyEnable = "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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{02FFA379-EAE0-4C23-A05C-D513EEABB480}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{02FFA379-EAE0-4C23-A05C-D513EEABB480}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-02-5b-62-74-e4\WpadDecisionTime = 70e2aacd1ac0da01	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\Wpad\{02FFA379-EAE0-4C23-A05C-D513EEABB480}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{02FFA379-EAE0-4C23-A05C-D513EEABB480}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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
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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0098000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{02FFA379-EAE0-4C23-A05C-D513EEABB480}\WpadDecisionTime = 70e2aacd1ac0da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-02-5b-62-74-e4	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
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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{02FFA379-EAE0-4C23-A05C-D513EEABB480}\ca-02-5b-62-74-e4	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-02-5b-62-74-e4\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1368 wrote to memory of 2356	1368	rundll32.exe	rundll32.exe
PID 1368 wrote to memory of 2356	1368	rundll32.exe	rundll32.exe
PID 1368 wrote to memory of 2356	1368	rundll32.exe	rundll32.exe
PID 1368 wrote to memory of 2356	1368	rundll32.exe	rundll32.exe
PID 1368 wrote to memory of 2356	1368	rundll32.exe	rundll32.exe
PID 1368 wrote to memory of 2356	1368	rundll32.exe	rundll32.exe
PID 1368 wrote to memory of 2356	1368	rundll32.exe	rundll32.exe
PID 2356 wrote to memory of 2316	2356	rundll32.exe	mssecsvc.exe
PID 2356 wrote to memory of 2316	2356	rundll32.exe	mssecsvc.exe
PID 2356 wrote to memory of 2316	2356	rundll32.exe	mssecsvc.exe
PID 2356 wrote to memory of 2316	2356	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b48f982c64375c10fc168deae12e70ac_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1368

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b48f982c64375c10fc168deae12e70ac_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2356

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2316

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2500

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:2392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
0cff66ec3397a750350d4b0665d242e6

SHA1
973a121460bd84120bc84adf98243d2bb2426db8

SHA256
df121aaf9a066929478ee67f681089a19a618244627cb0faeecf3830568ba7f1

SHA512
aba3fdce48bd48706e77352f3cebaa290eff98455b3ff46da328b4f650251ff076b4fdcedb3850107964f15a2fc16a490853012ed511237d9e3ebbaa33d4e70d

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
dae93edcd0dcbcc6356a9f53c755392b

SHA1
6ad73471b99c2a1e850598c1e4bd08a7bcd381fd

SHA256
574835b083cc6e7bc0ae280fbe09310d716c373d91332bb4ea092d263e3fa850

SHA512
f33a35981523616d7c11def4781b2aa34d31a9d23e339a38970fe204bf74fd6ed2313af20ab8613228e661ad4307998e5356b7e19c8d08b0249a8025ac9813ad

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads