wannacry | 8eb1994a3284c0bf23db46611b9d425c73e7d3da7150773106e94783b804934a

General

Target

a20b24cffc7f39f8b9770622bce4fac6_JaffaCakes118.dll
Size

5.0MB
MD5

a20b24cffc7f39f8b9770622bce4fac6
SHA1

5f94efb55dc739d410965dc8d04f6488fe644c10
SHA256

8eb1994a3284c0bf23db46611b9d425c73e7d3da7150773106e94783b804934a
SHA512

8199bc3e8a89dabf45c02f29693103c74a5c721fc6acf99c72a192d52e9d79ab4529445370363b72a2b8735defff08c14c4047dea4dff6d9ccda60de4bbaf083
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yA:+DqPe1Cxcxk3ZAEUadzR8y

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2665) 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

2092 mssecsvc.exe
2584 mssecsvc.exe
1908 tasksche.exe

pid	process
2092	mssecsvc.exe
2584	mssecsvc.exe
1908	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\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f009d000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-f7-ef-12-bd-5b\WpadDecisionReason = "1"	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\AutoDetect = "1"	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-f7-ef-12-bd-5b	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\46-f7-ef-12-bd-5b	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\Connections	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\Wpad\46-f7-ef-12-bd-5b\WpadDecisionTime = f0eaab0601bdda01	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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FB8A42F-EB9A-4AA7-8DEC-BDC0879369E9}\WpadDecisionTime = f0eaab0601bdda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-f7-ef-12-bd-5b\WpadDecision = "0"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2072 wrote to memory of 2952	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 2952	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 2952	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 2952	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 2952	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 2952	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 2952	2072	rundll32.exe	rundll32.exe
PID 2952 wrote to memory of 2092	2952	rundll32.exe	mssecsvc.exe
PID 2952 wrote to memory of 2092	2952	rundll32.exe	mssecsvc.exe
PID 2952 wrote to memory of 2092	2952	rundll32.exe	mssecsvc.exe
PID 2952 wrote to memory of 2092	2952	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a20b24cffc7f39f8b9770622bce4fac6_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2072

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a20b24cffc7f39f8b9770622bce4fac6_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2952

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2092

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1908

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:2584

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
09955f5c8a9b171f8ab35d0638ada772

SHA1
de5aa3c7c370bb0da07dc3c1005017c37d2f4bff

SHA256
57bd7332eb81af59a39e72b0fcb63bc7066597ba31a4a52d8c1faf0240d3f11e

SHA512
b88cbf801b00f1aa912496dffaef1a14eed455d5a32361c347086890f2b08fa75338aea607a09bed063c88ddaf4014ccd74787b049816e23acf3e475c8d0c9ef

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c30669a39629363265e7f9e755ae99a2

SHA1
19ff8f6d093ca297e8194041888463f4f8c01b45

SHA256
66627ffeba57f450c876618acde5ec7b39db514a52872c05bc716abd909620d2

SHA512
182c5f2cd451861ec1d598ddd29bae51edc5067d2ae680b67ac67dca2125a845777faae7d390518e4de0cc6858d86a2c37cbea6df236be294e38ea722057e161

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads