wannacry | 5747125368fb92ebcda6a8f101cfcacb44927fd91276e75a9e51124a7200a79a

General

Target

9a1940abeaadc51b10733e826a450261_JaffaCakes118.dll
Size

5.0MB
MD5

9a1940abeaadc51b10733e826a450261
SHA1

44d0ae6e823f5ab51f5bb95a5850d6451d91db92
SHA256

5747125368fb92ebcda6a8f101cfcacb44927fd91276e75a9e51124a7200a79a
SHA512

c1a8c649e87e131d4b2dc3e7e17ac7487eba884476133059f0aa1759989572c577c7043aed10fa924f9828797bcf3671d045d99c62826ce320f42a0df56bdf81
SSDEEP

98304:+DqPoBhz1aRw6SAEdhvxWa9P593R8yAVp2H:+DqPe1CwZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3282) 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

2320 mssecsvc.exe
1364 mssecsvc.exe
2672 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
2320	mssecsvc.exe
1364	mssecsvc.exe
2672	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\ProxyEnable = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\WpadDecisionTime = 500df04fd8b7da01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-24-0f-a9-df-c2\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f003f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\WpadDecision = "0"	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\5a-24-0f-a9-df-c2	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-24-0f-a9-df-c2\WpadDecisionTime = 500df04fd8b7da01	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\History\CachePrefix = "Visited:"	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\5a-24-0f-a9-df-c2	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-24-0f-a9-df-c2\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\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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1976 wrote to memory of 2188	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 2188	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 2188	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 2188	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 2188	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 2188	1976	rundll32.exe	rundll32.exe
PID 1976 wrote to memory of 2188	1976	rundll32.exe	rundll32.exe
PID 2188 wrote to memory of 2320	2188	rundll32.exe	mssecsvc.exe
PID 2188 wrote to memory of 2320	2188	rundll32.exe	mssecsvc.exe
PID 2188 wrote to memory of 2320	2188	rundll32.exe	mssecsvc.exe
PID 2188 wrote to memory of 2320	2188	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a1940abeaadc51b10733e826a450261_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1976

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a1940abeaadc51b10733e826a450261_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2188

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2320

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2672

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:1364

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
1d9bafa39a6d33f165fbff549e4f8e27

SHA1
b5d0f58ec2f462c076de412e24ddda5daa9e2dc1

SHA256
55d78c601fd821984cfc38f33f4f90e99f6f9959eee4e3a3b1bf63b096c92c05

SHA512
338d1537b26ef90d37ace7ab2340cf91625e0d06cd4a462be4383b7166e2bb9b81609e468b7d77903d4f672af821925ae03ce9f8c57cda8b4416d622f47145a0

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
d0553fb42e06aa684d628286939376aa

SHA1
2f1a16b7e699ab69aae04a3eb95688a0cdbeed80

SHA256
66e1c9d094b2e880596226ee80f3f05131fc464929e256afdf707ef24cd42695

SHA512
f45ca7a0adac8aa1bcd7eef48d543047e391392cb2c2c5566fcdcd0816e8ce268190ffbe9dc1250b6713a888ec3c5310541bfb85d57b048b1ab166ad18d878ba

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads