wannacry | c48a1ee3d2862d8d526ba9bb9e6c322a3334027cbac40a8bfd93d1bdca43a9a0

General

Target

aec7e4e63a82a2265b11e904d66c95cf_JaffaCakes118.dll
Size

5.0MB
MD5

aec7e4e63a82a2265b11e904d66c95cf
SHA1

16e07a6bc509a5e487a44bedb62917be30887d61
SHA256

c48a1ee3d2862d8d526ba9bb9e6c322a3334027cbac40a8bfd93d1bdca43a9a0
SHA512

0476f9d7e6606d1ee75a74c67fc888ee172de4bf87b1906b0367bcea4c948bea6bab3633ec90d0b762cc81fb2740301d1088671db2e0571bf579fc1766ecb797
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhhlAH:+DqPoBhz1aRxcSUDk36SAEdhh2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3337) 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

1724 mssecsvc.exe
2140 mssecsvc.exe
2896 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
1724	mssecsvc.exe
2140	mssecsvc.exe
2896	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 (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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1A11334D-E564-44E2-AAFD-D2CF91F19F06}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-b0-33-36-b2-65\WpadDecision = "0"	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\Wpad\{1A11334D-E564-44E2-AAFD-D2CF91F19F06}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-b0-33-36-b2-65\WpadDecisionTime = e0a841352dbfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f010f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-b0-33-36-b2-65\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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 (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\{1A11334D-E564-44E2-AAFD-D2CF91F19F06}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1A11334D-E564-44E2-AAFD-D2CF91F19F06}\WpadDecisionTime = e0a841352dbfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1A11334D-E564-44E2-AAFD-D2CF91F19F06}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-b0-33-36-b2-65	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\Wpad\{1A11334D-E564-44E2-AAFD-D2CF91F19F06}\42-b0-33-36-b2-65	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2088 wrote to memory of 2224	2088	rundll32.exe	rundll32.exe
PID 2088 wrote to memory of 2224	2088	rundll32.exe	rundll32.exe
PID 2088 wrote to memory of 2224	2088	rundll32.exe	rundll32.exe
PID 2088 wrote to memory of 2224	2088	rundll32.exe	rundll32.exe
PID 2088 wrote to memory of 2224	2088	rundll32.exe	rundll32.exe
PID 2088 wrote to memory of 2224	2088	rundll32.exe	rundll32.exe
PID 2088 wrote to memory of 2224	2088	rundll32.exe	rundll32.exe
PID 2224 wrote to memory of 1724	2224	rundll32.exe	mssecsvc.exe
PID 2224 wrote to memory of 1724	2224	rundll32.exe	mssecsvc.exe
PID 2224 wrote to memory of 1724	2224	rundll32.exe	mssecsvc.exe
PID 2224 wrote to memory of 1724	2224	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aec7e4e63a82a2265b11e904d66c95cf_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2088

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aec7e4e63a82a2265b11e904d66c95cf_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2224

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1724

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2896

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:2140

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
5bf3524f2b3f64901439ac3184417ad3

SHA1
c1d26563775e249874a44082b58b7e3086693f77

SHA256
283e6a5db3b53b2517960bfe73ae297167c0bcb4ba93b50505437996e5118c9d

SHA512
f384a720c1d55758fa5c45208cc92b67d348c3453d089a812f116b13e14020cf8494396b571c1a8265bc463a364536a7e1b220935db3fdb2f813d60035c2c77b

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
045162d037abbfd8a8cdd87c63b9a174

SHA1
3250ceeb324e640c3c15a71cd7f162b026292d63

SHA256
214bad046768948847a83128685249827a3190edca5beca1103fd84b741f88cb

SHA512
fe8e92e7b648496ded6301e84911894ad2e3a7716ba7fb044c13ece2589f6dfae147529871e594b50e96e1b75928110e1bb7973debaf9eab23a28d9ef8ea742c

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads