wannacry | 72b9d265087cad1a5b7b4971e3d7638018d6bb4197ea304559d3f26b50a66079

General

Target

ae7afd9cd61ba69634680827681ec156_JaffaCakes118.dll
Size

5.0MB
MD5

ae7afd9cd61ba69634680827681ec156
SHA1

e6c70b3b1700dd38308c9cb5924e4add09182a97
SHA256

72b9d265087cad1a5b7b4971e3d7638018d6bb4197ea304559d3f26b50a66079
SHA512

6b7bba5cd2cc964ca2543c270220f8cf8d5086e902d66b591911fcb4f22dabb7c4e0f17a036b565af052c9046e7c154644c9d666640437c88c55b6946e66d4f7
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0KdNLKz662619XEk:SnAQqMSPbcBVKNRAB

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2662) 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

2632 mssecsvc.exe
2612 mssecsvc.exe
2460 tasksche.exe

pid	process
2632	mssecsvc.exe
2612	mssecsvc.exe
2460	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\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-eb-7e-10-10-1b	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\32-eb-7e-10-10-1b	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-eb-7e-10-10-1b\WpadDecisionTime = 2059157d21bfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-eb-7e-10-10-1b\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f002e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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	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\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\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\WpadDecisionTime = 2059157d21bfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\WpadNetworkName = "Network 3"	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
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\32-eb-7e-10-10-1b\WpadDecisionReason = "1"	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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1924 wrote to memory of 1792	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 1792	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 1792	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 1792	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 1792	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 1792	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 1792	1924	rundll32.exe	rundll32.exe
PID 1792 wrote to memory of 2632	1792	rundll32.exe	mssecsvc.exe
PID 1792 wrote to memory of 2632	1792	rundll32.exe	mssecsvc.exe
PID 1792 wrote to memory of 2632	1792	rundll32.exe	mssecsvc.exe
PID 1792 wrote to memory of 2632	1792	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ae7afd9cd61ba69634680827681ec156_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ae7afd9cd61ba69634680827681ec156_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1792

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2632

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2460

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:2612

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
7a1fc08e02a918d742082700c7916e40

SHA1
f0d981ab47847638104e234d32a02d1891522d7a

SHA256
116109a01c7e8b13eea28f6dcfa6622ffe7823ccb09f8ae710ddcdbbe13e8e88

SHA512
d124584ac470da769cc40e3097afe07ca7f9d10f68f5292574d880a56321b32bdf89a146586c0227678db95f0e276e0269a5fedf61c1d9c7bbb78a321c1c68df

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
019b06f27ee113b9fea8d33ed07e21da

SHA1
4efc7d827d63d04ff8b287e02ae50015c60b967b

SHA256
b69a89f6d5df4178a50a5a01add401d9540b279c3ea484e8b179d46c7edcd6a3

SHA512
694c7a4f68f6ec96254d494ee28913b552a6db79be1b3f738e90a6ed7cb1e89274ceac9a5cb5403f3bb63cd8a22a4c7df7d2448ffd6b56f183a19af961878144

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads