wannacry | 8244770d31ed59a1d757dde65a2bfa0cdac088e7f11d57f99100cee47aac7f46

General

Target

b08b35744e52a38a52f0c8a8d34a003a_JaffaCakes118.dll
Size

5.0MB
MD5

b08b35744e52a38a52f0c8a8d34a003a
SHA1

5cdb0d30ebe0979185e78f88c2503b8df9564a52
SHA256

8244770d31ed59a1d757dde65a2bfa0cdac088e7f11d57f99100cee47aac7f46
SHA512

6f7697f1ca88ed106ff8cb8961ca535894f0b9ae4b68e16390a8cb6487844d24a44898bcd62849f77785ae47175ae2e6d90bd3f40c91e32cf2c66dfbeea7398d
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P59cyAVp2H:TDqPe1Cxcxk3ZAEUadYyc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3134) 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

2736 mssecsvc.exe
2712 mssecsvc.exe
2420 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
2736	mssecsvc.exe
2712	mssecsvc.exe
2420	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\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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e6000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DEC5CDA-76F1-4186-93F3-081B63244F6F}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DEC5CDA-76F1-4186-93F3-081B63244F6F}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4e-66-2e-99-92\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4e-66-2e-99-92	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DEC5CDA-76F1-4186-93F3-081B63244F6F}\96-4e-66-2e-99-92	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4e-66-2e-99-92\WpadDecisionTime = 7005ee5b77bfda01	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\Content\CachePrefix	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\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DEC5CDA-76F1-4186-93F3-081B63244F6F}\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\Connections	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\Wpad\96-4e-66-2e-99-92\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DEC5CDA-76F1-4186-93F3-081B63244F6F}\WpadDecisionTime = 7005ee5b77bfda01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DEC5CDA-76F1-4186-93F3-081B63244F6F}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2156 wrote to memory of 2816	2156	rundll32.exe	rundll32.exe
PID 2156 wrote to memory of 2816	2156	rundll32.exe	rundll32.exe
PID 2156 wrote to memory of 2816	2156	rundll32.exe	rundll32.exe
PID 2156 wrote to memory of 2816	2156	rundll32.exe	rundll32.exe
PID 2156 wrote to memory of 2816	2156	rundll32.exe	rundll32.exe
PID 2156 wrote to memory of 2816	2156	rundll32.exe	rundll32.exe
PID 2156 wrote to memory of 2816	2156	rundll32.exe	rundll32.exe
PID 2816 wrote to memory of 2736	2816	rundll32.exe	mssecsvc.exe
PID 2816 wrote to memory of 2736	2816	rundll32.exe	mssecsvc.exe
PID 2816 wrote to memory of 2736	2816	rundll32.exe	mssecsvc.exe
PID 2816 wrote to memory of 2736	2816	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b08b35744e52a38a52f0c8a8d34a003a_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2156

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b08b35744e52a38a52f0c8a8d34a003a_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2816

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2736

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2420

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:2712

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
f427eb980d9d212790d2c82e2de16f04

SHA1
2a535ca6a301cabce28e4571f3247a307c85a85c

SHA256
6bdb3786bf861522359386d2cc5d017e0e06e1fe5cbd1f1be43eee24f3def897

SHA512
07482258f76f238dc7afe9f1f77913daf10f6f89ad5243b0e1d6751da8b857604e097effea1dcbebaca6f0028bc2edbe71bcc53787a7fc8c0a01ccbf6bc793c7

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7888f1f4e712ba42b2c5e6f02422b7ba

SHA1
e71c10b85284f572620705e530b6aba644f3732d

SHA256
8995cf65e9f0630a66a405507271f7f42b6c1cf59b9c17e0fd6608857736cd59

SHA512
11373e6954032dc0b6576613368ec7ef6a26fdb8f4c73b7a5ecc15ad889ff90926c0ef1c0e89f4f3e6d400f6b2146c75f89f8715c896fe4cfc932bf8a5b30f43

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads