wannacry | 022c9efcf232fdfabcfba1423deb8ade3a49ae6480bddd4d58b4ca712e2ebd02

General

Target

52273974a0123165fa8fbd867fa6dce5_JaffaCakes118.dll
Size

5.0MB
MD5

52273974a0123165fa8fbd867fa6dce5
SHA1

35f1258534d55dd40ad036af00a7b82cb692843d
SHA256

022c9efcf232fdfabcfba1423deb8ade3a49ae6480bddd4d58b4ca712e2ebd02
SHA512

389091e8ebbbbeb2709bed52ee3cbb7149a8f4f283c49cbf35ccbc93437f3472a4c272ab401ca3f22eadcfce067bfde179a1be1a9dbf07aa6c8ea53506ca9744
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIwQ2bYy:SnAQqMSPbcBVQej/

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3170) 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

2196 mssecsvc.exe
2176 mssecsvc.exe
2604 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
2196	mssecsvc.exe
2176	mssecsvc.exe
2604	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\Wpad\26-bf-48-f0-b3-14\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-bf-48-f0-b3-14\WpadDecision = "0"	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\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 (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\Wpad\{577E7B7E-0A5D-4FB1-83A5-348428632846}\WpadDecisionTime = 50d83f8eb6a8da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{577E7B7E-0A5D-4FB1-83A5-348428632846}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{577E7B7E-0A5D-4FB1-83A5-348428632846}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-bf-48-f0-b3-14	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
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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0068000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{577E7B7E-0A5D-4FB1-83A5-348428632846}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{577E7B7E-0A5D-4FB1-83A5-348428632846}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{577E7B7E-0A5D-4FB1-83A5-348428632846}\26-bf-48-f0-b3-14	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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-bf-48-f0-b3-14\WpadDecisionTime = 50d83f8eb6a8da01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3024 wrote to memory of 3064	3024	rundll32.exe	rundll32.exe
PID 3024 wrote to memory of 3064	3024	rundll32.exe	rundll32.exe
PID 3024 wrote to memory of 3064	3024	rundll32.exe	rundll32.exe
PID 3024 wrote to memory of 3064	3024	rundll32.exe	rundll32.exe
PID 3024 wrote to memory of 3064	3024	rundll32.exe	rundll32.exe
PID 3024 wrote to memory of 3064	3024	rundll32.exe	rundll32.exe
PID 3024 wrote to memory of 3064	3024	rundll32.exe	rundll32.exe
PID 3064 wrote to memory of 2196	3064	rundll32.exe	mssecsvc.exe
PID 3064 wrote to memory of 2196	3064	rundll32.exe	mssecsvc.exe
PID 3064 wrote to memory of 2196	3064	rundll32.exe	mssecsvc.exe
PID 3064 wrote to memory of 2196	3064	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\52273974a0123165fa8fbd867fa6dce5_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3024

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\52273974a0123165fa8fbd867fa6dce5_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3064

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2196

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2604

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:2176

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
4baf69383a9fc1b6da854b63272e300f

SHA1
08ea3eb52583c2fd25ee7dc6a19ef5fa6c199138

SHA256
04910bfe3dab5e3d912b28c4c94614d9b826bb261dbe5135e3cca5f854624221

SHA512
13f6995db6ddb62f3731105af44cf500daff1f365324c45ce24da2d9026f853db57ca2a9e3a1f29e5c87c9f2655a4b6a6f6b5f761e93b1f541b4752559cd9278

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
c5df4ec60f1f3a939577111217672171

SHA1
0eee00b69479940e562650d8fa31f7e89678152f

SHA256
8ff377030e6bc316de9d062090a780542d7512ca4debc1e21c78f5a4720b7d2f

SHA512
2f9d784fde6ff56cbc2c1e355c7a2288d34722b0f8adbe9c50ddebb4cb0380f926323f83222f8182c101d2190a7aff7f9f0f67c96ce00a20a9e7c8af9248c0f5

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Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads