wannacry | e0a728802289e67afe04d45082f08da34d39dd981674b2e7ff0828721a3b5220

General

Target

8924b339676e83475bfa7c709c4d54c3_JaffaCakes118.dll
Size

5.0MB
MD5

8924b339676e83475bfa7c709c4d54c3
SHA1

5f37a2d092f8ee5dda42522a324f3bfefbcb655d
SHA256

e0a728802289e67afe04d45082f08da34d39dd981674b2e7ff0828721a3b5220
SHA512

f41dd9522309b5114f54e2ad46769bcdcdf813c2bcbd8d2f094ca15a1dbc77cfce90b95c85bf2ab2a1e384ce1edf3e105b840758a73304833ca87d838bedd6f4
SSDEEP

49152:znAQbNRXdhnvxJM0H9PAMEcaEau3R8yAH1plAH:TDhRXdhvxWa9P593R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3083) 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

1860 mssecsvc.exe
2688 mssecsvc.exe
1108 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
1860	mssecsvc.exe
2688	mssecsvc.exe
1108	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\WpadDecisionTime = b00c6b62ccb3da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-a6-c8-69-d9-42\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\ZoneMap\	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
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\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-a6-c8-69-d9-42\WpadDecisionTime = b00c6b62ccb3da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
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\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\7a-a6-c8-69-d9-42	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-a6-c8-69-d9-42\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
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\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-a6-c8-69-d9-42	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\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1992 wrote to memory of 1632	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 1632	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 1632	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 1632	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 1632	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 1632	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 1632	1992	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 1860	1632	rundll32.exe	mssecsvc.exe
PID 1632 wrote to memory of 1860	1632	rundll32.exe	mssecsvc.exe
PID 1632 wrote to memory of 1860	1632	rundll32.exe	mssecsvc.exe
PID 1632 wrote to memory of 1860	1632	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8924b339676e83475bfa7c709c4d54c3_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1992

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8924b339676e83475bfa7c709c4d54c3_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1632

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1860

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1108

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:2688

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
837ad9bb9ed5e918b1ac530d607ffb20

SHA1
f39a2d4a16e6a545aedf8394a8aa38e6b556f24a

SHA256
19aef626421ddb69b2f8a35a7e649672f151f9a84edf8c1136881aa5113d03f8

SHA512
f0a2dd9b3e12c28e53850b31f69341d7dd4b517886f92ad111b0c42221257485cdd603228370d684f0b0bf42e59312ed4f1c4f444ed32733770a3d01885db01d

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
8dfaeb8472d8f536ce25f6136561d21c

SHA1
03a642c5a02873310c6ac2ea4a748d0036064f61

SHA256
2b79efbdab50d7b080f31aeecb8a51684521d8799db84667a708738f1a3794e4

SHA512
a7b4a2743bdec1b8dd3507968ae9daa68266f3d3ae9fd2a605890127433855984aa96052a993de5e8844674fd0e384d92d53ed0da64e5626ce89ce72ded3116f

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads