wannacry | 368b1de4a66ae6549b5eadcfcee496ced9774011a890695fe12b355be546b6dd

General

Target

1791e7c46df7497e07fd0f678beaa31c_JaffaCakes118.dll
Size

5.0MB
MD5

1791e7c46df7497e07fd0f678beaa31c
SHA1

7f6616a77325c892ec4c63ae1ca5f0d245722fd6
SHA256

368b1de4a66ae6549b5eadcfcee496ced9774011a890695fe12b355be546b6dd
SHA512

8b2b43cb2231f7a2dc612cf02b96d0437443a65df3407f3030d5a9a1692ee24f384d88ede82d8180348f9577387dc9fad92bae6fe7dfdfe25e0690ed034db855
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593jJ:TDqPe1Cxcxk3ZAEUadzj

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3364) 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

1672 mssecsvc.exe
1996 mssecsvc.exe
2072 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
1672	mssecsvc.exe
1996	mssecsvc.exe
2072	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:

mssecsvc.exerundll32.exe

description ioc process

File created C:\WINDOWS\tasksche.exe mssecsvc.exe
File created C:\WINDOWS\mssecsvc.exe rundll32.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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\Connections	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\Wpad\{BC6B1433-1661-4C64-9947-012EB7BD0820}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BC6B1433-1661-4C64-9947-012EB7BD0820}\WpadDecisionTime = f07669b7e39eda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8a-52-f3-de-d7-f3	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8a-52-f3-de-d7-f3\WpadDecisionTime = f07669b7e39eda01	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\ZoneMap\AutoDetect = "1"	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8a-52-f3-de-d7-f3\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00f9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BC6B1433-1661-4C64-9947-012EB7BD0820}\8a-52-f3-de-d7-f3	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8a-52-f3-de-d7-f3\WpadDecisionReason = "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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BC6B1433-1661-4C64-9947-012EB7BD0820}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BC6B1433-1661-4C64-9947-012EB7BD0820}\WpadDecision = "0"	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\ZoneMap\	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\Wpad\{BC6B1433-1661-4C64-9947-012EB7BD0820}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2080 wrote to memory of 1668	2080	rundll32.exe	rundll32.exe
PID 2080 wrote to memory of 1668	2080	rundll32.exe	rundll32.exe
PID 2080 wrote to memory of 1668	2080	rundll32.exe	rundll32.exe
PID 2080 wrote to memory of 1668	2080	rundll32.exe	rundll32.exe
PID 2080 wrote to memory of 1668	2080	rundll32.exe	rundll32.exe
PID 2080 wrote to memory of 1668	2080	rundll32.exe	rundll32.exe
PID 2080 wrote to memory of 1668	2080	rundll32.exe	rundll32.exe
PID 1668 wrote to memory of 1672	1668	rundll32.exe	mssecsvc.exe
PID 1668 wrote to memory of 1672	1668	rundll32.exe	mssecsvc.exe
PID 1668 wrote to memory of 1672	1668	rundll32.exe	mssecsvc.exe
PID 1668 wrote to memory of 1672	1668	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1791e7c46df7497e07fd0f678beaa31c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2080

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1791e7c46df7497e07fd0f678beaa31c_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1668

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1672

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2072

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:1996

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
dafd24f0332020c02cae120daab8d23f

SHA1
2298edc78f1f1272edc6ebe7025b1c7d6b8de149

SHA256
8c7064e5ed8b066fca9d4f664b867a3fdfa9fc082d2b0881b5fad1d1e6f1cf93

SHA512
068c00fbdcdf12480a1e97c14eea4d71ec40cea85fdb269d8b4a8d991afbd3123e486d5232423a57b98a3d30394567cb9478c2bb9e902120f33133efe4ce2d25

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
284f10c58b66585774132d225d98cef8

SHA1
60a48bf489753d74e31526cd8de8a92a65d9e34f

SHA256
b46a1e8230fa494e873c631e7ecfbce736dfad6167479cd039dcd44769574f95

SHA512
3c465527a711eee7d55bddaaf41036418c9dab214d099f145409a4f10a6e4ffeadd33a3f0c62830124df2bbe56de3e41647836651e7df6458510d661614f702a

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads