wannacry | 05db4f6d2715f067d3b212bbbd91aafc4a6d66316ddd6e7e4a523f31841b4bc3

General

Target

20520a36e7273a3b6128369fa72c1aa7_JaffaCakes118.dll
Size

5.0MB
MD5

20520a36e7273a3b6128369fa72c1aa7
SHA1

02276c660f3622a32ed8c5ba9cd42a42269e2a17
SHA256

05db4f6d2715f067d3b212bbbd91aafc4a6d66316ddd6e7e4a523f31841b4bc3
SHA512

bcb2aa934e58f3f48c59dcf3c24ea41de1e83510382d790cd5b152161b037ee27c59bb546cbc82e0933782d8d0761a808ff9ce00fa9883907e7d7f677a6111f4
SSDEEP

98304:TDqPoBhzPyqRxcSUDk36SAEdhvxWa9P593RzPfwo:TDqPeaSxcxk3ZAEUadzRLfw

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3232) 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

2040 mssecsvc.exe
1116 mssecsvc.exe
1968 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
2040	mssecsvc.exe
1116	mssecsvc.exe
1968	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\be-1c-77-23-85-b9	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\WpadDecisionTime = 70fb9fd669a0da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\WpadNetworkName = "Network 3"	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
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 (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-1c-77-23-85-b9\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-1c-77-23-85-b9\WpadDecision = "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\ZoneMap\AutoDetect = "1"	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0089000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\WpadDecisionReason = "1"	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\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\be-1c-77-23-85-b9	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-1c-77-23-85-b9\WpadDecisionTime = 70fb9fd669a0da01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2336 wrote to memory of 1680	2336	rundll32.exe	rundll32.exe
PID 2336 wrote to memory of 1680	2336	rundll32.exe	rundll32.exe
PID 2336 wrote to memory of 1680	2336	rundll32.exe	rundll32.exe
PID 2336 wrote to memory of 1680	2336	rundll32.exe	rundll32.exe
PID 2336 wrote to memory of 1680	2336	rundll32.exe	rundll32.exe
PID 2336 wrote to memory of 1680	2336	rundll32.exe	rundll32.exe
PID 2336 wrote to memory of 1680	2336	rundll32.exe	rundll32.exe
PID 1680 wrote to memory of 2040	1680	rundll32.exe	mssecsvc.exe
PID 1680 wrote to memory of 2040	1680	rundll32.exe	mssecsvc.exe
PID 1680 wrote to memory of 2040	1680	rundll32.exe	mssecsvc.exe
PID 1680 wrote to memory of 2040	1680	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\20520a36e7273a3b6128369fa72c1aa7_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2336

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\20520a36e7273a3b6128369fa72c1aa7_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1680

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2040

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1968

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:1116

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
448KB

MD5
28e3300eab6717ad6c82b806b3c2ed5b

SHA1
57a039778942f4bcf552a1f6fe026f5d95743740

SHA256
3926aa857d3ed3395fb57da8a0936e250b05609af999d82b64c5526eff276d3e

SHA512
dbb51ec27cb2d139f6ceb6cac2f1381a4ab1383bd08cde61964bef657addd2073e65494c01605f429238cfe31c591461fd648980541afaf643d801753696fb5a

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C:\Windows\tasksche.exe
Filesize
576KB

MD5
e8c39c862793599459a8bc39ccd156ec

SHA1
d5f2d7b50dad156c5ee015ecafb70a67d20975fb

SHA256
171ab324ad9d258ab2036302aa944d23e4184d35b5a48ab171a09dd46e1eb8ba

SHA512
c2d448f84fb6b35213bb1aa1dff4ae0571982c7f3efc1f21921602ec54f9f2cfef56ffaf8a13bdcd981c41ed6149c7eb28fc0d7ecd8592266b164a7e25f962b8

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads