wannacry | 8342960295ccfbfa27e63d82bfafa918dfa831696b26bfe336ac490fcef92e5d

General

Target

6f4b49e21b51f9d8cf0d8067ab281211_JaffaCakes118.dll
Size

5.0MB
MD5

6f4b49e21b51f9d8cf0d8067ab281211
SHA1

e8b933ffd4bd0401afb33ad635d81a52e5d57d83
SHA256

8342960295ccfbfa27e63d82bfafa918dfa831696b26bfe336ac490fcef92e5d
SHA512

4d41a853db2c26ec67bc28da1b1b4397b4401229b40355201a8a1fd47cd5ca30d6cb2c73f89342fb4efd703e37018570dd4b39e86ace8a819a35bff465abd60e
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P5B+G:+DqPe1Cxcxk3ZAEUad7

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3160) 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

848 mssecsvc.exe
2468 mssecsvc.exe
3028 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
848	mssecsvc.exe
2468	mssecsvc.exe
3028	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\Wpad\{D8829A0F-3A71-4B6E-8834-94893B633852}\WpadDecisionTime = c065b67f00aeda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8829A0F-3A71-4B6E-8834-94893B633852}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-38-e2-66-6c-a1\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\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8829A0F-3A71-4B6E-8834-94893B633852}\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\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8829A0F-3A71-4B6E-8834-94893B633852}\5a-38-e2-66-6c-a1	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-38-e2-66-6c-a1\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8829A0F-3A71-4B6E-8834-94893B633852}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-38-e2-66-6c-a1\WpadDecisionTime = c065b67f00aeda01	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\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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0072000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\Wpad\{D8829A0F-3A71-4B6E-8834-94893B633852}\WpadNetworkName = "Network 2"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-38-e2-66-6c-a1	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 (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\History\CachePrefix = "Visited:"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1556 wrote to memory of 1524	1556	rundll32.exe	rundll32.exe
PID 1556 wrote to memory of 1524	1556	rundll32.exe	rundll32.exe
PID 1556 wrote to memory of 1524	1556	rundll32.exe	rundll32.exe
PID 1556 wrote to memory of 1524	1556	rundll32.exe	rundll32.exe
PID 1556 wrote to memory of 1524	1556	rundll32.exe	rundll32.exe
PID 1556 wrote to memory of 1524	1556	rundll32.exe	rundll32.exe
PID 1556 wrote to memory of 1524	1556	rundll32.exe	rundll32.exe
PID 1524 wrote to memory of 848	1524	rundll32.exe	mssecsvc.exe
PID 1524 wrote to memory of 848	1524	rundll32.exe	mssecsvc.exe
PID 1524 wrote to memory of 848	1524	rundll32.exe	mssecsvc.exe
PID 1524 wrote to memory of 848	1524	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6f4b49e21b51f9d8cf0d8067ab281211_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1556

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6f4b49e21b51f9d8cf0d8067ab281211_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1524

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:848

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3028

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:2468

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
a519cbc0a6750cac38c69004e5a305ea

SHA1
ad3a0018369ecdaffde82b93b43155c70ef46cd2

SHA256
d17557bfafea56a4c0b4e2e6c4ed11080a0826370e9e20c70bf7b160b91e671c

SHA512
8a1035d5787c4f9c13a5112e50bf3f77bb0b0be13e7e3a9f620349b22c315bc1267b7c05791266fdbf9fd85722cad6f2a746b8af69195697abde46a572c8fc74

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

MD5
beff63707ee2398011bff9c7f0d97701

SHA1
92675bddb6e3780fdbab2ce0292a5dbccac6150a

SHA256
136247427b5c5a1c0295477fb01c4212ca9e30d8368c3623dcc450750109576c

SHA512
fb247ca3cd7da39d7769a30161eabb14608f1dde7a1e27b644d00486af4413be14644966e9332fd28bd1fd9c44c360efbd134b8d9cae6e443976146bbe6e7a53

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads