wannacry | dc9e52ca2f0ae795394ceed7959eee45e6eb78a33757a4d274246ea33c492ea2

General

Target

abb8ae7154abbdfad58617fbd6e37e25_JaffaCakes118.dll
Size

5.0MB
MD5

abb8ae7154abbdfad58617fbd6e37e25
SHA1

666e933158146b2e09b17d4d2928f88f641e441a
SHA256

dc9e52ca2f0ae795394ceed7959eee45e6eb78a33757a4d274246ea33c492ea2
SHA512

0b4f72fe74c8c011524c8124d152ff9682378c849b02942e00b5b0d7027f7036131a47dbbaa2f5c729b19fcc95d14401cd3a2ce5ca7f133a5a55b1ed2cb8caeb
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0BkQg6eX6SA:SnAQqMSPbcBVBkQo6SA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2647) 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

2980 mssecsvc.exe
2616 mssecsvc.exe
2456 tasksche.exe

pid	process
2980	mssecsvc.exe
2616	mssecsvc.exe
2456	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 = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
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\52-a4-6c-d2-f4-72	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-a4-6c-d2-f4-72\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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0026000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-a4-6c-d2-f4-72\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
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\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\WpadDecisionTime = 805590e2a8beda01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-a4-6c-d2-f4-72\WpadDecisionTime = 805590e2a8beda01	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\Content\CachePrefix	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\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\52-a4-6c-d2-f4-72	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1612 wrote to memory of 1900	1612	rundll32.exe	rundll32.exe
PID 1612 wrote to memory of 1900	1612	rundll32.exe	rundll32.exe
PID 1612 wrote to memory of 1900	1612	rundll32.exe	rundll32.exe
PID 1612 wrote to memory of 1900	1612	rundll32.exe	rundll32.exe
PID 1612 wrote to memory of 1900	1612	rundll32.exe	rundll32.exe
PID 1612 wrote to memory of 1900	1612	rundll32.exe	rundll32.exe
PID 1612 wrote to memory of 1900	1612	rundll32.exe	rundll32.exe
PID 1900 wrote to memory of 2980	1900	rundll32.exe	mssecsvc.exe
PID 1900 wrote to memory of 2980	1900	rundll32.exe	mssecsvc.exe
PID 1900 wrote to memory of 2980	1900	rundll32.exe	mssecsvc.exe
PID 1900 wrote to memory of 2980	1900	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\abb8ae7154abbdfad58617fbd6e37e25_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\abb8ae7154abbdfad58617fbd6e37e25_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1900

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2980

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2456

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:2616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
d714de5177b8317d3f15f161dcd7bff8

SHA1
bcceeb2ab589aeff2b890f9581c7e6aac82e5a72

SHA256
c87f021d535c6ab171dbc9c9c1daf084c2c1f366ba307b3efa3923fbbd1f8227

SHA512
27879ecb9519653b907886a2326be55c17d0dc8a205631cef075e551548c7ad5e50ab4acba4d2cbe86387ad31275d73ae377c3b3857882a41c0df70fe35b45af

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3eb8205a8574d044000a515e2d445814

SHA1
dc67dbb939bb21a9a187f53da19750d50e2f34b1

SHA256
92f53ba1bf6dfe19b9404d5dd93c9275496933ea1bd97b83ca1c73996d13acff

SHA512
740889c4b9cb4b32f2111bd85db1cc5615ad6ba9821df7cf211c05e7fb3fb5c89f406418469d98575590e15d39637cef97000ba181b0798e8bbbbd737d89233e

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads