wannacry | 4e9736ddc5e3c3d5a75f65cb0f0c3e9fc545c69042d8791a52c7e7fc353d3a38

General

Target

87bf83017d7b2f34594792febc376508_JaffaCakes118.dll
Size

5.0MB
MD5

87bf83017d7b2f34594792febc376508
SHA1

604b87adbe90e17247da99159c2b2b803e19799f
SHA256

4e9736ddc5e3c3d5a75f65cb0f0c3e9fc545c69042d8791a52c7e7fc353d3a38
SHA512

6f4493ea82ad786f2680119c096ec6345c77a62e6582fdb901fb5c73e4cef20f589146daf3d2a726d346ae7001cd5467b3351af107829d04bf625f372eacdc97
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9VR8yAVp2H:TDqPe1Cxcxk3ZAEUaLR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3096) 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

2944 mssecsvc.exe
2612 mssecsvc.exe
2568 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
2944	mssecsvc.exe
2612	mssecsvc.exe
2568	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\{9AE6BEA1-F50D-47DB-B21D-E151621223EB}\5e-dd-44-d3-61-61	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-dd-44-d3-61-61\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9AE6BEA1-F50D-47DB-B21D-E151621223EB}\WpadDecisionTime = 505362007eb3da01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9AE6BEA1-F50D-47DB-B21D-E151621223EB}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9AE6BEA1-F50D-47DB-B21D-E151621223EB}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-dd-44-d3-61-61	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
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\UNCAsIntranet = "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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-dd-44-d3-61-61\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9AE6BEA1-F50D-47DB-B21D-E151621223EB}	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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00fc000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9AE6BEA1-F50D-47DB-B21D-E151621223EB}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-dd-44-d3-61-61\WpadDecisionTime = 505362007eb3da01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2256 wrote to memory of 2120	2256	rundll32.exe	rundll32.exe
PID 2256 wrote to memory of 2120	2256	rundll32.exe	rundll32.exe
PID 2256 wrote to memory of 2120	2256	rundll32.exe	rundll32.exe
PID 2256 wrote to memory of 2120	2256	rundll32.exe	rundll32.exe
PID 2256 wrote to memory of 2120	2256	rundll32.exe	rundll32.exe
PID 2256 wrote to memory of 2120	2256	rundll32.exe	rundll32.exe
PID 2256 wrote to memory of 2120	2256	rundll32.exe	rundll32.exe
PID 2120 wrote to memory of 2944	2120	rundll32.exe	mssecsvc.exe
PID 2120 wrote to memory of 2944	2120	rundll32.exe	mssecsvc.exe
PID 2120 wrote to memory of 2944	2120	rundll32.exe	mssecsvc.exe
PID 2120 wrote to memory of 2944	2120	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\87bf83017d7b2f34594792febc376508_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2256

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\87bf83017d7b2f34594792febc376508_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2120

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2944

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2568

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:2612

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
9719213a71970894d2a15fc00461dc91

SHA1
bd8f32d2163221f0aba18a87a332718d2969efee

SHA256
27998aaaa5b9c8a7845ec6b9dbcd18a3c6ee56b96c6fea2e1dc86a1ffa394eaf

SHA512
861409c412fd041c897a709186e6b4d8a9a0fc2113cae716f744e113cfaab34d45791134b04835a810e338c65620fe2d492e3ae40f18cd3ee64f6d51e28b83e4

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

MD5
f20ba14052ac4c88fe6ab5239b6788b8

SHA1
a20f8f628a79f13256b1e8eee4ec1a37bbc19a4f

SHA256
73c69cd3e333a7b6028d7ba66c48811bbba85139987d19991ea730b60c928423

SHA512
53514becdd2b8f9d99154f360ef41d2dac8c9847c3d30fe053675feca181489bde2b0352b67db0c8eab810cbafeec4d00164e29101ab5d7790c461d95ec5061d

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads