wannacry | d93476e8a77436c20fbd4c27ed2eea9508b65e9c89a15eeae3f327cbb211c4db

General

Target

9d81c50361a2ef2b18c754eb9625143c_JaffaCakes118.dll
Size

5.0MB
MD5

9d81c50361a2ef2b18c754eb9625143c
SHA1

ae6bcee32bfbdb752061e24b5a39a2821d13594a
SHA256

d93476e8a77436c20fbd4c27ed2eea9508b65e9c89a15eeae3f327cbb211c4db
SHA512

0f5f7c073a550df1944b46517416dda1877ecdb18facd553d571a2d9682c8808a3cb916aff25fdf245b91c7883100eefbc4f1cbd0613282add652bf05170a72a
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0HY:+DqPoBhz1aRxcSUDk36SAEdhvxWa

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2673) 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

2732 mssecsvc.exe
2636 mssecsvc.exe
2480 tasksche.exe

pid	process
2732	mssecsvc.exe
2636	mssecsvc.exe
2480	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{198D975C-AC69-4FE2-B647-555B59A31385}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-b2-86-34-b4-c1	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-b2-86-34-b4-c1\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-b2-86-34-b4-c1\WpadDecision = "0"	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\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 (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\{198D975C-AC69-4FE2-B647-555B59A31385}\22-b2-86-34-b4-c1	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d6000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{198D975C-AC69-4FE2-B647-555B59A31385}\WpadDecisionTime = 807735e7d5bbda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{198D975C-AC69-4FE2-B647-555B59A31385}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{198D975C-AC69-4FE2-B647-555B59A31385}\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	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\{198D975C-AC69-4FE2-B647-555B59A31385}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-b2-86-34-b4-c1\WpadDecisionTime = 807735e7d5bbda01	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\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2936 wrote to memory of 2804	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2804	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2804	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2804	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2804	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2804	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2804	2936	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 2732	2804	rundll32.exe	mssecsvc.exe
PID 2804 wrote to memory of 2732	2804	rundll32.exe	mssecsvc.exe
PID 2804 wrote to memory of 2732	2804	rundll32.exe	mssecsvc.exe
PID 2804 wrote to memory of 2732	2804	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d81c50361a2ef2b18c754eb9625143c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2936

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d81c50361a2ef2b18c754eb9625143c_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2804

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2732

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2480

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:2636

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
b24d91e4565a2469b307629197b79e6e

SHA1
6ebef10c62603e6f483dd1c0a285e8e5ac0c35a3

SHA256
6f8af7b2bb8f09f33b793e6106e68f0c26707cb8cb79f42e6bbba3bf50868f41

SHA512
0f97b254c68ec9ce46af48dcd3a48b8c07494cacab759ee006cccff52a711998ec26d0a3cb9b4102c220b599dbe1d79ad5a3226806ded25b9940d0277b3e6cfa

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
924f4b9cd7172359495f38f678f4a2a9

SHA1
d1c18d2c67c08c2ace72d62454b1df97e064d813

SHA256
e99bc8bf46e522afff858ec0ade4310b14bf8874a984953510e1455976ec0d3a

SHA512
dfcf914772645210e03347f3b04aaffc09c9af345420e6d1038572b4ee062c17a8b054daaf416e2b92dfa5c0b9a599ced967d291a2a8b243cdd13c2e7b2dc681

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads