wannacry | c63bf97c4a4bc3e4f209f9001c80f349149f2573b1bd8a3ca4d1e5cbc03fd806

General

Target

abe6e87983c57683bbbb49fb6dc2251b_JaffaCakes118.dll
Size

5.0MB
MD5

abe6e87983c57683bbbb49fb6dc2251b
SHA1

bc01665343d892b92f4320652e89d5252afbb8b3
SHA256

c63bf97c4a4bc3e4f209f9001c80f349149f2573b1bd8a3ca4d1e5cbc03fd806
SHA512

33cf102d67e4ef204b5662a5503e00814e8f4d9060cc40b8b88d4fec154bb422f696ed5c035be27601cc7c53885caeb3e05abe64f1a163beab83a28c4ab1eff6
SSDEEP

49152:znAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdh:TDqPoBhz1aRxcSUDk36SAEdh

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3263) 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

2148 mssecsvc.exe
2564 mssecsvc.exe
2440 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
2148	mssecsvc.exe
2564	mssecsvc.exe
2440	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	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\UNCAsIntranet = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-77-22-ab-73-f6\WpadDecision = "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\Wpad\{06554B65-349C-4C97-B710-6E0E95F99848}\WpadDecisionTime = 403dd940afbeda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{06554B65-349C-4C97-B710-6E0E95F99848}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-77-22-ab-73-f6	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
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00bd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{06554B65-349C-4C97-B710-6E0E95F99848}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{06554B65-349C-4C97-B710-6E0E95F99848}\82-77-22-ab-73-f6	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-77-22-ab-73-f6\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-77-22-ab-73-f6\WpadDecisionTime = 403dd940afbeda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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 (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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{06554B65-349C-4C97-B710-6E0E95F99848}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{06554B65-349C-4C97-B710-6E0E95F99848}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2072 wrote to memory of 3016	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 3016	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 3016	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 3016	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 3016	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 3016	2072	rundll32.exe	rundll32.exe
PID 2072 wrote to memory of 3016	2072	rundll32.exe	rundll32.exe
PID 3016 wrote to memory of 2148	3016	rundll32.exe	mssecsvc.exe
PID 3016 wrote to memory of 2148	3016	rundll32.exe	mssecsvc.exe
PID 3016 wrote to memory of 2148	3016	rundll32.exe	mssecsvc.exe
PID 3016 wrote to memory of 2148	3016	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\abe6e87983c57683bbbb49fb6dc2251b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2072

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\abe6e87983c57683bbbb49fb6dc2251b_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3016

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2148

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2440

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:2564

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
68c6204cf77e572e59f69614b2ca3d08

SHA1
33631d615d796844cdb9fd37c78d82cb83af1a5f

SHA256
93cda4a7e1fcc7e2f79437354e36f5e58ccac5f01ce54054e88ba7a54115a3cc

SHA512
76387771afdaeed08bca9528ffec6780881d3d748e58f9019897bc7f5c72701ffdaaaeabd1a8bc52bc3a791cfd7326fee88207e837ce348e5254915e9376f378

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
bccad6972840ccd4069b2f9ce01eb89d

SHA1
55c3531a3d17492bfd4cf5f297a34c3c939252ab

SHA256
5aaf6cc5874058d52270446a17529877390b1efafa4b1e7035b35ec4986bdc52

SHA512
75432c3df367c08228267b97b6bdff646ad16c1ea9f28af6986b51296da0f256276445f02b057b35d8038ba6fdfaa4bdc8001f40e9723996e43b7a229d1e332e

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads